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​ A biological hazard (biohazard) is any microorganism, cell culture or human endoparasite, including those genetically modified, that can cause infection, allergy, toxicity or create a hazard...

The first or initial level of firefighter decontamination uses equipment carried on pumping appliances. The equipment may range from hose reels to primary shower units. This level of procedure may...

Explosives are generally categorised as those that: Deflagrate: a technical term describing subsonic combustion that usually spreads through thermal conductivity (hot burning material heats the...

The chemical compound ammonium nitrate (AN), chemical formula NH4NO3, is a white crystalline solid at room temperature and standard pressure. It is commonly used in agriculture as a high-nitrogen...

Only in the case of small leaks that have ignited and posed a contact hazard may flames be extinguished with dry agent before freeze-sealing techniques are applied. Evacuation of the surrounding...

RADSAFE RADSAFE is a consortium of organisations that have come together to provide mutual assistance in the event of a transport accident involving radioactive materials belonging to a RADSAFE...

​Cryogenic liquids are liquefied gases that are kept in their liquid state at very low temperatures. All cryogenic liquids are gases at normal temperatures and pressures. The vapours and gases...

Quantity and surface area As the quantity of a flammable liquid increases so does the risk; a large quantity can generate a spill with a greater surface area than a small quantity. Increased...