The usage environment of explosion-proof electrical equipment is typically highly corrosive and harsh. Regular maintenance of explosion-proof electrical equipment is a crucial task to guarantee its sustained and effective explosion-proof performance.
I. Maintenance of Explosion-proof Electrical Equipment When it is discovered during maintenance that the explosion-proof performance of explosion-proof electrical equipment has deteriorated or failed due to external force damage, atmospheric corrosion, chemical corrosion, mechanical wear, natural aging, and other reasons, maintenance is necessary. The maintenance of explosion-proof electrical equipment should be conducted in accordance with the corresponding regulations. If the original explosion-proof performance grade cannot be restored after maintenance, it can be handled based on the actual technical performance following the principles below:
1. Utilize at a lower explosion-proof grade.
2. Convert to non-explosion-proof electrical equipment for usage.
II. Failure of the Explosion-proof Performance of Explosion-proof Electrical Equipment When it is identified during maintenance that the structure and parameters of explosion-proof electrical equipment have changed, and they do not conform to the original explosion-proof type and design and cannot be repaired, it is determined as a failure and should be promptly decommissioned and replaced. For instance:
1. The enclosure of flameproof electrical equipment is severely deformed and cannot be repaired.
2. The flameproof surface is severely damaged and cannot be repaired.
3. The flameproof gap exceeds the standard and cannot be repaired.
4. The enclosure of explosion-proof electrical equipment is cracked and does not meet the requirements of the original explosion-proof type.
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