What classification does hot work carried out on utility pipelines (such as circulating water, nitrogen, etc.) fall under?
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This post was last edited by Shutong on 2023-7-20 at 12:01. What category does hot work carried out on utility pipelines that are in operation (such as circulating water, nitrogen, etc.) fall under?
Class A hot work. Main basis: Article 5.1.2 of the \"Safety Specifications for Special Operations in Hazardous Chemical Enterprises\" GB 30871-2022. Class I hot work: Hot work carried out on production equipment, pipelines, storage tanks, containers, and other components that are in operation in areas prone to fire and explosion (including hot work performed under pressure without gas displacement) ； Hot work within the fire dike of a tank farm containing major hazard sources of flammable and explosive materials.
Class 1 hot work, and holidays fall under special hot work.
Special-grade hot work; such tasks have been carried out before, so it is possible to downgrade it to level 1