Record Display for the EPA National Library Catalog

RECORD NUMBER: 14 OF 21

OLS Field Name OLS Field Data
Main Title Pressure and Temperature Fluctuations in Underground Storage Tank Pipelines Containing Gasoline.
Author Maresca, J. W. ; MacArthur, M. P. ; Regalia, A. ; Starr, J. W. ; Wilson., C. P. ;
CORP Author Vista Research, Inc., Mountain View, CA.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher c1990
Year Published 1990
Report Number EPA-68-03-3409; EPA/600/J-90/519;
Stock Number PB91-206912
Additional Subjects Leak detectors ; Pipelines ; Underground storage ; Tanks ; Subsurface structures ; Gasoline ; Models ; Pressure gradients ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-206912 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 09/04/1991
Collation 30p
Abstract
A common method of detecting a small leak in a pressurized underground storage tank pipeline system containing petroleum is to monitor the pressure in the line. A leak is declared if the pressure drops below a specified threshold pressure. Small changes in the temperature of the product in the line also produce large changes in pressure which can easily exceed those of a small leak. The paper presents theoretical models to predict the pressure changes associated with leaks and product temperature changes in pressurized pipelines. These models have been validated in experiments at retail petroleum facilities and the EPA's UST Test Apparatus. The magnitude of the product temperature changes that can be expected during a pressure test at a retail station is predicted from a heat conduction model. The model includes the effects of product delivery and product dispensing and uses experimentally determined values of thermal diffusivity for the product in the pipeline and for the gravel and soil around the pipeline.