SCHEDULE 1ESSENTIAL HEALTH AND SAFETY REQUIREMENTS
SUPPLEMENTARY REQUIREMENTS IN RESPECT OF EQUIPMENT
Requirements applicable to equipment in category 1 of equipment-group II
Explosive atmospheres caused by air and dust mixtures33
1
Equipment shall be so designed and constructed that ignition of air and dust mixtures does not occur even in the event of rare incidents relating to equipment.
2
It 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 so designed that dust can enter or escape from the equipment only at specifically designated points.
4
The requirement in sub-paragraph (3) shall also be met by cable entries and connecting pieces.
5
The surface temperatures of equipment parts shall be kept well below the ignition temperature of the foreseeable air and dust mixtures in order to prevent the ignition of suspended dust.
6
With regard to the safe opening of equipment parts, sub-paragraph 32(5) applies.