工藝管線氣密試驗(yàn)程序

PNEUMATICLEAKAGETESTPROCEDURE工藝管線氣密試驗(yàn)程序編號Ref.No:NH-HDPE+PP-WPR-212Plant:PP+HDPEContractor:TISAREV：AClient:CSPCSubcontractor:CP6CCPage1of3CONTENTS目錄Scope范圍Reference參考文件TestPressure試驗(yàn)壓力TestConditions試驗(yàn)條件TestProcedure試驗(yàn)程序Safety人身安全RevisionNote修訂注釋PNEUMATICLEAKAGETESTPROCEDURE工藝管線氣密試驗(yàn)程序編號Ref.No:NH-HDPE+PP-WPR-212Plant:PP+HDPEContractor:TISAREV：AClient:CSPCSubcontractor:CP6CCPage2of3Scope范圍ThisprocedurecoversthepneumaticleakagetestofprocesspipinginPP+HDPEplant.本程序適用于南海石化項(xiàng)目PP+HDPE裝置中設(shè)計或規(guī)范規(guī)定的工藝管道氣體泄漏性試驗(yàn)。Reference參考文件PR-8710-0000-0067管道工程試壓試漏ASMEB31.3工藝管道TestPressure試驗(yàn)壓力TestPressureisconformtoASMEB31.3.試驗(yàn)壓力為ASMEB31.3規(guī)定的壓力。TestConditions試驗(yàn)條件Testschemethatincludessafetymeasureshouldbepreparedbeforetheleakagetest.泄漏性試驗(yàn)前必須編制試驗(yàn)方案，方案中必須包含有切實(shí)可行的安全技術(shù)措施。Thepneumaticleakagetestshallbeperformedafterhydrotestofpipingsystemisacceptedandpurgingdoneclean.氣漏試驗(yàn)應(yīng)在管道系統(tǒng)壓力試驗(yàn)合格且沖洗干凈并復(fù)位后進(jìn)行。Morethantwopressuregaugesthathavebeencalibratedmustbeusedintestingsystem.Thecalibrationgradeshouldnotbelessthan1.5.Therangeofthegaugenormallyis1.5-2timesofthemaximumtestingpressure.在試驗(yàn)中應(yīng)使用至少2個壓力表并已完成校驗(yàn)。在標(biāo)定后的計量表的準(zhǔn)確性不低于1.5級。計量表的標(biāo)定值一般為最大壓力的1.5—2倍。TestProcedure試驗(yàn)程序Thepressureshallriseslowlyuntilitreachesto50%ofthetestpressureatthefirststageandthenstoptocheckallweldingseams,valvesandflangeswhetherthereareleaksandabnormalphenomenaornotinthesystem.Thecheckingdurationshalllastatleast10minutes.在第一階段試驗(yàn)中，壓力應(yīng)慢慢上升直到測試壓力的50％停止，然后檢查所有的閥門和法蘭是否泄漏和異常現(xiàn)象或不在系統(tǒng)中。檢查時間應(yīng)持續(xù)至少10分鐘。PNEUMATICLEAKAGETESTPROCEDURE工藝管線氣密試驗(yàn)程序編號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％的試驗(yàn)壓力連續(xù)加壓直到最后的測試壓力，而且壓力應(yīng)在每增加一步保持3分鐘。當(dāng)達(dá)到最終壓力時應(yīng)保持5分鐘，要檢查在管線中壓力是否下降，用足夠的肥皂水檢查所有的閥門和法蘭是否泄漏。在檢查后如沒有泄漏，試驗(yàn)通過。Therepairactivitiesshallbedoneafterthepressureisthoroughlydischargedfromthesystem.Repairsonapressurizedsystemarenotallowedtobedoneandretestshallnotbeperformedwithpressurizationuntilrepairsaresatisfactory.所有泄漏應(yīng)予以修理，修理活動應(yīng)在系統(tǒng)完全卸壓后進(jìn)行。不得進(jìn)行帶壓修理，只有修理完成后才能進(jìn)行重新試驗(yàn)。6Safety人身安全6.1Anyimpactstothepipingsystemduringthepneumaticleaktestisgoingonisnotpermitted.在管線氣漏試驗(yàn)進(jìn)行時不允許對管線有任何碰撞。Pressureshallbeslowlydischargedafterthetestisaccepted.Thedischargeholeshallbefirmlyweldedandhaveisolatedareawherepeopleseldompassby.在試驗(yàn)通過后壓力應(yīng)慢慢釋放。釋放孔應(yīng)被焊接固定，而且釋放區(qū)不允許人通過。7RevionNote修訂注釋Thisproc