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Significance and Use
5.1 Inspection, repair, and construction of ASTs in petroleum service should follow at a minimum the requirements of API 650 and API 653. These standards describe methods for testing the weld quality and structural and hydraulic integrity of new or repaired ASTs. With increasing emphasis on protecting the environment and with environmental issues related to the storing of petroleum materials in ASTs, owners and operators of such tanks may want or need a guide devoted to existing and enhanced methods for evaluating the hydraulic integrity of new or repaired tank bottoms.
5.2 The consequences of a tank bottom failure include the economic loss of product, cost of repair or replacing the tank bottom, and exposure to the cost of environmental remediation and potential damage or harm to adjacent lands that may give rise to adverse public relations or regulatory action. In addition, releases of petroleum products introduce potential fire or explosive conditions.
5.3 Owners and operators of ASTs or their agents can use this guide to help choose methods of evaluating the hydraulic integrity of their repaired or new tank bottoms. Selection of the methods should be based on regulatory and economic criteria that include operational and cost/benefit considerations.
5.4 This guide is intended for use by an individual experienced in repair and construction of ASTs in petroleum service.
5.5 This guide is intended for use when repairing or building ASTs. This guide does not address suitability for use or imply useful life of an AST bottom.
5.6 This guide is intended to be used in conjunction with and as a supplement to standards provided for hydraulic integrity in API 650 and API 653.
5.7 Procedures or methods included here may be supported by a previously completed and documented performance evaluation(s) that may lend itself as valuable results validation.
1.1 This guide is intended to provide the reader with a knowledge of construction examination procedures and current technologies that can be used to give an owner or operator of an aboveground storage tank (AST) in petroleum service, relevant information on the hydraulic integrity of a new, repaired, or reconstructed tank bottom prior to return to service. This guide does not pertain to horizontal ASTs, manufacture of tanks using UL 142, or to tanks constructed of concrete or other non-ferrous materials.
1.2 The adoption of the mathods and technologies presented in this guide are not mandatory, rather they represent options that may be selected to identify the likelihood of product leaking through a new, repaired, or reconstructed tank bottom.
1.3 This guide is not intended to suggest or treat any technology in a preferential manner.
1.4 The person responsible for applying this guide should be a knowledgeable individual with experience in the design, inspection, construction, or combination thereof, of aboveground storage tanks for use in petroleum service, and should also be certified under the requirements of API 653 when use is related to tank bottom repair.
1.5 This guide is written in metric measure units (SI Units) in accordance with requirements of Practice E621. English measure equivalents are in parentheses.
1.6 The applicability of this guide to the proposed tank configuration and service conditions should be established prior to use.
1.7 This guide complies with ASTM policy for development and subsequent use of a standard.
1.8 This guide is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Your comments are invited either for revision of this guide or for additional standards and should be addressed to ASTM International, 100 Barr Harbor Drive, W. Conshohocken, PA 19428.
1.9 This guide is not intended for use as a model code, ordinance or regulation.
1.10 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A6/A6M Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling
A20/A20M Specification for General Requirements for Steel Plates for Pressure Vessels
A36/A36M Specification for Carbon Structural Steel
A53/A53M Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
A106/A106M Specification for Seamless Carbon Steel Pipe for High-Temperature Service
A333/A333M Specification for Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications with Required Notch Toughness
D3282 Practice for Classification of Soils and Soil-Aggregate Mixtures for Highway Construction Purposes
E165 Practice for Liquid Penetrant Examination for General Industry
E621 Practice for Use of Metric (SI) Units in Building Design and Construction(Committee E06 Supplement to E380)
E709 Guide for Magnetic Particle Testing
E1209 Practice for Fluorescent Liquid Penetrant Testing Using the Water-Washable Process
E1219 Practice for Fluorescent Liquid Penetrant Testing Using the Solvent-Removable Process
E1220 Practice for Visible Penetrant Testing Using Solvent-Removable Process
Other DocumentsAPI571 Damage Mechanisms API575 Inspection of Atmospheric and Low-Pressure Storage Tanks API577 Welding, Inspection and Metallurgy API581 Base Resource Document-Risk-Based Inspection API650 Welded Steel Tanks for Oil Storage API653 Tank Inspection, Alteration, and Reconstruction APIPublication322 An Engineering Evaluation of Acoustic Methods of Leak Detection in Aboveground Storage Tanks, Jan. 1994 Available from American Petroleum Institute (API), 1220 L. St., NW, Washington, DC 20005-4070, http://www.api.org. APIPublication334 A Guide to Leak Detection for Aboveground Storage Tanks, Mar. 1996 APIRP479 Fitness for Service APIRP580 Risk Based Inspection ASMESectionVandIX Boiler and Pressure Vessel Code Available from American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://www.asme.org. AWSB1.10 Guide for the Nondestructive Inspection of Welds Available from American Welding Society (AWS), 550 NW LeJeune Rd., Miami, FL 33126, http://www.aws.org. AWSQC1-96 Standard for AWS Certification of Welding Inspectors SNTTC-1A Society for Nondestructive Testing Recommended Practice Available from American Society for Nondestructive Testing (ASNT), P.O. Box 28518, 1711 Arlingate Ln., Columbus, OH 43228-0518, http://www.asnt.org. STI1–SP001 Steel Tank Institute Standard Available from Steel Tank Institute / Steel Plate Fabricators Association 944 Donata Ct. Lake Zurich, IL 60047, http://www.steeltank.com
ICS Number Code 75.200 (Petroleum products and natural gas handling equipment)
UNSPSC Code 24111803(Storage tanks)