CKR1 revision notes
Cooker safety — ventilation, stability, flame supervision and clearances.
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BS 6172: Cooker Ventilation & Stability
- Common gas cooker safety defectsThe cooker faults you are expected to spot, why each one is dangerous, and the first thing to do about it.
- Flame supervision devices on hobs and ovensHow a cooker flame supervision device holds the gas on, shuts it off when the flame is lost, and how to test and judge it.
- Flexible cooker connections, bayonet hoses and stability restraintsHow a freestanding cooker is restrained against tipping, how the chain protects the hose, and how the bayonet behaves when the cooker moves.
- Gas cookers, room air and ventilationThe ventilation a kitchen needs for a gas cooker: an openable window, a permanent vent by room volume, and what does not count.
Cooker Installation, Clearances and Stability
- Gas cooker clearance and stability checksStep-by-step siting checks for a gas cooker: clearances above, beside and behind, stability, the connection and the room itself.
- The cooker connection: bayonet fitting and flexible hoseHow a freestanding cooker's bayonet and flexible hose are chosen, fitted and routed, and the hose faults that must be put right.
Cooker Flame Picture, Combustion and Commissioning
Connect CKR1 cooker questions to the safety check
In a cooker or hob scenario, identify the appliance and the stated installation conditions before choosing a response. Revise stability, connections, ventilation and flame supervision together, then explain what evidence each check provides.
The CKR1 revision guide gives a route through these topics. Use the flame supervision device guide to distinguish detecting flame failure from other protections, and revisit core gas practice when a cooker question exposes a gap in the underlying safety principles.
In-depth guides for this module
Longer walkthroughs that sit alongside the revision notes.
CKR1 revision guide: cookers, hobs and cooking-appliance safety
CKR1 is the cooking-appliance ticket: siting, connection, stability, ventilation and flame supervision around an appliance that flues into the room.
Gas tightness test procedure: let-by, stabilisation and timed test
A tightness test proves whether installation pipework holds pressure, but the exact limits and method come from the current standard and assessment route.
More Gas modules
Every module has its own revision notes and question bank.