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Post by Wheldale on Oct 6, 2010 14:22:55 GMT -5
when i worked in south africa on the gold mine we used eimco bucket loaders. These were run of compressed air via a 2 inch hose. These hoses picked up alot of static and sparks could at times be seen. My question is - is this the same in coal mines? Are the compressed air hoses earthed?
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Post by John on Oct 6, 2010 14:51:27 GMT -5
when i worked in south africa on the gold mine we used eimco bucket loaders. These were run of compressed air via a 2 inch hose. These hoses picked up alot of static and sparks could at times be seen. My question is - is this the same in coal mines? Are the compressed air hoses earthed? |
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Post by tonys on Oct 6, 2010 20:09:50 GMT -5
It’s not mining, but I’ve worked on a number of pulverised coal plants for firing kilns also solvent handling plants. All air hoses would have a conductive braid incorporated in the construction. Un-braided hoses are also made with semi-conductive compounds.
With the duct work, every section and joint had copper bonding straps, the structural steelwork wasn’t classified as earth bonding.
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