Contract Documents and Technical Specifications for the ...

Contract Documents and Technical Specifications for the City of Buda WWTP Phase III Expansion

Part 3.D. Addenda

Non-Standard/ January 25, 2019 of 9 Addendum No. 4 Job No. 60323427

ADDENDUM NO. 4

Date: January 25, 2018

Project Name: Buda WWTP Phase III Expansion

This Addendum forms a part of Contract and clarifies, corrects or modifies original Bid Documents, dated December 6 2018. Acknowledge receipt of this addendum in space provided on Bid Form. Failure to do so may subject bidder to disqualification.

A. Responses to Questions / Clarifications

1. As clarification, the Contract Time for Substantial Completion and Final Completion of the overall project stated in Section 00 52 13 are not modified by the revised Contract time for Substantial Completion of the Interim III Permit Phase, 1.75 MGD Milestone defined in Addendum 2.

2. As stated at the Pre-Bid meeting, the City of Buda owns surrounding property on all sides of the WWTP site. It is anticipated that a part of the property located directly north of the WWTP could be made available for Contractor’s use as temporary storage area during construction. However, Bidders should not assume that borrow material would be available from this area for use as fill inside the WWTP site.

3. The gravity sewer PLANS and technical specifications contained in the bound PLAN set titled “WWTP Influent Gravity Sewer” and in Project Manual 2 of 2 do not apply to construction shown in the PLAN sets title “WWTP Phase III Expansion” Volumes 1 and 2 or specified in Project Manual Volume 1, unless specifically referenced therein.

4. Reference drawings (such as sheet A-C-1R of the WWTP Influent Gravity Sewer PLANS) are furnished for information only. Notes or specifying information shown in reference drawings are not furnished in reference to proposed construction.

5. Clarification for all keynotes similar to keynote no. 23 on drawing B-E-04 that currently states “EXISTING EQUIPMENT IS IN FULLY WORKING ORDER, IF EXISTING EQUIPMENT IS DAMAGED OR STOPS WORKING, IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO FURNISH AND INSTALL NEW EQUIPMENT TO MATCH EXISTING CONDITIONS TO THE SATISFACTION OF THE OWNER AND ENGINEER AT NO ADDITIONAL COST TO THE OWNER.”

Clarification: It is the Contractor’s responsibility to protect the Owner’s existing equipment. If for any reason and/or cause the existing equipment is damaged by the Contractor, then it is the Contractor’s responsibility to repair all damages to the satisfaction of the Owner and Engineer at no additional cost to the Owner. If the Owner’s existing equipment is found to be not working/functioning and/or the equipment has stopped functioning, at no fault of the Contractor, then it is the responsibility of the Contractor to inform the Owner immediately to determine what modifications/adjustments will need to be implemented to repair/replace the equipment based on directive provided by the Owner.

6. In previous Addendum 3, Part B. Project Manual Revisions, Items 8 and 9 incorrectly refer to “Section 01500, Valves”. The Project Manual modifications stated in these items apply to Section 15100, Valves.

7. Response to Question: “Section 11399 1.10. ‘Spare Parts’ - Please confirm spare parts listed in Section 17200 1.04 and 17600 2.03.F are applicable to filter manufacturer.” Response: For Packaged Control Systems, control panel spare parts shall conform to specification Section 13390.


Part 3.D. Addenda


8. As clarification, the underground electrical duct banks to be installed for primary service routing from the Pedernales Electric Cooperative, Inc. (PEC) risers to the proposed pad mounted transformers, “XMFR-002” and “XFMR-003” shall be encased in concrete per details shown in drawing no. Z-E-18.

9. Response to Question: “Specification 16150-2.02-A requires the Contractor to provide 48” radius elbows for conduits that are 4” and larger… consider approving the use of standard radius elbows instead of the long radius type that are specified…” Response: As per specification section 16150, 2.02A, contractor is responsible for providing 48” radius elbows for conduits that are 4” and larger.

B. Project Manual Revisions:

1. Table of Contents, Page 2 of 6: Under DIVISION 02 – SITEWORK insert the following:

02242 CEMENT-STABILIZED SAND BACKFILL

This Section is added to the Project Manual with this Addendum.

2. Table of Contents, Page 3 of 6: Under DIVISION 07 – THERMAL AND MOISTURE PROTECTION delete the following:

07540 THERMOPLASTIC MEMBRANE ROOFING

3. Section 00 45 13 Qualifications Statement, Article 12 Safety Program: Delete the wording:

…”OSHA No. 500 – Log & Summary of Occupational Injuries and Illnesses”…

And replace with:

…”OSHA No. 300 – Log & Summary of Occupational Injuries and Illnesses”…

4. Section 00 41 53, Page 8 of 8: At the bottom of the page, add the following:

NOTE: INFORMATION REQUIRED IN SCHEDULE A (CURRENT EXPERIENCE) AND SCHEDULE B: (PREVIOUS EXPERIENCE) MAY BE SUBMITTED USING ALTERNATIVE FORMS FURNISHED BY THE BIDDER. ALL INFORMATION REQUESTED IN SCHEDULE A AND SCHEDULE B MUST BE INCLUDED IN THE SUBMITTED ATTACHMENTS.

5. Section 01500 Temporary Facilities and Controls, 3.09.F: Delete the first sentence of this paragraph:

Submittals: The Contractor shall prepare with the vendor a preliminary detailed description of the proposed bypass pumping system and emergency response plan, and shall submit these preliminary plans and the vendor’s references with the bid proposal. Bid proposals submitted without furnishing an acceptable preliminary plan shall be rejected. .

And replace with:

F. Submittals:

1. Preliminary Bypass Pumping Plan: After the bid opening and during the bid evaluation period,

the apparent low bidder shall prepare with the vendor a preliminary detailed description of the proposed bypass pumping system and emergency response plan, and shall submit these preliminary plans and the vendor’s references no later than 5 days after the bid proposal submittal date. Failure to submit an acceptable preliminary bypass pumping plan may be grounds for rejection of bid. The preliminary submittal shall include:


Part 3.D. Addenda


a. Bypass pumping Vendor’s location(s), contact information, years in business, number of employees and business address;

b. Vendor’s references required under paragraph 3.09.B of this Section, including location, utility Owner/Owner’s engineer contact information, types and capacities of pumps furnished, flow rate, dates and duration of pumping operation, and description.

c. Identification of proposed Responsible Persons for operation of bypass pumping system, and documentation of experience.

d. Preliminary description of proposed pumping equipment type, number and capacity of pumping units, redundancy, and power/fuel requirements.

e. Preliminary drawings or sketches to define proposed suction locations, equipment staging, pipe routing, and discharge location.

f. Description including reference standards of proposed piping materials, joint types, and methods of pipe support and/or restraint.

6. Section 01500 Temporary Facilities and Controls, 3.09.F: Delete the numbering “1. Bypass Pumping

Plan” and replace with “Detailed Bypass Pumping Plan:”

7. Section 07540 Thermoplastic Membrane Roofing: Delete this Section in its entirety. Section 07540 will not be included in the Project Manual.

As clarification, the roofing system for the proposed Dechlorination Building shall be as indicated on PLANS Sheet N-S-3, as revised and furnished in previous Addendum 3.

8. Section 11212 Vertical Turbine Pumps: Delete this Section and replace with Section 11212 attached to this Addendum. This Section is revised to clarify requirements for control panels; shade structures; and level sensing instruments.

9. Section 11307 Submersible Grinder-Type Sewage Pumps, Paragraph 2.01.A: Delete this line and replace with the following”

“A. KSB, Hydromatic, or Equal.”

10. Section 11307 Submersible Grinder-Type Sewage Pumps, Paragraph 2.02.B.1: Delete this paragraph in

its entirety and replace with the following: “Wet well: RCP wet well with upper and lower concrete slab per PLANS.”

11. Section 11307 Submersible Grinder-Type Sewage Pumps, Paragraph 2.04.A: Delete the heading: “A. Control Panels” And replace with the following: “A. Control Panel: Furnish duplex control panel for proposed pumps in accordance with Section

13390 and as specified in this Section.” As clarification, only one control panel is required in Section 13390.

12. Section 11307 Submersible Grinder-Type Sewage Pumps, Attachment A, Line A.5.b. delete this line and replace with the following:

“b. Equivalent mode by Hydromatic c. Equal”


Part 3.D. Addenda


13. Section 11307 Submersible Grinder-Type Sewage Pumps, Attachment A, Line C.3: delete this line entirely.

14. Section 11310 Sewage Pumps, Submersible Non-Clog: Delete this Section and replace with Section 11310 attached to this Addendum. This Section is revised to clarify requirements for coordination by pump manufacturer regarding existing guide rails and base elbows; requirements for control panels, motor and starters; level sensing instruments, and field testing of installed pumps.

15. Section 11399 Disk Filters and Appurtenances, Paragraph 2.02.D.3: Delete the wording “3/4 HP drive

motor” and replace with: "1 HP drive motor”.

16. Section 11399 Disk Filters and Appurtenances, Paragraph 2.02.F.2: Add the end of this paragraph add the following: “Milliken will be an acceptable manufacturer for valves furnished in the filter system”.

17. Section 11399 Disk Filters and Appurtenances, Paragraph 2.02.G. Delete Paragraph 2.02.G in its entirety

and replace with the following:

“G. Weirs

1. Contractor shall furnish and install influent, effluent, and overflow weirs for each filter unit in accordance with PLANS and filter manufacturer’s requirements.

2. Weirs shall be 304 series stainless steel with 316 stainless steel anchors and fasteners. 3. Basin walls shall be prepared as required to provide a smooth and plumb surface for weir

installations.”

18. Section 11399 Disk Filters and Appurtenances, Paragraph 2.02.H.2.e: Delete the wording: “The VFD

shall control the motor speed via a manual setting.” And replace with the following: “The VFD shall control the motor speed automatically based on flow meter reading.”

19. Section 11399 Disk Filters and Appurtenances, Paragraph 2.02.H.3.c.2: Delete this line item and renumber subsequent line items per the deletion:

2) Water level in the influent channel. As clarification, monitoring of the influent channel water level is not required.

20. Section 11399 Disk Filters and Appurtenances, Paragraph 2.02.H.3.e.6: Delete this line item and renumber subsequent line items per the deletion:

6) Backwash Pump Discharge Pressure.

As clarification, monitoring of the backwash pump discharge pressure is not required at the OIU, however backwash pump discharge pressure indication shall be provided using pressure gauges.

21. Section 13390 Packaged Control Systems, Part 2.05: Delete the heading:

2.05 COMBINATION MOTOR STARTERS AND VARIABLE FREQUENCY DRIVES

And replace with the following:

2.05 COMBINATION MOTOR STARTERS, VARIABLE FREQUENCY DRIVES AND REDUCED VOLTAGE SOLID-STATE SOFT STARTERS

22. Section 13390 Packaged Control Systems, Part 2.05: At the end of Part 2.05, insert the following:


Part 3.D. Addenda


6. Reduced Voltage Solid State Soft Starter (RVSS):

a. Each solid-state reduced-voltage starter assembly shall consist of an SCR-based power section, logic board, a main input isolation contactor, and a paralleling bypass (run) contactor.

b. Each RVSS starter shall employ the use of Silicon Controlled Rectifier (SCR) technology. The RVSS starter shall have a micro-processor based SCR controller equipped with the manufacturer’s standard features for protection, operation, and data acquisition of a RVSS starting system.

c. Each RVSS shall be UL listed and shall be tested according to UL 508C. d. A paralleling bypass (run) contactor shall be supplied with each RVSS. The

paralleling bypass contactor may be integral to the SCR based power section of the RVSS unit at the manufacturer’s discretion.

e. Provide thermostatically controlled cooling fan for starter.

7. Overload Relays: Overload relays shall have the following characteristics: a. Standard class 20, ambient compensated, unless otherwise required for proper

system protection b. Manually reset by push-button located on front of the compartment door. c. Provide with auxiliary contact rated for 120 volts A.C. Contact shall satisfy the

requirements of the DRAWINGS. d. The overload relay heaters will be selected by the PCS manufacturer after

delivery of the PCS. Include all necessary delivery, packaging, and administrative costs associated with the delivery of overload heaters.

23. Section 15062 Ductile Iron Pipe and Cast Iron and Ductile Iron Fittings, paragraph 2.02.H.3: at the end of

this paragraph, add the following:

“4. Mixed Liquor (MLSS), Effluent, and Downstream Process/Recirculation Service: a. Cement mortar lining per AWWA C104/A21.4 is acceptable for DI pipe and

fittings for conveying process fluids at all locations downstream of the influent flow splitter, including return/recirculation flow streams.”

