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Volumetric testing of USTs has grown exponentially in recent years, stimulated by regulation and by increasing business sensitivity to potential liabilities from leaking tanks. This paper attempts to lay an intellectual groundwork for discussion of such systems and focuses on the objectives of leak detection and the role of measurement precision. The important methodological issues of identifying and discriminating among sources of apparent volume changes which are not related to leakage, and the analysis and interpretation of test results will also be addressed.
volumetric leak detection, leak detection, measurement accuracy, precision, leak rate, probability of detection, probability of false alarm, error, statistical inventory analysis, automatic tank gauge
President, Warren Rogers Associates, Inc., Middletown, RI