本推荐规程涵盖了设计用于在大气压至15 psig压力下运行的常压和低压储罐的检查。本文件包括检查原因、检查频率和方法、维修方法以及记录和报告的编制。本推荐规程旨在补充API标准653，该标准涵盖了储罐投入使用后保持其完整性的最低要求。

This recommended practice covers the inspection of atmospheric and low-pressure storage tanks that have been designed to operate at pressures from atmospheric to 15 psig. This document includes reasons for inspection, frequency and methods of inspection, methods of repair, and preparation of records and reports.This recommended practice is intended to supplement API Standard 653, which covers the minimum requirements for maintaining the integrity of storage tanks after they have been placed in service.