24. Section 15123 Miscellaneous Equipment, Part 2.02: After paragraph 2.02.E, insert new paragraph 2.02.F as follows: “F. Circular Chart Recorders

1. General: Furnish three (3) proposed chart recorders and retag/repurpose two (2) existing chart recorders and install at the Operations Building as shown on PLANS and specified herein.

a. Function: Record and display influent and effluent flow rates b. Dwyer model CR-20or equal. c. Scalable general-purpose chart recorder for 4-20 mA input

2. Service and Locations a. Provide historical record of influent and effluent peak flow events. b. Provide archival hard copy backup of digital plant flow data. c. Chart recorders are to be installed or relocated as required in the existing

operations building. Coordinate final locations with WWTP operators. 3. Features

a. Range: i. Influent and Effluent: Flows of 0 to 20 MGD as 0 to 100% scale ii. Offsite NPW: Flows of 0 to 10 MGD as 0 to 100% scale

b. Accuracy: +/- 0.3% of full scale c. Recording times: 1, 7, 14, 31 days selectable d. Power: 120 VAC.


Part 3.D. Addenda


4. CONTRACTOR to coordinate chart recorder with Influent Open Channel Ultrasonic Flow Meters, Effluent Magnetic Flow Meters, and NPW Ultrasonic Flow Meter to ensure compatibility as a functional system.

5. Furnish and/or retag/repurpose and install chart recorders as follows: a. Existing chart recorder to be re-tagged "OP-FR-FIT100" measuring plant influent

flow based on signal from existing ultrasonic open channel flow meter at the existing influent Parshall flume (reference PLANS Sheet W-I-04).

b. Existing chart recorder to be re-tagged "OP-FR-FIT700A" measuring the NPW flow to offsite reuse based on signal from the existing closed-pipe ultrasonic flow meter at the NPW pump station (reference PLANS Sheet W-I-16).

c. Proposed chart recorder tagged "OP-FR-FIT101" measuring plant influent flow based on signal from proposed ultrasonic open channel flow meter at the proposed influent Parshall flume (reference PLANS Sheet W-I-05).

d. Proposed chart recorder tagged "OP-FR-FIT701" measuring plant effluent discharge flow to Outfall 002 based on signal from the proposed 24” magmeter at the Effluent Pump Station (reference PLANS Sheet W-I-17).

e. Proposed chart recorder tagged "OP-FR-FIT702" measuring plant effluent discharge flow to Outfall 001 based on signal from the proposed 20” magmeter at the Effluent Pump Station (reference PLANS Sheet W-I-18).”

25. Section 16150 Raceways, Fittings and Supports, Attachment A – Conduit and Wire Schedule: for the

following listed conduit tags, delete the wire sizes and descriptions shown and replace with the following:

EPS-CPEFP7-C1: provide a 1-1/4” conduit with [4#12(C), 8#12(SP), 1#12(G)]



EPS-CPEFP-C1 : provide a 1-1/2” conduit with [16#12 (C), 8#12 (SP), 1#12 (G)]

EPS-CPNPW-C1 : provide a 1-1/2” conduit with [14#12 (C), 8#12 (SP), 1#12 (G)]

EPS-MSCPEFPS-C1 : provide a 1-1/2” conduit with [8#12(C), 10#12 (SP), 1#12 (G)]

ILS-CPRSP2-C : provide a 1-1/2” conduit with [14#12(C), 10#12 (SP), 1#12(G)]

ILS-CPRSP-C : provide a 2” conduit with [26#12 (C), 10#12 (SP), 1#12 (G)]

26. Section 16350 Lighting: Delete paragraph 1.04.A in its entirety and replace with the following:

A. After the bid has been awarded, the Contractor shall submit an additional lighting fixture submittal which shall include lighting fixture data sheets with LED (Light- Emitting Diode) type lighting fixtures which may be provided as a substitution (an approved equal) for each type of lighting fixture shown in the lighting fixture schedule for approval by OWNER/Engineer. In addition, the Contractor shall provide a change order cost proposal for providing LED type lighting fixtures and associated mounting hardware in lieu of the current proposed fixtures as shown on the PLANS. OWNER/Engineer may choose to substitute LED type lighting fixtures for the lighting fixtures as shown on the PLANS. If approved, the LED type lighting fixtures, accessories, etc. shall be provided in lieu of the specified fixtures.

B. Revisions to PLANS:

1. PLANS Sheet A-G-17 (Proposed hydraulic Profile II – Final Permit Phase, 3.5 MGD) is revised to clarify elevations at and directly upstream of the proposed disk filters.

2. PLANS Sheet L-M-O (Existing Effluent Filter Modifications) is updated to clarify mounting configuration for proposed stop gate frames.

3. PLANS Sheet L-M-3 (Effluent Disk Filters Mechanical Section) is revised to clarify the required influent weir elevation.


Part 3.D. Addenda


4. PLANS Sheet N-M-2 (Dechlorination Feed System Building Mechanical Plan and Section) is revised to refer to hoist base detail on N-S-2.

5. PLANS Sheet N-E-03 (Dechlorination Feed System Building Lighting and Auxiliary Plan – Proposed) is revised to delete the lighting fixture schedule and coordinate with sheet Z-E-01.

6. PLANS Sheet P-M-1 (Existing Effluent/Reuse Pump Station Plan and Section – Interim III Permit Phase, 1.75 MGD) is revised to clarify annotation.

7. PLANS Sheet Q-M-1 (Proposed Effluent Pump Station Mechanical Plan) is revised to clarify level sensing instruments and control panel shade structures.

8. PLANS Sheet Q-M-1 (Proposed Effluent Pump Station Mechanical Section) is revised to clarify level sensing instruments.

9. PLANS Sheet W-I-34 (PLC Network Architecture – Renovation) is revised to provide emergency power status outputs at main control panel OP-MCP-01.

10. PLANS Sheet W-I-46 (Existing Influent Lift Station – Control Panel “ILS-CP-RSP” Field Interface Wiring Schematic – Renovation) is revised to clarify requirement for PLC fail alarm (if PLC furnished in panel).

11. PLANS Sheet W-I-47 (Existing Influent Lift Station – Control Panel “ILS-CP-RSP” Field Interface Wiring Schematic – Renovation) is revised to provide emergency power status input.

12. PLANS Sheet W-I-48 (Influent Lift Station No. 2 – Control Panel “ILS-CP-RSP2” Field Interface Wiring Schematic – Proposed) is revised to provide emergency power status input.

13. PLANS Sheet W-I-65 (Effluent Pump Station - Control Panel “EPS-CP-EFP” Field Interface Wiring Schematic – Proposed) is revised to provide emergency power status input.

14. PLANS Sheet W-1-66 (Effluent Pump Station – Control Panel “EPS-CP-EFP7” Field Interface Wiring Schematic – Proposed) is revised to claify IO.



17. PLANS Sheet W-I-69 (Effluent Pump Station – Master Control Panel “EPS-MSCP-EFPS” Field Interface Wiring Schematic – Proposed) is revised to provide emergency power status input.

18. PLANS Sheet W-I-70 (Effluent Filter – Control Panel “DF2-CP-DFS1” Field Interface Wiring Schematic – Proposed) is revised to clarify field interface wiring for filter control panel.

19. PLANS Sheet W-I-71 (Effluent Filter – Control Panel “DF2-CP-DFS1” Field Interface Wiring Schematic – Proposed) is revised to clarify field interface wiring for filter control panel.

20. PLANS Sheet W-I-72 (Non-Potable Water Control Panel “EPS-CP-NPW” Field Interface Wiring Schematic – Proposed) is revised to clarify field interface wiring for filter control panel.

21. PLANS Sheet W-I-73 (Non-Potable Water Control Panel “EPS-CP-NPW” Field Interface Wiring Schematic – Proposed) is revised to clarify field interface wiring for filter control panel.

22. PLANS Sheet Z-C-2 (Standard Civil Details Sheet 2 of 5) is revised to clarify height of fencing.


Part 3.D. Addenda


23. PLANS Sheet Z-E-01 (Electrical Details Sheet 1 of 10) is revised to clarify the lighting fixture schedule.

24. PLANS (Volume 2, WWTP Influent Gravity Sewer) Sheet AC-3 is revised to clarify Note 6, to define length for CIPP liner and also allow replacement of the section using open-trench construction in lieu of CIPP liner at the Contractor’s option.

25. PLANS (Volume 2, WWTP Influent Gravity Sewer) Sheet TC-1 is revised to clarify Note 1. Reference to “See Comment 39” was deleted.

C. Exhibits

1. PLANS Sheet A-G-17 (Proposed hydraulic Profile II – Final Permit Phase, 3.5 MGD) 2. PLANS Sheet L-M-O (Existing Effluent Filter Modifications) 3. PLANS Sheet L-M-3 (Effluent Disk Filters Mechanical Section) 4. PLANS Sheet N-M-2 (Dechlorination Feed System Building Mechanical Plan and Section) 5. PLANS Sheet N-E-03 (Dechlorination Feed System Building Lighting and Auxiliary Plan – Proposed) 6. PLANS Sheet P-M-1 (Existing Effluent/Reuse Pump Station Plan and Section – Interim III Permit Phase,

1.75 MGD) 7. PLANS Sheet Q-M-1 (Proposed Effluent Pump Station Mechanical Plan) 8. PLANS Sheet Q-M-1 (Proposed Effluent Pump Station Mechanical Section) 9. PLANS Sheet W-I-34 (PLC Network Architecture – Renovation) 10. PLANS Sheet W-I-46 (Existing Influent Lift Station – Control Panel “ILS-CP-RSP” Field Interface Wiring

Schematic – Renovation) 11. PLANS Sheet W-I-47 (Existing Influent Lift Station – Control Panel “ILS-CP-RSP” Field Interface Wiring

Schematic – Renovation) 12. PLANS Sheet W-I-48 (Influent Lift Station No. 2 – Control Panel “ILS-CP-RSP2” Field Interface Wiring

Schematic – Proposed) 13. PLANS Sheet W-I-65 (Effluent Pump Station - Control Panel “EPS-CP-EFP” Field Interface Wiring

Schematic – Proposed) 14. PLANS Sheet W-1-66 (Effluent Pump Station – Control Panel “EPS-CP-EFP7” Field Interface Wiring



Schematic – Proposed) 17. PLANS Sheet W-I-69 (Effluent Pump Station – Master Control Panel “EPS-MSCP-EFPS” Field Interface

Wiring Schematic – Proposed) 18. PLANS Sheet W-I-70 (Effluent Filter – Control Panel “DF2-CP-DFS1” Field Interface Wiring Schematic –

Proposed) 19. PLANS Sheet W-I-71 (Effluent Filter – Control Panel “DF2-CP-DFS1” Field Interface Wiring Schematic –

Proposed) 20. PLANS Sheet W-I-72 (Non-Potable Water Control Panel “EPS-CP-NPW” Field Interface Wiring

Schematic – Proposed) 21. PLANS Sheet W-I-73 (Non-Potable Water Control Panel “EPS-CP-NPW” Field Interface Wiring

Schematic – Proposed) 22. PLANS Sheet Z-C-2 (Standard Civil Details Sheet 2 of 5) 23. PLANS Sheet Z-E-01 (Electrical Details Sheet 1 of 10) 24. PLANS (Volume 2, WWTP Influent Gravity Sewer) Sheet AC-3 (Proposed Sanitary Sewer Line ‘A’ STA

11+00 to STA 18+87) 25. PLANS (Volume 2, WWTP Influent Gravity Sewer) Sheet TC-1 (Traffic Control Plan Notes)

D. Attachments

1. Section 02242 CEMENT STABILIZED SAND BACKFILL 2. Section 11310 SEWAGE PUMPS, SUBMERSIBLE NON-CLOG 3. Section 11212 VERTICAL TURBINE PUMPS

AECOM TECHNICAL SERVICES INC.

9400 AMBERGLEN BLVD.

AUSTIN, TEXAS 78729

WWW.AECOM.COM

TBPE REG. NO. F-3580



AUSTIN, TEXAS 78729

WWW.AECOM.COM


B

LM1

SECTION

C

LM1

SECTION

MM M MM

FM



AUSTIN, TEXAS 78729

WWW.AECOM.COM


PLAN VIEW

SCALE: 1/4" = 1'-0"



AUSTIN, TEXAS 78729

WWW.AECOM.COM


A

QM2

1

ZM3

A

QM2

2

ZM8

2

ZM8

2

QM2



AUSTIN, TEXAS 78729

WWW.AECOM.COM


QM1

ASECTION

SCALE: 1/4" = 1'-0"

ZS1

7

ZM8

4

ZM1

7

ZM3

1

ZM3

1



AUSTIN, TEXAS 78729

WWW.AECOM.COM


NonStandard 01/22/`9 02242 - Page 1 Cement-Stabilized Sand Backfill

Job No. 60323427

SECTION 02242

CEMENT-STABILIZED SAND BACKFILL PART 1 – GENERAL 1.01 DESCRIPTION

This Section includes all plant, labor, equipment, supervision, and tools for the furnishing and installation of Cement-Stabilized Sand Backfill as shown on PLANS and as indicated in other Sections of the TECHNICAL SPECIFICATIONS.

