What is a CP42 commercial catering gas safety record?

A restaurant with a gas kitchen and a gas boiler is two jobs on one site, and it needs two sets of competencies more often than the owner expects. The CP17 covers the building's gas installation. The CP42 covers the cooking line and the environment it sits in, and it is a catering-qualified engineer's document. This guide covers what a CP42 records, how it differs from a CP17, who needs one, what has to be on the engineer's ID card, and why insurers and EHOs ask for it.

What is a CP42?

CP42 is the form code for the commercial catering gas safety inspection record, one of the CP-series forms that came out of CORGI and stayed in trade use after Gas Safe Register took over registration. It is the report an engineer completes after inspecting a commercial kitchen's gas installation, in two halves: the catering environment, covering gas isolation and electrical arrangements, interlocks, extraction and ventilation, then the appliances themselves, one at a time. It is renewed every 12 months. The current form reflects the procedures the trade works to, including IGEM/UP/19 and IGEM/IG/2, Gas Safe Register guidance on catering ventilation and extraction, and BS 6173. None of those are reproduced here: they are the engineer's working references.

How is a CP42 different from a CP17?

They are siblings, not synonyms, and the difference is scope rather than seniority. A CP17, the Non-Domestic Gas Installation Safety Report, covers a premises' gas installation: the supply and pipework, the heating plant, and the flues and ventilation serving it. A CP42 covers the catering installation: the cooking appliances plus the kitchen environment that makes them safe to run, which is why interlocks and extraction sit at its heart and barely feature on a boiler report.

• Scope: a CP17 is the premises' gas installation; a CP42 is the catering appliances and the kitchen environment around them.
• Competencies: a CP17 needs commercial, non-domestic categories; a CP42 needs catering categories, which are a separate lane again.
• What is distinctive: extraction, ventilation interlock and appliance isolation are the substance of a CP42.
• Coverage: a restaurant with a gas boiler and a gas kitchen commonly needs both records, and may need two engineers to produce them. An owner who books one visit and files one certificate often has half the site covered.
• Mobile catering: vehicles and trailers are inspected on their own form rather than sharing the fixed-premises one.

Who needs a CP42?

Any business running commercial catering appliances on gas: restaurants, pubs and hotels, takeaways and fish and chip shops, cafes, school and hospital kitchens, care home kitchens, staff canteens, and catering units at events, with mobile trailers on their own form. The legal footing is the same as for any non-domestic gas. The Gas Safety (Installation and Use) Regulations 1998 require gas appliances and installations to be maintained in a safe condition wherever they are, and an employer carries duties for staff and public safety on top. An annual inspection recorded on the right form is how a catering business shows it has met them. Nobody is fined for lacking a piece of paper marked CP42; the exposure is having no evidence the installation was competently checked.

What does the engineer check?

• The gas supply and pipework into the kitchen, including isolation and emergency control arrangements.
• The ventilation and extraction system, assessed against what is actually installed beneath it.
• The gas and ventilation interlock, so appliances cannot run when the extraction is not.
• Each appliance in turn: condition, operation, combustion performance, flame stability and safety devices.
• Flues and the removal of combustion products where appliances are flued.
• An overall outcome, with defects listed, classified, and the action taken recorded.

The environment half is what makes catering its own discipline. A beautifully serviced range in a kitchen whose extraction has been disconnected, or whose interlock has been bypassed, is a dangerous installation. Defeated interlocks are a familiar find: a busy kitchen decides the fan is noisy, somebody jumps it out, and the safety case for the whole room quietly disappears. That is the finding a CP42 exists to write down.

What must the engineer hold?

Catering categories on their Gas Safe ID card. Commercial catering is a distinct sector within the ACS framework with its own core: CCCN1 on the initial route, or CoDC1 for a domestic engineer coming across on the changeover route. On top of the core sit the COMCAT appliance assessments, which is how the trade talks about catering tickets. The groupings take in ranges, ovens, boiling pans, fryers, griddles and grills, with pressure water boilers and steamers, fish and chip ranges, and forced draught burner appliances assessed separately again, and mobile catering adding an LPG element. A domestic engineer's CCN1 does not reach any of it, and neither does a commercial heating engineer's COCN1. Every ID card lists what its holder is assessed for, so a business can check before booking.

Why do insurers and environmental health ask for it?

Because it is the cheapest evidence available that the kitchen was competently inspected. Commercial insurance on catering premises commonly turns on the gas installation being maintained and inspected, and a claim after a fire is exactly when the question gets asked. Environmental health officers come for food hygiene reasons but see the kitchen whole, and gas and extraction sit inside what they notice. Landlords letting kitchen premises ask too, as do event organisers. None of that changes the legal duty, but it explains why the record is requested far more often than the law alone would predict.

What happens if a defect is found?

The same industry unsafe situations procedure applies as anywhere else in gas work. Defects are classified and recorded, and anything immediately dangerous is turned off and labelled with the responsible person's agreement, which in a working kitchen means a difficult conversation about that evening's service. The path back: remedial work by an appropriately qualified engineer, the paperwork kept, and the appliance recommissioned. What a kitchen must not do is bin the warning label and light the range for the dinner shift.

How do engineers keep catering records straight?

Catering sites are awkward to administer for the same reasons they are interesting to work on: several appliances, more than one record per site, renewal dates that drift apart, and a client who wants last year's report emailed this afternoon. The failure mode is almost never the inspection, it is the filing. Manifold keeps every record against the site and its appliances, so this year's visit opens with last year's findings and renewals get chased before they lapse.