METHOD STATEMENT FOR Drainage Piping System

CONTENTS

CONTENTS………………………………………………………………………………………………………….

1.0       Scope……………………………………………………………………………………………………. 3

2.0     REFERENCES……………………………………………………………………………………………………………………………………………………………..3

3.0       Responsibilities………………………………………………………………………………… 3

4.0       SEQUENCING………………………………………………………………………………………….. 4

5.0       CONSTRUCTION PROCEDURES……………………………………………………………… 4

6.0       TESTING………………………………………………………………………………………………… 5

7.0      EQUPMENT.……………………………………………………………………………………………………………………………………..5

8.0       Materials……………………………………………………………………………………………. 5

9.0       Environmental Considerations…………………………………………………… 6

10.0    Attachments……………………………………………………………………………………… 6

Attachment 1: Key to Safety Symbols…………………………………………………………………………….. 7

This method statment describe the specfic safe working method which will be use by Orasccom to carry out the Drainig Piping System , it gives details of how the work will be carried out , what health and safty issues and controls are involved.

• 2.    References

• Construction Manager:
  • Assigning tasks of responsibilities to senior site engineers.
  • Monitoring adherence to project schedule.
  • Expeding areas of concern to best achive project schedule.
• Senior Site Engineer :
  • Assigning areas of responsibilities to site engineers.
• Site Engineers :                     
  • Assigning areas of responsibilities to foreman.
  • Continuous montoring of all aspects , and follow activates and co-ordinate with another activities due to any Damage of another works.
  • Inspection of  any installed Drainig pipes and fittings.
  • Liasing  with QC Engineers regarding works progression and availabilty for hold point inspections.
• Mechanical Quality Control Engineers :
  • Ongoing inspection of all aspects of  the installation works.
  • Informaing consultant by works inspection request as and when his presence is required to carry out inspections.
  • Follow the inspected works which approved by the consultant to prevent any damage and reported it by internal site instruction .
• Sequencing.
  • Shop drawings approval.
  • Material approval.
  • Levelling and arrange with another spaces.
  • Installation pipes with its fittings.
  • Testing according the project specifications.

• Construction Procedures
• 5.1 installation preparation:
• Follow the shop drawings to determine the routing, size, dimension, slop and exact location of the draining pipes.
• All Material shall be new and installed in a first class manner.
• All Draining piping unless otherwise indicated or required by code , to be pitched at a minmum rate of  1:100  in direction on flow. Branch connection to stack or main drains shall not made in manner which will permit backflow.
• All vent piping shall br arranged to drain any condensate back to waste piping.
• The open ends of the installed pipes should be closed to prevent entrance of foreign materials in the pipeline.
• 5.2 Jointing of UPVC Pipes and fittings :
• Cutting the pipes should be perpendicular to the pipe axis if pipe sludge are used.
• A chamfer should be performed with suitable tool , in such a way as to avoid damage to gasket during the jointing stage.
• The end of pipes and connection should be clean before the graft joint is made.
• For ease of shank insertion, the part to be jointed with suitable lubrication material.
• Mark depth of entry the tail of pipe into the spigot and align the mark.
• Thoroughly abrade spigot and socket bonding surface using sandpaper.
• Check the position and the condition of the rubber gasket inserted inside.

• 5.3 For underground draining pipe :
• Excavate the trench according to the trench detail shown in the drawings (Width, Depth).
• Put a suitable bedding material layer , bedding to be thoroughly compact in layers not exceeding 150mm to give uniform bed.
• Backfill the trench above the pipe in layer 300mm thick each layer well rammed with the suitable backfilling material according to the project specfication and method of statment .

• Testing
• Back fill along the pipe except above the pipe joints and fitting untill we proceed with the pipe test.
• Test of the pipe according to the project specification section 02530 Division 3.6
• Subject systems to  water pressure test to prove tightness and to flow test to prove freedom from obstruction.
• Close all opening with plugs and fill system to point of overflow at highest opening.
• Vent all air and ensure that water reaches all parts of system to be tested.
• All sections to be tested to not less than 1 m head of water at highest point for at least 30 minutes.
• Inspect all joints and pipes whilst under pressure and correct leaks or detective joints by replacing with new joints and materials .
• Repeat test after corrections are made and untill systems are proven tight.
• Equipment:
• Plumber tool box.
• Welding Device and Tools.
• Personal tools.

• EEPCO UPVC fittings for draining system.

Approved Transmittal No: PKG #75&76 – MT- PL – 00043- Rev. 01

• MISR EL HEGAZ CO.  UPVC pipes for draining systems.

Approved Transmittal No : PKG #75&76 – MT- PL – 00042- Rev. 01

• Considerations

               All as per OCI procedures:

• HSEP 01 – Evaluation of Environmental Aspects
• HSEP 02 – Environmental Programme

Key to Safety Symbols