Method Statement for Mechanical Piping

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Project Name : LULU HYPERMARKET IN AL MESSILA, DOHA Location: AL MESSILA, DOHA Project No. : 977 TITLE : METHOD STATEMENT FOR INSTALLATION OF PIPES, FITTINGS & ACCESSORIES FOR DRAINAGE, WATER SUPPLY, FIRE FIGHTING & CHILLED WATER SYSTEMS Client Consultant Contractor MEP Contractor

METHOD STATEMENT FOR INSTALLATION OF PIPES, FITTINGS & ACCESSORIES FOR DRAINAGE, WATER SUPPLY, FIRE FIGHTING & CHILLED WATER SYSTEMS Form No. P07-F06 / Rev. 0 / Nov. 2012 AEB-CSD Quality Forms

METHOD STATEMENT No: 161-MS-MECH –PL-001 REV : 0

ORIGINATOR: ARABIAN MEP CONTRACTING DISCIPLINE: MECHANICAL

TITLE : METHOD STATEMENT FOR INSTALLATION OF PIPES, FITTINGS & ACCESSORIES FOR DRAINAGE, WATER SUPPLY, FIRE FIGHTING & CHILLED WATER SYSTEMS

REV DATE STATUS REVISION DETAILS SUBMITTED BY REVIEWER/

APPROVER ARABIAN MEP MEDGULF AEB

0 15-FEB-15 FA FOR REVIEW & APPROVAL

Status Code: D : Draft FI : For Information FC : For Construction

P : Preliminary FA : For Approval * External Authorization (Client), where required

Distribution :

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Table of Contents Page No.

1.0 Scope /Objectives………………………………………………… 2 2.0 Reference………………………………………….. ……………… 2 3.0 Health and Safety Hazards………………………………………. 2 4.0 Definitions………………………………………………………….. 3 5.0 Responsibilities / Supervision……………………………………. 4 6.0 Procedures /Method to be Employed ……………………………… 6.1 Handling & Storage …………………………………………………. 5 6.2 Preparation ……………………. …………………………………… 6

7.0 Installation of UPV Pipes & Fittings for Drainage services……… 7 7.1 Testing (Gravity leak test)…………………………………………….. 8

8.0 Installation of procedure for Water Supply PPR Pipes & Fittings… 9 8.1 Testing Procedure……….…………………………………………….. 10

9.0 Installation of procedure for Chilled Water Pipes & Fittings………. 11 9.1 Testing (Hydrostatic Pressure Test) ……………………………….. 12

10.0 Installation of procedure for Fire Fighting Pipes & Fittings………. 14 10.1 Testing (Hydrostatic Pressure Test) ……………………………….. 15

11.0 Training………………………………………………………………….15 12.0 Working Hours …………………………….. ……………… 15 13.0 Housekeeping……………………………………………………. . 15 14.0 Plant & Equipment Requirement ………………………………… 15 15.0 Supporting documentation……………………….. ……………… 16 16.0 Documentations ……………………………………………………… 16 17.0 Attachment ………………………………………….. ……………… 16

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1. SCOPE & OBJECTIVES:-

• This method statement covers the site installation of Pipes, Fittings and Accessories for

Drainage, Water Supply, Fire Fighting and Chilled Water System work and associated

materials and the requirements of the checks to be carried out for LULU Hypermarket in Al-

Messila Project.

2. REFERENCES:-

• Project Specification, Volume 3 and section: 19

• Local Authority Regulations (QGEWC).

• QCS 2010

• Approved Material Submittals

• Approved Shop Drawings & Co-ordinate services drawings.

3. HEALTH & SAFETY HAZARDS:- • The Safety of all personnel and equipment is our highest priority during the execution of the

works:

Safety First!

3.1 Personal Protective Equipment (PPE):- All project personnel, subcontractors and visitors will be required to wear as a minimum the

following PPE:

• Safety boots (with steel toecaps and insoles)

• Safety helmet

• Eye protection

• Dust Masks

Compulsory PPE for labour in addition to the above:

• Coverall as protective clothing

• Gloves

To be considered additionally:

• High visibility vest, if working near to construction traffic

• Ear defenders, if working near to the noisy equipment & construction area.

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3.2 Toolbox Talks (TBT):- Site supervisors will give toolbox talks. All attendees will sign to say they have been briefed

and understand all recommendations set out by the Toolbox Talk.

3.3 Material Safety Data Sheets (MSDS):-

All materials pertaining to the activity have to be identified and all material safety data sheets

should be read and understood.

3.4 Lifting: - All material handling using cranes and slings will be performed in accordance with Project

Safety Manual.

3.5 Scaffolding

All scaffolding and ladders required for providing access to the workplace will be erected and

inspected in accordance with the requirements.

3.6 Signage: -

All necessary safety warning shall be displayed at the location of the works.

4. DEFINITIONS:-

• QICR - Qatar Insurance Company

• AEB - Arab Engineering Bureau (Consultant/Engineer)

• MEDGULF- Main Contractor

• AAC - Arabian MEP Contracting (MEP Contractor)

• MS - Method Statement

• QCP - Quality Control Procedures

• HSE - Health, Safety and Environment

• ITP - Inspection and Test Plan

• MSDS - Material Safety Data Sheet

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• PPE - Personal Protective Equipment

• QC - Quality Control

• QCS - Qatar Construction Specification 2010

• RA - Risk Assessment

5. RESPONSIBILITIES/ SUPERVISION:-

5.1 Project Manager

• Project Manager shall be responsible for overall management of all construction activities at

site.

