3.0 Definition of Hazardous Substance Any substance classified as hazardous by the following regulations: The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2004 Chemicals (Hazard Information for Packaging and Supply) Regulations 2002 Highly Flammable Liquids and Liquefied Petroleum Gases Regulations 1972 Hazard classifications include: Flammable gas; Compressed gas; Toxic gas; Flammable liquid; Flammable solid; Spontaneously combustible; Dangerous when wet; Oxidising agent; Organic peroxide; Toxic, Harmful; Corrosive, Irritant; Dangerous for the environment. 4.0 Hazards The types of incidents that present the highest risk are those involving fires. Such fires expose employees, members of the emergency services and the general public to the threat of radiated heat, missiles, harmful smoke and fumes. In addition, significant incidents may cause widespread distribution of substances harmful to the environment, either in plumes or water used to fight fires. Other types of incident include loss of containment and accidental combination of incompatible substances which may result in violent chemical reactions. The following table details some of the common hazards: Classification Hazard Minor leaks from cylinders of compressed gases may disperse more readily if the cylinders are stored in the open air. Cylinders of liquefied gases should be stored in an upright Compressed gas position so that any leaks from valves etc will be of vapour or gas rather than liquid. Most types of cylinder will explode if exposed to intense heat, causing a risk of impact to people in the vicinity even if the cylinder contents are non-hazardous. Acetylene cylinders in particular are liable to explode without warning, during or for some time after exposure to heat, because of the Toxic gas of the product.
3.0 Definition of Hazardous Substance Any substance classified as hazardous by the following regulations: The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations 2004 Chemicals (Hazard Information for Packaging and Supply) Regulations 2002 Highly Flammable Liquids and Liquefied Petroleum Gases Regulations 1972 Hazard classifications include: Flammable gas; Compressed gas; Toxic gas; Flammable liquid; Flammable solid; Spontaneously combustible; Dangerous when wet; Oxidising agent; Organic peroxide; Toxic, Harmful; Corrosive, Irritant; Dangerous for the environment. 4.0 Hazards The types of incidents that present the highest risk are those involving fires. Such fires expose employees, members of the emergency services and the general public to the threat of radiated heat, missiles, harmful smoke and fumes. In addition, significant incidents may cause widespread distribution of substances harmful to the environment, either in plumes or water used to fight fires. Other types of incident include loss of containment and accidental combination of incompatible substances which may result in violent chemical reactions. The following table details some of the common hazards: Classification Hazard Compressed gas Toxic gas Minor leaks from cylinders of compressed gases may disperse more readily if the cylinders are stored in the open air. Cylinders of liquefied gases should be stored in an upright position so that any leaks from valves etc will be of vapour or gas rather than liquid. Most types of cylinder will explode if exposed to intense heat, causing a risk of impact to people in the vicinity even if the cylinder contents are non-hazardous. Acetylene cylinders in particular are liable to explode without warning, during or for some time after exposure to heat, because of the of the product.