Installation of Chilled Water Pipes and Accessories:

Installation of Chilled Water Pipes and Accessories:

The chilled water piping installation method is prepared in order to outline the activities and the methods used for installation of chilled water pipes and accessories. All activities will be carried out in accordance with the contract details and in full compliance to the contract specifications and documents. All work within the rights of way of the standards and specifications will be done in compliance with the requirements issued by authorities.

Tools and Equipment's Required for CHW piping works:

Before starting the chilled water piping installation below mentioned tools shall be arranged and necessary measures will be taken for the safety of the equipment. Relevant entities which might require protect include any such works in the vicinity of the area of work or on the service access or discharge path. The construction team will ensure that any such requirements are documented.

01. Welding Machine.
02. Cutting Equipment's (Oxygen, Acetylene Cylinders and Cutting Torch etc.)
03. Threading Machine.
04. Scaffolding.
05. Lifting Arrangement.
06. Tool Box.
07. Measuring Tape.
08. Spirit Level.
09. Plumb Bob.
10. Steel Hammer.
11. Electric Drilling Machine.
12. Hole Saw Cutter.

Storage Pipes and Accessories:

1. All Piping material while unloading shall not be dropped, but slowly lowered to the ground.
2. Pipes shall be stacked on a flat surface with adequate supports.
3. All pipes to be capped off and extra pipes to be removed for installation area to storage.
4. Any items found damaged or not suitable as per project requirements shall be removed from the site. If require to store temporarily, they shall be clearly marked and stored separately to prevent their use. 

Pre Requirments:

1. Check and ensure all drawings used for installation are latest and approved for construction.
2. Make the pipe routing and support locations as per drawings, and check the co-ordination of piping layout with other services and decide pipe route with minimum bends/offsets.
3. Check and Ensure sufficient Clearance around pipe for applying insulation/cladding as applicable.
4. Clean and apply primer/red oxide on all seamless black steel pipes before installing.

Installation of Chilled Water Pipes:

1. Drill the holes in ceiling/wall for fixing supports, fix the anchors or threaded rods with clevis hangers/structural supports as applicable. Threaded rod length is sufficient to allow for leveling of pipes in future.
2. Cut the pipes accurately to measurements desired at site, and prepare the pipe ends according to the type of joints i.e. Threaded joints or welded joints.
3. Threading shall be done as per fittings/ coupling manufactures recommendations.
4. End preparations for welded joints shall be done as per approved welding procedure.
5. After the end preparation clean the pipe ends and ensure that no material or dust is left inside pipes.
6. Qualified and approved welders with certificates shall be engaged for welding works.
7. Install the pipes sections at heights as per approved drawing in a neat and tidy manner.
8. Insert the rubber inserts between the pipes and supports. 
9. Sleeves of suitable sizes shall be provided as wall crossings/openings.
10. Install the valves in locations as per approved drawings.
11. Install the piping connections with valves and accessories where ever equipment's are installed as per approved drawings and technical specifications.
12. Fix the blind plugs/temporary valves on all drain, air vent, pressure gauge, thermometer, and test points trapping etc as per approved drawings.
13. Check and ensure proper supporting is provided as per approved drawing.
14. While installation is going on of the pipe work, the insulation will be fitted to the pipe work, But all fittings and joints will be left until the pressure testing and inspection is completed and approved.
15. Raise the inspection for chilled water piping installation to consultant. Obtain sign off for hydraulic pressure testing after the test is witnessed.