This General Pipework checklist can be used and completed throughout the project and its different stages covering:
- installation &
Once the pre-functional checks have been completed, including all equipment and ancillaries related to the pipework system, the full functional testing/commissioning can be conducted.
This checklist should be used and completed throughout the project, and its different stages, delivery, storage, installation & pre-commissioning, before the functional testing occurs.
Once the Pipework arrives at the site, usually delivered by a transport company, and before being accepted into storage, the following should be checked with the driver.
Any damage that is noted should be reported to the manufacturer/supplier immediately in writing supported with photographs.
|1||Supplier's consolidated delivery ticket is available, showing all equipment and ancillaries for inspection and being used to check against.|
|2||A copy of the order that was sent to the supplier is available for reference and is being used to check against.|
|3||Pipework is packaged with end caps to protect the internal surfaces.|
|4||Pipework has the correct wall thickness.|
|5||Pipework has the correct flanges.|
|6||Pipework is dry internally.|
|7||Pipework is not damaged.|
|8||Pipework surfaces are clean and not scratched|
|9||Red oxide paint has been applied, where required and is in good condition.|
|10||All ancillaries are included in delivery as per the order and delivery note|
|11||Replace any protection that has been removed|
If the pipework is to be placed into storage on site prior to installation there will be an inspection completed checking the following.
|1||The area is internal and will not be affected by weather.|
|2||If the pipework is not to be stored internally but externally, there is sufficient protection available to protect it from weather and ambient conditions.|
|3||The surface where the pipework is to be placed is flat.|
|4||The area is well covered and protected.|
|5||The area is well ventilated and no risk of high humidity.|
|6||The area is clean & dust free.|
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Storage of the Pipework
Prior to the pipework being placed into storage, the following should be checked.
|1||Pipework will not be over stacked.|
|2||Pipework will not have materials stacked on it.|
|3||All ancillaries will be placed in a safe and secure location, so items do not go missing or get damaged.|
|4||Pipework/connection caps protecting the flanges are not removed.|
|5||The pipework will be raised from the floor to allow airflow and stop risk of water ingress.|
Prior to the pipework being installed the following should be checked.
|1||The bracketry is ready and can bear the weight of the installation and has been spaced correctly.|
|2||The room/area is dry and watertight.|
|3||Area being installed is not prone to flooding or ponding of water.|
|4||The room/area the pipework will be installed into is clean and dust-free.
If there is dust/construction work, then the pipework should be protected from concrete dust, cement etc.
|5||Check to ensure that all connection kits containing - gaskets, bolts, are available to allow bolting up of the pipework.|
|6||Pipework is clean and free of damage|
|1||There is enough space allowed around and above the pipework once installed to perform maintenance and remove components, where required.
[check the manufacturer's maintenance instructions for requirements]
Once the pipework has been installed and prior to the functional testing and commissioning phase taking place, the following will be checked.
|1||Pipework is installed in line with the project drawings [size, location].|
|2||Piping is free to expand and contract without noise or damage to hangers, joints, or the building.|
|3||Seismic restraints, where required, installed.|
|4||Pipework does not put undue stress on equipment, where connected and is bracketed to support itself.|
|5||All piping supports and hangers meet criteria set out in the specifications.|
|6||Piping is installed with sufficient pitch and arranged in a manner to ensure drainage and venting of the entire system.|
|7||Manual air vents are provided at high points in closed water systems.|
|8||Ensure all gaskets are installed and sealed.|
|9||Ensure that all bolts are installed as per manufacturer's instructions.|
|10||Any nipples installed are made of the same material as the pipe.|
|11||Any connections between copper and steel pipes are made with dielectric fittings.|
|12||A union is provided ahead of each screwed valve, trap, or strainer, and on each side of each piece of equipment and whatever needed to dismantle piping.|
|13||Any changes in pipe sizes are made with the proper size reducing fittings, reducing fittings, reducing elbow, or reducing tees. Bushings are not allowed.|
|14||All fittings meet specification requirements.|
|15||All fittings and ancillaries are rated correctly and inline with the pressure of the system.|
|16||All equipment requiring maintenance is accessible (valves, junction boxes, etc.).|
|17||Piping does not block access to equipment that is part of this system or another system (e.g., air terminal units).|
|18||Drain valves are provided at all low points in hose bib piping to facilitate seasonal draining.|
|19||All valves [isolation, commissioning, non-return etc] are installed as per the drawings|
|20||All strainers are installed as per the drawings and baskets are clean.|
|21||Pipework is insulated as per the specification and vapor sealed where required.|
|22||Piping is installed in a manner to ensure that insulation will not contact adjacent surfaces.|
|23||Any pipe openings are temporarily sealed to maintain piping system cleanliness.|
|24||All components including valves and controls are labeled in line with the project naming convention.|
|25||Instruments, flow meters, energy meters, and commissioning stations have been installed in line with the manufacturer's requirements and correct direction.
This includes distances from turbulent flows etc.
|26||All pressure gauges installed, and display scale as per design requirements.|
|27||Pipework has been magnetic weld tested, where specified.|
|28||Pipework has been ultrasonic weld tested, where specified.|
|29||System has been filled and bled with air removed.|
|30||Pipework has been pressure tested.|
|31||Pipework has been internally flushed, cleaned and chemically treated.|
|1||All drawings have been updated to reflect any changes made.|
General Pipework Checklist [Open]
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