- Do NOT use electrical switches or devices
- Don’t turn lights, sockets, or appliances on or off.
- Sparks can ignite leaking gas.
- Extinguish all flames
- Do not smoke, strike matches, or use lighters.
- Turn off the gas supply
- Locate your gas emergency control valve (ECV) — usually next to your gas meter.
- Turn the handle a quarter turn so it’s across the pipe (horizontal) to shut off the gas.
- Open doors and windows
- Ventilate the property to disperse gas and reduce the risk of explosion.
- Evacuate if necessary
- Leave the property if the smell is strong or if you feel dizzy, nauseous, or lightheaded.
- Call the National Gas Emergency Service immediately
- 📞 0800 111 999 (Free, 24/7)
- Use a mobile phone or neighbour’s phone outside the property.
- Do not call from inside the affected area.
- Wait outside for the emergency engineer
- Do not re-enter the property until you’re told it’s safe.
🔧 ADDITIONAL STEPS FOR GAS ENGINEERS
If you’re a Gas Safe registered engineer attending a reported leak:
- Carry out a tightness test
- Use a manometer to perform a Gas Tightness Test in accordance with IGEM/UP/1B (for domestic installations).
- Check for evidence of gas escape
- Use gas leak detection spray or an electronic combustible gas detector.
- Isolate the faulty section or appliance
- Cap or disconnect any appliance found to be leaking.
- Tag unsafe equipment as “Immediately Dangerous (ID)” in line with the Gas Industry Unsafe Situations Procedure (GIUSP).
- Report and document the incident
- Record findings on a Warning Notice or Job Sheet.
- Advise the customer not to use any affected appliance until rectified by a competent person.
- Carry out necessary repairs and re-test
- Once leaks are repaired, repeat the tightness test to confirm the installation is gas-tight.
🧯SPECIAL NOTES
- If the leak is from a cylinder (LPG): Move it outdoors if safe, away from drains or ignition sources, and contact the supplier.
- If you suspect carbon monoxide (CO): Turn off appliances, open windows, evacuate, and call the emergency service.
Disclaimer: Please get full advise from Gas Safe Register before taking any action. This is just a general guidance
