Earthquake Gas Safety for Building Owners & Body Corporates
If your building uses gas, an earthquake could put your tenants and asset at serious risk. Automatic gas isolation protects both — and demonstrates proactive risk management to insurers.
The gas risk most building owners haven't quantified
A large building with centralised gas heating typically has a long internal gas run — sometimes spanning multiple floors. In a significant earthquake, those joints and connections are under stress. Mechanical failures can happen even when the structure itself holds.
When a gas pipe ruptures inside a building, the outcome depends entirely on whether anyone can respond fast enough. In most cases, they can't. Gas fills enclosed spaces quickly. Ignition sources are everywhere — emergency lighting, switchgear, vehicles at street level. The resulting fire can destroy a building that the earthquake itself left standing.
This is not a theoretical scenario. Post-earthquake gas fires are a documented pattern in major New Zealand earthquakes, including the 2011 Christchurch sequence. The financial cost of gas-related fire damage has repeatedly exceeded the cost of structural damage.
What the rules require — and what they don't yet require but soon may
- Gas (Safety and Measurement) Regulations 2010 (updated October 2025) — all gas installations must be maintained safely and gasfitting work must comply with AS/NZS 5601.1:2022
- NZS 4219:2009 — Seismic Performance of Engineering Systems in Buildings — covers gas pipework and services in buildings, setting seismic restraint and performance requirements
- NZS 1170.5 — Earthquake Actions — classifies buildings by importance level; higher-occupancy and critical-use buildings face more demanding seismic requirements
- Earthquake-prone building obligations — if your building is earthquake-prone, remediation obligations may extend to building services including gas
Automatic earthquake gas shutoff is increasingly specified as a risk management requirement by building engineers and insurers — particularly in multi-storey residential, commercial, and high-occupancy buildings. It is not yet universally mandated, but the regulatory direction is clear.
What your insurer is increasingly asking about
Commercial property insurers are paying closer attention to building services risk management. An automatic seismic gas shutoff system demonstrates a proactive, documented approach to gas safety — relevant to:
- Satisfying insurer requirements around gas safety and building services risk
- Supporting business interruption claims where documented safety measures were in place
- Reducing liability exposure in the event of a gas-related incident following an earthquake
We recommend discussing your specific obligations with your insurer and a qualified building engineer.
One device. Automatic protection.
The Solid State Seismic Shutoff (MK6) is an electronic earthquake detection and gas isolation system. It continuously monitors ground acceleration and fires its output relay within 10 milliseconds of threshold exceedance — closing your gas supply valve automatically, before the destructive shaking arrives and before anyone needs to make a decision.
Unlike passive mechanical seismic valves, the MK6 detects the faster-moving P-waves that precede destructive shaking — giving your systems a critical head start.
Every activation is recorded in a 6-digit event counter, giving you a complete auditable log for insurance and compliance purposes.
The MK6 is New Zealand-designed and manufactured, and has been installed in commercial buildings, apartments, hospitals, and public infrastructure across New Zealand and Australia since 1971.
Installation is straightforward
The MK6 is installed at the building's gas entry point on a concrete foundation and wired to an automatic gas shutoff valve. Installation is carried out by a qualified electrical contractor; gas valve commissioning is in accordance with AS/NZS 5601.1.
Once installed, the system requires no ongoing manual intervention. Sensitivity is field-adjustable to suit your building's specific risk profile.
Talk to us about your building →
Not sure where to start?
If you manage or own a building with gas and want to understand your exposure, we're happy to have a straightforward conversation. We can help you understand what's involved, what the right configuration is for your building, and who you'd need to engage to get it installed.