Gas Safe ACS

Gas Safety Regulations

25 free practice questions with explanations

PassNova has 25 free Gas Safe ACS practice questions on Gas Safety Regulations, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.

Sample questions

Gas Safety Regulations: example questions & answers

12 worked examples with answers and explanations below. Practise all 25 Gas Safety Regulations questions free in the browser, with instant feedback on every answer.

  1. What is the primary legislation governing gas safety in the UK?

    • AThe Gas Act 2000
    • BGas Safety (Installation and Use) Regulations 1998
    • CHealth and Safety at Work Act 1974
    • DBuilding Regulations 2010

    Answer: The Gas Safety (Installation and Use) Regulations 1998 is the main legislation for gas safety, including installation and maintenance.

  2. Who is legally responsible for maintaining gas appliances in a rental property?

    • AThe tenant
    • BThe local authority
    • CThe landlord
    • DThe gas supplier

    Answer: Landlords are legally responsible for maintaining gas appliances and installations in rental properties.

  3. What is the maximum time allowed between Gas Safety certificates in a rental property?

    • A1 year
    • B2 years
    • C3 years
    • D5 years

    Answer: An annual Gas Safety check and certificate is required for gas appliances in rental properties.

  4. What must a Gas Safety certificate include?

    • AOnly the boiler details
    • BDetails of all gas appliances, tests carried out, and the engineer's details
    • CJust the address
    • DOnly the cost of repairs

    Answer: A Gas Safety certificate must detail all appliances inspected, tests performed, and engineer information.

  5. What is RIDDOR in the context of gas safety?

    • AA brand of gas appliance
    • BReporting of Injuries, Diseases and Dangerous Occurrences Regulations
    • CA testing procedure
    • DGas regulation standards

    Answer: RIDDOR requires reporting of certain incidents and accidents relating to gas, including carbon monoxide exposure.

  6. What must be reported under RIDDOR for gas-related incidents?

    • AAll work completed
    • BAccidents, injuries, and dangerous occurrences
    • CJust maintenance work
    • DEquipment purchased

    Answer: Gas-related injuries, illnesses, and dangerous situations must be reported under RIDDOR.

  7. What is an Approved Code of Practice (ACoP) in gas safety?

    • AA suggestion from the manufacturer
    • BPractical guidance on how to comply with gas safety regulations
    • COptional best practice
    • DA brand certification

    Answer: Approved Codes of Practice provide practical guidance on complying with gas safety regulations.

  8. Who can carry out Gas Safe work on domestic installations?

    • AAny plumber
    • BOnly Gas Safe registered engineers
    • CAnyone with relevant experience
    • DLandlords without training

    Answer: Only Gas Safe registered engineers can legally carry out gas installation and maintenance work on domestic properties.

  9. What is the consequence of carrying out gas work without Gas Safe registration?

    • AA warning letter
    • BFine up to £300
    • CCriminal offence with potential imprisonment up to 2 years and unlimited fines
    • DNo consequence; it is voluntary

    Answer: Carrying out gas work without Gas Safe registration is a criminal offence under the Gas Safety (Installation and Use) Regulations 1998. Penalties include imprisonment and unlimited fines.

  10. What must be done if a dangerous gas condition is discovered?

    • AContinue using the appliance
    • BImmediately isolate the appliance and issue a warning notice
    • CRepair it yourself
    • DTell the customer later

    Answer: Dangerous gas conditions must be immediately isolated and a formal warning notice issued to the occupant.

  11. What information must a Gas Safe registered engineer provide to the customer?

    • AOnly an invoice
    • BCertificate details, any faults found, and recommendations
    • CJust their name
    • DNo information required

    Answer: Engineers must provide detailed information about work done, faults found, and any remedial actions.

  12. What is a 'dangerous situation' in gas safety terms?

    • AA noisy boiler
    • BAny condition that could lead to injury, death, or property damage
    • CA dirty burner
    • DAge of equipment

    Answer: A dangerous situation is any condition that poses risk of injury, death, or significant property damage.

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