Requirements for Safe Entry andCleaning of Petroleum StorageTanksANSI/API STANDARD 2015-2001SIXTH EDITION,AUGUST 2001AmericanPetroleumANSIInstituteHelping YouGet The JobDone Right.MNo roproduction or notworking permitled without liconso from IHSNot for Rosaled by IHS undoNo roproduction or notworking permitled without liconso from IHSNot for Rosale