1 Scope
This part defines the conditions in which an electrical apparatus liable to cause an ignition may be used in a room or building situated where flammable gases or vapours may be present, the ingress of these gases or vapours into the room being prevented by maintaining inside it a protective gas at a higher pressure than that of the outside atmosphere.
This part includes recommendations for the construction, equipping and operation of rooms or buildings and their associated parts such as inlet and exhaust ducts for the protective gas, and auxiliary control devices necessary for the satisfactory production and maintenance of the overpressure.
It also recommends the tests necessary to show that the installation conforms to these recommendations, and the marking to be placed on the rooms or buildings.
This part concerns only rooms or buildings in the interior of which there is no internal release (actual or potential) of flammable gases or vapours.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute provisions of GB 3836. For dated reference, subsequent amendments to (excluding amending error), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this Standard are encouraged to study whether the latest editions of these documents are applicable. For any undated references, the latest edition of the normative document referred to applies.
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification of the interior of the room
5 Principles of construction of rooms
6 Protective measures
7 Values of overpressure and of protective gas flow
8 Protective gas supply
9 Verifications and tests
10 Marking
