Boiler House fact sheet Gas Facts: Natural gas is predominately Methane. It is approximately half the weight of air and will rise towards the ceiling or roof space of a plant room. Each and every flammable gas has a minimum and maximum concentration in air, when if ignited will generate an explosion. This is called the explosive or flammable range.
Safe Management of Boiler/Plant Rooms Including Asbestos
The Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) require employers to control the risks to safety from fire, explosions and substances corrosive to metals. They can be found in nearly all workplaces and include such things as solvents, paints, varnishes, flammable gases, such as liquid petroleum gas (LPG), dusts
Combustible Gas Risk In Boiler Rooms: Natural gas ( Mainly Methane ) expands rapidly and is lighter than air it therefore rises to the roof space in a boiler room. Many gases such as natural gas, methane are flammable within a range of concentration known as the explosive or flammable range.
explosive or flammable products or explosion of the boiler itself if maximum safe water temperature is exceeded. Maximum safe water temperature is 2100 Fahrenheit. Flammable or explosive products must never be stored in the same room or in the vicinity of a boiler, and the boiler water temperature must never be allowed to exceed 2100 Fahrenheit.
Flammable and combustible materials must not be stored in boiler/plant rooms. No LPG cylinder or flammable/toxic gas cylinder of any description shall be stored or left in boiler/plant rooms. Boiler/plant rooms must be kept free of clutter and must not be used for general
Where possible, less flammable solvents should be used in preference. Where highly flammable solvents are used and the public are present, it is difficult to constantly maintain effective control over all sources of ignition, such as smoking or portable electronic equipment. Consequently hazardous area classification is not appropriate.
In a boiler house where gas is the major fuel used then it is no longer appropriate to use fusible links because the hazard is very different. If a gas leak develops there is no heat to melt the fusible link. The gas will not ignite until the lower explosive limit (LEL) of