The Examination Method And Safety Evaluate Of Oil And Gas Transmission Pipeline

Compare with other ways use pipeline transportation oil and gas have a lot ofadvantages,for example cost low, great capacity conveyance, circulate stability etc, havealready become the main form that the oil and gas transports. The oil and gas transmissionpipeline exit many safeties question from corrosion and outside stress of the surroundingenvironment, because being covered up to an underground over a long period of time.Through examination and safe evaluation to oil and gas transmission pipeline can beanalysis in fact border condition that metered and settle sexual, advancing clearance thesafe factor of concealing in the pipeline. This article analysis the factor that cause oil andgas transmission pipeline failure; put forward the suitable examination method fordifferent piping characteristics, and field test with Qian’an-Bbaodi pipe of Qin Jingpipeline for the example; carried on safe evaluation to the Qian’an-Bbaodi pipe of QinJing oil pipeline and gas inflation compressor piping from the some TE-A1403, the endput forward the repair project to the Qian’an-Bbaodi Chaobaihe pipe of Qin Jing pipeline.First, introduced a few kinds the main factor that arouse the oil and gas transmissionpipeline safe trouble. Analyzed the proportion of outside stress, corrode, weld and materialblemish, equipment and operation and other five factor caused the oil and gas transmissionpipeline trouble in the former Soviet Union, Europe, The United States and our country.Point out outside stress, corrosion and material blemish are the most factors that results inthe oil and gas transmission pipeline safe trouble.Second, introduced the outside and inside examine technique of the oil and gastransmission pipeline, used three axis magnetic flux leakage examine machine andgeometric examine machine carried out inside examine, get the piping blemish statisticscharacteristic, include blemish characteristic and distribute position for example metal lossand girth weld blemish and spiral weld and sunken etc.The end, evaluates on the field of oil, gas pipeline safety use the detection methodand the evaluation criteria. Made sure concrete position of Qianan-Baodi oil pipeline ofQin Jing pipeline manufacture blemish and corrode blemish and weld blemish and put forward explicit repair suggestion; analyzed operating work condition, installing workcondition and inflating work condition safety of field some TE-A1403gas inflationcompressor piping, another, analyzed the pipeline stress influence from the pressurechange, temperature change and subside, get the piping dangerous part and evaluate result;put forward the repair plan and repair to the exist blemish of Chaobaihe pipe acrosssection of Qin Jing pipeline after the safe evaluation, in order ensure the safe operation ofthe Qin Jing pipeline.