5.2 Project Engineer / Site Engineer

• Project Engineer / Site Engineer shall be responsible for safe execution of the complete

activity including, but not limited to:

a) Confirming the installation locations from schedule of approved construction drawings. b) Organizing tools and equipment required to the work site. c) Assigning work crew. d) Responsible to handle and ensure the works are carried out in such a way that no one’s

security, safety or health is jeopardized.

5.3 QA/QC Engineer

• QA/QC Engineer shall be responsible for:

a) Ensuring that approved work methods and materials are being used and in conformance

with project specifications.

b) Stage inspections are surveillance in accordance with ITP.

c) Review of QA/QC documents

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5.4 Safety Officer / HSE Officer Safety officer / HSE Officer shall be responsible for:

• Provide safety information and guidance to line supervision on proper HSE procedures,

current and potential hazards and employee training requirements.

• Conducts project HSE inspections and reports infractions to the supervisor and the site

manager concerned and subsequently inspects to see that infractions are corrected.

• HSE officer shall give the necessary instruction to the executing team prior to start the work.

• Ensuring Tool Box Talk conducted by supervisor.

6. PROCEDURE / METHOD TO BE EMPLOYED: 6.1 Handling & Storage On receipt of the materials, the materials shall be handled and stored in line with the following

procedure:

• Prior to unloading the Material Arabian MEP Storekeeper shall be check along with QA/QC

Engineer that the material delivered is as per the approved material technical submittal and

Purchase order.

• The materials received at site shall be carefully unloaded using adequate manpower and

equipments if necessary (i.e. Fork lift, Crane.etc.) under close supervision along with Safety

officer such that no damage shall be caused to the materials and injury to personnel.

• Arabian MEP Storekeeper shall be checking the quantities and sizes of Pipes, Fittings &

Accessories received against the delivery documents.

• If necessary, the receiver should make a report with the transporter. If materials got damaged

in various parts are detected, it must be witnessed by a representative of the transporter and

a written report shall be made in this regard.

• Store the materials in a covered or shaded area and as per the manufacturer’s

recommendation.

• Arabian MEP Storekeeper shall provide necessary tagging for easy identification

• Material Inspection request (MIR) shall be submitted to the Consultant (AEB) along with

required documents for approval.

• After approval of the MIR only, AAC Storekeeper can issue the materials to Site for

installation.

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6.2 Preparation

• AAC Site Engineer shall ensure that the relevant shop drawing are approved and issued for

construction and required materials are available at site and civil clearances are available.

6.3 Pre installation check

• Ensure that approved and accepted materials are available to carry out the work.

• Review the IFC and approved Shop drawings for specific areas.

• Review the Co ordinate service drawings for specific areas if applicable.

• Physical verification of the materials shall be carried out for any damages prior to taking from

store

• Prior to Commencement of work, areas and access will be inspected & confirm that Site is

ready.

• All relevant documentation (Drawings) and Material applicable to particular section of works

will be checked by Site Engineer/ Site supervisor prior to commencement of work.

• The Site Engineer/ Site Supervisor will give necessary instructions to tradesmen (Electrician)

and provide necessary approved construction/shop Drawings.

• The Site Supervisor/Foremen will also check that proper tools and equipment are available to

carry out the work and are in compliance with contract specification.

• The Site Supervisor also explains the tradesmen regarding safety precautions to be observed.

• Proper materials including pipes, fittings and associated accessories to be withdrawn from

store according to approved shop drawings and good Engineering practice.

• Testing Instrument should have valid Calibration certificates: Copy of certificates shall be

available on site. 7.0 Installation of UPVC Pipes & Fittings for Drainage services

• Prior to the commencement of work, coordination must be done with other services. All piping

installation to be done as per the approved shop drawing, manufacturer recommendation and

manuals.

• Mechanical anchor fasteners to be installed in concrete with necessary inserts, bolts rods ,nuts

washers and other accessories shall be installed as per standard practices

• Additional support for fittings where change in direction of piping must be provided as per the

project requirements.

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• Approved type uPVC Pipes are brought to the work place manually from store to the work place

with under PMT and HSE supervision

• Shifting of pipes to the required floors and height to be done by the hoist/crane or by manual

handling as possible

• All uPVC piping supporting system installation to be followed as per the manufacturer

recommendation.

• The exact routing of the pipe lines and location shall be marked at site as per approved shop

drawing.

• Cut the pipe to the required length. In case of change in direction, appropriate bends and

fittings shall be used. Remove dirt, scale and debris from inside and outside of the pipes and

fittings before assembly. Ensure proper slope and gradient are maintained for all horizontal

runs of drainage pipes Remove dirt, scale and debris from inside and outside of the pipes and

fittings before assembly.

• Install pipes free of sag and bends on the installed supports, as required in length.

• Clean and dry joining surfaces by wiping with Pipe cleaner and clean cloth or paper towels

• Ensure that the invert level of Floor Drain, Catch Basin, and Floor Trap is inline with the invert

level of pipe as shown in shop drawing.

• All valves will be installed as per the approved shop drawing/ detailed drawings.

• Pipe runs within buildings should not be laid exactly horizontal but to a slight fall to reduce the

risk of air locks forming

• For ø32 mm and ø50 mm pipes are solvent welded joints, and pipes above ø65 mm are push-

fit type joints.

• Solvent welded joints- Apply solvent cement evenly on both surfaces. Insert the pipe into the

socket with slight twisting action up to the socket depth. Ensure that the pipes are cut square

and remove burrs before assembling. The pipe should securely fix into the recess of the fitting

to ensure leakage free joint

• Clean and dry joining surfaces by wiping with Pipe cleaner and clean cloth or paper towels.

Apply pipe lubricant cement evenly over the mating surface of pipe and fittings.

