ms-008 piping works - rev 01

Document No : SPCL-COSS-MS-008Rev. No : 01

PROJECT

College of Social Sciences, College of Law, College of Shari’a, Pray Area & Faculty Club (1) –

Sabah Al Salem University City, Kuwait University

METHOD STATEMENT

FOR

INSTALLATION AND TESTING OF HDPE PIPING WORKS

(BELOW AND ABOVE GRADE)

02 22.06.2015Sr. QA/QC Engineer QA/QC Manager Project Director

Rev DatePrepared by Reviewed by Approved by Approved by

Shapoorji Pallonji and Company Limited SQC

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INDEX

1. INTRODUCTION

2. SCOPE

3. DEFINITIONS

4. REFERENCE DOCUMENT

5. WORK SEQUENCE AND METHODOLOGY

6. MATERIALS RECEIPT, HANDLING & STORAGE

7. EXECUTION

8. RESPONSIBILITIES

9. WORKING HOURS

10. HEALTH AND SAFETY PROVISIONS

11. QA/QC APPROVAL AND OTHER REQUIREMENTS

12. DISTRIBUTION OF METHOD STATEMENT

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1. INTRODUCTION

This Method Statement specifies the installation and testing procedures for Soil, Waste, Vent and Rain water / Storm water drainage pipes & Fittings.

2. SCOPE

The aim of the method statement is to set out the procedures, precautions to observe during unloading, storage, shifting of pipes to desired locations, Installation and Testing Sequence for Above & Below grade HDPE Pipes and Fittings.

All works shall be carried out in accordance to Site Safety rules and regulations as guided by the Engineer, This method statement shall be read in conjunction with the applicable project specification and testing.

3. DEFINITIONS

KUCP - Kuwait University Construction Program (Employer)

SQC - Saleh Al Qallaf Engg. Consultants

SPCL - Shapoorji Pallonji and Company LimitedMS - Method StatementITP - Inspection & Test Plan.

4. REFERENCE DOCUMENTS

Project specifications :Section 15410 - Plumbing Piping

Related specifications :Section 15070 - Expansion CompensationSection 15060 - Supports and HangersSection 15070 - Noise and Vibration IsolationSection 15075 - Mechanical IdentificationSection 15080 - Piping InsulationSection 15400 - Plumbing SystemsSection 15420 - Water Storage TanksSection 15430 - Plumbing SpecialtiesSection 15440 - Plumbing FixturesSection 15450 - Plumbing Equipment

Project drawings : Construction Design DrawingsApproved project quality plan : SPCL/COSS/PQP/002 – Rev. 00Health, safety & environmental Plan : SPK-HSE-PSP-002 – Rev. 00

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5. WORKS SEQUENCE AND METHODOLOGY

5.1 Sequence of the work:

5.1.1 Below Grade:o Marking the layout and routing of pipes.o Excavationo Trench preparation.o Dewatering if necessary.o Leveling, laying and supporting of pipes.o Pipe joining installation.o Inspection for pipe/fitting Installation.o Testing.

5.1.2 Above Grade: (High level)o Scaffolding.o Marking the layout and routing of pipes.o Drilling for supportso Installation of pipes with proper level & alignmento Pipe joining installation.o Inspection for pipe/fitting Installation.o Testing

6. MATERIALS RECEIPT, HANDLING & STORAGE

6.1 Material Receipt:o The materials received at site stores / site shall be checked for manufacture details, as

per delivery note and approved material submittal to ensure delivery is correct.

o Details of the material receipt will be conveyed to the MEP Project Engineer and Quality Engineer.

o Related material information’s will be conveyed to the Engineer and will be integrated with requirements and procedures of the Engineer

6.2 Material Handling:o Use hand gloves for shifting / unloading / loading / handling, etc.

o Unload pipe bundles mechanically, use manual lifting or forklift as per the site facility available. If the pipes arrive at site in loose form, it can be unloaded manually.

o Pipes and fittings shall not be drag or drop. Pipes and pipe fittings shall be handled as per the manufacturer’s instructions.

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o Pipes shall be distributed to the installation site only in such quantities as can be installed in one working day or as allowed by the Engineer.

6.3 Material Storage:o Pipes should be laid on a reasonably flat surface free from large stones or sharp

projection

o All Pipes shall be covered and shall not be exposed to direct sunlight.

o Pipes stacks should not exceed seven layers or 2 meters in height.

o Make sure pipes are stacked in a pyramid manner or make sure the pipes are stacked properly with supports at both sides.

7. EXECUTION

7.1 Preparatory Works

o Check the availability of latest approved working drawing.

o Check whether the area is clear for installation.

o Review the Risk assessment with the current site conditions.o Check the size and class of pipes as per drawing / Material Submittal.

o Check for any physical damage to the pipes and fittings.

o Mark the location of trench preparation for laying pipes.

o Make sure that the pipe or fittings are dry, clean and free from grit for pipe fittings.

