Earthquake Gas Fire Risk — What Building Managers Need to Know
Building managers are responsible for the safety of the people in their buildings and the integrity of the systems that serve them. Gas is one of those systems — and in an earthquake, it carries a risk that deserves specific attention.
Why gas is different from other building services
Most building services fail safely in an earthquake. Power goes out. Lifts stop. HVAC shuts down. These failures are disruptive but not immediately dangerous.
Gas is different. When a gas pipe or fitting fails, gas doesn't stop — it keeps flowing until someone manually isolates it at the meter, or until the supply is automatically cut. In the meantime, gas accumulates in whatever enclosed space it can reach.
The problem for building managers is that the window between a gas pipe failing and a dangerous gas concentration in an enclosed space is short — and in the immediate aftermath of an earthquake, your attention and your team's attention will be on many things at once.
The response challenge
In a real earthquake scenario, a building manager faces:
- Potentially hundreds of occupants to account for and evacuate
- Damaged lifts, stairwells, and access routes
- Disrupted communications — phones, intercoms, building management systems
- Multiple simultaneous faults across building services
- Emergency services overwhelmed and delayed
Reaching the gas meter to manually isolate supply in this environment takes time — and gas doesn't wait. By the time manual isolation happens, gas may already have reached a concentration in a basement plant room, a stairwell, or a ground floor retail tenancy.
Ignition sources in a commercial building are numerous: emergency lighting that switches on automatically, electrical switchgear, a vehicle starting in an adjacent car park. A gas fire following an earthquake can develop faster than evacuation can be completed.
What automatic isolation changes
An automatic earthquake gas shutoff system removes the dependency on human response entirely. The Solid State Seismic Shutoff — MK6 detects ground acceleration and closes the gas supply valve within 10 milliseconds of threshold exceedance — before the destructive shaking arrives, before the evacuation starts, and before anyone has had time to assess the situation.
For a building manager, this means:
- Gas is isolated before you need to think about it
- You can focus on occupant safety without gas fire risk compounding the situation
- Every activation is logged in a 6-digit event counter — you have a documented record for your incident report, your insurer, and your building owner
- Gas is not restored until a qualified person has inspected and cleared the system — the right protocol for a post-earthquake building
What to check in your building
If you manage a building with gas, the following are worth knowing:
Does the building have an automatic earthquake gas shutoff?
Check with your facilities team or the building owner. If the answer is no or unknown, it's worth raising.
Where is the main gas entry point?
Typically in the basement or ground floor plant room. This is where an MK6 would be installed.
How long is the internal gas run?
A building where gas travels through multiple floors of internal pipework has more exposure than one where gas enters and connects directly to an appliance.
What is the manual isolation procedure?
If your emergency procedures don't include a specific gas isolation step, they should. Automatic isolation removes the urgency, but the procedure should exist regardless.
When was the gas system last inspected?
Regular maintenance of gas systems is a legal requirement under the Gas (Safety and Measurement) Regulations 2010 (amended 13 November 2025). An inspection will identify any existing vulnerabilities in the pipework.
Raising it with building owners
Building managers are often in the position of identifying risks that building owners haven't considered. Earthquake gas isolation is a clear example — the risk is real, the solution is well-established, and the cost is modest relative to the asset being protected.
If you want to raise it with your building owner, the key points are:
- The risk is gas accumulation and fire following pipe failure in an earthquake
- Automatic isolation removes the dependency on manual response in exactly the conditions where manual response is hardest
- The MK6 provides an auditable record of every activation — relevant to insurance and compliance
- Installation is carried out by a qualified electrical contractor and is straightforward for most commercial buildings
We're happy to provide supporting technical information to help you make the case.