1.02 RELATED REQUIREMENTS

Related work as called for on PLANS or specified elsewhere in this or other TECHNICAL SPECIFICATIONS.

1.03 – 1.11 (NOT USED) PART 2 – PRODUCTS 2.01 MATERIALS

A. Aggregate: Deleterious materials in sand not to exceed the following limits, by weight: 1. Material removed by decantation 5.0%

Clay lumps 0.5% Other deleterious substances (e.g. coal, shale, coated grains of soft flaky particles) 2.0%

2. Gradation Requirements:

Sieve Size % Retained

1/4″ 0-5

No. 40 0-40

No. 100 70-100

No. 200 95-100

B. Plasticity Index: 10 or less when tested in accordance with ASTM D4318. C. Cement: ASTM C150, Type I. D. Water: Fresh and clean.

2.02 ALTERNATIVE MATERIALS

A. Mix Design by Contractor in accordance with City of Austin Standard Specifications Item 402S Controlled Low Strength Material may be substituted at the Contractor’s option.

PART 3 – EXECUTION 3.01 MIXING

Use not less than 1½ sacks of cement per cubic yard of mixture. Use amount of water required to provide mix suitable for mechanical hand tamping and mix in mixer to obtain specified results. Material not in place within 1½ hours after mixing or that has obtained an initial set will be rejected and removed from the site.

NonStandard 01/22/`9 02242 - Page 2 Cement-Stabilized Sand Backfill

Job No. 60323427

3.02 PLACING

Place at locations indicated on PLANS and in TECHNICAL SPECIFICATIONS. Place in maximum 8-inch lifts and compact each lift to a minimum dry density of 102 pounds per cubic foot. Where placement is required adjacent to cast-in-place concrete structures, placement shall occur only after structure has cured for at least seven days.

3.03 - 3.10 (NOT USED) 3.11 MEASUREMENT AND PAYMENT

No separate measurement or payment for work performed under this Section. Include cost of same in Contract price bid for work of which this is a component part.

END OF SECTION

Non-Standard/ 10/12/15 11212 – Page 1 of 14 Vertical Turbine Pumps

Job No. 60323427

SECTION 11212

VERTICAL TURBINE PUMPS PART 1 - GENERAL 1.01 SUMMARY

This Section includes the furnishing and installation of three (3) 300-HP vertical turbine, open shaft, water lubricated pump(s) at the proposed Effluent Pump Station, as shown on PLANS and specified herein. The proposed pump and motor assembly for each proposed pump is referred to in this Section as the Pump Unit. This Section additionally includes refurbishing and modification of three (3) existing 100-HP vertical turbine pumps, and relocation of the 100-HP pumps from the existing Effluent/NPW Pump Station to the proposed Effluent Pump Station as shown on PLANS and specified herein. This Section additionally includes the furnishing and installation of one (1) 30-HP vertical turbine Nonpotable Water (NPW) pump at the existing Effluent/NPW Pump Station. Control panels as specified herein shall be furnished and installed under Section 13390 for overall co-ordination, pump control, and monitoring of the three (3) proposed 300-HP vertical turbine pumps, the three (3) relocated existing 100-HP vertical turbine pumps, and the two (2) existing 30-HP NPW pumps plus one (1) proposed 30-HP NPW pump.


A. PLANS show general arrangement, location, and basic dimensions. Attachment “A” to this Specification Section gives performance and design requirements.

B. Related work as called for on PLANS or specified in this or other TECHNICAL

SPECIFICATION Sections.

C. Motors and motor protection devices to be in accordance with Section 15173 and as specified in this Section.

1.03 REFERENCES

The publications listed below form a part of this Specification to the extent referenced. The publications are referred to in the text by basic designation only.

AMERICAN SOCIETY OF TESTING AND MATERIALS (ASTM) ASTM A36 Standard Specification for Carbon Structural Steel ASTM A48 Standard Specification for Gray Iron Castings ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped,

Zinc-Coated Welded and Seamless


Job No. 60323427

ASTM A108 Standard Specification for Steel Bars, Carbon, Cold Finished, Standard Quality

ASTM A181 Standard Specification for Carbon Steel, Forgings for General

Purpose Piping ASTM A276 Standard Specification for Stainless Steel Bars and Shapes ASTM A582 Standard Specification for Free-Machining Stainless Steel Bars ASTM B584 Standard Specification for Copper Alloy Sand Castings for

General Applications 1.04 (NOT USED) 1.05 SYSTEM DESCRIPTION

A. The three (3) proposed 300-HP vertical turbine Effluent Pumps and the three (3)

relocated existing 100-HP effluent pumps will pump treated plant effluent from the proposed Effluent Pump Station to the offsite effluent discharge locations. The effluent pump(s) will operate manually or automatically based on the position of the Hand/Off/Auto (HOA) switch at the local control panels.

B. The two (2) existing and one (1) proposed 30-HP vertical turbine NPW Pumps system pumps will pump treated plant effluent from the existing Effluent/NPW Pump Station to the Plant Nonpotable Water/Offsite Reuse systems. The effluent pump(s) will operate manually or automatically based on the position of the Hand/Off/Auto (HOA) switch at the local control panels.

C. When in manual mode of operation (HOA switch in Hand position) the pump shall

be started or stopped by using the start/stop button at the local control panel. When in automatic mode of operation (HOA switch in Auto position) the pumps will automatically start/stop based on water elevation in the pump station wet well. The controls for all the pump units will be installed in control panels located as shown on plans. The control panels shall be equipped with triplex alternators that shall recognize the fail/available pumps and will alternate between available pumps.

D. In case of a pump failure, a corresponding alarm light will be turned on at the

control panel and an alarm signal will be generated. The alarm signal will activate the audio and visual alarm at the effluent lift station and will also be transmitted to the operations building.

1.06 SUBMITTALS

A. Furnish in accordance with Specifications Section 01300, “Submittals” and Section 01730, “Operation and Maintenance Data”. 1. Shop Drawings. In addition to the items specified in Section 01300,

“Submittals”, furnish the following: a. Certified performance curves showing pumping head, capacity,

horsepower and efficiency from shut-off to beyond minimum


Job No. 60323427

operating head at operating speed. Include losses for entrance, bowl, column, and discharge header.

b. Dimensioned drawings and description of construction, including parts list with materials of construction and metallurgy. Designate materials by ASTM standards.

c. Tabulated Data: Rated head, capacity, and BHP. Rated operating speed. Maximum combined hydraulic and static thrust.

d. Installation instructions and drawings showing anchor bolt locations, electrical and piping connections.

e. Equipment weights. f. Wiring Diagrams, Process and Instrumentation Diagrams,

Instrument Loop Diagrams, control panel front and backpanel elevations, and product data sheets for all provided equipment.

2. Operation and Maintenance Manuals 3. Reports

a. Factory Tests: Furnish certified factory test reports. b. Installation Report: Furnish to ENGINEER copies of certified

report prepared by manufacturer’s technical representative certifying satisfactory installation, operation, and in service placement of units.

1.07 QUALITY ASSURANCE

A. System Coordination: CONTRACTOR retains overall responsibility to properly install, adjust, test, and place in operation the Pump Units.

B. Vibrations, when measured in the direction of maximum amplitude at the top of

the motor support shall not exceed Hydraulic Institute standards as a function of brake horsepower, measured in inches per second RMS per HI-9.6.4.

1.08 DELIVERY, STORAGE AND HANDLING

Deliver, unload, and store products on site in a manner that prevents damage. Use special care to prevent damage from temperature and condensation.

1.09 - 1.11 (NOT USED) PART 2 - PRODUCTS 2.01 MANUFACTURER(S)

A. Flowserve;

B. Sulzer; C. Fairbanks-Morse; D. Approved equal.


Job No. 60323427

2.02 MATERIALS AND/OR EQUIPMENT

A. General 1. Pumping unit to yield performance stable and free from excessive noise

or vibration throughout operating range. 2. Design each unit so reverse operation will not cause damage. 3. Pumping unit shall be designed for non-overloading operation (without

motor operation in service factor) throughout operating range. B. Discharge Head: Low carbon steel A53 Grade B pipe and A36 fabricated steel,

above base discharge with ANSI (Class 125) flanges, bolted base for mounting on fabricated steel sole plate and concrete pad as shown on PLANS. Head is to be equipped with lifting lugs or eyes. The motor plate shall be machined with a register to align the motor to the stuffing box and bottom register. All registers shall be concentric within 0.005” and the motor plate shall be parallel to the bottom plate within 0.005”. The discharge head shall be heat stress relieved after welding and prior to machining.

C. Bowls, Suctions and Discharge Pieces: Gray cast iron, ASTM A48 Class 30

minimum, flanged joints registered, fitted for accurate alignment. Suction bell contoured for gradual change in velocity, fitted with ASTM B584-C93200 or ASTM B505-C84400 bronze bearing. Discharge piece or last stage bowl fitted with ASTM B584-C93200 or ASTM B505-C84400 bronze bearing. Fit bowls with bronze wear rings, ASTM B584-C943200 or ASTM B271-C90300. All bowl hardware shall be Type 316 stainless steel.

D. Impellers: Cast bronze, ASTM B584 C83600 or ASTM B584-C87500,or C90300

aluminum bronze enclosed type, sandblasted before machining, hand filed, polished, dynamically and hydraulically balanced. Fasten to shaft with Type 316 stainless steel keyed. Must be suitable for chlorinated water application. Fit impellers with bronze wear rings, ASTM B584-C943200 or ASTM B271-C90300.

E. Pump Shaft: Stainless steel Type 416, oversized to eliminate distortion. F. Pump Shaft Bearings: ASTM B505-932 bronze bearings on each side of each

impeller. G. Lineshaft Bearings: Viton rubber in ASTM B584 C93200 bronze guides located

at column flanges on 5-foot centers. H. Discharge Column Assembly

1. Columns to be ASTM A53 steel pipe flanged and bolted construction, in lengths not exceeding 5-feet. All flange hardware shall be Type 316 stainless steel. The flanges shall have machined registers on each end which are concentric within 0.005” of each other. Columns with welded in spiders shall have the bore of the spider concentric within 0.005 of the register on the same end. The flange faces shall be parallel within 0.005 in. Maximum water velocity in column is not to exceed 12 ft/sec, and the head losses in column pipe are not to exceed 5 ft of head per 100 ft of pipe at design flow conditions.

2. Lineshaft: Oversize to eliminate distortion, Type 416 stainless steel pump shaft quality (PSQ) without sleeves. Maximum lineshaft segment lengths


Job No. 60323427

to be 5-foot maximum. Line-shaft shall be machined straight within 0.003” T.I.R.

3. Lineshaft Couplings: 416 stainless steel or better, ring and keyed. Line-shaft couplings to receive protective coating to prevent galling when material matches line-shaft

4. Extended shaft for use with solid-shaft vertical motor. 5. Glands and Seals: Water lubricated; Class 30 cast iron packing box,

bronze lantern ring, and packing gland. A mechanical spring-loaded cartridge seal shall be provided as part of the stuffing box: Flowserve PSS 4, A. W. Chesterton 442, or approved equal. The mechanical seal shall be equipped with carbon and silicon carbide seal faces, with a port for API Plan 13 flush. The seal shall be split type, capable of removal without removing motor coupling. The seal shall be anchored to the stuffing box with 18-8 stainless steel fasteners. Internal gaskets shall be held in place mechanically and not require adhesives. Elastomers shall be FKM (Viton) or EP. Seal bypass discharged to suction case; All components to be of noncorrosive material, bronze or 316 stainless steel.

6. Miscellaneous: Provide ASTM B584 C83600 bronze sand collar or cap on shaft; secure with stainless steel set screw. Rubber bronze water slinger on shaft above packing gland.

7. The pump shall be supplied with a sub-base plate (soleplate), A36 steel or better, which shall be grouted in place, and to which the pump discharge head shall be bolted. The mounting plate shall have a machined surface with typical finish of 125 rms. Anchor bolt holes shall be minimum of two bolt diameters from any edge of sole plate.

I. Inlet Screen: Inlet screen to be Type 316 stainless steel. All hardware to be

Type 316 stainless steel. Provide either 304SS anti-vortex vanes in strainer or as separate cone to be affixed to the concrete below the strainer.

J. Where shown in PLANs, install pump in wet well with 316 stainless steel anti-

vortex baffle attached to wet well wall and floor behind and below pump inlet to minimize potential for pre-rotation. Baffle design and installation to be approved by pump manufacturer.

K. The natural frequency of the assembled pump shall have at least 25 percent

separation margin from the pump operating range. L. Painting: Per Specification Section 09902, “Painting and Protective Coatings” as

follows: 1. Bowls (exterior), Columns (exterior and interior) and Discharge Head

(interior): Per “Wastewater Treatment Plant Equipment, Piping – Submerged” from “Table 1 - System Schedule”.