• Insert the pipe into the fittings to full depth.

• Wipe out excess solvent and hold the joint firmly for 2 minutes to dry.

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• Protect the pipe installed during construction period to avoid clogging with debris and to prevent

damage from traffic and construction work.

• Push-fit type joints-Remove factory applied end caps before joining assembly.

• Ensure that the pipes are cut square and remove burrs before assembling.

• Clean and dry joining surfaces by wiping with Pipe cleaner and clean cloth or paper towels

• The gasket shall be as per the approved manufacturer delivery. Elastomeric compression

gasket made to match inside hub of pipe to outside diameter of adjoining pipe.

• Apply pipe lubricant cement evenly over the mating surface of pipe and socket. Insert the pipe

into the fittings to full depth. Apply lubricant evenly on both surfaces. Insert the pipe into the

fittings with slight twisting action up to the fittings depth.

• Wipe out excess lubricant and hold the joint firmly for few minutes to dry

• Before leaving the work space all the open ends of piping, valves, fittings etc will be

temporarily sealed with polythene sheets. Ensure that the work place shall be keep clean and

tidy.

• Mechanical Identification shall comply project specification and approved material submittal

7.1 TESTING (GRAVITY LEAK TEST)-

• Ensure that the pipe installation/routing is acceptable and approved

• Gravity Water test is to be conducted to ensure and prove the tightness of the joints and ensure

there are no leaks in the piping system

• All openings in the piping will be tightly closed by special cast iron pipe plugs or by another

suitable means and the system filled with water to the point of overflow from the highest point.

• The plugs can be temporally opened to make sure that all air has been vented and that water

has reached all parts of the system.

• No section of the pipe shall be tested to less than 1.2mtrs head of water in testing successive

section of piping. The whole system shall have been subjected to a height of not less than 1.2

meter head of water

• The water shall be kept in the system or in the portion under test for at least 30 minutes before inspection starts. While the system is under pressure, a careful inspection shall be

made on all pipes and joints. If any leaks in joint found or evidence of defective pipe or fittings

are revealed, the defective pipe/fitting should be immediately replaced with new joints and

materials.

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• Check the system for any leakage, if there is any leakage rectify the joint and re-start the

testing procedure again.

• Testing will be inspected by Consultant representative for their satisfaction and document for

correct test will be maintained by getting approval in test certificate by Consultant

representative signature.

• After the correction is made the gravity test pressure will be maintained for a period of 2 hours

and witnessed by the Consultant representative for their satisfaction.

• After test, release the water from the pipes and properly seal the pipes to prevent any debris

going inside.

8.0 INSTALLATION PROCEDURE FOR WATER SUPPLY PPR PIPES & FITTINGS Mark the pipe layout as per the approved shop drawing.

Support to be fixed using wedge anchor, anchor bolts, threaded rod and clamps as per project

specification and approved material submittal.

Cut the pipe to the required length by using pipe cutter and make sure that a straight and clean

pipe end results.

Align the pipe before joining together.

Join the pipe using Manufacturer welding device and tools.

Pipe ends must have properly finished square end, pipe surfaces to be joined must properly

clean to remove contaminants and foreign materials.

The pipes and fittings should be clamped during welding to eliminate relative movement.

Mark the welding depth with a pencil or marker pen and measurement plate which is to be

provided by manufacturer welding kit.

Enter the end of the pipe in to the tool up to the marked depth without twisting it and

simultaneously without twisting, push the fitting on the heating tool, observing the general

guideline for heating up to time as per manufacturer recommendations.

Timing for heating should not start until the pipe and fitting reaches to the marked welding

depth. Both fitting and pipe should be heated for a set time known as per manufacturer’s

recommendation. When heating time is completed, the pipe and fitting should be removed from

the heating tool and pressed together to the marked welding depth for a few second without

twisting a homogeneous structure of the same material is there upon formed.

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After finishing the welding process and the devices has been switched off, wait until it has been

cooled down before restoring it away.

This process repeated throughout the network of pipe and fittings at the site and combined with

other units until closed efficient water delivery system is formed.

Install the valves and fittings as per the shop drawing.

Pressure test shall be done upon completion of the one complete system in a specified area.

In the course of installation, all pipe work and fitting shall be protected all open ends of pipes

shall be temporarily plugged to prevent any foreign materials to enter in the system and to

prevent dirt accumulation.

Clearance between exposed pipes and the finished surface or wall shall be maintained.

Sleeves shall be provided on all pipes that pass through the walls as per project specification.

All pipe work will be adequately supported as to permit free movements to expansion,

contraction, vibration or other changes.

All exposed pipe hangers, rods and fittings without factory finish, shall be primed and painted

as per the project specification.

Ensure that the work place shall be keep clean and tidy.

8.1 TESTING PROCEDURE Ensure joints are complete in the entire section of piping to be tested. Connect the manifolds with air vents at both ends, install calibrated pressure gauges and air

vent. Connect pump to the manifold for pumping water. Fill the pipe with water through manifold, keep vents open. Once water is filled, close the vents and start pumping. Pressure to be raised till 1.5 times of work pressure. If any water leak is observed, release the water from the piping and make proper joints in the

fittings or as required.

• After successfully completed the test & witness by the consultant, the test pressure shall be

released slowly in order to avoid the sudden contraction and shock.

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9.0 CHILLED WATER PIPES & FITTINGS INSTALLATIONS Approved type chilled water pipes and fittings are to be brought to the work place manually or

mechanically from store with under PMT and HSE supervision.

Shifting of pipes to the required floors and height to be done by the hoist/crane or by manual

handling as possible.