7.2 Trench Preparation and Supportso Refer Method Statement for Excavation and Backfilling for Pipes, which will covers all

the activities related to trench preparation, execution, trench supporting, inspection of trench before and after trench preparation etc.

o The trench should not be excavated too far in advance of pipe laying and should be backfilled as soon as possible. Trench widths should be narrow as practicable but not less than pipe OD plus 300mm to enable proper compaction of side fill.

o Future provision for floor drain, Area drain, Trench drain, WC outlets, Oil & Grease Interceptor should be coordinated with steel structure works.

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o The wooden box shall be provided for future provisions with required sizes & location as per the approved drawing before concreting works.

o Preparation of Pipe Supports at specified intervals and designated levels as per approved piping layout shall be completed before Pipe Installations inside the trench.

7.3 HDPE Pipe & Fitting Installationo Cut the pipe to the required length with a pipe cutting tool as per manufacturer

recommendations.

o Make sure that pipes are cut properly to 90°.

o De-burr the edges, clean both end of the pipe and fittings for necessary thermal fusion.

o Position the pipe in the raft foundation at given / required level as per approved construction drawing and verify it with leveling instrument.

o Make sure that pipe & fitting are correctly aligned.

o Pipes are joined together by butt welding & electro fusion welding will be applied wherever required.

o 100% Visual inspection will be carried out for all fusion joints.

o On completion of each pipe section, check and adjust if necessary to ensure the proper level and alignment of pipe then fix proper clamp to maintain its location & level

o After completing the pipe works, compression type rubber plugs with bleeding caps to be installed for drain outlets & one outlet to be extended to 3 mtr height for testing.

o Installation check list to be issued for consultant approval.

7.3 Hydrostatic test:

o Flush the all drainage pipes with clean water to remove all dirt / debris before conducting the hydrostatic test.

o All openings in the piping will be tightly closed by compression type rubber plug with bleeding caps and the system filled with water to the point of overflow from the highest point. The plugs can be temporally opened by using bleeding caps to make sure that all air has been vented and that water has reached all parts of the system.

o The sewer or drain under test should be left with filled water for any physical leak in the system. If any leaks in joints or evidence of defective pipe or fittings are revealed,

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the defective pipe / fitting should be immediately replaced with new joints and approved materials.

o During the water test, strutting precautions should be taken to prevent any movement of the drain or sewer.

o After the correction is made, the test pressure will be maintained for minimum 1 hour and witnessed by QA/QC Engineer.

8. RESPONSIBILITIES

8.1 Site EngineerHe shall be responsible for the complete activity including, but not limited to:

o Work planning and risk assessment at work place.o Coordinate all supervisors, foremen. ensuring that they observe the

requirements pertaining to Safety and Quality for this work.o Manage manpower, equipment and materials for safe and timely completion of

work.o Ensure the quality of work as per the approved shop drawings, specification and

recommendations.o Stage inspection and notification to QC and the Engineer as applicable.o Taking action to closing non conformances reports.o Ensuring that tool box talks are conducted regularly by supervisors.o Ensure that method statement is followed strictly and implemented at site.o To prepare daily progress report and send to planning, area manager and other

related concerns.

8.2 Site Supervisor / Foremano Conducting Tool Box talks to explain the work procedure and maintain safety

guidelines.o Ensure that latest shop drawings are being used at site.o Organizing all necessary material, tools, equipment to the work site and

assigning workman crew prior to commencement of work.o Confirming materials used at site are as per approved Material Submittal.

8.3 QC Engineer / Inspectoro QC Engineer shall be overall responsible for QC activities.o He shall be responsible for the execution techniques and control with respect to

this Method Statement and reference documents.o Witnessing all Checks / Tests.o Maintaining records of calibration, inspection and testing equipment.o Documentation of test records and stage inspection.o Reporting and monitoring of non-conformance status.

8.4 Other Execution Personnel

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o Competent Plumberso Stores Personnel

9. WORKING HOURS

9.1 Working hours shall be normal working hours 0700Hr up to 1800Hrs.

10. HEALTH AND SAFETY PROVISIONS

o Inspect work area & apply safety measures (warning tape, safety barriers and signboard) and ensure availability of first aid box prior to start any activity at site.

o Ensure that all Plumbers / Assistant plumbers use all safety tools. (Safety belt, Goggles, Gloves, Helmets, safety shoes etc.)

o Trained / Experienced labors to be utilized for installation of scaffolding & the same to be checked by safety representative.

o Work site shall be kept clean and tidy & ensure housekeeping on daily basis before leaving job site.

o Extra lighting arrangements to be provided during night shift &dull day light time as additional safety requirement.

o The prescribe PPE should be provide to all workers and Site staff.o Any deep excavation (over 2m) shoring or support shall be provided to avoid any soil

to collapse or slide.o All excavation shall be carried out in plan and in safely manners.o Proper housekeeping should be done.o Site will be cleaned from all the debris, steel waste, nails etc.o During night time sufficient lighting arrangement should be done on site.

11. QA/QC APPROVAL AND OTHER REQUIREMENTS(Pls. refer the ITP: SPCL-COSS-ITP-CV-004 Rev2)

12. DISTRIBUTION OF METHOD STATEMENT

All related parties as stated above, after approval from the Consultant.

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ms-008 piping works - rev 01

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