API RP 1639

Abstract

<strong>Purpose and Scope</strong> <br>This Recommended Practice (RP) is designed to provide guidance to owners and operators of gasoline dispensing facilities (GDF) to effectively operate and maintain Stage I and Stage II vapor recovery systems. This guide does not address the maintenance required by qualified service technicians to perform periodic testing and major system repairs. Federal and/or State regulatory agency certified or approved vapor recovery systems/equipment must be used to maintain the efficiency of the vapor recovery system. The appropriate state and/or locality should be contacted individually for sitespecific requirements. <br>This RP recommends the need for periodic inspections of Stage I and Stage II equipment. The equipment and the criteria for inspection are identified in highlighted text with a corresponding letter that indicates the frequency of the inspection. That is, a <strong>( D )</strong> represents a recommendation for a daily inspection; <strong>( W )</strong> recommends a weekly inspection; <strong>( M )</strong> recommends a monthly inspection; and <strong>( A )</strong> recommends an annual inspection. Appendix A is a suggested inspection checklist for the equipment and criteria identified in the text.