Plumbing RAMS: a complete guide for UK plumbers and heating engineers (2026)

Why plumbers and heating engineers need a RAMS

A RAMS is a Risk Assessment and Method Statement combined into one document. For plumbing and heating work it is the document that proves you have thought through the job before turning a single valve or lighting a blowtorch.

Plumbing looks low-risk next to scaffolding or demolition, and that is exactly why it catches people out. The hazards are quieter - a soldering flame near old joists, a flooded plant room, a confined space under a suspended floor, asbestos lagging on a 1970s pipe run - but they are real, and a main contractor will still ask for your RAMS before you set foot on site.

If you are a sole-trader plumber working in domestic homes, you are not always legally required to produce a formal written RAMS for every job. But the moment you work on a commercial site, a new build, a refurbishment under a principal contractor, or any project that falls under CDM 2015, a RAMS is expected and usually mandatory before you are allowed to start.

Who asks for a plumbing RAMS?

The people who will want to see your RAMS include main contractors and principal contractors letting you onto their site, facilities managers in commercial and public buildings, housing associations and local authorities, and any client running a project where multiple trades are working at once. Increasingly, even private clients on larger domestic refurbishments ask for one.

A clear, trade-specific RAMS does two jobs at once: it keeps you and anyone near you safe, and it gets you through the approval gate without a back-and-forth that delays the job.

The hazards a plumbing RAMS must cover

A generic RAMS downloaded off the internet will not pass a competent contractor's check, because it will not mention the hazards that are specific to plumbing and heating. Here are the ones that matter.

Hot works: soldering, brazing and blowtorches

Capillary soldering, brazing and the use of a naked-flame blowtorch are the single biggest fire risk in plumbing. Work near timber joists, insulation, dust and old building fabric, and a dropped flame or a hot pipe against a stud wall can start a fire that smoulders unseen for hours.

Your RAMS should set out a hot-works procedure: clearing combustibles from the work area, using a heat-resistant mat behind the joint, keeping a suitable fire extinguisher within reach, and carrying out a fire watch for at least an hour after the last flame is out. Many sites require a formal hot-works permit, and your method statement should say you will obtain one where the site demands it.

Where the job allows, press-fit jointing systems remove the flame entirely - and it is worth noting in your method statement when you intend to use them, because it shows the assessor you have designed the risk out rather than just managing it.

Legionella and water systems

Any work that disturbs, stores or stagnates water carries a Legionella risk. Commissioning a new system, working on calorifiers and hot water cylinders, or leaving pipework full and static can all create conditions for Legionella bacteria to grow. The HSE's guidance on Legionella (the ACoP L8) sets the standard.

Your RAMS should cover flushing and disinfection procedures, temperature checks on hot and cold systems, and how you will avoid leaving dead legs and stagnant water in the system you install. On larger commercial systems this links into a wider Legionella risk assessment that the building operator is responsible for.

Confined spaces

Plumbers regularly work in spaces that meet the definition of a confined space under the Confined Spaces Regulations 1997: under suspended floors, in roof voids, in basement plant rooms, in ducts and risers, and in tanks and chambers. The danger is not just being stuck - it is oxygen deficiency, the build-up of gases, and the difficulty of rescue.

If a job involves a confined space, your RAMS must say so explicitly, set out atmosphere testing, ventilation, a safe system of work, and crucially an emergency rescue plan. This is one area where a vague RAMS gets rejected immediately, because confined-space work without a plan is one of the things that kills people in this trade.

Asbestos in older buildings

Pipe lagging, flue insulation, gaskets, rope seals and cement flues in buildings constructed or refurbished before the year 2000 may contain asbestos. Plumbers are one of the trades most exposed, because the work so often means disturbing exactly these materials. The Control of Asbestos Regulations 2012 govern this.

Your RAMS should state that you will check for an asbestos register or refurbishment and demolition survey before starting, that you will stop work and report if you suspect you have found asbestos, and that you will not knowingly disturb it. This single paragraph reassures an assessor more than almost anything else, because it shows you understand the building you are walking into.

Working at height

Guttering, soil and vent pipes, roof flashings, loft tanks and high-level pipework all mean working at height under the Work at Height Regulations 2005. Falls from height remain the biggest cause of death in construction.

Your method statement should specify the access equipment - step ladders for short-duration low-level work, podium steps, towers or a scaffold for anything more - and the pre-use checks you will carry out. "We will use a ladder" is not enough; the assessor wants to see you have matched the equipment to the task and duration.

