Black & White Facilities / Service brief
Gas Interlock Systems
A gas interlock shutdown may indicate a ventilation problem rather than a failed control panel. Record repeated lockouts, failure to enable gas and any extraction changes, including the sequence and displayed indications, so investigation can establish why the appliances are being stopped.

Overview
Set out the required operating outcome alongside the immediate interlock fault. Identify the kitchen, affected people and changes in use so the assessment addresses the current installation rather than simply recreating its previous arrangement.
Our full service catalogue, including every individual service, is available across every listed sector and location. For one site or several, we agree the scope, access and programme around the buildings concerned.

What the service can include
Define the interlock, ventilation inputs, gas-control interface and safety functions within the instruction. Assessment and repairs need the appropriate gas, electrical and ventilation competence, with records showing the functions checked and restrictions still in place.
What to consider
The interlock prevents gas appliances operating when required ventilation conditions are absent. A manual bypass cannot substitute for resolving the fault. Establish the actual installation and control method before deciding what changes are appropriate.
Allocate the work included in the instruction and the arrangements retained by the property team. Connected repairs and specialist activities need clear scopes, named responsibilities and expected records so each interface has an owner.
Before we visit
Provide diagrams, panel details, ventilation records and alarm history. Identify affected appliances, those responsible for gas and extraction, the shutdown authority and the tests required to demonstrate the intended sequence.
How we help
Establish the intended sequence before investigating the relevant inputs and equipment. Agree repairs that address the cause and interfaces, then complete the specified functional checks and records, including operator information and unresolved matters.
Where interlocks form part of an estate programme, keep reporting consistent while retaining local contacts and operating requirements. Actions should identify their building or service area, with a named escalation route for decisions affecting several sites.
What affects cost and timing
Controls, records, access and the fault itself influence the cost. Ventilation repairs may be needed alongside control work, so allow for coordinated attendance and the period when gas equipment cannot be used.
Plan around operating hours, critical service periods and activities that must continue. Account for any phased delivery, additional access and reporting in the programme and price so the kitchen team can assess the operational implications.
Sector applications
In Offices, access must consider staff and visitors; in Retail, trading and deliveries shape the working window. Hospitality adds guest areas and food operations, while education requires coordination with teaching and access. The all sectors directory provides the wider service and project context for the site's activity.
Local coverage
Gas interlock requirements can be discussed for sites across Northumberland, Tyne and Wear, County Durham and Tees Valley. Listed locations include Berwick-upon-Tweed, Alnwick, Morpeth, Hexham, Newcastle, Gateshead, Sunderland, Durham, Darlington, Hartlepool, Stockton-on-Tees and Middlesbrough, with the full list in the all locations directory.
For an instruction spanning several kitchens, supply a contact and working restrictions for each address. Preserve those premises-specific details within the common brief so local operating and access requirements remain explicit.
Frequently asked questions
Can the interlock be bypassed to keep cooking?
No. The underlying condition needs appropriate assessment and repair rather than a bypass to continue cooking.
Does a lockout prove the panel has failed?
No. The panel may be responding correctly to ventilation conditions or another relevant input.
Should interlocks be reviewed after fan changes?
Yes. Check that the changed equipment and controls still deliver the required operating sequence.
Can tests be included in planned kitchen maintenance?
Yes. Specify the functions, competence and records required; a visual inspection should not be recorded as a complete functional test.
Knowledge and guidance
Read how often kitchen extraction should be cleaned alongside setting maintenance frequencies when planning kitchen maintenance. Official guidance gives relevant gas-safety context, and further guidance is available through the Knowledge Centre.
Related services and your next step
Consider Commercial Kitchen and Catering Equipment and Commercial Kitchen Gas Safety when defining the interlock's interfaces. Related routes include maintenance and Minor Works, with the complete services and projects directories available for wider requirements.
Contact Black & White Facilities with the affected kitchens, operating requirement and available control records. Describe the intended outcome and working constraints to establish the instruction and next step.
Discuss the scope
Tell us what needs attention.
Share the site, the issue and any access requirements so we can discuss the next step.