Explosion proof lighting will be used where there is a potential for flammable products to be present.All 110 volts lighting will be protected by Ground fault interrupters and bird caged.In case of presence of flammable gas,it is advisable to use 24 volts.All personnel in confined space & the safety watch will carry portable lighting in case of power failing.All confined space entries shall have a safety watch posted immediately outside the confined space,who will be able to communicate with workers inside.He should be readily visible and identifiable by reflective vests.
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