2. Discharge Head (exterior): Per “Piping and Valves - Exterior” from “Table 1 - System Schedule”.

3. The interior of the bowls shall have Scotchkote 134 or equal epoxy lining.

M. Control Panels 1. Furnish control panels and integrate into plant Distributed Control System

in accordance with PLANs, Sections 13390 and 17200, and as specified


Job No. 60323427

herein. Number and type of control panels shall be as shown in electrical/ instrumentation and control drawings.

2. Contractor, through the ICS, shall furnish all PLC programming required for implementation of the proposed control functionality described in this Section or PLANS. ICS shall coordinate with the Guadalupe Blanco River Authority for consistency with GBRA’s PLC programming standards. Furnish IO and local operator interface as required for local control at the control panel of the following control functions, as well as for remote monitoring as indicated in PLANS or described herein.

3. Effluent Pump Station Control Description a. During normal operation, manual isolation valves in the pump

discharge headers will be position such that pumps EPS-EFP-001 through EPS-EFP-003 convey flow to Outfall 001 and pumps EPS-EFP-007 through EPS-EFP-009 convey flow to Outfall 002.

b. Separate pumps off, lead pump on, lag pump on, and second lag pump on water level control elevations will be defined in the control software for pumps EPS-EFP-001 through EPS-EFP-003 and for pumps EPS-EFP-007 through EPS-EFP-009. Wet well High Water Level Alarm and Low Water Level Alarm setpoints shall also be defined in the control software. The pressure transducer shown in PLANS shall serve as the primary wet well water level signal for automatic control of pumps and signaling of alarms based on water level in the wet well. The multitrode conductivity probe shown in PLANS shall serve as the backup wet well water level signal and shall allow automatic operation of pumps to continue in the event of pressure transducer failure.

c. Relocated existing Effluent Pump Station pumps EPS-EFP-001 through EPS-EFP-003 shall operate in automatic mode in alternating sequence based on level in the proposed effluent pump station wet well to convey effluent flow to outfall 001.

d. Proposed Effluent Pump Station pumps EPS-EFP-007 through EPS-EFP-009 shall operate in automatic mode in alternating sequence based on level in the proposed effluent pump station wet well to convey effluent flow to outfall 002.

e. PLC control shall be provided at Control Panel MPS-MSCP-EFPS to prioritize effluent pumping as follows: i. Discharge to Outfall 001 will normally be automatically prioritized

over discharge to Outfall 002, up to a Maximum Daily Discharge Limit to Outfall 001 (operator-adjustable totalized volume setpoint of zero to 2 million gallons). In this operating mode, pumps EPS-EFP-001 through EPS-EFP-003 will serve as the lead, lag, and second lag pumps for the Effluent Pump Station. Pumping of effluent will automatically switch from Outfall 001 to Outfall 002 when totalized flow to Outfall 001 during a calendar day reaches the Outfall 001 Maximum Daily Discharge Limit setpoint.

ii. If wet well water level continues to rise to a high water level setpoint during operation of pumps EPS-EFP-001 through EPS-EFP-003, pumps EPS-EFP-007 through EPS-EFP-009 will start and operate automatically in alternating sequence as additional lag pumps to convey flow to Outfall 002. This function will override automatic outfall prioritization. When water level decreases to “pumps off” elevation for pumps EPS-EFP-007 through EPS-EFP-


Job No. 60323427

009, prioritization of discharge to Outfall 001 will automatically resume and continue in effect.

iii. Prioritization of discharge to Outfall 002 may be operator-selected, overriding automatic prioritization of Outfall 001, while maintaining automatic mode of pump operation for sequencing and alternating pumps.

iv. If prioritization of discharge to outfall 002 is selected by Operator, pumps EPS-EFP-007 through EPS-EFP-009 will serve as the lead, lag, and second lag pumps for the Effluent Pump Station. In this case pumping of effluent will automatically switch from Outfall 002 to Outfall 001 when totalized flow to Outfall 002 during a calendar day reaches the Outfall 002 Maximum Daily Discharge Limit setpoint.

v. If wet well water level continues to rise to a high water level setpoint during operation of pumps EPS-EFP-007 through EPS-EFP-009 when prioritization of Outfall 002 is selected, pumps EPS-EFP-001 through EPS-EFP-003 will start and operate automatically in alternating sequence as additional lag pumps to convey flow to Outfall 002. This function will override automatic outfall prioritization.

f. Power Interruption/Restoration and Emergency Power Operation: i. Pumps shall be automatically re-started in a staggered starting

sequence following interruption of power, transfer of power source to emergency power generator, or upon return to normal power source. Control panels shall provide for adjustable time delay for starting each pump

ii. During operation using power supplied by emergency power generator, up to a maximum of two (2) 100-HP pumps and two (2) 300-HP pumps shall operate simultaneously. Furnish and integrate contacts or digital I/O at Control Panel MPS-MSCP-EFPS as required to detect generator status and lock out second lag pump while emergency generator is in service.

iii. Operation during emergency power condition shall be as described for normal operation, with the exception of locking out the second lag pump of each pump size.

iv. Following resumption of normal power source, pumps shall automatically resume operation of all available pumps in normal operating sequence.

g. Existing NPW/Reuse Pump Station Control: pumps EPS-EFP-004 and 005 and proposed NPW/Reuse Pump Station pump EPS-EFP-006 shall be integrated into the existing NPW/reuse system control sequence and shall operate lead, lag, and second lag pumps in alternating sequence to maintain pressure in the NPW system, with low level override based on water level in the NPW/Reuse Pump Station wet well. Furnish IO as shown in PLANS. The proposed pressure transducer indicated in the PLANS shall provide indication of water level in the wet well, provide signal for high and low water level alarms, and shall serve as a signal to prevent operation of pumps at low water level alarm condition. The relocated existing float switch shall provide a secondary backup low water level alarm signal and prevent NPW pumps from operating during low water level alarm condition. PLC(s) may be furnished in accordance with Section 13390


Job No. 60323427

for control of NPW pumps but is not a requirement. If PLC control is used, PLC cabinet shall furnished with cooling in accordance with Section 13390, and a PLC fail alarm signal shall be provided at the Operations building.

3. Enclosures: Control panels shall conform to NEMA 4X standards and be constructed of stainless steel. Back-panels for mounting components shall be aluminum. Panels shall be completely dead front and shall have no equipment, pilot lights, push buttons, or other devices installed in the exterior door. All such components required to be panel mounted shall be installed on an internally mounted, hinged, swing-out aluminum subpanel. The subpanel shall have captive screw-fastened latches, shall be capable of being opened a full 90 degrees and shall be grounded. Exterior doors shall be gasketed, padlocking and equipped with luggage type latches. All external hardware shall be stainless steel.

4. Equipped with alternators that shall recognize the fail/available pumps and will alternate between available pumps.

5. Components: a. Hand/Off/Auto switch for each unit. b. Run/Stop switch for each unit (enabled only when HOA switch is

in Hand position). c. Run/Stop lights for each unit. d. High temperature alarm light for each unit. e. Vibrations alarm light for each unit. f. Low level alarm light , hardwired to turn off the pumps. g. High level alarm light. h. Common Trouble Alarm Light: Weatherproof NEMA 4X fixture

rated for a 100 watt bulb, with red globe and guard mounted on top or side of control panel, manufactured by Crouse Hinds or equal. Include panel door-mounted push-to-test and a reset push-button.

i. Audio Alarm: Weatherproof audio alarm, manufactured by Edwards, model 340 A-N5 or equal. Include push-to-test, silence, and reset push-button.

j. Lightning Arrester: Three-pole thyrite unit mounted in panel. k. Running Time Meters: Include nonresettable elapsed timer for

each unit. l. Remote Monitoring Contacts: Provide unpowered dry type

contacts and analog outputs as indicated in PLANS for remote monitoring of the following conditions: 1) Pump run status (for each pump). 2) Pump fail alarm (for each pump). 3) Pump Motor current signal (for each pump) 4) High Wet Well Level Alarm 5) Low Wet Well Level Alarm 6) Wet well water level signal

6. Provide an emergency stop button in the proximity of each pumping unit.

By pushing the emergency stop button the unit will be stopped disregarding the position of the HOA switch for that unit.

7. Furnish motor starters in accordance with Section 13390. Motor starters for all pump motors 100 HP or larger shall be solid state reduced voltage soft starters.


Job No. 60323427

N. Accessories

1. Primary level measurement: i. Level Probe: The probe shall be designed to be lowered into the

wetwell from the top, suspended by its own cable. A mounting kit shall be provided with the probe that contains a 316 stainless steel bracket that has an integral cleaning device. Probe sensors shall be Avesta 240 SMD high grade stainless steel alloy (or approved equal) and shall be spaced at equal intervals along the length of the probe. The probe casing shall be UPVC premium quality extruded tube.

2. Secondary level measurement (redundant): i. Float Cable Racks: Level sensor floats shall be suspended in the wet

well from a cable rack. Each rack shall be provided with six, 3/16 inch diameter hooks over which the level sensor cables shall be looped. The cable rack shall be stainless steel.

O. Spares 1. Provide a field repairable spare parts kit for each separate size of pump

seal furnished. 2.03 FABRICATION (NOT USED) 2.04 SOURCE QUALITY CONTROL

A. Factory Test 1. Hydrostatically test each bowl to 150 percent of shut-off head, test

duration per HI 14.6-Appendix B.2. Non-witness performance test each bowl assembly to Hydraulic Institute Standard acceptance grade 1U (no negative tolerance)

PART 3 - EXECUTION 3.01 - 3.02 (NOT USED) 3.03 ERECTION/INSTALLATION/APPLICATION AND/OR CONSTRUCTION

A. For installations where pump is set in open pit, block pump in place and bring piping up to pump. Align pump and piping so that no strains from piping will be transferred to pump. Level the soleplate to within 0.003” per foot of soleplate length. Contractor to epoxy grout sole plate in place. After grout has set, recheck alignment with piping and make corrections to piping.

B. Special Precautions: Check setting of impellers and make sure rotating elements

are free before turning on power. Check rotation of motor with pump drive disconnected.

3.04 REPAIR/RESTORATION (NOT USED) 3.05 FIELD QUALITY CONTROL

A. Manufacturer’s Service


Job No. 60323427

1. Furnish installation and startup assistance services (7 days minimum) and training (one day minimum) in accordance with Section 01445, “Manufacturers Field Services”.

B. After installation and as soon as conditions permit full speed operation, using

calibrated flow meters and calibrated pressure instruments, measure and record flow and pressure during operation of each pump individually, each combination of two pumps, and all three pumps operating simultaneously for pumps EPS-EFP-001 through EPS-EFP-003. Perform the same set of measurements for pumps EPS-EFP-007 through EPS-EFP-009. Submit written test report including calibration certificates to ENGINEER for review in accordance with Section 01300, to confirm operation in acceptable range on pump curve for all pump combinations.

C. After installation and as soon as conditions permit full speed operation, and in the

presence of the ENGINEER, have vibration tests performed on each proposed or refurbished/relocated existing Pump Unit to: 1) prove compliance with specified limitations; and 2) prove that there are no field installed resonant conditions due to misalignment, the foundation, or the connecting piping and its supports, when operating at any speed within the specified operating range.

D. If required, take corrective action and have the Pump Units retested to ensure full

compliance with the specified requirements. All costs associated with the field tests or any required corrective action shall be borne by the CONTRACTOR.

E. The vibration analysis indicated above shall be repeated 6 months after signature

testing. A report shall be prepared comparing the results of the 6-month tests with the results of the signature tests. Significant worsening of the vibration, to be determined by the ENGINEER, during the 6-month tests shall require corrective action and retesting.

3.06 ADJUSTING

Manufacturer’s technical representative to inspect, check, assist in making adjustments if necessary, and approve for placing in operation.

3.07 - 3.10 (NOT USED) 3.11 MEASUREMENT AND PAYMENT

No separate measurement or payment for work performed under this Section. Include cost of same in Contract price bid for work of which this is a component part.

