工艺管线气密试验程序

PNEUMATICLEAKAGETESTPROCEDURE工艺管线气密试验程序编号Ref.No:NH-HDPE+PP-WPR-212Plant:PP+HDPEContractor:TISAREV：AClient:CSPCSubcontractor:CP6CCPage1of3CONTENTS目录Scope范围Reference参考文件TestPressure试验压力TestConditions试验条件TestProcedure试验程序Safety人身安全RevisionNote修订注释PNEUMATICLEAKAGETESTPROCEDURE工艺管线气密试验程序编号Ref.No:NH-HDPE+PP-WPR-212Plant:PP+HDPEContractor:TISAREV：AClient:CSPCSubcontractor:CP6CCPage2of3Scope范围ThisprocedurecoversthepneumaticleakagetestofprocesspipinginPP+HDPEplant.本程序适用于南海石化项目PP+HDPE装置中设计或规范规定的工艺管道气体泄漏性试验。Reference参考文件PR-8710-0000-0067管道工程试压试漏ASMEB31.3工艺管道TestPressure试验压力TestPressureisconformtoASMEB31.3.试验压力为ASMEB31.3规定的压力。TestConditions试验条件Testschemethatincludessafetymeasureshouldbepreparedbeforetheleakagetest.泄漏性试验前必须编制试验方案，方案中必须包含有切实可行的安全技术措施。Thepneumaticleakagetestshallbeperformedafterhydrotestofpipingsystemisacceptedandpurgingdoneclean.气漏试验应在管道系统压力试验合格且冲洗干净并复位后进行。Morethantwopressuregaugesthathavebeencalibratedmustbeusedintestingsystem.Thecalibrationgradeshouldnotbelessthan1.5.Therangeofthegaugenormallyis1.5-2timesofthemaximumtestingpressure.在试验中应使用至少2个压力表并已完成校验。在标定后的计量表的准确性不低于1.5级。计量表的标定值一般为最大压力的1.5—2倍。TestProcedure试验程序Thepressureshallriseslowlyuntilitreachesto50%ofthetestpressureatthefirststageandthenstoptocheckallweldingseams,valvesandflangeswhetherthereareleaksandabnormalphenomenaornotinthesystem.Thecheckingdurationshalllastatleast10minutes.在第一阶段试验中，压力应慢慢上升直到测试压力的50％停止，然后检查所有的阀门和法兰是否泄漏和异常现象或不在系统中。检查时间应持续至少10分钟。PNEUMATICLEAKAGETESTPROCEDURE工艺管线气密试验程序编号Ref.No:NH-HDPE+PP-WPR-212Plant:PP+HDPEContractor:TISAREV：AClient:CSPCSubcontractor:CP6CCPage3of3Continuepressurizingat10%ofthetestpressureeachtimeuptofinaltestpressureandthepressureshallbeheldforthree(3)minutesateachstageofincrease.Whenthepressurereachestothefinaltestpressure,thepressureshallbeheldforfive(5)minutestocheckthatthereispressuredropinthepipingandadequateconcentrationofsoapsolutionshallbeappliedtocheckallwelds,valvesandflanges.Iftherearenoleaksinthesystem,thetestshallbeacceptedafterchecking.每次以10％的试验压力连续加压直到最后的测试压力，而且压力应在每增加一步保持3分钟。当达到最终压力时应保持5分钟，要检查在管线中压力是否下降，用足够的肥皂水检查所有的阀门和法兰是否泄漏。在检查后如没有泄漏，试验通过。Therepairactivitiesshallbedoneafterthepressureisthoroughlydischargedfromthesystem.Repairsonapressurizedsystemarenotallowedtobedoneandretestshallnotbeperformedwithpressurizationuntilrepairsaresatisfactory.所有泄漏应予以修理，修理活动应在系统完全卸压后进行。不得进行带压修理，只有修理完成后才能进行重新试验。6Safety人身安全6.1Anyimpactstothepipingsystemduringthepneumaticleaktestisgoingonisnotpermitted.在管线气漏试验进行时不允许对管线有任何碰撞。Pressureshallbeslowlydischargedafterthetestisaccepted.Thedischargeholeshallbefirmlyweldedandhaveisolatedareawherepeopleseldompassby.在试验通过后压力应慢慢释放。释放孔应被焊接固定，而且释放区不允许人通过。7RevionNote修订注释Thisproc