The gas boundary

If the work involves gas, that work must be carried out by a Gas Safe registered engineer. Your RAMS should be clear about where the plumbing work stops and gas work begins, who holds the registration, and the categories they are qualified for. Blurring this line is a serious failing both legally and on a compliance check.

Electricity near water

Bonding, immersion heaters, electric showers and the simple fact of working with water in buildings full of live electrics all create a risk. Where your work touches electrical connections, the RAMS should set out isolation, lock-off and the boundary with a qualified electrician in the same way it does for gas.

COSHH: fluxes, solvents and jointing compounds

Soldering flux, solvent cements, jointing compounds, descalers and cleaning chemicals all fall under the COSHH Regulations. Your RAMS should reference the safety data sheets, the ventilation you will provide, and the gloves, eye protection and respiratory protection where needed.

Manual handling and slips

Boilers, hot water cylinders, radiators, cast-iron and large-bore pipe, bags of fittings - plumbing is heavy. Manual handling injuries are the slow-burn hazard of the trade. And every leak, drain-down and commissioning test creates a slip risk on the floor. Both belong in the RAMS, with the controls you will use: mechanical aids and team lifts for heavy items, and managing water spillage as you work.

A worked example: RAMS for a boiler replacement in an occupied house

It helps to see how the hazards above turn into an actual method statement. Take a common job: replacing a gas boiler and hot water cylinder in an occupied 1980s house, with the family still living there. Here is how a sound RAMS would walk through it.

Before arrival

The RAMS records that the engineer holds current Gas Safe registration for the relevant categories, that an asbestos check has been made on the existing flue and any pipe lagging given the property age, and that the homeowner has been told which areas will be out of use and for how long. Materials and the new appliance are confirmed as deliverable to the working area to limit carrying through the house.

Sequence of work and controls

Set up: protect floors and the route in, establish a clean working zone, and agree with the occupants that children and pets are kept clear of the work area. Isolate: turn off and lock off the gas, water and relevant electrical circuits, and prove dead before work. Drain down: manage the water released to avoid slips, with a planned route for the discharge. Remove the old appliance: team lift the old boiler and cylinder, using a sack truck on the protected route. Hot works, if used for any soldered joints: heat mat in place, combustibles cleared, extinguisher to hand, and a fire watch after the last flame. Install and connect: new appliance fitted, gas work completed and tested by the Gas Safe engineer, electrical connections within the qualified boundary. Commission and flush: fill, vent and flush the system, with Legionella-aware commissioning so no stagnant water or dead legs are left. Clean up: remove waste, reinstate, and hand back with the occupants briefed on the new controls.

Why this reads as competent

The assessor sees a job described in its real order, with each step tied to the specific control that manages its hazard, and the occupied-house context handled throughout. That is the difference between a RAMS for this job and a template with the name changed.

What we have learned getting RAMS right (and wrong)

Most of what is written above is the standard guidance. This part is not. Complys was built by people who have actually had RAMS handed back across the desk, so here are a few things experience teaches that no template will.

The risk you forget is the one that gets you bounced. We once had a RAMS rejected on a block of flats for a management company because we were working off a scaffold and had not listed fall from height as a risk. The thinking was understandable - we were there as plumbers, not roofers, so the fall risk did not feel like "our" hazard. But the moment you are on a scaffold or up a ladder, working at height is your risk, and a competent checker will spot its absence immediately. If you are off the ground, it goes in the document.

The building will surprise you, so check before you cut. On a domestic job running a boiler flue out through the roof of a rear extension, we found the roof tiles were asbestos. Nothing about the job had flagged it in advance. Because it was a pre-2001 building we checked before disturbing anything, and the right response when you find suspected asbestos is the same every time: stop, do not break it up or drill into it, and get it assessed and handled by a licensed contractor before going any further. A RAMS for any pre-2000 building that says nothing about checking for asbestos is a RAMS written by someone who has not had this happen to them yet.

An unsigned RAMS is not worth the paper. A RAMS only covers the operatives who have actually signed to say they have read and understood it. Anyone on the job who has not signed is not covered - and if something goes wrong, that liability can come straight back to the owner of the company. It is not a box-ticking formality. Every person working under the document signs it before work starts, or the document is not doing its job.

