Pressurized apparatus in which entry of a flammable gas into the apparatus enclosure is prevented by maintaining within the enclosure a protective gas, usually air, at a pressure above the external atmosphere. Supplements Part 1.
BS 5501-3:1977
Original price was: $190.50.$95.00Current price is: $95.00.
Electrical apparatus for potentially explosive atmospheres-Pressurized apparatus ‘p’
BSI Group , 12/30/1977
Pages: 18