Attachment “A”


Job No. 60323427

ATTACHMENT “A” PERFORMANCE REQUIREMENTS FOR EFFLUENT PUMPS 1. Proposed Effluent Pumps at Proposed Effluent Pump Station A. General

1. Number of Unit(s): 3 2. Designation of Pumping Unit(s): EPS-EFP-007, EPS-EFP-008, EPS-EFP-009 3. Service: Non-Potable Water (Effluent Pumping to Discharge) 4. Pumping Unit Drivers: Solid Shaft Electric Motor 5. Reference Model: Flowserve 23ELL, Curve No. EC-2033

B. Pump Performance Requirements

Parameter Pump

Requirements

First Rating Point: Pumping Capacity Pumping Head (Note 1)

4,361 gpm 217 feet

Minimum Overall Pump Efficiency at First Rating Point 82%

Second Rating Point: Pumping Capacity Pumping Head (Note 1)

6,000 gpm 128 feet

Maximum Number of Pump Stages 6

Pump Speed (rpm) not to exceed 900 rpm

Bowl Horsepower (Note 2) 289 HP

Maximum Motor HP (Excluding Service Factor) 300 HP

Net Positive Suction Head Required (NPSHR) at all Rating Points not to exceed

15 feet

Head at MCSF (Minimum Constant Flow) to exceed 250 feet

Capacity at MCSF (Minimum Constant Flow) to exceed 1,500 gpm

Shutoff Head to exceed 300 feet

Run-out point Pump Head to be less than 120 feet

Run-out point Pump Capacity to exceed 6,200 gpm

Discharge Head Flange Size (max) 14 inches

Column Size (max) 14 inches

Note 1: Pump supplier to add strainer, bowl, column and pump head losses to the specified pump head.

Note 2: Listed bowl horsepower is not to be exceeded at the motor coupling at any point of the head-capacity curve including line, bearing, seal, coupling, etc. losses.

C. Electric Motor per Specification Section 15173, “Electrical Motor, Vertical Induction”.

Parameter Pump Motor

Requirements

Maximum Horsepower Rating 300 HP

Attachment “A”


Job No. 60323427

Nominal Speed 900 rpm

Voltage 480 VAC, 3-phase, 60 Hz

Enclosure WP-1

Shaft Solid

Minimum Full Load Power Factor 90%

Machine Monitoring (Notes 1 & 2)

Note 1: Thermal sensors and vibration detection required, wired to each terminal block inside the low voltage terminal cabinet.

Note 2: Drill and tap mounting hole for mounting vibration indicating transmitter in the motor housing. Determine the location of the vibration indicating transmitter mounting hole that will provide the maximum sensitivity to vibration measurement. Install vibration indicator transmitter.

2. Proposed NPW Pump at Existing Effluent/NPW Pump Station A. General

1. Number of Proposed Unit(s): 1 2. Designation of Proposed Pumping Unit(s): EPS-EFP-006 3. Service: Nonpotable Water (Plant Service Water/Offsite Effluent Reuse) 4. Pumping Unit Drivers: Solid Shaft Electric Motor 5. Existing NPW Pumps: Byron Jackson 10” G “H” Imp. 6-3/4”, 3 Stages, 1770 rpm

B. Pump Performance Requirements

Parameter Pump

Requirements

First Rating Point: Pumping Capacity Pumping Head (Note 1)

625 gpm 122 feet

Minimum Overall Pump Efficiency at First Rating Point 79%

Maximum Number of Pump Stages 3

Pump Speed (rpm) not to exceed 1770 rpm

Brake Horsepower (Note 2) 27 HP

Maximum Motor HP (Excluding Service Factor) 30 HP

Net Positive Suction Head Required (NPSHR) at All Rating Points not to exceed

12 feet

Head at MCSF (Minimum Constant Flow) to exceed 144 feet

Capacity at MCSF (Minimum Constant Flow) to exceed 280 gpm

Shutoff Head to exceed 150 feet

Run-out point Pump Head to be less than 84 feet

Run-out point Pump Capacity to exceed 880 gpm

Discharge Head Flange Size 8 inches

Column Size 8 inches

Note 1: Pump supplier to add strainer, bowl, column and pump head losses to the specified pump head.

Attachment “A”


Job No. 60323427

Note 2: Listed brake horsepower is not to be exceeded at the motor coupling at any point of the head-capacity curve including line, bearing, seal, coupling, etc. losses.

3. Existing 100-HP Effluent Pumps – Refurbishing / Modification / Relocation A. General

1. Number of Existing Unit(s): 3 2. Designation of Pumping Unit(s): EPS-EFP-001, EPS-EFP-002, EPS-EFP-003 3. Pump manufacturer’s authorized technical representative to modify, refurbish,

and relocate (3) existing vertical turbine pumps as required for installation in new Effluent Pump Station. Modifications include additional column, line-shaft, shaft bearings, and couplings as required to meet minimum submergence requirements of pump model with respect to low wet well water level.

4. Prior to removal, pump manufacturer’s authorized technical representative to perform field operational and inspection services at existing Effluent/NPW station to establish baseline performance data for existing pumps prior to refurbishment and modifications.

5. Pump manufacturer’s authorized technical representative to furnish truck with trailer sufficient to transport pump to Contractor’s shop. Provide dunnage and rigging as necessary for secure transport. Contractor to provide crane necessary to load pump, as well as be responsible for wiring/unwiring motors.

6. Pump manufacturer’s authorized technical representative to remove existing pumps from service in field, and transport to manufacturer facilities for shop inspection.

7. Prior to disassembly, measure and record bowl assembly length, column lengths, discharge head length, and other pertinent dimensions to produce an “As Found” general arrangement drawing of the pump.

8. Pump manufacturer’s authorized technical representative to perform shop disassembly and inspection of three (3) existing effluent pumps, to include complete teardown and mechanical inspection. A complete inspection report is to be submitted to the Owner detailing findings and recommended repairs.

9. Pump manufacturer’s authorized technical representative to modify and refurbish pumps as required to meet Owner requirements, deliver refurbished/modified effluent pumps to jobsite, and reinstall at new Effluent Pump station.

10. Pump manufacturer’s authorized technical representative to perform field operational testing and field services at new Effluent Pump Station after installation to verify post refurbishment/modification performance.

B. Bowl and Shaft Inspection

1. Completely disassemble bowl assemblies and record condition of all components (shaft, bearings, wear rings, casings).

2. Inspect casings for cracks and chipped surfaces. If casings are flanged connection, measure registers and concentricity.

3. Measure impeller to case wear ring clearances. Any bronze wear rings exceeding standard clearance tolerances must be replaced and clearances restored per manufacturer’s recommended machining tolerances.

Nominal Wear Ring Size (in)

Diametrical Clearance Min. (in)

Diametrical Clearance Max.(in)

0” thru 5.99” 0.014” 0.021”

6.0” thru 7.99” 0.016” 0.024”

Attachment “A”


Job No. 60323427

8.0” thru 11.99” 0.018” 0.027”

12.0” thru 19.99” 0.020” 0.030”

20.0” thru 29.99” 0.022” 0.023”

30.0” thru 39.99” 0.024” 0.036”

40.0” thru 49.99” 0.026” 0.039”

50.0” thru 59.99” 0.028” 0.042”

4. Measure bearing to shaft clearances. Any bronze bearings exceeding standard

clearance tolerances must be replaced and clearances restored per manufacturer’s recommended machining tolerances.

Nominal Bearing Size (in)

Diametrical Clearance Min. (in)

Diametrical Clearance Max.(in)

0” thru 3/4" 0.007” 0.011”

13/16” thru 2-3/16” 0.010” 0.015”

2-1/4” thru 4” 0.011” 0.017”

5. Measure shaft diameter and check for straightness. Any shafting exceeding

diameter or straightness tolerances must be replaced or corrected. Shaft straightness shall be checked and corrected to 0.003” T.I.R. at any point along the shaft. Shafting that cannot be corrected must be replaced.

Nominal Shaft Size (in) Diameter Tolerance (in)

3/4" thru 1-1/2” +0.000/-0.001

1-5/8” thru 4 “ +0.000/-0.002

a. If resurfacing: 1. Turn down worn shaft area to clean up base metal surface. 2. Clean surface to be overlayed or plated by blasting 3. Restore surface by either thermal spray or electroplating.

6. Inspect condition of all impellers. Verify no material defects are present, such as holes, signs of pitting, cavitation, and verify that vanes have sufficient thickness to place back into service. All impellers must be trued up and balanced to ISO G2.5 or better prior to reassembly. Balance report must be provided to verify compliance.

C. Column Inspection

1. Complete full column inspection to verify flange concentricity and parallelism to ensure the line-shafting is properly aligned to bowl and motor shaft.

2. Measure concentricity between opposing flange registers. Registers exceeding

recommended tolerances should be repaired or restored.

Register Diameter (in) Allowable Tolerance (in)

3" thru 17” +0.003”

18“ thru 47” +0.005”

Attachment “A”


Job No. 60323427

3. Measure clearance between male and female flange registers. Registers exceeding recommended tolerances should be repaired or restored.

Register Diameter (in) Allowable Tolerance (in)

3" thru 11” -0.000/+0.002”

11” thru 47“ -0.000/+0.003”

4. Measure parallelism between opposing flange registers. Registers exceeding

recommended tolerances should be repaired or restored.

Flange Diameter (in) Allowable Tolerance (in)

6” thru 47” +0.003”

D. Coupling Inspection

1. Complete inspection of all couplings. Check thread condition on any threaded coupling. Couplings with damaged thread shall be replaced. Check condition of keyways on and keyed couplings. Inspect for material defects, or signs of wear. All stainless steel keys must be replaced. Any signs of fatigue or wear on the couplings will require replacement.

E.. Discharge Head Inspection

. 1. Inspect overall condition discharge head. Evaluate condition of base flange, discharge flange, and top flange of head for motor connection.

2. Inspect condition of stuffing box. Inspect for cracks and other wear and tear that would be detrimental to overall life of the stuffing box. Verify condition of threaded bolt holes for mounting stuffing box in discharge head. All stuffing box bolting should be replaced. Stuffing box bearing should be replaced if evidence of excessive wear, or if clearances exceed tolerances listed above for bearing to shaft clearance. Inspect packing gland and lantern rings, if present. All packing should be replaced. If pumps are equipped with mechanical seals, seals should receive full inspection to verify machined components have not been compromised.

F.. Pump Modification

1. Pump manufacturer to fabricate additional columns and shafting as necessary to lengthen (3) existing Flowserve 15EHL-2 stage vertical turbine pumps. Estimated pump extension to be 9.27’ minimum.

2. Column diameter and flange patterns to be identical to existing. Additional column length as required to achieve necessary depth, with bearing spacing as necessary to avoid 1st and 2nd critical speeds with 25% separation margin.

3. Shaft diameter to be identical to existing, if possible. Shaft length to be as required to achieve necessary depth, with total shaft length as necessary to avoid 1st and 2nd critical speeds with 25% separation margin, while providing adequate material strength for the application.

4. Pump manufacturer responsibility to verify adequacy of modifications and provide analysis verifying 1st and 2nd critical speeds shall be avoided with 25% separation margin.

5. Due to modifying overall pump length, it may be necessary to modify existing shaft size and bearing spacing to avoid any critical speed excitations. Pump manufacturer to include any additional modifications in shop inspection report for

Attachment “A”


Job No. 60323427

Owner approval. Rework of existing column/shafting to be included in list of recommended repairs, if necessary.

G.. Shop Inspection Report

1. After complete inspection, the Pump Manufacturer’s authorized service representative shall provide report to Owner for approval detailing findings. Report shall include as received photos, and an adequate number of photos during the teardown procedure to verify report findings. Report shall include a list or recommended parts to repair and/or replace. Report shall also include any additional modifications required to lengthen pump as necessary for installation in New Effluent Pump Station. Owner approval of inspection report is required prior to authorization for Pump Manufacturer’s service representative to perform any repairs or modification.

2. Pump manufacturer shall include in price of their bid the labor necessary to

perform teardown, inspection, re-assembly, and provide detailed report. Any repairs recommended shall be purchased under separate contract, purchase order, or via change order to overall contract price.

H.. Pump Relocation 1. After modification and refurbishment, pump manufacturer to deliver complete

VTP units to new Effluent Pump Station. Furnish new sole plate with each relocated pump meeting pump manufacturer’s requirements, and grout in place level in accordance with Item 3.03.A of this Section. Manufacturer’s authorized service representative to perform field service and start-up as detailed elsewhere in this specification.

END OF SECTION

Non-Standard/04/12/18 11310 - Page 1 of 15 Sewage Pumps, Submersible, Non-clog

Job No. 60323427

SECTION 11310

SEWAGE PUMPS, SUBMERSIBLE, NON-CLOG

PART 1 – GENERAL

1.01 SUMMARY This Section includes the furnishing and installation of submersible nonclog pump(s), control panels, and accessories as shown on PLANS and specified herein. Units are to be capable of being installed and removed without entering wet well. Furnish and install under this Section: A. Influent Lift Station Expansion 1. Seven proposed pumps, specified in this Section

a. Five proposed pumps installed in existing wet well, using existing guide rails and base elbows

b. Two proposed pumps installed in proposed wet well with new guide rails and base elbows

2. Replace existing control panel at existing wet well with proposed control panel providing control functionality and alarms for five proposed pumps furnished under this Section

3. Furnish proposed duplex control panel providing control functionality and alarms for two proposed pumps furnished under this Section

4. Guide rails and all accessory items internal to wet well, are required for two proposed pumps furnished under this Section

B. Plant Drain Lift Station Expansion 1. Two proposed pumps, specified in this Section, installed in proposed wet well.

2. Guide rails and all accessory items internal to wet well, required for two proposed pumps furnished under this Section

3. Duplex control panel for proposed pumps furnished under this Section 4. Modifications or replacement of the existing control panel at the existing plant

drain lift station wet well, to provide remote monitoring functionality as described in this Section.

