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FOREWORD

This document is intended to provide the reader with a background in leak detection technologies for aboveground storage tanks in petroleum service. This document was developed by Vista Research, Inc. under the guidance of the API Leak Detection Workgroup and the API Storage Tank Task Force. The document incorporates information on leak detection technologies from API's research and from the experience of workgroup members. While an attempt has been made to discuss the main types of leak detection methods, the reader should recognize that there may be other forms of leak detection not discussed in this publication. The reader should also be cautioned that claims made by leak detection vendors should be carefully evaluated and that API does not endorse any of the leak detection technologies discussed in this publication.

API publications may be used by anyone desiring to do so. Every effort has been made by the Institute to assure the accuracy and reliability of the data contained in them; however, the Institute makes no representation, warranty, or guarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss or damage resulting from its use or for the violation of any federal, state, or municipal regulation with which this publication may conflict.

Suggested revisions are invited and should be submitted to the director of the Health and Environmental Affairs Department, American Petroleum Institute, 1220 L Street, N.W., Washington, D.C. 20005.