When some storage tanks have been isolated and purged to meet the requirements while the other tanks are still in operation with contents inside, what level of management should be applied for hot work?
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Hot work 12: When performing hot work within areas containing flammable and explosive storage tanks, if the tank where the work is to be carried out has been isolated and purged successfully, but other tanks remain in operation while still containing material, at what level of management should this hot work be governed?
In areas where flammability and explosiveness are concerns, there are still storage tanks operating while containing material; such situations are classified as special-grade