METHOD STATEMENT FOR INSTALLATION & TESTING OF PLUMBING FIXTURES, SANITARY WARES & ACCESSORIES

CONTENTS

1. 1.0 PURPOSE
2. 2.0 SCOPE
3. 3.0 REFERENCES
4. 4.0 DEFINITIONS
5. 5.0 RESPONSIBILITIES
6. 6.0 EQUIPMENTS
7. 7.0 PROCEDURE
8. 8.0 ATTACHMENTS

 

 

 

1.0 PURPOSE

• This method statement is applicable for Supply & Installation of Plumbing Fixtures, Sanitary Wares & Accessories for the project as mentioned in the Approved Shop Drawings for Drainage System.

2.0 SCOPE

• Supply & Installation of Plumbing Fixtures, Sanitary Wares & Accessories in line with project requirements as indicated in the Approved Shop Drawings for Drainage System.

3.0 REFERENCE

      3.1  Latest Approved shop drawings for the required and applicable areas for  Drainage.

            3.2  Specifications

• Project Quality Plan
  • Project HSE Plan
  • Material Approval Request for Sanitary Wares       

4.0 DEFINITIONS

• Main Contractor           :
• MEP Contractor            :
• PQP                             : Project Quality Plan
• PSP                              : Project Safety Plan
• QCP                             : Quality Control Procedure
• HSE                             : Health, Safety and Environment
• MS                               : Method Statement
• ITP                               : Inspection Test Plan
• QA/QC                         : Quality Assurance / Quality Control Engineer.
• WIR                             : Inspection and Test Request
• MIR                             : Material Verification Request
• MAR                            : Material Approval Request
• UPVC Class E              : Ultra polyvinyl chloride
• UPVC                          : Ultra polyvinyl chloride
• HDPE                           : High density polyethylene

                                                                        5.0 RESPONSIBILITIES:

            5.1 Project Manager

5.2 Construction Manager

5.3 Site Engineer

5.4 QA/QC Engineer (MEP):

5.6 Safety Officer

            5.7 Store Keeper (SK)

6.0  EQUIPMENTS

Following tools shall be arranged before starting the job.

 

7.0   PROCEDURE

 

Ø  Work Sequence/Procedure

•   General Requirements
• All the materials received at site shall be as per the approved technical material submittal for Sanitary Wares & to be inspected upon receipt & approved by the engineer prior in proceeding with the installation through MIR. Any discrepancies, damages etc, should be reported to the supplier for rectification or replacement & to be removed from site immediately.
• All construction/inspection/testing works shall be carried out in accordance with specifications & to be done by qualified Mechanical Engineers and shall be checked and approved by MEP Subcontractor Construction Manager along with QA/QC Engineer.
• Contractor has to clarify the procedure for material delivery to the site through consultant Engineer at site.

            7.2        Material Transport/ Delivery

• During transportation ensure that the materials are in a box or at least covered with plastic. Do not drop the materials especially on hard surfaces. This is particularly important as the materials might be broken or some paint damages will occur.
• Where ever possible the loading and offloading of the drains shall be carried out by hand.
• When required or necessary, forklift shall be used in unloading the materials.

7.3       Storage on site

• Sanitary Wares & Plumbing Fixtures should be stored on a flat dry level surface free from liquids & pointed or sharp objects likely to cause rusting & scratches. Timber supports is much likely recommended to support the materials or shall be stored on a higher elevation.
• Materials which are outside the box shall be covered with plastic or canvas to avoid any exposure to sunlight which will cause deterioration of paint or color of the fixtures.

            7.4 Sequence of Installation for Plumbing Fixtures, Sanitary Wares & Accessories

7.4.1 Safety

• All site safety rules & regulations shall be complied with.
• Supervisors will deliver tool box talks, relevant to this installation, to all operatives involved in the installation, and shall be recorded.
• All operatives will be equipped with minimum personnel protective equipment; hard hat, coveralls, safety boots, safety glasses.
• The persons using cleaning fluid and solvent cement or any chemicals shall have to wear hand gloves.
• Ensure all operatives fully understand the method of installing the sanitary wares.