C. Accessories and ancillary items as shown on PLANS and specified herein.


A. “Attachment A” to this Section designates acceptable manufacturers, number of units, performance, sizes, motor characteristics, and special features.

B. Other related work as called for on PLANS or specified elsewhere in this or other Technical Specification Sections.

C. Furnish control panels in accordance with Section 13390 and Instrumentation and Control System requirements in PLANS.

1.03 REFERENCES

All pump/ motor assemblies shall be designed, constructed, and tested according to the latest applicable sections of AFBMA, AISI, ANSI, ASTM, Hydraulic Institute, IEEE, NEC, NEMA MG-1, NFPA, and UL standards. Requirements listed in the drawings and specifications are considered additional to the standard requirements listed below.


Job No. 60323427

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

AMERICAN BEARING MANUFACTURERS ASSOCIATION (ABMA)

ABMA 9 Standard for Load Ratings and Fatigue Life for Ball Bearings

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI B16.5 Standard for Pipe Flanges and Flanged Fittings

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

ASTM A48/A48M Standard Specification for Gray Iron Castings ASTM A276 Standard Specifications for Stainless Steel Bars and Shapes

NATIONAL FIRE PROTECTION AGENCY (NFPA)

NFPA-70 National Electrical Code

1.04 - 1.05 (NOT USED)

1.06 SUBMITTALS

Submit the following in accordance with Specification Sections 01300 “Submittals” and Specification Section 01730 “Operation and Maintenance Data”.

A. Shop Drawings 1. Pump design data including name of pumping unit Manufacturer, pump model

number, rotating speed, proposed impeller size, maximum and minimum impeller size to fit proposed pump case, type of wear rings and materials for impeller and case wear rings, type of pump bearings (radial and axial), type of mechanical seal and materials of construction, net weight of pump and net weight of base plate.

2. Factory-certified pump performance curve showing capacity in gpm versus total dynamic head (TDH), NPSH required, brake horsepower required, operating speed, and wire-to-water efficiency. Curve to be complete from shut-off to minimum TDH.

3. Dimensioned installation drawings. 4. Motor design data and rating, including motor manufacturer’s name, type of motor

and/or motor enclosure type, insulation class and type, temperature rise over 40

°C ambient, service factor, frame size, rated horsepower, full load speed,

operating voltage (volts at 60 Hz), locked rotor current (amps and/or letter code), full load current (amps), starting inrush magnetizing current (% of full load, amps), motor stator winding resistance (ohms) and net motor weight.

5. Complete outline drawing of the pump and motor showing overall dimensions, installation details, location of terminal boxes, mounting provisions, and lifting provisions. Sectional drawing showing all components and a list of materials for each component per ANSI, ASTM, NEMA. Show motor shaft diameter at all points.

6. Wiring schematics, layout drawings, bill of materials and component descriptive date for all control panels to be furnished.

7. Information covering availability of parts and service. 8. For proposed pumps to be installed in existing wet well, pump manufacturer shall

submit shop drawings and material list for any required adaptors, along with written certification that pumps are compatible for installation and use with


Job No. 60323427

existing guide rails and base elbows (Flygt, 2” T316SS guide rails; base elbows originally furnished with existing Flygt N 3153.180 / Flygt NP 3153.181 pumps).

B. Operation and Maintenance Manuals

C. Certified Report: Furnish three copies of a report prepared by manufacturer’s technical representative certifying satisfactory installation, operation, and in service placement of units.

1.07 QUALITY ASSURANCE

A. System Coordination: Contractor is responsible for all details necessary to properly install, adjust, and place in operation a working system.

B. Standardization: All pumps to be product of a single manufacturer. Pumps for installation

in existing influent lift station wet well shall be compatible with existing Flygt guide rail systems.

C. Motor compatibility: The manufacturer shall ensure that the motor included with the pump

is compatible with the pump equipment and complies with these specifications.

D. For pumps to be installed in proposed wet wells, pump vendor to design and provide pump guide rail system. For pumps to be installed in existing wet well, pump manufacturer to confirm compatibility of proposed pumps for use with existing guide rail system and base elbows, and furnish all required adaptors.

1.08 DELIVERY, STORAGE, AND HANDLING A. Deliver, unload, and store products on site in manner that prevents damage. Use special

care to prevent damage from temperature and condensation.

B. Flanges to be protected by wooden blank flange protectors, strongly built and securely bolted thereto, or otherwise attached.

C. Power and control cables to be shipped with securely attached caps on cable ends to

prevent moisture wicking into cable while stored.

1.09 - 1.11 (NOT USED)

PART 2 – PRODUCTS

2.01 MANUFACTURER(S)

See Attachment “A.”

2.02 MATERIALS AND/OR EQUIPMENT

A. Pumps 1. Casing: Flanged, ASTM A48 Class 30 minimum, gray cast iron, designed to be

supported from discharge elbow; smooth rounded passages to minimize clogging. All surfaces coming into contact with wastewater, other than stainless steel, shall be factory sprayed with alkyd primer and a chloric rubber paint finish.

2. Volute: Single piece gray cast iron ASTM, A48 Class 35B, non-concentric design with smooth passages large enough to pass any solids that may enter the impeller. The volute shall have integral spiral-shaped, sharp-edged groove(s) that is cast into the suction cover.


Job No. 60323427

3. Impeller: Gray cast iron ASTM A-48, Class 35B, dynamically balanced, semi-open, multi-vane, back swept, screw-shaped, non-clog design. The impeller leading edges shall be mechanically self-cleaned automatically upon each rotation as they pass across a spiral groove located on the volute suction. The impeller to volute clearance shall be readily adjustable by the means of a single trim screw. The impellers shall be locked to the shaft, by an impeller bolt and shall be coated with alkyd resin primer.

4. Pump Shaft: 431 series stainless steel or high carbon steel isolated from liquid pumped.

5. Seals: Tandem mechanical seal system. Lower seal to have stationary and rotating lapped seal faces of tungsten carbide; upper to run in oil-filled chamber and to have stationary ceramic or tungsten carbide ring and rotating carbon or tungsten carbide ring. Each seal to have separate springs and positively driven rotating members. Each pump shall be provided with a lubricant chamber for the shaft sealing system that shall have one drain and one inspection plug that are accessible from the exterior of the motor unit. The leakage chamber shall be equipped with a float type switch that will signal if the chamber should reach 50% capacity.

6. O-rings: All O-rings shall be made of Buna N Rubber or approved equal.

B. Motor 1. Sized to be nonoverloading at any point on the pump performance curve without

exceeding 90 percent of the service factor rating. 2. Insulation: Moisture-resistant Class H minimum 180°C/356°F. 3. Design: Squirrel cage induction, NEMA Design B for continuous operation. 4. Shaft: The motor shaft shall be constructed of solid stainless steel. 5. Bearings:

a. Permanently lubricated, anti-friction ball bearings. The upper bearing shall be a single ball type bearing to handle radial loads. The lower bearing shall be a two row angular contact ball bearing to handle the thrust and radial forces

b. Bearings to have an L10 “rating life” of 50,000 hours per ABMA 9. 6. Cooling: Motor to have sufficient cooling and insulation to withstand ten (10)

starts per hour. Each unit shall be provided with an integral motor cooling system. A motor cooling jacket shall encircle the stator housing. An impeller, integral to the cooling system and driven by the pump shaft, shall provide the necessary circulation of the cooling liquid through the jacket. The cooling system shall provide for continuous pump operation in liquid or ambient temperatures of up to 104 deg F.

7. Equip with three (3), normally closed, thermal switches (one per phase) embed in the coils of the stator windings. Switches to open on rise in temperature. Thermal switches shall be used in conjunction with and supplemental to external motor overload protection and shall be connected to the motor control panel

8. Motors over five (5) HP to be equipped with a terminal board with threaded compression type binding posts for power cable connection. Terminal board to be in separate junction chamber sealed from stator housing.

9. Motor Protection Devices: Motor shall have a moisture leak detector sensor in the seal chamber or motor housing to detect the collection/leakage of water into the motor housing and actuate designated applicable contact signals. Pump/motor manufacturer shall furnish applicable moisture sensory components and a complete schematic and wiring diagram.

10. Motor Cable: Special submersible service cable with Hypalon jacket in one continuous length from pumping unit to the junction box. Cable shall be oil and watertight, rated for continuous submergence service. Cable conductors shall be copper, sized and rated per NEC. Cable shall be sized using 125% of motor nameplate. Power cable shall include a dedicated ground conductor. Coordinate cable length with the PLANS.


Job No. 60323427

11. Cable Sealing: Separate entry compartment with external mechanical clamp and internal separate compartment sealed from above and below to prevent migration of moisture and gas through conductors.

C. Fastenings and Fittings: Nuts, bolts, and fasteners within wet well or exposed to liquid pumped to be type 304 stainless steel.

D. Accessories

1. The pump manufacturer shall furnish all station hardware and accessories for use with the pumps furnished as indicated in the PLANS or other sections of the Contract Documents. Five proposed pumps will be installed on existing base elbows and guide rails in existing influent lift station wet well. Two proposed pumps will be provided with proposed base elbows, guide rails, and all accessories, in proposed influent lift station wet well. Two proposed pumps will be provided with proposed base elbows, guide rails, and all accessories, in proposed plant drain lift station wet well.

2. Discharge Elbow: Construct of ASTM A48 cast iron with ANSI Class 125 flanged outlet. For pumps without legs, design to support entire weight of pumping unit.

3. Guide Rails and Brackets: Provide sliding guide bracket of 316 stainless steel. Guide rails to be minimum 2-inch diameter, schedule 40, 316 stainless steel pipe. Upper guide bar support to be fabricated from 316 S.S. Lower guide bar support to be integrally cast boss on discharge elbow, arranged so that guide bar is held in position by sliding over boss. Provide intermediate guide bar supports, fabricated from 316 S.S. when guide bars exceed 8 feet in length. Bolts are to be type 316 stainless steel.

4. Lift System: Furnish for each unit type 316 stainless steel Flygt “grip-eye” system or equal sized by pump manufacturer; secure with type 316 stainless steel fittings. Provide 316 stainless steel cable or chain for each unit suitable for lifting largest pump furnished, supported in wet well using 316 stainless steel hardware in an accessible location near the access hatch.

5. Access Frame and Covers: a. Furnish and install low zinc, copper free, self-draining aluminum access

hatches of the sizes and locations required by the pump manufacturer for installation and removal of pumps furnished.

b. Design to be single or multiple leaf as required. Door leaves to be minimum 1/4-inch thick aluminum checkered (diamond) pattern plate. Access hatches and frames to be designed to support a minimum live load of 150 pounds per square foot.

c. Frame to have integral drain. d. All hardware to be type 316 stainless steel. e. Equip with padlock hasp and hold-open arm

f. Equip with integral protective grating panel for fall protection. Grating panel to be 1 ½ inches “I” bar aluminum grating, rated for 150 lbs/sf minimum live load and 316 stainless steel hardware.

g. Acceptable Manufacturers: Bilco; Halliday; Flygt; ABS; KSB 6. Float Cable Racks: Level sensor floats shall be suspended in the wet well from a

cable rack. Each rack shall be provided with six, 3/16 inch diameter hooks over which the level sensor cables shall be looped. The cable rack shall be stainless steel.

7. Power Cable Supports: A stainless steel, or nonmetallic cable grip shall be provided for each pump power or pilot cable. The grip shall have a loop on one end which will hang from a hook provided on the upper guide bar bracket.

8. Level Probe: Furnish one Multitrode level probefor each proposed wet well. The probe shall be designed to be lowered into the wet well from the top, suspended by its own cable. A mounting kit shall be provided with the probe that contains a 316 stainless steel bracket that has an integral cleaning device. Probe sensors shall be Avesta 240 SMD high grade stainless steel alloy and shall be spaced at equal


Job No. 60323427

intervals along the length of the probe. The probe casing shall be UPVC premium quality extruded tube. a. Furnish one additional level probe for installation in scum pump station

9. Provide portable jib hoist with capacity and reach suitable for use in lifting the largest pump model furnished in the proposed wet well. Furnish and install 1 (one) or more base sockets for use with the portable hoist, at location(s) as required for removal of the proposed pumps installed in the proposed wet well.

10. Mix/Flush Valve: For each new pumping unit furnished, pump manufacturer is to provide automatically-operating valves to mix the contents of the sump at the start of the pumping cycle. Valves to be direct-mounted on pump volute and shall not interfere with pump removal/replacement. Valves are to be equipped with adjustable wear-resistant discharge nozzles, suitable for Class I Division I conditions, and shall operate automatically by differential pressure without the need for an external power source. Valve closure time shall be adjustable from 20 to 50 seconds.

