API Std 2015 (R2006)

This standard provides safety practices for preparing, emptying, isolating,ventilating, atmospheric testing, cleaning,entry,hotwork and recommissioning activities in, on and around atmospheric and low-pressure (up to and including 15 psig) above ground storage tank that have contained flammable, combustible or toxic materials. This standard directs the user from decommissioning (removal from service) through recommissioning (return to service). This standard applies to stationary tanks used in all sectors of the petroleum and petrochemical plants, and terminals.