Gas Installations Standards and Practices

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Steel, copper, and polyethylene (PE) tubes for gas installations must conform to specific standards.

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Steel Tube: BS 1256, BS EN 10255, BS EN 10255, BS EN 15266 Copper Tube: BS EN 1057, BS EN 1254, BS EN 1057, BS 8537 Polyethylene (PE): BS 5114, BS EN 1555-1/2, BS EN 1555-1/2, BS EN 1555-1

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Mechanical joints should not be used on gas pipework in certain locations.

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Avoid using mechanical joints on kitchen and bathroom walls, under floorboards with no access, on outside walls, and on top of mineral fibre insulation in a roof space.

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Assembly of press end connections and electrofusion joints.

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Should be in accordance with BS EN 1057, manufacturer's instructions, Copper Tube Society instructions, and Gas Safe Register Technical Bulletins.

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Gas pipework connection when the meter is not securely restrained.

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Use compression fittings only, a minimum of 28 mm diameter copper, securely fixed rigid pipe for at least the first 600 mm, or flexible connections both upstream and downstream.

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Minimum cross-sectional area for the main protective bonding conductor on gas pipework.

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Should be made using a cable with a minimum cross-sectional area of 2 mm², 6 mm², 10 mm², or 18 mm².