A copied RAMS is usually a worthless one. The most common mistake we see is lifting a RAMS from one job and using it on the next because the work looks similar. Even a template written for you by a health and safety professional is worthless the moment the job in front of you differs from the one it was written for. The hazards, the access, the building, the site rules - if any of those have changed and the document has not, it does not describe the job, and a competent assessor can tell. Producing one properly by hand takes a few hours each time, which is exactly why people are tempted to copy - and exactly why so many submitted RAMS do not stand up.

That last point is really the whole thing in one line: a RAMS is only worth anything if it fits the specific job in front of you and is signed by everyone doing it. Get those two right and most of the rest follows.

A pre-work checklist for plumbing RAMS

Before you submit a plumbing RAMS, or before the team starts on site, run through a short check. A RAMS that can answer yes to these is one that will pass and, more importantly, keep people safe.

• Property age checked - has the building been assessed for asbestos where it was built or refurbished before 2000, and is the asbestos register or survey referenced?
• Gas boundary clear - does the RAMS state who holds Gas Safe registration and exactly where plumbing stops and gas begins?
• Hot works planned - if soldering or brazing is involved, is the hot-works procedure, permit (if the site needs one) and fire watch set out?
• Confined space identified - if any work is under floors, in voids or in plant rooms that qualify as confined spaces, is there a safe system of work and a rescue plan?
• Legionella considered - does commissioning avoid dead legs and stagnant water, with flushing and temperature checks?
• Access matched to task - is the right access equipment specified for any work at height, not just "a ladder"?
• Isolation and lock-off - are gas, water and electrical isolation steps and proving dead included?
• COSHH covered - are fluxes, solvents and compounds referenced with their controls and ventilation?
• Occupants and others - if the building is occupied, is keeping the public clear of the work addressed?

Common reasons a plumbing RAMS gets rejected

Knowing why documents get sent back is the fastest way to write one that does not. These are the failings an assessor sees most often on plumbing RAMS.

It is obviously generic. A template with no mention of the actual property, its age, or the real tasks is the most common rejection. If it could describe any plumbing job anywhere, it describes none of them.

Hot works are glossed over. Mentioning a blowtorch without a hot-works procedure, permit and fire watch is a frequent gap, and a serious one given fire risk.

Asbestos is not addressed in an old building. A RAMS for work in a pre-2000 property that says nothing about checking for asbestos in lagging or flues signals the engineer has not thought about the building.

The gas boundary is blurred. Failing to state who is Gas Safe registered and where the gas work sits is both a competence flag and a legal one.

Confined-space work has no rescue plan. Identifying a confined space but not setting out how someone would be rescued is an immediate rejection, because it is exactly where people die.

Access at height is vague. "Use a ladder" for a job that clearly needs a tower or podium tells the assessor the access has not been thought through.

How to write a plumbing RAMS that passes

A RAMS that gets approved first time has a few things in common, whatever the trade.

Make it specific to the job

The fastest way to get a RAMS rejected is to submit something obviously generic. An assessor can tell within seconds whether the document describes this job in this building, or whether it is a template with the company name changed. Name the site, the actual tasks, the real access arrangements, and the specific hazards present.

Follow the sequence of work

The method statement should walk through the job in the order it will actually happen: arrival and setting up, isolation of services, the work itself broken into stages, testing and commissioning, and clearing up. Each stage links to the hazards it creates and the controls that manage them.

Rate the risks honestly

The risk assessment side rates each hazard by how likely it is and how serious the outcome would be, then again after your controls are in place. This residual-risk approach follows HSE's risk assessment guidance and is what a competent assessor expects to see.

Keep it readable

The people who actually need to follow a RAMS are the operatives on site, not just the assessor who approves it. Plain language, a clear sequence and a short list of controls beat ten pages of boilerplate that nobody reads.

Doing it the fast way

Writing a full plumbing RAMS by hand for every job is the kind of paperwork that eats evenings. That is exactly the problem Complys was built to solve: answer a few questions about the job and the trade, and it generates a complete, plumbing-specific risk assessment and method statement that you can edit, download and share. The hazards above - hot works, Legionella, confined spaces, asbestos, working at height - come built into the plumbing templates, so you start from a document that already knows the trade rather than a blank page.

If you want to understand the wider picture first, our guide to what a RAMS is and how to write one covers the fundamentals, and the difference between a RAMS and a risk assessment clears up the most common confusion. You can also see every trade we cover on the RAMS builder hub.

However you produce it, the goal is the same: a RAMS that keeps your team safe, gets you onto site without delay, and stands up when a contractor checks it.