API 653

Last update: October 2, 2013

API Std 653, "Above Ground Tank Inspection" is a standard published and developed by the American Petroleum Institute (API) that covers the inspection, repair, alteration, and reconstruction of steel aboveground storage tanks used in the petroleum and chemical industries. This standard provides the minimum requirements for maintaining the integrity of welded or riveted, non-refrigerated and refrigerated, atmospheric pressure, aboveground storage tanks after they have been placed into service.

Special thanks to the following contributors:

Orlando Costa, Braskem Petrochemical

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Non-Intrusive Inspection of Above Ground Storage Tanks and Its Use in a Tank RBI Program
Inspectioneering Journal
By Sam Ternowchek at Mistras Group
Maintaining the mechanical integrity of above ground storage tanks (AST’s) is the focal point of tank inspection programs. Performing internal inspections is an integral part of a tank integrity program, however, deciding when to take a tank out of service to perform an internal inspection is not an easy determination to make.

Career Posting
Flint Hills Resources, LLC (http://www.fhr.com/) operates oil refineries and chemical plants across North America. Our Port Arthur, TX chemical plant is hiring an Inspector to join their Mechanical Integrity team. Our chemical plant is poised for extensive growth due to expansions on site.

Blog
August 5, 2013, Marc McConnell
At PinnacleAIS, we often get requests for a Senior API Inspector. But what does that mean exactly? What qualifications are required? Is there a test or a certification that provides the end user with assurance they are getting a higher caliber inspector or inspection service? Often there are different ideas of what comprises a "Senior" Inspector.

Blog
July 15, 2013, John Reynolds
This week’s post takes up right where last week’s post left off in our discussion on Corrosion Management and Control (CM&C) Management Systems. As I have said previously, this information is based off a series of articles I did on PEI&R MS, which you can reference here. Here are the last two Corrosion Management and Control Management Systems.

Inspectioneering Journal
By John Reynolds at Intertek
A new API Individual Certification Program (ICP) will be offered soon to certify inspectors who perform quality assurance (QA) surveillance and inspection activities on new materials and equipment for the energy and chemical (E&C) industry. It is being developed by the API with the assistance of numerous, experienced subject matter experts (SMEs) involved in source inspection activities.

Inspectioneering Journal
By P.E. Myers at Chevron Research & Technology Co.
Recently an unnecessary financial incident was caused as a result of an inadequate tank inspection and failure to recognize the hazards of rain entering leaking fixed roofs of storage tanks. A bolted bladder tank upgrade was scoped for miscellaneous repairs including a bladder replacement. The terminal requested a tank inspection but limited the inspection to only certain accessible portions of the tank. The job was then scoped and cost estimated. Later additional funds had to be allocated to fix unanticipated problems that the inspection failed to reveal. These problems included severe internal corrosion of the bladder ring and the entire second course, which now must be replaced, but which was unanticipated after the tank had been inspected and the job cost estimated.

Inspectioneering Journal
By Philip Myers at Chevron Texaco
One of the most important steps involved with regard to tank inspection, using API Standard 653, is establishing the internal inspection interval. API 653 says, "Section 6.4.1.1 Internal inspection is primarily required to: a. Ensure that the bottom is not severely corroded and leaking. b. Gather the data necessary for the minimum bottom and shell thickness 1 assessments detailed in Section 6. As applicable, these data shall also take into account external ultrasonic measurements made during in-service inspections (see 6.3.3).........."

Inspectioneering Journal
By Roland A. Goodman at American Petroleum Institute
The API Subcommittees on Inspection and Pressure Vessels & Tanks are ever vigilant in keeping up with current trends and state-of-the-art technology for in-service inspection of pressure vessels, process piping, and aboveground storage tanks. One result of this effort is the recognition of risk-based inspection (RBI) methods by the API inspection codes (API 510, 570, and 653) as valid methodology for developing an inspection strategy.

Inspectioneering Journal
By P.E. Myers at Chevron Research & Technology Co.
This case study is an example of an incident that started with a routine API 653 inspection and resulted in a very difficult repair to a tank bottom contaminated with hydrocarbons on the underside. This case highlights the potential risks with performing tank inspections and the consequences of poor inspection practices.

Inspectioneering Journal
By Steven L. Braune, P.E. at AEC Engineering, Inc.
Since the publication of API Standard 653, Tank Inspection, Repair, Alteration and Reconstruction in early 1991 it has gained wide acceptance within the petroleum and chemical industries. In addition, six states (Alaska, Arkansas, Florida, Pennsylvania, Virginia and Washington) have referred to or incorporated API-653 into their petroleum AST regulations. At the very least, API-653 has become the new buzz word throughout the industry and the phrase "inspected in conformance with API-653" is tossed around freely in most inquiries for inspection services.

AIM Programs: Incorporation of all the Disciplines that Impact the Integrity of Infrastructure and Equipment
Partner Content
The goal of asset management is to effectively manage corporate assets in order to gain maximum value, profitability and returns, while safeguarding personnel, the community, and the environment. A true Asset Integrity Management program incorporates...

AIM Programs: Incorporation of all the Disciplines that Impact the Integrity of Infrastructure and Equipment
Partner Content
The goal of asset management is to effectively manage corporate assets in order to gain maximum value, profitability and returns, while safeguarding personnel, the community, and the environment. A true Asset Integrity Management program incorporates...