FLUSHING & CLEANING | Pre-Works Check List

December 20, 2022 |

This flushing & cleaning pre-works checklist can be used and completed throughout the project and its different stages covering:

  • delivery,
  • storage,
  • installation &
  • pre-commissioning/pre-functional works

Once the pre-functional checks have been completed, including all equipment and ancillaries related to the flushing and chemical cleaning works, 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 flushing works occur.

List of Temporary Equipment

When completing the flushing and cleaning works, the following equipment could be used:

  • Temporary Water Pump
  • Temporary Power Board
  • Variable Speed Drive
  • Temporary Electrical Cable
  • Temporary Hoses
  • Temporary Water Tanks
  • Temporary Side Stream Filter
  • Spare Filters
  • Chemicals
  • Dosing Pot

The below checks will cover the above equipment and chemicals.

Flushing and Chemical Cleaning Pipework Delivery Checklist

Delivery Inspection

Once the Flushing Equipment 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 within 3 days in writing supported with photographs.

RefInspection/Task
1Supplier's consolidated delivery ticket is available, showing all equipment, chemicals, and ancillaries for inspection and being used to check against.
2A copy of the order that was sent to the supplier is available for reference and is being used to check against
3Equipment and ancillaries are packaged and crated in separate boxes, for maximum protection
4Chemicals are supplied in line with COSHH requirements and datasheets.
5Dosing pot is the correct size
6The pump & pump motor nameplate and details match the purchase order and are supplied on base for mounting.
7All pipework connections are the correct size.
8Flanges and Pipework connections are undamaged
9Pump/s are dry internally
10Spin the pump impeller to ensure it is not damaged and out of line
11The external casing of the pump/s are undamaged
12All base frames, if ordered are included
13Temporary electrical panel supplied for connection of the temporary pump.
14Temporary electrical cable correct type, size, and length.
151Temporary water tanks are the correct size, with correct connections.
16Temporary side stream filters are the correct size and connections.
17Spare filters delivered for temporary side stream filter equipment
18All hoses are correct size Pump SuctionPump DischargeMains WaterDrainage
19Temporary double regulating valve correct size and flow rate.
20Isolation valves correct size
21Strainers correct size
22Delivery protection is dry where included.
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Flushing and Chemical Cleaning Pipework Storage Checklist

Storage Inspection

Storage Area

If the temporary equipment and chemicals are to be placed into storage on site prior to installation there will be an inspection completed checking the following.

RefInspection/Task
1The area is internal and will not be affected by the weather. [if the pump is not rated for external use]
2The surface where the equipment is to be placed is flat.
3The area is well covered and protected.
4The area is well ventilated and has no risk of high humidity.
5The area is clean & dust-free.
6All chemicals can be stored in line with their COSHH Datasheet and manufacturers' requirements. Bunded area, well ventilated etc

Storage of the Temporary Equipment & Chemicals

Prior to the temporary equipment being placed into storage, the following should be checked.

RefInspection/Task
1Equipment will not be stacked.
2Equipment will not have materials stacked on it.
3All ancillaries will be placed in a safe and secure location, so items do not go missing or get damaged.
4All original packaging is intact and not removed.
5Pipework/connection caps protecting the flanges of the pump are not removed.
6The equipment will be raised from the floor to allow airflow and stop the risk of water ingress.
7All chemicals are stored in line with their COSHH Datasheet and manufacturers' requirements.
8Spill kit available for any issue with the chemicals.
9All PPE required for chemicals available.
Flushing and Chemical Cleaning Pipework Equipment Checklist

Pre-Installation Inspection

Prior to the temporary equipment being installed the following should be checked.

RefInspection/Task
1The plinth/base is ready, flat, and level & can bear the weight of the pumps, temporary panel, and temporary water tanks.
2The room/area is dry and watertight.
3The area being installed is not prone to flooding or ponding of water.
4The room/area is clean and dust-free. If there is dust/construction work, then the temporary pumps and tanks should be protected.
5Any pipework connections, can be easily connected with the correct radius and independently supported, not supported by the pump/s.
6Check to ensure that all connection kits containing - gaskets, bolts, are available to allow bolting up of the temporary pumps to the system.
7Remove all transport feet and bolts.
8There is an available electrical supply for the pump panel.
9There is an independent water supply, with a sufficient volume flow rate and is independent of the site water supply. The water will not be interrupted unless agreed with the flushing contractor.
10There is independent drainage, with a sufficient volume flow rate and is independent of the site. The drainage will not be interrupted unless agreed with the flushing contractor.
11Pipework system provides connections that are the correct size for the temporary side stream filter.
12The pipework system provides connections that are the correct size for the temporary dosing pot.
13There will not be any trip hazards from the installation of the temporary equipment and pipework.
14All flushing loops and bypasses can be installed with correct valve configurations, as per the method statement.
Flushing and Chemical Cleaning Pipework Works Checklist [2]

Pre-Works Inspection

Once the temporary equipment and chemicals have been installed and prior to flushing works taking place, the following will be checked.