Prior to the commencement of work, coordination must be done with other services. All piping

installation to be done as per the approved shop drawing, manufacturer recommendation and

manuals.

With reference to the approved floor plan shop drawings and the coordination drawings, all

routes shall be carefully marked at the bottom of the slab/wall/ as applicable by foreman using

a marker and chalk powder and shall be reconfirmed the routes with related MEP services.

Install the pipe sections at height as per approved drawing in a neat and tidy manner

Dielectric joints shall be installed between copper and steel pipes.

Flanges shall be provided on the pipe work systems wherever necessary to connect to

components, plant or equipment having flanged connection.

Check and ensure proper and sufficient clearance around pipe for applying insulation/cladding

as possible.

Fix the blind plugs/temporary valves on all drain, air vent, pressure gauge, and thermometer

and test point tapings as per approved drawings.

Drain points at the lower points and air vents at higher points shall be provided.

Install the piping connections with valves and accessories where ever equipments are installed

as per approved drawings.

Valves, strainers accessories, shall be fixed as per the approved

Protect and cover the end point of installed pipes during construction period to avoid clogging

with debris and to prevent damage from traffic and construction work.

Prepare the pipe ends according to the type of joints i.e. threaded joints, welded joints/welded

fittings.

Threaded joints Threading as applicable shall be done as per fittings/couplings of manufacturer

recommendations.

Threading of the pipes to be carried out by means of threading machine Pipe size 50mm dia

and below will be threaded joints connections.

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Threading machine will be utilized at required site.

Ensure alignment of pipe to the threading machine before locking by providing pipe stand

support at the opposite end.

Pipe threading works should be done by highly skilled operators.

Teflon tape/jute or other suitable materials shall be providing at the threaded portion of the pipe

prior to fittings connection.

Slowly tighten the pipes and fittings connection using pipe wrenches contrast to each other up

to the desired tightness.

Threaded portion to be covered with jute for proper tightness.

The same point will be follow for all the threaded joints.

Lubrication for the threading machine to be monitored continuously.

The valves, cocks, and strainers will be used wherever applicable as per the approved

drawings & contract specification.

welded joints Pipes shall be cleaned internally.

The pipe to be welded is cut to required measurements.

Pipes are installed in position by using proper chain roller/crane/manually.

The pipe and fittings are installed as per approved shop drawings.

To ensure that welding metal or flux will not project into bore of the pipe.

Ensure that wherever piping welding connection to the equipment, valves o other units, the

connecting joints will be used by means of unions or flanges for easy removal of servicing and

maintenance.

Ensure that the welding rods will be kept in operating temperature.

Ensure flux coating on the welding is chiseled off.

Before leaving the work space all the open ends of piping, valves, fittings etc. will be

temporarily sealed with polythene sheets. Ensure that the work place shall be kept clean and

tidy.

Ensure that all joint insulation shall be carried out after hydro pressure testing.

9.1 TESTING (HYDROSTATIC PRESSURE TEST)

• Training – all personnel will be completely trained to carry out the testing activity and method

statement briefing to be done.

• Signage – all necessary safety warning/signage shall be displayed at the location of the works.

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• Test preparation – only, after satisfactory visual inspection have been completed; hydrostatic

pressure testing shall be carried out on the installations, test for leaks and defects in new

piping, joints and parts of existing piping that have been altered, extended or repaired. Altered,

extended or repaired pipes shall not be concealed until it is tested and approved.

• Ensure that location/area is ready for testing

• Ensure that calibrated gauges are being used and test certificates are available.

• Ensure that Project HSE plan and formats are followed and required permits shall be obtained

prior to the testing activity starts.

• Notify consultant/engineer at least 24 hrs. before inspection date to be made.

• Ensure that all the pipes with valves package are tested for their specified pressure ratings.

Subject the piping to static water pressure 1.5 the working pressure without exceeding pressure

rating of piping system materials and pipe fittings and valve accessories.

• Make sure that a minimum of 2 number identical calibrated pressure gauges shall be installed

at extremities of the piping circuit to be tested.

• Test steps – water shall be filled slowly and applied the pressure by utilizing hand pressure

pump with pressure gauge duly calibrated. Water shall be filled/pumped from low level to high

level so that all the air inside the pipe would be removed and make sure that all entrapped air

has been removed before applying required pressure.

• Pressure shall be applied gradually to reach 1.5 x the working pressure of the piping system.

Make sure that cap and subject the piping to static water pressure 1.5 x the working pressure

without exceeding pressure rating of piping system materials to avoid damages and accidents.

• The test pressure shall be conducted and monitored. Isolate test source and stand the pressure

for 24 hrs. All pipes and joints shall be carefully inspected. Check the system for any leakage

and if any leakage in joints or evidence of defective pipe is observed, the same shall be

rectified/replaced. The pressure test shall be repeated after the rectification is carried out.

• Upon confirmation of ‘NO’ leaks for period not less than 24 hours, invite consultant/client

representatives for witnessing and signing off the leak test.

• After successfully completed the test & witness by the consultant, the test pressure shall be


• After release of water; properly seal the pipes to prevent any debris going inside.

