Quick answer
Use appropriately competent gas specialists, maintain appliances and associated systems, and make sure ventilation remains suitable for the kitchen’s actual use. Check the engineer’s relevant gas and appliance qualifications rather than registration alone. Carbon monoxide alarms support precautions; they do not replace safe installation, ventilation and maintenance.
The appliance, ventilation and work need to function together
Gas equipment can present fire, explosion, leak and carbon monoxide risks if installation, use or maintenance is unsuitable. Carbon monoxide cannot be reliably detected by a person’s senses.
HSE’s employer gas guidance explains maintenance and competence duties. HSENI’s commercial catering guidance identifies the corresponding employer responsibilities in NI. Use the current framework for the actual premises.
1. Verify the engineer and the work category
For restaurants and similar premises within the relevant gas-safety regime, HSE requires an appropriately qualified Gas Safe registered engineer for gas work. Check the person’s current identity, registration and qualifications for the fuel and appliance involved.
Some industrial premises have particular legal scope, which HSE explains separately. Obtain competent advice for that situation; a general awareness course or confidence with a domestic appliance is not proof of competence for commercial gas work.
| Check | Useful evidence or decision |
|---|---|
| Engineer | Current identity/registration and relevant gas and appliance work categories. |
| Work scope | Which appliance, pipework, flue, safety device or connected system needs work. |
| Maintenance plan | Manufacturer information, use, required inspections and a named person arranging them. |
| Findings | Clear defects, restrictions, remedial actions and confirmation before return to use. |
| Changes | Review before changing appliances, layout, fuel or operating arrangements. |
2. Maintain the system and suitable ventilation
HSE’s catering gas information sheet addresses maintenance, ventilation and staff awareness. Inspection and servicing should fit the equipment, use and manufacturer’s recommendations; the guidance describes annual inspection as a generally reasonable minimum, not a single rule covering every possible system or duty.
Have competent people review whether ventilation and associated safety arrangements suit the actual appliances and operation. Keep required air routes and systems effective. Do not bypass a safety control because it prevents service continuing.
Hypothetical example: adding another cooking appliance
A business plans to add an appliance under an existing canopy. The manager obtains suitable advice on the gas installation and ventilation before assuming spare floor space means the system can support it. The operating and maintenance information is updated after the agreed work.
3. Specify suitable alarms and understand their limits
HSE’s catering guidance says commercial conditions need appropriate alarm/monitoring specification; an ordinary domestic alarm should not simply be assumed suitable. Arrange any required integration, testing and maintenance through suitable competent advice and the manufacturer’s requirements.
An alarm warns of a problem. It does not correct a defective appliance, inadequate ventilation or unsafe use. Where the kitchen uses charcoal, wood or other solid fuels, follow the separate HSE commercial solid-fuel CO guidance as well.
4. Make the response to a suspected problem clear
Train staff in the actual operating instructions, fault reporting and emergency arrangements. They need to know what to do about a gas smell, alarm, damaged connection or other suspected unsafe condition and whom to contact from a safe place.
If a leak or CO problem is suspected, put the site’s emergency arrangements into action, get people away from danger and obtain appropriate emergency help. HSENI provides NI CO information and local emergency contacts. The contact route must suit the location and fuel supply.
For suspected CO exposure, NHS guidance says to go outside, obtain medical advice promptly and not return until advised. Use the appropriate local medical/emergency route; do not attempt workplace diagnosis or restart an appliance to test a theory.
- Checking registration but not work categories. Verify the actual competence needed.
- An alarm used as the maintenance plan. Maintain the primary safeguards.
- New equipment added without a system review. Assess ventilation and installation implications.
- Unclear fault or emergency contacts. Give staff a workable site-specific response.
Next steps
- Identify appliances, fuel and applicable gas-work responsibilities.
- Verify engineering competence and the maintenance plan.
- Check ventilation, safety controls and suitable alarms for actual use.
- Explain fault reporting and local emergency routes, and review proposed changes.
Read HSE’s employer gas-safety guidance — Use the official competence and maintenance guidance before commissioning gas work.