Site Explanation

SITE EXPLANATION(MECHANICAL WORK)

O Mon Thermal Power Plant Unit No.2

March 28, 2013

1. Project overviewDescription

Project Name O Mon Thermal Power Plant Unit No.2 Construction Project

OwnerOwner : EVNGENCO 2Consultant : TEPSCO(Tokyo Electric Power Service Company)

Location O Mon Disctrict, Cantho City, Vietnam(About 200km away from HCMC)

Contract period July 1, 2013 ~ Oct. 31, 2015

Warrant period Warranty Period : 730 days Advance payment 10%

Selecting Subcontractor June 15, 2013

1.1 General

1. Project overview1.2 Site location

호치민에서 남서쪽 150kmCan Tho City 북서쪽 18km

1. Project overview1.3 Overall Site photo

Unit No. 1Power Plant

Unit No. 2Location

1. Project overview85

0m

590m

Cooling Water Piping

Power Block*See the next slide

Switchyard

1.4 Overall Plot Plan

1. Project overview

Power(STG) House

Main Transformer

Boiler

ESP

CCB

FGD

1.5 Plot Plan (Power Block)20

8m

85m

1. Project overview

208m

1.6 Section View (Power Block)

2. Inquiry package2.1 Composition of Inquiry package

2. Inquiry package2.2 Letter of Tender

Subcontractor to input is

1. Tender cost

2. Expiry date of the Tender

3. Signature and address

4. Subcontractor name and address

5. Percentage for overhead charges and profit

6. Initials of signatory of Tender

2. Inquiry package2.3 Schedule

Subcontractor to input is

1. Bill of Quantities

2. Daywork Schedule

3. Break down of Price

Adjustments to Final Amount of Subcontract Work


Price schedule

1. Unit rate in Bill of Quantity shall include indirect cost and O&P

2. Total cost from BILL OF QUANTITY(SUMMARY), Break down of

Price (Summary 1) and Break down of Price (Summary 2) shall

be same

Sample


Optional price – 3 sets of field erection tank (PKG B) Material, pre-fabrication and primer coating


Optional price for NDE (Will be included in Addendum for PKG A) RT, PT, UT and MT

Description Qty Unit Rate(USD)

Amount(USD)

RT 7,000 films

PT 25,000 m

UT 20 m

MT 30 m

2. Inquiry package2.4 Condition of Subcontract

Condition of Subcontract is general condition, and referred by Letter of Tender

Letter of Tender

2. Inquiry package2.5 Specification (Special condition of Subcontract)

Content

1. General

2. Scope of Works and Measurement

3. Free-Issue Materials

4. Technical Specification

5. Other conditionAnnex

1. Detail scope of Work

2. Conceptual Drawing for Definition of Package A and B

3. Measurement Formula for Piping Works

4. Preliminary Construction Schedule

5. Special tools and consumables to be provided by Contractor


Scope of Works and Measurement

1. Mechanical work is divided into 2 packages

2. Package A : Power Block (T/G and BLR, up to GAH outlet)

3. Package B : Non Power Block (EP, FGD and others, from GAH

outlet)

4. Mechanical work includes piping, equipment installation, painting and

commissioning assistance


Conceptual dwg


Piping work

1. Installation of pipe, fitting, flanges, valves, bolts/nuts, inline

instruments and other piping components

2. Installation of support, performing NDE and heat treatment

3. Flushing, blowing and any other pre-commissioning activities.

4. Detail scope as per Specification and Annex 1 (In case any conflicts

arise between Specification and Annex 1, Specification will prevail)


Equipment erection

1. Installation of equipment including piping

2. Delivery condition of pipe, condenser, steam turbine and other

equipment, if available, is stated in Contractor-furnished data

3. Erection of procedure based on Unit No. 1, if available, is stated in

Contractor-furnished data

4. Preparation, temporary structure and any pre-commissioning activities

are Subcontractor scope of work




Equipment delivery condition <Main item> Piping for Boiler and Steam turbine <MHI Piping>

Condenser

Steam turbine

TG & BLR vendor piping

Condenser Steam turbine


Equipment erection procedure for Unit No. 1 <Main item as reference> Generator, steam turbine, condenser, steam drum, heater and etc.