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10.0 INSTALLATION OF FIRE FIGHTING PIPES, FITTINGS & ACCESSORIES:

o With reference to the approved floor plan shop drawings and the co-ordination drawings, all

routes shall be carefully marked at the bottom of the slab/wall/ as applicable by Foreman using

a marker and chalk powder and shall be reconfirmed the routes with related MEP services.

o Anchor fasteners shall be installed for support as per the approved support distances for

different pipe sizes.

o All supporting of pipes shall be done as per recommended spacing both horizontally and

vertically.

o Cut the pipes square to required length and ream the pipes to remove burrs and clean

thoroughly before installation.

o The pipe ends shall be joined according to the type of joints i.e. Threaded joints/ grooved

coupling/ flanged etc. Pipe ends shall be prepared as per type of joint to be used. The groove

shall be prepared and installed as per coupling manufacturer's instruction & grooving

equipment supplier.

o The Pipes shall be tightened with pipe wrench to the required tightening torque.

o Pipe work shall be installed at height as shown on approved shop drawings, in a neat and tidy

manner.

o Hole saw cutter shall be used to cut holes in the pipe work wherever required for fixing

mechanical Tees etc.

o Sleeves of suitable sizes shall be provided at wall crossings and wherever required.

o All vertical pipes shall be installed, plumbed with sufficient clearance from the wall / surface.

o Pipe fittings shall be installed as per approved shop drawing as applicable wherever it is

required. All fittings shall be installed at locations where easy accessibility will be available. Install valves, supervisory Switches, flow switches, pressure gauges etc. as per approved shop

drawings and manufacturer’s Instruction.

o Approved Paint shall be applied to give a smooth and even finish.

o Open ends of the pipes shall be protected by using temporary plug/ cap/ as applicable to

ensure the foreign matter is not allowed to enter installed pipe work.

o Provide identification and flow directional arrows to the pipe work, valves and other

components

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10.1 HYDROSTATIC PRESSURE TEST:

• All pipes shall be tested hydrostatically in sections by plugging the ends with end plug.

• Water shall be filled slowly and applied the pressure by utilizing hand pressure pump with

pressure gauge duly calibrated and make sure that all entrapped air has been removed before

applying required pressure.

• Water shall be filled / pumped from low level to high level so that all the air inside the pipe

would be removed.

• Pressure shall be applied gradually to reach 1.5times the working pressure of the system and

Piping Systems shall be tested hydrostatically.

• The test pressure shall be conducted, monitored the pressure drop. All pipes and joints shall be

carefully inspected and if any leakage in joints or evidence of defective pipe is observed, the

same shall be rectified. The pressure test shall be repeated after the rectification is carried out.

• After successfully completed the test & witnessed by consultant, the test pressure shall be


11.0 TRAINING:- All personnel will be competently trained to carry out the operations they are undertaking by

Toolbox Talks (TBT). All operatives will receive a site induction into method statements,

safety, quality and environment briefing prior to commencing works.

12.0 WORKING HOURS:-

Statutory Regulations will be strictly followed in summer for the working hours.

13.0 HOUSE KEEPING:-

At the end of days’ work, site supervisor shall ensure that the working area is kept clean by

disposing the waste material at designated area.

14.0 PLANT & EQUIPMENT REQUIREMENT:-

• Pipe Cutter.

• Plumber’s hand tools

• Files (Flat/Round) & Emery sheets

• Measuring Tape

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• Drilling Machine

• Threading & Grooving Machine

• Welding machine.

• Work Benches.

• Grinding machine

• Hole saw cutter.

• Scaffolding/Ladder

• PPE

• Equipment to be used for welding(Face shield, Fire Apron, Fire Extinguishers & Fire Blanket )

15. SUPPORTING DOCUMENTATION:- This MS to be read in conjunction with the below referenced documents

• Contract Specification

• QCS 2010

• Approved drawings.

16. DOCUMENDATION:-

• Material Inspection Request (MIR)

• Work Inspection Request (IR)

17. ATTACHMENT:-

• Risk Assessment

• Inspection & Test Plan (ITP)

• Installation Check List

• Test reports

F/HS 024/Rev. 0/Dated 12/8/14 - 1 - | P a g e 1 1

Ref: RA/PMT/HVAC- 001

ARABIAN MEP CONTRACTING W.L.L.

AP = Air Pollution LP = Land Pollution WP = Water Pollution RD = Resource Depletion HI = Health Impact GI = Global Impact CW = Controlled Waste

Rev. 0

TASK RISK ASSESSMENT (TRA) / ENVIRONMENTAL IMPACT ASSESSMENT (EIA) FORMAT

Task: Installation of Mechanical pipes, fittings & accessories Assessed by: (Name) Signature: Assessed Date:

Activity Hazards Effects Legal

Severity

Probability Risk Minimize Risk by

( Risk Reduction Measures)

Residual Risk Legal Severi

ty Probability Risk

1. Mobilization of materials and equipments to site

Vehicle breakdown Improper stacking/fall of load Temporary accesses / Diversions Collusion with fixed obects or pedestrain Overturning of plant Failure lifting devices Unauthorized operation

Injury to personnel Damage to property Vehicle accident

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4

1

8 • Tool Box Talk must be conducted relevant to

activity • A competent banks man wearing fluorescent jacket

must be deployed. • Use appropriate capacity vehicle as per the load to

be transported. • Ensure vehicle condition is good/proper

maintenance. • Drive observing all traffic rules, speed limits, road

signs. • Proper parking and surveillance to drivers. • Reversing Horn /Alarm must be in place and in

working order. • Banks man is to be assigned while driving inside

site. • Materials to be securely stacked in vehicles with

rope, strap etc.

• Care must be taken while offloading materials.

• Competency of operators/ riggers

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Severity




ty Probability Risk

• Fitness certificate of plant

• Third party certification of lifting accessories

2. Manual material handling <25 kg Handling of pipes/supports /tools etc

Heavy objects Sharp edged objects Incorrect posture

Injury to personnel/ back injury/sprain

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2

2

4 • The materials received at site shall be carefully

unloaded using adequate manpower and equipments if necessary (i.e. Fork lift, Crane.etc.) under close supervision along with Safety officer such that no damage shall be caused to the materials and injury to personnel

• Prior to commencement of work/carrying the pipes/materials to the work location - access should be inspected and ensure that the way of traveling is free of obstructions/blockage.

