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Closed-system flushing and dosing RAMS Builder
Closed-system flushing and dosing risk assessment and method statement
Prepare RAMS for cleaning a closed heating loop or chilled-water loop and dosing it afterwards. Give the site and loop details, edit the suggested steps and review the PDF draft.
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Prepare the Closed-system flushing and dosing RAMS
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Pick everything this RAMS covers. The questions that follow are chosen from what you tick here.
What a Closed-system flushing and dosing RAMS covers
Flushing, chemical cleaning and dosing of a closed heating or cooling circuit, from isolation and drain-down to the final treatment.
- Clean heating loop
- Clean cooling loop
Suggested steps and hazards for Closed-system flushing and dosing
What it offers for clean heating loop before you have answered anything.
Confirm the loop and treatment
- Identify the closed loop, its pipe and plant materials, and any treatment already in it.
- Match the cleaner and inhibitor to the system before dosing; stop if either is unknown.
Hazard
An incompatible treatment damages pipework, seals or plant.
Who might be harmed and how
The treatment worker and plant owner
Controls in place
- Use the maker's product information.
- Refer unknown materials or previous treatment to the service provider.
The loop and treatment must be identified before dosing starts.
Domestic hot and cold water supply and central heating Make the heating loop safe to open
- Isolate the plant and loop, let hot parts cool and release pressure before opening a drain or connection.
- Prove the isolation and keep anyone from restarting the plant while the loop is open.
Hazard
Hot or pressurised water escapes and injures someone.
Who might be harmed and how
The treatment worker and plant staff
Controls in place
- Use the site's isolation procedure.
- Stop if the loop cannot be isolated, cooled or depressurised safely.
A closed loop can hold heat and pressure after the plant has been switched off.
Domestic hot and cold water supply and central heating Plan the drain and discharge
- Agree the drain points, discharge route and refill water before opening the loop.
- Protect nearby plant and keep treatment water out of unsuitable drains.
Hazard
Contaminated treatment water reaches people, plant or unsuitable drainage.
Who might be harmed and how
The treatment worker, plant staff and the environment
Controls in place
- Keep the discharge route controlled from the first drain-down to the final flush.
- Use the site waste and discharge arrangements.
The drain and refill route need controlling before treatment water is released.
Domestic hot and cold water supply and central heating
What the builder asks about Closed-system flushing and dosing
Your answers decide which steps, hazards and controls it suggests.
The job
- What heating loop are you cleaning?
- What cooling loop are you cleaning?
- What condition and contamination are known?
How it’s done
- What will you stand on to reach the work?
- What treatment product and method are specified?
- How will the final fill be checked and protected?
- How will the loop be flushed and put back?
What your Closed-system flushing and dosing RAMS includes
Method statement
The sequence of the work, step by step. The suggestions are a starting point; you write the method for the job as it will be done.
Risk assessment
Each hazard, who could be harmed, the controls in place and any further action. There is no risk score: you judge each row against the real site, and adding a hazard does not put its controls in place.
PDF draft for review
The document as you left it, for someone competent to check. A download is not approval and not permission to start work.