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The Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres Regulations (Northern Ireland) 2017
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- Northern Ireland Statutory Rules
- 2017 No. 90
- SCHEDULE 1
- SUPPLEMENTARY REQUIREMENTS IN RESPECT...
- Requirements applicable to equipment...
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Requirements applicable to equipment in equipment-group I
Requirements applicable to equipment in category M 1 of equipment-group I
30.—(1) Equipment shall be so designed and constructed that sources of ignition do not become active, even in the event of rare incidents relating to equipment.
(2) Equipment shall be equipped with means of protection such that—
(a)either, in the event of failure of one means of protection, at least an independent second means provides the requisite level of protection; or
(b)the requisite level of protection is ensured in the event of two faults occurring independently of each other.
(3) Where necessary, equipment shall be equipped with additional special means of protection.
(4) Equipment shall remain functional with an explosive atmosphere present.
(5) Where necessary, equipment shall be so constructed that no dust can penetrate it.
(6) The surface temperatures of equipment parts shall be kept clearly below the ignition temperature of the foreseeable air/dust mixtures in order to prevent the ignition of suspended dust.
(7) Equipment shall be so designed that the opening of equipment parts which may be sources of ignition is possible only under non-active or intrinsically safe conditions. Where it is not possible to render equipment non-active, the manufacturer shall affix a warning label to the opening part of the equipment.
(8) If necessary, equipment shall be fitted with appropriate additional interlocking systems.
Requirements applicable to equipment in category M 2 of equipment-group I
31.—(1) Equipment shall be equipped with means of protection ensuring that sources of ignition do not become active during normal operation, even under more severe operating conditions, in particular those arising from rough handling and changing environmental conditions.
(2) The equipment shall be de-energised in the event of an explosive atmosphere.
(3) Equipment shall be so designed that the opening of equipment parts which may be sources of ignition is possible only under non-active conditions or via appropriate interlocking systems. Where it is not possible to render equipment non-active, the manufacturer shall affix a warning label to the opening part of the equipment.
(4) The requirements regarding explosion hazards arising from dust applicable to equipment category M 1 shall be applied.
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