• Where ever possible use mechanical devices instead of manual handling.

• When planning the activity, consideration will be given to use of handling aids where possible.

• Examine size/weight of object before lifting.

• Observe correct techniques and posture for lifting (ergonomical factors).

• Seek assistance whenever required/team lifting

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Severity




ty Probability Risk

• Conduct Tool Box Talk.

• Use PPEs including appropriate gloves.

3. Working at height: Scaffolding

Personnel falling from height.

Injury to personnel Damage to property

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4

2

8 • Barricade the area and post signs to control

movement and working of other people during erection of scaffold and while using the scaffolding

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Rev. 0



Severity




ty Probability Risk

Tools and materials falling from height /personnel working at lower level Unprotected edges Unstable or poorly maintained access Deterioration of materials

• provide necessary signage’s to prevent trespassing

• Incomplete scaffolds must be identified and red tagged.

• Scaffolding must be inspected and tagged by certified scaffolding supervisor.

• Full body harness must be used and anchored properly, where required.

• Proper access and egress must be maintained always.

• Access must be maintained free of materials.

• No alteration to the scaffold be made after green tagging, if any alteration, must be re-inspected

• Conduct Tool Box Talk. • Use PPEs including appropriate gloves

4. Use of ladder Portable ladder Step ladder (‘A’ frame)

Personnel falling Tools and materials falling


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2 • Ladder must be used for access and/or short

duration light duty work

• Ladders must be checked for defects, length and type before use.

• Ladders should be secured against slipping at

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Contact with live overheads The Ladder toppling sideways

bottom and lashed at top.

• Always use two hands (hands must be free) when climbing. Three point contact to be ensured

• Place the ladder at base to height ratio 1:4

• Only one person shall stand at a time on the ladder.

• Ladder should extend at least 1 metre above landing platform

• Step ladder must be used with sections fully open

• Do not stand on top three steps.

• One person to hold the ladder while other is using the ladder

• Do not overreach from the ladder

• Do not use metal ladder for electrical work


• Donot carry load while using ladder 5. Use of portable electric tools (Drilling

*Electric shock *Electrocution *Missing guards


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8 • Prior to the use of electrical equipments/tools, the

physical conduction of the machine should be properly checked and report for any defects.

• Ensure adequate guarding of machine/tool is in

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Machine/ Grinding machine / Threading machine etc).

Fire /Explosion Exposure to fumes Ergonomics Hazard Vibration Noise

place.

• Only skilled/ trained personnel must use hand-held grinders, drill machine and threading machine.

• Ensure pre-use check of integrity of grinding disc for defects/cracks, cable.

• Grinding disc must be firmly fixed to grinder and not be used above its rated speed/rpm.

• Dead man’s switch must be provided to grinding/drilling tool

• Disconnect electrical cable and power supply when changing the discs/drilling bit and also when not in use.

• Relevant Work Permit shall be obtained

• Ensure correct body position and posture while grinding/drilling.

• Proper and adequate fire extinguishers must be provided.

• Proper access and escape route must be provided.


• PPEs including safety glass and face-shield





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combination shall be worn as FACE protection while grinding.

• Inspection and supervision use of abrasive wheels 6. Welding

*Electric Shock *Fire Hazard (heat & burns) *Radiation & Fumes


Health hazards

Arc eye

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8 • Proper cable with earth clamp must be used for the

return path of the welding machine

• Except the electrode holding jaw, the remaining part of the welding holder should be fully insulated.

• Welder in wet condition should not be allowed to weld.

• Welding machine & the cables should not be kept in wet places.

• Welding m/c and cables should be checked before starting the job.

• Welding m/c body earthing must be given.

• Use appropriate gloves /shoes.

• PTW system shall be strictly followed and tool box talk shall be conducted.

• All the combustible materials should be cleaned off from the welding area.

• Fire fighting arrangement such as fire extinguisher

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,fire blanket etc must be availed at the work location

• Welding machine should be switched off when the welder wants to leave the work place even for a short while.

• While welding in the multistoried structures, the welding sparks should be constrained to the floor in which welding is done, using suitable fire blanket.

• At the end of job, before leaving the place of work, smoldering fires if any should be put out.

• Overheating of transformers shall not be allowed.

• All cable joints should be very rigidly made properly and insulated to avoid cables getting heated up or producing sparks causing fires.

• Suitable fire extinguishers should be provided near the workplace.

• For reducing the effect of radiant heat and hot flux suitable fire resistant apron, sleeves, leg guards, glove etc. should be used.

• Welder should use scratch proof goggles always to avoid getting burns while chipping, cleaning etc.

• Welder coverall should be full sleeve cotton. And





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use of abron

• Welding machine shall be located away from flammable sources/areas.

• Use proper eye protecting shield, welding helmet of appropriate etc.

• Provide proper ventilation to avoid inhalation of fumes.

• Use appropriate respirator wherever ventilation is not effective. -

• Avoid exposure of direct skin to the radiation.

• Competency of welder

• Fire watcher

• Signage

• Its mention only in arc welding machine 7. Application of Insulation adhesive & sealants.

Exposure to hazardous- substance Fire Hazard. Health hazards: skin


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• Material Safety Data Sheet (MSDS) must be in place prior to the start of work. Shall be explained to task team. Display of MSDS in work place.