7.4.2 Pre- Installation Procedure

• Before commencement of installation activity, the supervisor must ensure that:
• Permission to start or Civil Clearances prior to installation has been given by the main contractor.
• Materials necessary for the installation have been inspected & approved by the Engineer. 
• All relevant Shop drawings & details for the installation intended for this activity shall be approved by the consultant.
• Necessary openings & stub-outs on the floor/ walls are provided as per the approved builders work drawing.
• Ensure walls, floors and cabinets for suitable conditions where the fixtures & sanitary wares are to be fixed. For any unsatisfactory conditions, do not proceed with the installation.
• Ensure that all supports, piping works have been completed & tested for leaks & approved by the consultant.

7.4.3 General Installation Procedure for Plumbing Fixtures & Sanitary Wares & Accessories:

7.4.3.1 PLUMBING FIXTURES

• Assemble fixtures, trim, fittings and other components as per manufacturer’s manual or instructions
• Install wall hanging fixtures with tubular waste piping attached to supports.
• Install fixtures level & plumb according to manufacturer’s instructions & approved drawings.
• Install counter-mounting fixtures in and attached to casework.
• Connect water supply piping with stop on each supply to each fixture to be connected to water distribution piping.
• Attach supplies to supports within the pipe spaces behind the fixtures.
• Ensure that stops are located where they can be easily accessible for operation.
• If in any case that stops are not available on the fixtures, ball or gate valve are recommended.
• Install faucet spouts fittings with specified flow rates and patterns in faucet spouts.
•  If in any case that faucet spouts are not available with required rates and patterns, adapters are required.
• Install water supply, flow control fittings with specified flow rates in the fixture supplies at stop valves.
• Install faucet, flow control fittings with specified flow rates patterns in faucets spouts.
• If in any case those faucets are not available with the required rates and patterns, adapters are required.
• Provide protective covering for the installed plumbing fixtures & fittings after installation.

7.4.3.2 SANITARY WARES & ACCESSORIES

• Ensure pack between frames and reveal to give joints of specified width.
• Position the packing where fixings tighten frame against structure.
• Install all sanitary wares & accessories with the approved anchoring devices.
• Position components accurately, align & plumb level to its intended location.
• Fix the sanitary wares & accessories as per manufacturer’s recommendations in order to prevent pulling away and other movement during use and ensuring compliance with the design and performance requirements.
• Ensure adequate clearances for opening parts. If necessary, adjust packing and fixing to eliminate binding.
• Do not twist components when driving wedges or tightening fixings.
• Provide screws with inorganic expansion shields for solid walls and toggle bolts or chemical grip bolts for hollow walls.
• Provide stainless steel head screws for exposed locations.
• Provide a rigid, secure, safe and vandal-proof installation for each use.
• Securely fasten accessories, level and plumb in locations, mounting heights as shown in the drawings and as specified.
• Isolate sanitary wares & accessories surfaces to prevent electrolysis due to contact with masonry, concrete or metal surfaces.
• After completion of work, protect & cover all items to prevent from damages.

TESTING & COMMISSIONING PROCEDURE

 

Pre Commissioning Checks

• Make sure that all sanitary wares are installed as per approved shop drawings and installation is already approved by the Company.
• Domestic water supply is available in order to perform the sanitary ware testing and water pumps are in operation to maintain the system pressure.
• Make the adjustment of PRV’s in order to maintain the specified working pressure in the domestic water supply piping system i.e. for kitchen, toilets labs etc.

Testing & Commissioning Requirements

• Sanitary wares shall be tested in accordance with the Estidama requirements and as per approved water calculator for the project.
• Water flow rates shall be measured as per below mentioned baseline requirements of PW-R1 or as per the water calculator if more credit points are targeted.

7.3       Testing & Commissioning

• Flow rates for taps, shower heads, Kitchen Sink faucets, bidets and urinal shall be tested using the stop watch and filling the measuring jug for a fixed time i.e. for one minute or 30 seconds to check that flow rates are as per specification/LEED/Estidama requirements.
• Three readings shall be taken and an average shall be calculated for accuracy of results.
• In case the flow is higher than the required value necessary adjustment shall be made as per supplier recommendations.
• The operation of flush tank shall be checked for full and half flushing cycles. Measurement of water volume is not required because these are already controlled by the size of tank and ball valve. If required by the Company this can also be checked using any suitable arrangement as per site condition.
• Automatic taps if any shall be tested for the sensor operation from a specified distance of hand movement and then shut off after the specified time in addition to the measurement of flow rate.