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Gas Safety

Exam revision materials for Plumbing Level 2&3 and ACS Gas Safety test

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Gas Pipework

Pipe Protection

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Safety Devices and Controls

Air/Gas ratio valves

Appliances Controls

Flame Supervision Devices FSD

Gas Controls

Gas Meter Controls

Safety Cut-off Devices

Spare Part Identification

Pipework

Open-vented System

Ventilation

Gas Appliances

Ventilation Sizing

Unsafe Situations

Dealing with Unsafe Situations

Emergency Notices and Warning Labels

Gas Leak

Regulations

Commissioning

Purging

Tightness Test

Gas Performance

Gas Rate

Heat Input

Gas Supply

Gas Meters

Gas Pipework

Gas Fittings and Pipes

Gas Supply

Materials

New Installation

Pipe Protection

Pipework Sizing

Chimney and Flue

Chimneys

Flue Construction

Flue Inspection and Testing

Flue Terminals

Flue Types

Combustion

Carbon Monoxide Poisoning

Combustion Process

Natural Gas

Portable Combustion Gas Flue Analysers

Boilers

Components and Safety Devices

Support and Insulation

  • 25mm - min extension of any protection applied beyond the surface of corrosive material
  • 40mm - min depth below concrete slabs with pedastrian traffic

Maximum Interval Between Pipe Supports
Material Size mm Vertical m Horizontal m
Mild steel up to DN 15 2.5 2.0
DN 20 3.0 2.5
DN 25 3.0 2.5
Copper tube up to 15 2.0 1.5
22 2.5 2.0
28 2.5 2.0
Corrugated stainless steel DN 10, 12, 15, 22, 28 0.6 0.5
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