Procedures for principal components and guidance on replacement parts, precautions to secure safety of personnel and to minimise hazards to plant.Cross References:BS 162BS 2692:Part 1BS 2769BS 4727:Part 2:Group 06BS 4941:Part 1BS 5209BS 5304BS 5306BS 5345BS 5420BS 5730 BS 5856:Part 1BS 5907BS 6423BS 6626 CP 1003CP 1013Health and Safety at Work etc. Act 1974Health and Safety (First Aid) Regulations 1981 Electricity Supply Regulations 1937Factories Act, 1961Electricity (Factories Act) Special Regulations 1908 and 1944Mines and Quarries Act, 1954Coal and other Mines (Electricity) Regulations 1956Quarries (Electricity) Regulations 1956Miscellaneous Mines (Electricity) Regulations 1956Coal and other Mines (Mechanics and Electricians) Regulations 1965