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Title: Testing An Underground Storage Tank And Product Handling System
Author: George S. Lomax
Source: American Gas Association 1987
Year Published: 1987
Abstract: Tfesting an underground storage tank and product handling system begins with a good general knowledge of the storage system being tested, the environment in which the system operates, and the test method being used. This paper will address problem areas related to the mechanics of an underground storage system, environmental factors that affect tank volume during an integrity test, and the necessary components of a valid tank tightness test. To better understand some of the problems encountered with the mechanical components of a product handling system, it is necessary to review selected components of what would be considered the perfect tank. Entrapped vapor or air in a vessel or the associated piping can be a major cause of inaccurate test results. The perfect tank should be level and have an opening to the vent line or fill pipe at either end to prevent the entrapment of any volume of air or vapor and to allow any amounts of air or vapor that could remain in the tank, after fill-up, to go to the atmosphere.

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