TANK INSPECTION, REPAIRALTERATION AND RECONSTRUCTIONTHIRD EDITION - DECEMBER 2001ADDENDUM 1 - SEPTEMBER 2003SECTION 1 - INTRODUCTION1.1 General1.1.1 This standard covers carbon and low alloy steel tanks built to API-650 and12C standards. These standard provide minimum requirements formaintaining the integrity of welded or riveted, non-refrigerated,atmospheric pressure, above ground storage tanks after they have beenplaced in service.1.1.2 Scope coverageFoundation, bottom, shell, structure, roof, attached appurtenances andnozzles to the face of the first flange, first threaded joint or first weldedend connection.NOTES: 1. Many API-650 requirements apply that will satisfythis new code.2. In case of conflict (for in-service tanks) between API-12C; 650; and 653, this latest Code governs.1.1.6 API 653 now recognizes API RP 579, Recommended Practice for Fitness-for-Service. Under API 653 , the owner may use fitness-for-service criteria.1.2 ComplianceThe owner/ operator has ultimate responsibility for complying with API 653provisions.1.3 JurisdictionStatutory Regulation (i.e., local, state or federal) shall govern, unlesstherequirements of this standard are more stringent than Statutory Regulation.1.4 Safe Working PracticesSafety procedures according to guidelines given in API publications 2015, 2016,and 2217A are suggested for potential hazards involved when conductinginternal inspections, making repairs or dismantling tanks.NOTE: Procedures must comply with any state or federal safetyregulation involving "confined space" entry.