E. Nameplate: The pump motor assembly shall have a stainless steel nameplate attached to its frame with stainless steel fasteners. The nameplate shall meet the requirements of NEMA MG-1. The following information shall be displayed on the nameplate: 1. Pump manufacturer’s name. 2. Pump model number. 3. Pump serial number. 4. Rated capacity in gallons per minute. 5. Rated total dynamic head in feet. 6. Pump speed. 7. Pump bearing information. 8. Motor frame description. 9. Motor horsepower. 10. Service factor. 11. Motor speed. 12. Motor voltage, phases, and frequency. 13. Motor wiring diagram. 14. Motor amperage at full and no load.

2.03 CONTROL PANELS

A. General: This specification requires the pump supplier, through the Contractor, to be responsible for proper electrical protection and control operation as may be necessary to preserve the special pump warranty. It is the intent of these specifications that electrical control utilized for pump operation be supplied to the Contractor by the pump supplier in order to assure unit responsibility for equipment selection, component compatibility, start-up operational checks and future service

B. Design: Pump supplier's control and alarm system to be designed to function with pumping

units as follows:

1. Influent Lift Station Existing Wet Well: Existing control panel is to be replaced by a

proposed control panel, designed to control five proposed pumps of the type specified within this section. Control panel shall be factory wired and tested. Controls to automatically start and stop pumping units based on level setpoints and permit manual operation at the panel.

2. Influent Lift Station Proposed Wet Well: A duplex control panel is to be furnished,

designed to control two proposed pumps of the type specified within this section. Control panel shall be factory wired and tested. Controls to automatically start and stop pumping units based on level setpoints and permit manual operation at the panel.


Job No. 60323427

C. Plant Drain Lift Station: A duplex pump control panel is to be furnished and designed for two proposed pumps. Control panels shall be factory wired and tested. Controls to automatically start and stop pumping units based on water level in the wet well, and permit manual operation at the panel.

D. The control panel shall be furnished by the pump supplier and shall be factory wired and

tested prior to shipment. The control panel shall include but not be limited to the following:

1. Incoming power, neutral, and ground lug connections. 2. Motor circuits protectors for motor circuit. 3. Thermal magnetic breakers for control circuits. 4. Magnetic starters with overload protection for each motor phase with manual reset.

For pump motors 60 HP or larger, motor starters furnished shall be solid state reduced voltage soft starters meeting requirements specified in Section 13390.

5. Automatic alternator. 6. Leak Detection. 7. 115 volt control power. 8. Hand-off-automatic (HOA) selector switches with red running lights. 9. High level alarm light, weatherproof, vapor-tight, with red globe, 100 watt, flashing.

Alarm light and panel enclosure to be suitable for remote mounting of alarm light above control panel shade structure.

10. Aluminum inner deadfront door. 11. Run time meter for each pump. 12. Power monitor. 13. Space heater with thermostat. 14. Surge arrestor. 15. Control voltage transformer. 16. NEMA 4x hand off automatic selector switches. 17. Flygt Multitrode controller (s) 18. Terminal blocks as required for connection of pump and level sensor cables. 19. 115 volt standard convenience receptacle and panel work area lighting. 20. Lightning arrestor.

E. Level Control System:

1. Influent Lift Stations: The level control system for the pumps in the existing influent

lift station wet well shall utilize one (1) existing or proposed Flygt Multitrode level

probe and two (2) existing or proposed Flygt Multitrode MT2PC controllers to control

the level; provide automatic alternation of the pumps; and should the flow exceed the

capacity of one or more pumps and the liquid level continue to rise, start the

additional pump (s). The level control system for the pumps in the proposed influent

lift station wet well shall utilize one (1) proposed Flygt Multitrode level probe and

one(1) proposed Flygt Multitrode MT2PC controllers to control the level; provide

automatic alternation of the pumps; and should the flow exceed the capacity of one

or more pumps and the liquid level continue to rise, start the additional pump (s). An

alarm light shall also be triggered at high water levels. Alarm light shall be manual

reset. Levels shall be set as indicated on the PLANS.

Alternative control panel configurations using PLCs or hard-wired control systems in

compliance with Section 13390 and meeting requirements herein will be acceptable.

If PLC(s) are furnished in the control system, panel shall include cooling and a PLC

fail alarm signal shall be provided from each control panel containing a PLC and

routed to the Operations building PLC termination cabinet.

The Controllers for pumps installed in the existing influent lift station wet well shall be

linked together with the integral communication ports.


Job No. 60323427

a. Of the five proposed pumps in the existing wet well, the 2 (two) rated at 20

HP shall serve as the lead and first lag pump, and shall start by use of

control levels, with the lead and first lag pump alternating upon starting or

every 24 hours. The remaining 3 (three) proposed pumps in the existing

wet well, rated at 25 HP, shall serve as the second, third, and fourth lag

pumps, and the starting sequence shall alternate among the three pumps

upon starting or every 24 hours. In the event that the lead and first lag

pumps are operating and the level continues to rise, the controller will initiate

operation of the proposed 25 HP pumps sequentially based on level, and will

continue to operate all pumps that have been started until the level returns

to the normal pumps-off level.

b. The two proposed 60-HP pumps in the proposed wet well shall operate

independently as a duplex station. Control elevations shall be set to allow

the pumps to function as the fifth and sixth lag pumps for the influent lift

station, and the starting sequence shall alternate between the two pumps

upon starting or every 24 hours. If all five of the proposed pumps in the

existing wet well are operating and the level continues to rise, the controller

will initiate operation of the proposed pumps in the proposed wet well

sequentially based on level, and will continue to operate both proposed

pumps until the level returns to the normal pumps-off level.

c. A backup level control system consisting of float switches will be provided

for the proposed 60-HP pumps in the proposed influent lift station wet well.

The backup float switches shall be integrated into the control panel to

provide redundancy for all pump operation and alarm functions as indicated

on the plans or specified herein, including all remote monitoring outputs

required for the primary level control system.

d. Load diversification: Provide contacts, relays and control logic at each

influent lift station control panel to diversify loads during emergency power

(generator) operation, based on discrete output from the PLC(s) at the

Operations Building. Control Panels shall automatically lock out pumps

when operating on emergency generator power as follows:

i. A maximum of two 20-HP pumps plus two 25-HP pumps in the existing

influent lift station wet well shall operate on emergency generator power.

ii. A maximum of one 60-HP pump in the proposed influent lift station wet

well shall operate on emergency generator power.

iii. Load diversification shall be accomplished based on total number of

pumps operating, not on lockout of specific individual pumps. In the

event of failure to run of a 25-HP pump and/or a 60-HP pump while on

emergency generator power, the remaining 25-HP and/or 60 HP pumps

shall operate automatically on emergency generator power.

iv. The influent control panels shall allow simultaneous operation of all

pumps when not operating on emergency generator power. Control

panels shall automatically return to normal pump operation sequence

following transfer from emergency generator power to normal power

source.

e. All control panels furnished under this Section shall automatically re-start

pumps following power source interruption, outage, restoration, or transfer.

Provide adjustable restart delay capability for each individual pump to allow

staggered automatic restart of motor loads.

2. Plant Drain Lift Station: The level control system for the proposed plant drain lift

station expansion is to be a stand-alone duplex pump control system, using Flygt

Multitrode level probe for primary level sensing element, incorporating all

requirements shown on the PLANs or as specified herein. The two new pumps shall

serve as the third and fourth lag pumps to the existing plant drain pumps, based on


Job No. 60323427

level. The starting sequence shall alternate between the two proposed pumps upon

starting or every 24 hours. With lead pump and lag pump in the existing wet well

operating and the level continuing to rise, the lag pumps in the proposed wet well

shall start in order shown on the PLANs. All pumps started shall continue to operate

until the wet well water level decreases to the normal pumps-off level.

F. Enclosures: Control panels shall conform to NEMA 4X standards and be constructed of stainless steel. Back-panels for mounting components shall be aluminum. Panels shall be completely dead front and shall have no equipment, pilot lights, push buttons, or other devices installed in the exterior door. All such components required to be panel mounted shall be installed on an internally mounted, hinged, swing-out aluminum subpanel. The subpanel shall have captive screw-fastened latches, shall be capable of being opened a full 90 degrees and shall be grounded. Exterior doors shall be gasketed, padlocking and equipped with luggage type latches. All external hardware shall be stainless steel.

G. Controller: The pump controllers shall be Multitrode type MT2PC or equal. The controllers shall be designed for use with Multitrode probe level sensors and capable of accepting input from backup (float switch) and be capable of alternating two pumps, or up to nine pumps if linked to other similar units. Keypads shall be provided for hand/off/auto operation, resetting of faults, selection of fixed lead pump or an alternation pump sequence, or resetting of level alarms. The keypads shall also be dual purpose to allow programming of the controller.

1. The controller shall have a bar graph to indicate level. LED shall be provided for

pump running, pump set to manual mode, pump set to off mode, pump set to

automatic mode, pump available, fault, critical fault, seal fault, program switch set to

on, alternation selected, alarm, and miscellaneous Led for programming.

2. The controller shall accept a 10-stage multi-sensored conductive probe or a 4-20 ma

analog level signal. In the event an analog signal is used for level measurement, the

unit must switch back to the multi-sensored probe upon failure or erratic input from

the 4-20 ma analog level signal.

3. The unit shall be able to select, automatically alternate the pumps. Next pump to

start will be indicated.

4. The controller shall be capable of programming; pump activation and deactivation,

pump alternating sequence, fail-safe manual override, temporary reset of level

alarms, maximum pump starts and random duty start level.

5. Time delays for pump and alarm activation and deactivation should be available.

These time delays will be selectable from the front keypad for the activation and

deactivation of level set points. The controller shall be capable of programming time

delays of the following manner; inter-pump delay, maximum pump off-time and

maximum pump on time.

6. The unit will monitor the following fault conditions via N/O or n/c inputs; non-critical,

critical, seal, delay fail, seal and thermal inputs and disabling level alarm outputs.

7. The controller shall be capable of RS232 and RS422/RS485 communication links

will be provided for downloading all logged data, and for telemetry. All settings,

parameters and controls will be fully accessible via the communications port or front

keypad. The units will be capable of being networked on an RS485 twisted pair link

so that a number of groups of units and/or pump controllers on different pits/tanks

can be fully controlled and monitored. These units will be capable of interfacing to a

telemetry system using a single two-way radio and/or modem.

8. The unit shall be powered by 110VAC, 10-30V DC or both simultaneously where

redundancy is required. When in DC mode, the unit should monitor mains supply

using an external relay, so that safety delays are maintained during power

restoration. The unit shall have in-built transient protection. When pump is in

manual operation, the unit will automatically return the mode from manual to auto

once the normal pump cut-out level is reached fail safe manual override. Ability to


Job No. 60323427

temporarily override this function will be provided. On commissioning, the water

level should be capable of being simulated on the keypad in order that correct

functioning of the system can be determined.

Alternate control panel configuration may be utilized at the CONTRACTOR’S option to

interface with conventional discrete float switches in lieu of multitrode probes for level

detection, however the control panel must meet all material and performance requirements of

this specification and provide all of the required control functions and features shown on the

PLANS and specified herein.

H. Motor Circuit Protection: Short circuit and locked rotor protection shall be provided for each

pump motor by a molded case circuit breaker with magnetic trip. Trip ratings shall be

selected for motor full load and locked rotor amperage. Voltage rating shall be 480 minimum.

I. Motor Starters: Magnetic type, full voltage start, non-reversing starters shall be provided for

each pump motor. Starters shall be horsepower rated in accordance with NEMA standards,

(IEC ratings are not acceptable). Overload relays shall be NEMA Class 20, ambient

compensated with one thermal element per motor phase and shall be manual reset.

Overload reset shall be accomplished without need to open the inner panel door. Starter

coils shall be 120 volt.

J. Circuit Breakers: Control and accessory circuits 240 volt and less shall be

provided with molded case circuit breakers for short circuit protection and switching.

Breakers shall be UL listed for 120/240 volts with 10,000 AIC. Switching or reset shall be

accomplished without need to open the inner panel door.

K. Control Power Transformers (CPT): Transformers 500 VA and smaller shall be

internally mounted machine tool type specifically designed for high inrush currents of starter

and relay coils. Secondary windings shall be fused and grounded. Fused switches shall be

provided for 480 volt primary windings. Transformers larger than 500 VA shall be externally

mounted outdoor rated dry type.

L. Pilot Devices: All selector switches, push buttons, pilot lights, etc., shall be 30.5

mm heavy duty, nonmetallic, NEMA 4X, Square D Class 9001, Type SK or equal. Push

buttons shall be extended guard type. Pilot lights shall be push-to-test, transformer type.