• Ensure COSHH assessment and in the use of appropriate PPEs /as per manufactures recommendation

• Material must be kept and handled in safe

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allergy

manner as per MSDS. • Only skilled personnel must allow working with

chemicals. • Ensure no hot works are at same place /time

and place fire extinguisher. • Material must be keep in ventilated area • Follow exposure limit of chemical as per

manufactures recommendation 8. Hydrostatic testing Equipments

1. Pressure gauge

2. Hydraulic pressure pump.

Exposure to high pressure water Exposure to electricity Discharge of water in work area(Environmental) Damage to equipments/ accessories

Serious Physical

Injury (fatality)

Electrocution

Water in work area

affecting the people

and materials

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8 • The system should be checked and tested in

accordance with the checklist in relevant method statement.

• Ensure that all the person who will attend the testing and commissioning are competent enough.

• Hydrostatic testing equipment should be calibrated and display certification

• Conduct toolbox talk before starting the activity.

• All inline instruments shall be removed during testing, temporary blinds will be installed where necessary.

• Prior to applying pressure in to the system, all piping installations shall be checked for tightness.

• Testing areas should be cordoned off / isolated.

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• Provide water resistant covers on all live electrical lines which ever directly exposed to the hydro testing area.

• Warning signs ‘Hydrostatic Testing in progresses must be posted for additional awareness to other people at the site.

• Before doing pressure testing each valve in the pipe system should be checked by closing and opening to ensure it is working efficiently.

• Pressurizing the system shall be carried out incrementally.

• Only competent person is allowed to do hydro testing.

• Ensure monitoring by site supervisor and safety person

• Ensure that all operatives have complete PPE’s, prior to start activity.

• Barricade shall be ensured, area should be cleared, and good housekeeping must be maintained.

• The water used for testing shall be drained or disposed off safely.





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9. Water filling / Leak test Hand pumps, Gauges, hoses & Hand tool

Failure of hoses and connectors


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4 • Area should be barricaded & warning signs must be

posted, as appropriate. For controlling of critical activity and make the people responsible.

• Hand pump and tools must be inspected prior to use.

• Supervisor shall be Check water hose connections / air lines for integrity prior to commencement of work

• Appropriate PPEs to be used.

• All electrics must be protected from getting wet or drenched

• Ensure monitoring by site supervisor and safety person.

The water used for filling shall be drained or disposed of safely. Contaminated water should be drained in site it self - connecting to site drainage system or it should be transported out.

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Project Logo Project Name :

Project No. :Client Consultant Contractor MEP Contractor

gr

Verifying Party (Legend): Verification Codes :SC = Subcontractor H = Hold Point - Mandatory - work cannot proceed until inspection activity has been signed-off by relevant party. ITP Ref. No : MC = Main Contractor W = Witness Point - Veryfying Party to witness. Evidence of witness shall be by signature of relevant Inspection Report.CT = Consultant R = Review - Inspection and Test documentation to be presented to Consultant or PM for review. Date Prepared : PM = Client or PM S = Surveillance - Monitoring of work activities, NO report required.

4.2 Installation of Valves & Accessories,Air Vent.etc

Approved method statement, Approved shop drawing & project specification After installation Approved method statement ,approved

shop drawing & project specification Work inspection request & Installation checklist H

After installation Approved method statement & project specification

Work inspection request & Pressure test form

Installation of Water Supply PPR Pipes, Fittings & Accessories4

4.1 Installation of PPR pipes & fittings Approved Method statement, approved shop drawing, /Coordinated services drawing & project specification. After installation

Approved Method statement, approved shop drawing, /Coordinated services drawing & project specification.

Work inspection request & Installation checklist H H W

H H W

H W

Approved method statement, Approved shop drawing & project specification After installation Approved method statement ,approved

shop drawing & project specification Work inspection request & Installation checklist H H W

3.3 Hydro pressure test Approved method statement & project specification After installation Approved method statement & project specification

Work inspection request & Pressure test form H H W

4.3 Hydro pressure test Approved method statement & project specification

3.1 Installation of fire fighting pipes & fittings Approved Method statement, approved shop drawing, /Coordinated services drawing & project specification. After installation



Installation of Fire Fighting Pipes, Fittings & Accessories3

3.2

Installation of Valves & Accessories,Sprinkler, Alarm Check Valvs,Fire Hose cabinet, Fire Hose Reel & Fire Extinguisher.etc

2.1 Approved drawings to be used Approved shop drawing During installation Approved shop drawing Not Applicable H H S2 Drawings

1.1Check all the delivery materials,proper storage & inspection of materials are as per approved material submittal

Approved material submittal & project specification After recieving Approved material submittal & project specification Material Inspection Request H H W

1 Material:

15-Feb-15

Item No.

Activity Description Reference Documents Frequency / Characteristics to be Verified Acceptance Criteria / Standard Requirements

Verifying Documents Verifying Party(Specs/Procedures/Dwgs) SC MC CT PM

neering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab engineering bureau arab en

161-ITP-MECH -PL-001 Rev. 0

LULU HYPERMARKET IN AL MESSILA, DOHA INSPECTION AND TEST PLAN (ITP)977

1.INSTALLATION OF DRAINAGE/WATER SUPPLY/CHILLED WATER/FIRE FIGHTING PIPES, FITTINGS & ACCESSORIES

Item No.

Activity Description Reference Documents Frequency / Characteristics to be Verified Acceptance Criteria / Standard Requirements

Verifying Documents Verifying Party(Specs/Procedures/Dwgs) SC MC CT PM

Name : Name :

Signature : Date : Signature : Date :

6.3 Check the insulation are done properly Approved method statement, approved shop drawing & project specification. After Installation Approved method statement, approved

shop drawing & project specification. Work inspection request & Installation checklist H H W

6.2Check the installation of valves & accessories are installed as per the approved shop drawing.

