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When dealing with any refrigerant, personal safety and the safety of others are vitally important. Service and maintenance staff need to be familiar with safety procedures and what to do in the event of an emergency. Health and safety requirements are available from manufacturers of all refrigerants and should be obtained and studied. Safety codes are available from the Institute of Refrigeration inLondon, for HCFC/HFC refrigerants (A1 and A2), ammonia (B2)and hydrocarbons (A3) In the UK and most of Europe, it is illegal to dispose of refrigerant in any other way than through an authorized waste disposal company. The UK legislation expects that anyone handling refrigerants is competent to do so and has the correct equipment and containers. Disposal must be through an approved contractor and must be fully documented. Severe penalties may be imposed for failure to implement these laws.