M. Control Relays: Relays for 120 and 24 volt circuits shall be industry standard

plug-in type with tube type connectors. Contacts shall be rated 10 amps resistive,

continuous. An internal light shall be provided to indicate an energized relay.

N. Space Heater & Thermostat: A 120 volt, 50 watt space heater shall be provided

mounted to the panel back plate and equipped with a protective shield. A separate

thermostat shall be provided for temperature control. The thermostat setting shall be

adjustable to turn the space heater on at 30 to 60EF.

O. Elapsed Time Meters: Meters shall be provided and mounted on the inner panel

door to measure the running time of each pump. Meters shall be five digit, indicate tenths of

hours and be non-resetting. Operating power shall be 120 volt. Relays and interlocks shall

be provided to prevent operation of the meters when motor start circuit or overload devices

are tripped. Elapsed Time Meters shall be Cramer 635G or approved equal.

P. Power Monitor and Surge Protection: Relay for 240/480 volt circuit shall be plug-

in type mounted to the panel back plate. Relay shall be able to detect low voltage, phase

reversal, phase unbalance and can be used in either Wye or Delta configurations. Relay shall

be adjustable and have indicator lights on top of the case for easy access and viewing.


Job No. 60323427

Power monitor shall be a Time Mark 257B or approved equal. The control panel shall also be

equipped with surge protection of the type recommended by the panel manufacturer to

minimize damage due to power surges or lightning strike.

Q. Alarm Light: An outdoor, weatherproof light fixture and red globe shall be

mounted on the side of the exterior panel enclosure utilizing galvanized, watertight hubs and

conduit with the globe vertically below the fixture. The fixture and globe shall NEMA 4X,

nonmetallic and suitably rated for a 100 watt bulb. The alarm light shall be flashing.

R. Legends and Nameplates: Legend plates indicating the operating function of pilot

devices (HOA, RUN, RESET, etc.) shall be aluminum with black background and white

lettering. Nameplates indicating the controlled device shall be black laminated plastic 1/2 inch

wide with 1/4 inch white engraved lettering. Nameplates identifying the control panel and

mounted on the exterior door shall be black laminated plastic 1 inch wide with 3/8 inch white

lettering. Legends shall be mechanically attached with the pilot device. Nameplates shall be

attached with stainless steel screws or epoxy.

S. Float Switches: Float switches installed for the lift station pumps shall consist of

a polypropylene housing, mercury switch, and neoprene jacketed control cable. Float

housing shall be leakproof, shock and corrosion resistant, NO or NC as indicated by the

control schematics. Floats shall be the product of Anchor Scientific, Inc., Consolidated

Electric, Inc., or Flygt Corporation.

T. Lightning Arrestor: Manufacturer’s standard system as recommended by the

panel manufacturer for protection of pumps and control panel furnished.

U. Convenience receptacle and panel light: 115 volt duplex GFI-protected

convenience receptacle rated for outdoor service. Panel to include 115 light suitable for

outdoor service during inclement weather and located to illuminate control panel work area,

with switch.

V. Wiring: Control panels shall be completely factory assembled and prewired. The

pump supplier shall thoroughly test the control panel and level control system for proper

operating sequence under all conditions before shipment of the panel to the jobsite. Control

wiring shall be stranded copper, #14 AWG minimum size. Power wiring shall be stranded

copper, #12 AWG minimum. All wiring insulation shall be dual rated for Type THHN and

THWN applications. Incoming power terminals shall be lug type rated 600 volts minimum.

Separate bare copper ground lugs shall be provided for incoming and pump ground wire.

Screw type terminal strips, shall be provided and suitably identified for termination of field

wired control circuits. Control terminal blocks shall be rated 300 volts minimum and shall

provide four spare, unidentified terminals. External control wiring terminations shall be made

using vinyl-insulated, crimp type connectors, with spade type lugs. Internal Control wiring

shall be labeled at each end with a preprinted, tube type or heat-shrink type wire marker, or

shall be color coded. Wiring diagrams showing control wire numbers, or color coding and

terminal identification shall be included in the Operation and Maintenance Manuals.

W. Proposed influent lift station control panels and proposed plant drain lift station

control panels shall each provide relays and other necessary provisions for remote

monitoring at the operations building of:

i. Common trouble alarm signal at operations building upon:

1. high water level in wet well

2. low water level in wet well

ii. For each individual pumping unit, provide individual remote monitoring of:

1. Pump Failure alarm condition

2. Pump Run status

3. Amperes while running


Job No. 60323427

X. Existing plant drain lift station control panel shall be modified as required to

provide relays and other necessary provisions for remote monitoring at the operations

building of:

i. Common trouble alarm signal at operations building upon:

1. high water level in wet well

2. low water level in wet well

ii. For each individual pumping unit, provide individual remote monitoring of:

1. Pump Failure alarm condition

2. Pump Run status

3. Amperes while running

2.04 SOURCE QUALITY CONTROL

Factory Test: Each proposed pump is to be tested at the factory to determine capacity, shut-off head, rated head, minimum head (for continuous operation), required power, efficiency and as required to develop an accurate performance curve. Certified copies of a report for each test are to be submitted to the Owner. All of the above tests are to be performed in conformity with the requirements and recommendations of the Hydraulic Institute and NEMA MG-1.

PART 3 – EXECUTION

3.01 INSTALLATION

A. Install equipment specified in this Section and associated accessories as per manufacturer’s printed instructions, shop drawings, and recommendations, and applicable requirements of Division 16. Seal all conduits terminating in wet well or control panel to prevent migration of gases. Adjust and secure free length of power and control cables to minimize movement with pump in place.

3.02 FIELD QUALITY CONTROL

A. Manufacturer’s Field Services: Furnish services of manufacturer’s trained, competent, technical representative who has knowledge of the proper installation, operation, and maintenance of the equipment to perform the following:

1. Inspect the completed installation for conformance with manufacturer’s recommended installation requirements;

2. Supervise operational test of each unit; 3. Instruct OWNER’s personnel in operation and maintenance of equipment; and 4. Prepare and certify field inspection report.

B. Inspection: Manufacturer’s technical service representative to perform, at a minimum, the following for each unit:

1. Check seal chamber oil level and lubrication of seals; 2. Check proper rotation; 3. Check power supply voltage; 4. Megger each unit for insulation breaks or moisture; 5. Measure motor no-load current; and 6. Manually trip level sensors and check complete cycle of control operation.

C. Field Tests: Run each unit submerged for not less than 30 minutes. Remove each unit and repeat insulation and moisture test. Raise and lower each unit three times in presence of OWNER and ENGINEER to ensure alignment of guide rail system. Run individual pumps and pump combinations, and record pump discharge pressures for each combination, to confirm all operating points are in satisfactory range on pump curve. Furnish and install temporary pressure gauges as required for testing.


Job No. 60323427

3.03 – 3.10 (NOT USED)

3.11 MEASUREMENT AND PAYMENT

No separate measurement and payment for work performed under this Section. Include cost of same in Contract price bid for work of which this is a component part.

Attachment “A”


Job No. 60323427

“ATTACHMENT A”

PERFORMANCE REQUIREMENTS FOR INFLUENT PUMPS

A. All pumps furnished shall be the product of a single manufacturer. Acceptable Manufacturers: 1. FLYGT (pumps as specified below) 2. Equal by ABS, meeting all requirements of this Section 3. Equal by KSB, meeting all requirements of this Section

B. Proposed Pumps in Existing Wet Well - Interim III (1.75 MGD) Permit Phase Improvements 1. Lead and First Lag Pumps:

a. Quantity: 2 (two) pumps b. Typical Make and Model No: FLYGT N3153.181 MT c. Curve No: 433 237 mm d. Rated Capacity Each: 1442 gpm (two pumps operating) e. TDH at Rated Capacity: 39.3 feet f. Runout Point Pump Head: less than 12 feet g. Minimum Pump Efficiency at rating point 65.4% h. Maximum Driven Speed: 1,755 rpm i. Voltage: 460 Volt - 3 phase - 60 Hz. j. Maximum Motor Horsepower: 20 HP k. Minimum Pump Discharge Size: 6” l. Minimum Solids Handling Size: 3”

2. Second, Third, Fourth Lag Pumps: a. Quantity: 3 (three) pumps b. Typical Make and Model No: FLYGT N3171.185 MT c. Curve No: 462 234 mm d. Rated Capacity Each: 1520 gpm (three pumps operating) e. TDH at Rated Capacity: 42.3 feet f. Runout Point Pump Head: 21.5 feet g. Minimum Pump Efficiency at rating point 75.5% h. Maximum Driven Speed: 1,755 rpm i. Voltage: 460 Volt - 3 phase - 60 Hz. j. Maximum Motor Horsepower: 25 HP k. Minimum Pump Discharge Size: 6” l. Minimum Solids Handling Size: 3”

3. Existing Wet Well: Identical stainless steel guide rails, discharge elbow, and discharge piping were provided for the pumps proposed under this Section during the Phase I Expansion. When the five proposed pumps are installed, the existing guide rails and discharge elbows will not be replaced or taken out of service. Replace existing control panel with proposed control panel and level control devices.

4. Furnish all additional accessories and items shown on the PLANS or specified herein, or as required for a complete and functional system.

C. Proposed Pumps in Proposed Wet Well - Final (3.5 MGD) Permit Phase Improvements 1. Phase II:

a. Quantity: 2 (two) pumps b. Typical Make and Model No: FLYGT N3202.180 LT c. Curve No: 614 356 mm d. Rated Capacity Each: 5590 gpm (one pump operating) e. TDH at Rated Capacity: 32 feet f. Runout Point Pump Head: 9 feet g. Minimum Pump Efficiency at

Attachment “A”


Job No. 60323427

rating point 71.5% h. Maximum Driven Speed: 1,170 rpm i. Voltage: 460 Volt - 3 phase - 60 Hz. j. Maximum Motor Horsepower: 60 HP k. Minimum Pump Discharge Size: 12” l. Minimum Solids Handling Size: 3”

2. Proposed Wet Well: Furnish and install stainless steel guide rail systems, discharge elbow, and discharge piping for two proposed pumps. Furnish and install duplex control panel and level control devices.

3. Furnish all additional accessories and items shown on the PLANS or specified herein.

D. Spare Parts

1. Provide the following spare parts: a. Spare gaskets and O-rings shall be provided for each pump. One spare

seal shall be provided in a sealed factory container for each pump. b. A toolbox shall be supplied. The toolbox shall include all tools needed to

maintain the pump, including any special tools. Any required metric tools shall be provided.

c. Provide one spare set of complete over-temperature sensory components. Provide one spare set of complete moisture leak detector sensory components.

2. Any additional spare parts recommended by the manufacturer shall be provided.

PERFORMANCE REQUIREMENTS FOR PLANT DRAIN PUMPS

E. GENERAL: 1. Service: Raw Sewage 2. Liquid Temperature: 35°F -100°F 3. Number of Pumps: Two 4. Tag Numbers: LSP-01, LSP-02 (or as defined by the Owner) 5. Typical make and Model

a. FLYGT NP3153MT3.434 b. Equal by ABS, meeting all requirements of this Section c. Equal by KSB, meeting all requirements of this Section

F. PUMP PERFORMANCE AND SIZE

a. Rated Capacity Each: 1,079 gpm b. TDH at Rated Capacity: 46.4 feet c. Shut off Head Not to be Less Than 80 feet d. Run-Out Point Pump Head to be Less Than: 20 feet e. Minimum Pump Efficiency at rating point: 70% f. Maximum Driven Speed: 1,760 rpm

G. SIZE REQUIREMENTS

1. Minimum Discharge Size: 6 inches 2. Minimum Spherical Solids Handling Size: 3 inches

H. MOTOR REQUIREMENTS

1. Maximum Horsepower: 20 HP 2. Voltage: 480 volt, 3-phase, 60 Hz 3. Enclosure: Submersible, Explosion Proof 4. Service Factor: 1.15 5. Belt drive service

Attachment “A”


Job No. 60323427

I. Provide and install identical stainless steel guide rail systems, discharge elbow, and discharge piping. Furnish and install duplex control panel and level control devices for two proposed pumps inside the proposed wetwell. The existing level control devices in the existing plant drain lift station shall remain for redundancy.

J. Furnish all additional accessories and items shown on the PLANS or specified herein.

K. Spare Parts 1. Provide the following spare parts:

a. Spare gaskets and O-rings shall be provided for each pump. One spare seal shall be provided in a sealed factory container for each pump.

b. A toolbox shall be supplied. The toolbox shall include all tools needed to maintain the pump, including any special tools. Any required metric tools shall be provided.

c. Provide one spare set of complete over-temperature sensory components. Provide one spare set of complete moisture leak detector sensory components.

2. Any additional spare parts recommended by the manufacturer shall be provided.

END OF SECTION

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