SAFETY & EMERGENCY

Gas Safety & Emergency Guide

Clear, practical steps for gas leaks, gas fires, cylinder problems and other LPG emergencies.

5 min emergency read 14 Jun 2026John Stayte Safety Team
UK Calor gas cylinder safety equipment in home setting
IMMEDIATE ACTION

Think You Have a Gas Leak?

If you detect the distinctive smell of gas, hear a hissing noise, or feel unwell near an appliance, follow this strict 5-step emergency sequence immediately.

Domestic gas cooker hob with open window ventilation
Brass gas isolation valve and appliance pipework
Woman opening window to ventilate gas fumes in kitchen with Calor gas cylinder
01

Stop ignition sources

No naked flames, cigarettes, matches, or lighters. Do not touch any electrical switches, power sockets, doorbells, or mobile phones.

02

If safe, isolate the supply

Turn off the cylinder handwheel valve clockwise or switch the clip-on regulator to OFF. If gas is dense, skip directly to evacuation.

03

Open doors & windows if safe

Allow fresh outdoor air to dilute the vapour on your immediate way out without lingering.

04

Get everyone outside

Evacuate all occupants and pets into fresh open air well away from the building.

05

Call for help from a safe location

From an outdoor safe distance, call John Stayte Support on 01452 741234 or dial 999 for emergency services.

Gas stove burner with open high flame
Red LPG cylinder valve emitting pressurized gas vapour leak
Hand turning stainless steel gas appliance control knob
CRITICAL EMERGENCY

If Gas Has Caught Fire

Never fight a gas cylinder fire yourself. Gas escaping under high pressure creates extreme thermal radiation and risk of explosion.

DO NOT APPROACH

Do not approach a burning cylinder or any equipment subjected to radiant heat.

DO NOT MOVE CYLINDER

Never carry or drag a heated or burning gas bottle. High pressure weakens hot metal.

EVACUATE THE AREA

Move all people and animals outdoors immediately behind solid masonry cover.

CALL 999 FROM DISTANCE

Inform the 999 operator that pressurized LPG cylinders are present on site.

Stay clear until declared safe by Fire Service.
DIAL 999 IMMEDIATELY
Red LPG cylinder with visible gas vapour leak escaping from the valve connection
VALVE & HOSE LEAKS

Cylinder Leaking?

If a cylinder is hissing or leaking gas around the valve, neck spindle, or regulator connection:

Step 1

Recognise

Smell gas, hear hissing, or see bubbles with soapy water leak test solution.

Step 2

Isolate if safe

Close the cylinder handwheel firmly clockwise or flip the regulator switch to OFF.

Step 3

Move to safety

Move the leaking cylinder outdoors to a well-ventilated area, 10m clear of drains.

Step 4

Get professional help

Contact John Stayte Support on 01452 741234 for safe on-site cylinder recovery.

Safety Warning: Never attempt to repair, dismantle, or force a leaking cylinder, valve spindle, pressure regulator, or hose yourself.
Visual safety comparison showing a severely dented rejected gas cylinder with red cross versus a certified safe cylinder with green checkmark
DEFECT CRITERIA

Do Not Use a Damaged Cylinder

Damaged cylinders can fail catastrophically under internal pressure. Inspect every cylinder for these critical red-flag defects:

Deep dents & creases
Severe corrosion & rust
Burn or heat marks
Damaged valve spindle
Visible leaks / hissing
Collar / foot ring distortion
STOP

STOP — DO NOT USE DAMAGED EQUIPMENT

Isolate the cylinder outdoors and contact John Stayte Services for safe exchange.

Report Defect
LPG gas cylinders in storage cage exposed to radiant fire and intense heat
THERMAL OVERPRESSURE

Cylinder Exposed to Heat?

When an LPG bottle is subjected to direct fire or intense radiant heat, internal pressure rises exponentially.

Move people away immediately: Keep a safe perimeter of at least 50–100 metres behind cover.
Do not touch or move the cylinder: Structural integrity is compromised when steel is heated.
Call 999 if immediate danger exists: State clearly that heated LPG cylinders are involved.
Digital carbon monoxide detector installed in UK home
BS EN 50291 Audible Detector
SILENT TOXIC GAS

Carbon Monoxide — The Silent Danger

Carbon Monoxide (CO) has no smell, taste, or colour. It starves the body of oxygen without warning.

Warning Symptoms to Recognise:
HeadacheTension band
DizzinessLightheaded
NauseaSickness
WeaknessMuscle fatigue
ConfusionDisoriented
BreathlessnessShort of breath

GET INTO FRESH AIR IMMEDIATELY

If you suspect CO poisoning, leave the building into fresh outdoor air right away, seek emergency medical care (dial 999 or 111), and do not re-enter until approved by specialists.

Domestic gas hob showing proper blue burner flame
Proper combustion should produce a crisp, steady blue flame.
APPLIANCE SAFETY

Know the Warning Signs

Never continue using a faulty appliance. Watch for these hazardous operational indicators:

⚠️ Unusual FlameLazy yellow or floppy orange flame instead of crisp blue.
⚠️ Soot & StainingDark black marks forming on or above the appliance.
⚠️ Pilot OutagesPilot light repeatedly goes out or pops when lighting.
⚠️ Unusual SmellAcrid, burning, or pungent smell while running.
⚠️ Unusual NoisesLoud popping, roaring, or hissing sounds.
⚠️ Heavy CondensationExcessive moisture building on room windows.
Turn off unsafe appliances & book a Gas Safe inspection.01452 741234 →
DECISION INFOGRAPHIC

What Should I Do? — Emergency Decision Flow

Follow the visual flowchart below to immediately identify the safest course of action.

Core Emergency Sequence
STEP 01

SMELL GAS?

Initial hazard detected

STEP 02

AVOID IGNITION

No switches or flames

STEP 03

ISOLATE SUPPLY

Close valve if safe

STEP 04

MOVE OUTSIDE

Evacuate into fresh air

STEP 05

CALL FOR HELP

01452 741234 or 999

Specific Emergency Scenarios
SCENARIO ACRITICAL

Fire Involved?

When active flames or extreme radiant heat are threatening pressurized gas bottles.

EVACUATE IMMEDIATELY
DO NOT APPROACH
CALL 999 FROM DISTANCE
SCENARIO BDEFECT

Cylinder Damaged?

For physical bottle dents, heavy rust, distorted foot rings, or damaged spindles.

DO NOT USE / CONNECT
KEEP PEOPLE AWAY
CONTACT JOHN STAYTE
SCENARIO CMEDICAL

CO Symptoms?

For unexplained headaches, dizziness, nausea, confusion, or breathless sensations.

GET INTO FRESH AIR
DO NOT RE-ENTER
URGENT MEDICAL HELP 999
DIRECT CONTACTS

Emergency Support

Always place emergency calls from an open-air safe location outside the property.

John Stayte Services

Technical advice & cylinder recovery

01452 741234

Mon–Fri 8:00am–5:00pm | Sat 8:00am–12:30pm

Immediate Danger / Active Fire

UK Emergency Services (Fire / Police)

DIAL 999

Available 24/7 UK-wide from any telephone

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