Steam turbine

For condenser installation, some tools and consumables as stated in 2.2.5 Special tools and consumables to be provided by Contractor will be supplied by Contractor


Preparation for erection of main equipment Jack-up system for Generator and Steam drum

Temporary structure for Generator, steam drum, condenser and etc.

Temporary rail for turbine, heater, deaerator and etc.

Note: For transportation of Generator of Unit No. 1, conventional transporter used,

while SPMT will be used for transportation of Generator and other critical

equipment. Thus, quantity of temporary steel structure will be reduced.


Generator Installation

This rail will not be needed

SPMT


Route of SPMT for Generator Installation


Equipment erection

Adjustments to tonnage of Equipment


Painting work

1. Surface preparation, preservation and coating

2. Painting and blasting material

3. Color coding, line marking and touch-up

4. Transportation of Materials/Pipe spools/Equipment from/to painting

shop




Free issue materials

As per Specification

Technical Specification

As per Specification


Other conditions Acquisition of permit by Subcontractor

Temporary facility and utility for Work by Subcontractor

(including sufficient number of portable toilets at Site) Office area by Contractor

(Subcontractor shall carry out back-filling, compaction and gravelling if required)

Shop area by Contractor

(Subcontractor shall carry out glass cutting, grubbing and moving existing material to

Contractor designated place)

Material handling, transportation and storage by Subcontractor

Preservation of Equipment and material by Subcontractor including periodic manual shaft

rotation of Rotating equipment.


Other conditions – Location for Subcontractor office and shop

Shop area

Shop area


Construction schedule

Critical Path (will be included in Addendum) Power receiving: October 1, 2014 Initial Firing: February 15, 2015 Steam Admission: May 23, 2015 Synchronization: June 10, 2015 Take over: October 31, 2015

Preliminary construction schedule

Construction schedule

2. Inquiry package2.6 Drawing, Clauses of Contract

DrawingsBid drawings for reference

Clauses of Contract1) General Condition of Contract

2) Special Condition of Contract

3) General Technical Provisions

4) Technical provision for Civil and Architectural works

5) Technical provision for Turbine generator and Auxiliaries

6) Technical provision for Boiler and Auxiliaries

7) Technical provision for FGD system

2. Inquiry package2.7 Contractor-Furnished data

Package A1) General inspection requirement with inspection and test plan

2) Turbine generator and Boiler vendor piping delivery condition

3) Steam turbine delivery condition

4) Condenser delivery condition

5) FDF and GRF delivery condition

6) GAH delivery condition

7) Deaerator delivery condition

8) Turbine generator and Boiler area vendor piping information

9) Preliminary heavy bulky cargo list for turbine generator and boiler

10) Boiler air & GR duct division instruction

11) Boiler erection procedure

12) Boiler gas duct & structure division instruction


Package A13) Boiler leaving out steel structure division instruction

14) Boiler pressure parts division instruction

15) Boiler steel structure before pressure parts division instruction

16) Condenser supply division instruction

17) Erection procedure for Boiler steel structure

18) Installation procedure for condenser

19) Opening plan for power house & CCB

20) Turbine erection procedure

21) Installation plan for generator, steam drum, heater and etc.


Package B1) General inspection requirement with inspection and test plan

2) ESP preliminary packing list

3) Field fabrication tank reference drawing

Additional data from Unit No.1 (to be included in Addendum)

1) Silencer drawing for blowing out piping

2) Target plate drawing

Silencer drawing Target plate drawing

2. Inquiry package2.8 Clarification (will be included in Addendum)

Site Explanation

Documents

Transcript of Site Explanation