Field Data of an E-RTTM Based Leak Detection System

摘要

Field test data are described for two pipelines that use KROHNE's PipePatrol E-RTTM. The first application shows how a 1% leak in a transiently operated gas pipeline is found in 5 minutes. The second application shows how a 1.5% leak in a multi-product liquid line is detected within 1 minute and located and quantified within 4 minutes.rnCombining RTTM technology with leak pattern recognition, resulting in an E-RTTM approach, minimises the number of false alarms. The gas pipeline has experienced one false leak alarm since start-up early in 2003. The liquid application was commissioned only recently and has not yet seen any false leak alarms. A similar multi-product liquid application (although using orifice plates instead of ultrasonic flowmeters) has seen less then 1 false alarm per year since commissioning in 2001.