How to Store LP Gas Cylinders Safely: The Complete South African Guide
Published 10 May 2025
Improper LP gas cylinder storage is one of the leading causes of gas-related incidents in South Africa. This guide gives you everything you need to store your cylinders correctly.
Why Correct LP Gas Storage Is Essential
LP gas cylinders contain pressurised, flammable gas. When stored correctly, they are extremely safe. When stored incorrectly, indoors, near heat sources, or on their sides, they present a genuine fire and explosion risk. In South Africa, SANS 10087 (Part 1: Domestic Installations) and SANS 10087 (Part 3: Commercial and Industrial Installations) provide the regulatory framework for LP gas storage. Compliance is not optional; it is a legal and insurance requirement.
The Golden Rules of LP Gas Cylinder Storage
1. Always store cylinders upright.
LP gas cylinders must be stored vertically, valve end up. Storing them on their side allows liquid propane or butane to contact the valve and pressure relief device, which can cause them to function improperly or release gas in liquid form, significantly more dangerous than vapour.
2. Store outdoors or in well-ventilated areas.
LP gas vapour is heavier than air and will sink to the floor in enclosed spaces, creating a potentially explosive concentration. Always store cylinders outdoors or in a purpose-built, ventilated gas cage or cage enclosure. Never store cylinders in basements, under staircases, in bathrooms, kitchens, or any enclosed room.
3. Protect from heat and direct sunlight.
LP gas cylinders should not be stored where they can be heated above 50°C. Avoid storing cylinders in small, enclosed metal structures (like shipping containers or corrugated iron outbuildings) that can heat up significantly in the South African summer sun.
4. Keep away from ignition sources.
Maintain a minimum distance from open flames, electrical switchgear, generators, and other ignition sources. SANS 10087 specifies minimum distances, typically 1 metre from combustible materials and 3 metres from drainage grates and basement openings for domestic installations.
SANS 10087 Storage Requirements in Plain Language
SANS 10087 is a detailed standard, but the core storage requirements for domestic LP gas users can be summarised as follows:
Storing Empty Cylinders
A common misconception is that empty cylinders do not require the same care as full ones. This is wrong. An "empty" cylinder always contains residual gas vapour that is flammable. All the same storage rules apply to empty cylinders:
When returning cylinders to Alectra Gas for exchange, ensure the valve is fully closed and the cylinder is secure during transport.
Transporting LP Gas Cylinders Safely
When collecting or delivering LP gas cylinders in your vehicle:
Frequently Asked Questions
Can I store LP gas cylinders in my garage?
A garage attached to the house is considered a habitable space under SANS 10087 and is not suitable for LP gas storage. A detached, well-ventilated garage may be acceptable if it meets the ventilation and setback requirements, but an outdoor gas cage is always the preferred option.
How many LP gas cylinders can I legally store at home?
For domestic premises in South Africa, you may store up to three cylinders with a combined total of no more than 100kg of LP gas without needing approval from the local authority. For larger quantities, you need authorisation from your municipality.
Do I need to notify my home insurer about my LP gas cylinders?
Yes. Most South African home insurers require disclosure of LP gas cylinders stored on the property, particularly for quantities above a single domestic cylinder. Failure to disclose can invalidate your claim in the event of a gas-related incident. Ensure your cylinders are stored in compliance with SANS 10087 to maintain coverage.
Can I transport a full LP gas cylinder in my car?
You should avoid transporting full LP gas cylinders in an enclosed passenger car. Use an open vehicle (bakkie or trailer) with the cylinder secured upright. If you must use a car, open the windows fully, keep the trip short, and never leave the cylinder in a hot, parked car.