关键词: 泄漏检测与修复, LDAR　基础信息, 统计, P&ID 图标识法

Abstract: LDAR basic information statistics is the prerequisite and basis for on-site detection, leakage repair, emission calculation, mathematical statistics and summary & improvement. The LDAR basic information statistical methods mentioned Leak Detection and Repair Work Guidelines for Petrochemical Enterprises include listing method, photo method and P&ID graph identification method. Domestic scholars have not conducted in-depth researches on P&ID graph identification method. Meanwhile, P&ID graph identification method has not been paid enough attention to and applied in enterprise work. In order to promote the development of LDAR work, a unit summed up the specific application of P&ID graph identification method. P&ID graph identification method includes three steps: rule making, module expression and drawing identification. P&ID graph identification method has the advantages of simplified component management, small statistical workload, clear and easy to understand, convenient on-site inspection and supervision inspection and so forth.

Key words: leak detection and repair (LDAR), LDAR basic information, statistics, P&ID icon identification method