Documentation

RefInspection/Task
1Method Statement and Functional Test Procedure approved by the client team.
2Any flushing and cleaning strategy documents are approved by the client team.
3Temporary setup of equipment drawing/information approved by the client team.
4Any permits requested and issued in time for completing the works.
5Weld testing of pipework completion documentation available.
6Pressure Testing of pipework completion documentation available.

Pressure testing will usually consist of all pipework up to the flushing loops. Once flushing, cleaning, and backflushing has been completed, there will be a full pressure test of the complete system.
7Pump testing completion documentation is available.
8Electrical test records are available for the temporary pump & side stream filter.
9Operation and startup manual for the Pumps available.

Pumps/Pipework and Ancillaries

RefInspection/Task
1Ensure that the temporary pump is installed in the correct orientation to the system pipework and the impeller rotates in the correct direction.
2Ensure temporary pump/s are level.
3Ensure all gaskets are installed and sealed.
4Ensure that all bolts are installed as per the manufacturer’s instructions.
5Ensure temporary pumps are aligned in accordance with the manufacturer’s instructions.
6All vibration mounts installed
7Seismic restraints, where required, installed.
8All components including valves and controls are labeled.
9Ensure that the pipework and connections are the correct size and in line with the drawing.
10Ensure the installation of the pipework will not put stress on the Pump connections or create vibrations.
11Temporary pipework that is connected to the pump/s has been pressure tested.
12Pumps have been primed in line with the manufacturer’s requirements.
131The system has been bled and the air removed.
14Pipework is insulated and vapor sealed, where required.
15All pressure gauges installed, and display scale as per design requirements.
16All valves/control valves are installed and incorrect direction
17All commissioning devices are installed
18All Strainers are installed and inspected to ensure the mesh is clean.
19All expansion/rubber bellows are installed at least 1.5x the pipe diameter away from the pump for the inlet and the outlet.
20A temporary cold-water main has been connected with an isolation valve for control, in line with the method statement.
21The temporary drainage main has been connected with an isolation valve for control, in line with the method statement.
22A temporary side stream filter has been installed and is able to operate.
23Spare filters are available for temporary side stream filters.
24A temporary dosing pot has been installed to allow the introduction of chemicals during the flushing process.
25Temporary water tanks were installed and connected in line with the method statement.

Chemicals for Flushing

RefInspection/Task
1All chemicals are available as per the method statement.

Electrical General

RefInspection/Task
1Temporary pump/s and components are fully earthed in line with the manufacturer’s instructions.
2Earthing has been tested.
3Emergency disconnect installed for each pump in line with NFPA/local code requirements.
4Electrical voltage from the site matches the pump required voltages.
5All cabling is installed and connected on the correct containment and not damaged.
6All cabling has been tested/torque tested.
7A temporary distribution panel has been installed.
8The temporary distribution panel has been electrically tested.
9All electrical cabling is labeled in line with the project naming convention.

Variable Speed Drive

RefInspection/Task
1A temporary variable speed drive has been installed.
2Temporary variable Speed Drive [VSD] has been electrically tested
3Temporary variable speed drive has been functionally tested

Flushing & Chemical Cleaning Pre-Works Checklist [PDF]

We have formatted the above into an Open copy of [Microsoft Word] + [Microsoft Excel] for purchase at a nominal cost to help grow the site and resources. If you would like an Open copy emailed to you, click the button to be taken to our shop.

Flushing & Chemical Cleaning Checklist [MS Word] + [MS Excel]

Here is our open copy [MS Word] of the Flushing and Cleaning Checklist, for making life a little easier...

We have also recently formatted this checklist to [MS Excel] and included it as a Bonus for FREE. 

So get MS Word & MS Excel for the same price.


#CC: 049j
Buy Here | $1.99
Please do not underestimate the impact your purchase can have on this site; it allows us to re-invest in more content/resources, keeping those annoying banner adverts away.

Pipework Flushing & Cleaning Pre-Works Checklist [Microsoft Word]

B049j-Flushing-Checklist

Pipework Flushing & Cleaning Pre-Works Checklist [Microsoft Excel]

049j-Flushing-and-Chemical-Cleaning-Checklist


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