Approved method statement & project specification After installation Approved method statement & project specification

Work inspection request & Pressure test form H H W

6.1 Inspect the installation of chilled water pipes and fittings.

Approved Method statement, approved shop drawing, /Coordinated services drawing & project specification. After installation



Installation of Chilled Water System Pipes, Fittings & Accessories6

5.3 Gravity testing of drainage pipes Approved method statement & project specification After installation Approved method statement & project specification

Work inspection request & Gravity test form H H W

5.2All pipes are laid and leveled properly.Pipe joints are made properly and tight & secure.

Approved method statement &Approved shop drawing After installation Approved method statement ,approved

shop drawing & project specification Work inspection request & Installation checklist

Approved Method statement, approved shop drawing, /Coordinated services drawing & project specification. After installation


Work inspection request & Installation checklist

H H W

H H W

Installation of Drainage system UPVC Pipes, Fittings & Accessories

6.2 Hydro static pressure test Approved method statement, approved shop drawing & project specification. After Installation Approved method statement, approved

shop drawing & project specification. Work inspection request & Pressure test form H

5.1 Installation of UPVC pipes & fittings

H W

Prepared by (Contractor) :

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Project Logo

Project Name : LULU HYPERMARKET IN AL MESSILA, DOHA Location: AL MESSILA, DOHA Project No. : 977 TITLE : CHECK LIST FOR INSTALLATION OF FIRE FIGHTING PIPES, FITTING & ACCESSORIES Client Consultant Contractor MEP Contractor

S.No. Description Yes No Remarks

1. Check materials are as per approved material submittal.

2. Ensure the type, Size and routing of fire fighting pipes.

3. Check hangers and supports are provided at specified intervals and as per the approved drawings.

4. Check the joints & flanges are correctly made, joint and sealed with approved method and as per Manufacturer’s recommendation.

5. Check the Installation is Co ordinates with other services..

6. Check the Valves, gauges & strainers etc. are installed as per approved drawing.

7. Check the sleeves are installed at wall crossing.

8. Ensure adequate space is available for maintenance and removal of valves, gauges, strainers etc. as applicable.

9. Check identification, valve tags, flow direction are provided as per specification.

10.

11.

Comments: ARABIAN MEP(Submitted By)

AEB (Approved By) ENGINEER QA/QC

Signature

Name

Date

Project Logo

Project Name : LULU HYPERMARKET IN AL MESSILA, DOHA Location: AL MESSILA, DOHA Project No. : 977 TITLE : CHECK LIST FOR INSTALLATION OF PPR PIPES, FITTING & ACCESSORIES Client Consultant Contractor MEP Contractor


1. Check the materials are as per approved material submittal.

2. Ensure the type; Size and routing of pipes are as per the approved drawings.


4. Check the joints & flanges are correctly made, joint and sealed with approved method and as per Manufacturer’s recommendation.

5. Check the Installation is Co-ordinates with other services.

6. Check the Valves, gauges & water hammer arrestor etc. are installed as per approved drawing.


8. Ensure adequate space is available for maintenance and removal of valves, gauges, etc. as applicable.


10. Check that the installation is free from any mechanical damages.

11.



Signature

Name

Date

Project Logo

Project Name : LULU HYPERMARKET IN AL MESSILA, DOHA Location: AL MESSILA, DOHA Project No. : 977 TITLE : CHECK LIST FOR INSTALLATION OF UPVC PIPES, FITTING & ACCESSORIES Client Consultant Contractor MEP Contractor


1. Check the sizes of drainage pipe & fittings are as per the approved material submittal and drawing.

2. Ensure the routing of pipes are as per the approved drawings.


4. Check the pipe joints are correctly made, joint and sealed with approved method and as per Manufacturer’s recommendation.


6. Check if necessary plug installed.




10. Check that the piping are laid and leveled properly.

11. Gravity test is conducted.



Signature

Name

Date

Project Logo

Project Name : LULU HYPERMARKET IN AL MESSILA, DOHA Location: AL MESSILA, DOHA Project No. : 977 TITLE : CHECK LIST FOR INSTALLATION OF PIPES, FITTING & ACCESSORIES FOR CHILLED WATER SYSTEM Client Consultant Contractor MEP Contractor


1. Check the materials are as per approved material submittal.

2. Ensure the type; Size and routing of pipes are as per the approved drawings.


4.

Check the joints & flanges are correctly made, joint and sealed or welded with approved method and as per Manufacturer’s recommendation.


6. Check the Valves, gauges, flexible connector & Strainers etc. are installed as per approved drawing.




10. Check that the installation is free from any mechanical damages.

11. Check all insulation joints are sealed properly



Signature

Name

Date

Project Logo

Project Name : LULU HYPERMARKET IN AL MESSILA, DOHA Location: AL MESSILA, DOHA Project No. : 977 TITLE : PRESSURE TEST FORM Client Consultant Contractor MEP Contractor

PROJECT NAME: LULU HYPERMARKET IN AL MESSILA

SYSTEM : DATE OF TEST :

TYPE OF TEST : HYDRO TEST WORKING PRESSURE ________bar

TEST MEDIUM / TEMP :______ REQUIRED TEST PRESSURE: _______bar

TEST STARTING TIME:______ TEST ENDING TIME:______

PRESURE HOLDING TIME :____24___hrs

PRESSURE GAUGE SERIAL NO.:

RESULT : ACCEPT ______________ REJECT ______________

REMARK :

SUBMITTED BY APPROVED BY

ARABIAN MEP AEB

Signature

Name

Date

Method Statement for Mechanical Piping

Documents

Transcript of Method Statement for Mechanical Piping