壓力容器水壓試驗

1HYDROSTATICPRESSURETESTPROCEDURE水壓試驗程序General概述AllcompletedvesselsfabricatedinaccordancewithGB150-1998shallsatisfactorilypasspressuretest.按GB150-1998?鋼制壓力容器?要求制造的壓力容器在完成后應(yīng)水壓試驗合格。Ahydrostatictestshallbeconductedonallvesselsafterallfabricationhasbeencompleted,exceptforoperationwhichcouldnotbeperformedpriortothetestsuchasweldandpreparation,cosmeticgrindingonthebasematerialwhichdoesnotaffecttherequiredthickness.除了不能預(yù)先進(jìn)行的焊縫外表、母材外表上不影響要求的厚度的外觀打磨處理，水壓試驗必須在容器制造完畢，總體檢查合格后進(jìn)行。除了焊接、準(zhǔn)備工作以及在母材外表進(jìn)行的不影響要求厚度的外觀打磨處理不能預(yù)先進(jìn)行之外，水壓試驗必須在容器制造完畢后進(jìn)行。Ahydrostatictestshallbeconductedonallvesselsafterallexaminationshavebeenperformed,exceptthoserequiredafterthetest.壓力容器必須全部制造完成并經(jīng)檢查合格后，方可進(jìn)行水壓試驗。AllhydrostatictestprocessshallconformtotherequirementsofGB150-1998andtherequirementsofSUPERVISIONREGULATIONSONSAFETYTECHNOLOGYOFPRESSUREVESSEL水壓試驗程序應(yīng)符合GB150-1998?鋼制壓力容器？和？壓力容器平安技術(shù)監(jiān)察規(guī)程?的要求。.實用文檔.Pressureindicatinggagesusedinthepressuretestmustbeinaccordancewiththefollowingrequirements:水壓試驗用壓力表不許符合以下要求：Pressureindicatinggageshallbeconnecteddirectlytothevessel.Iftheindicatinggageisnotreadilyvisibletotheoperatorcontrollingthepressureapplied,anadditionalindicatinggageshallbeprovidedwhereitisvisibletotheoperatorthroughoutthedurationofthetest.壓力表不許直接與容器連接。如果容器上設(shè)置的壓力表不能被壓力控制操作人員很容易的看到，那么應(yīng)在操作者能夠明顯清晰的部位增加一個壓力表，以便于進(jìn)行全過程的壓力控制。Pressureindicatinggagesusedintestingshallhavearangeoveraboutdoubletheintendedmaximumtestpressure,butinnocaseshalltherangebelessthan1.5normorethan3timestestpressure.壓力表的量程一般應(yīng)為最大試驗壓力的2倍，在任何情況下都不能超過試驗壓力的1.5?3倍。壓力表量程不得少于試驗壓力的1.5倍，不得高于試驗壓力的3倍。Allgagesshallbecalibratedagainstastandarddeadweighttesteroracalibratedmastergage.Gagesshallberecalibratedatanytimewhenthereisreasontobelievethattheyareinerror.Thegagesshallbeusedwithintheeffectiveperiodofsixmonths.所有試驗用的壓力表應(yīng)采用壓力表試驗器或經(jīng)校準(zhǔn)的校準(zhǔn)用精密儀表進(jìn)行校驗。無論何時發(fā)現(xiàn)試驗用的壓力表存在問題，都應(yīng)重新進(jìn)行校驗。壓力表校驗合格后的使用有效期為6個月。Allreinforcingpadweldshallbetestedbyairtighttestandnoleakagebefoundformanyjoints.ThevalueofairtightshallbebetweenPaandPa..實用文檔.容器上的補強圈應(yīng)通入0.4?0.5MPa的壓縮空氣對所有焊縫連接部位進(jìn)行氣密性檢查合格。PreparationforTesting試驗準(zhǔn)備Ventsshallbeprovidedatallhighpointsofthevesselinthepositioninwhichitistobetestedtopurgepossibleairpocketswhilethevesselisbeingfilled.容器頂部所有高點都應(yīng)設(shè)置排氣口，以便于充水過程中將容器內(nèi)部的空氣排放干凈。Priortohydrostaticpressuretest,theinsideandoutsideofthevesselshouldgiveagoodcleaningtoremoveoil,grease,paintandotherdirt.Theexaminedareaoftheinsideandoutsideofthevesselshallbekeptclean,withoutanydirtwhichinfectsthetest.Thesurfacemustbedried.InternalInspectionReportshouldbesubmittedforapprove.水壓試驗前，容器內(nèi)、外應(yīng)清理干凈，去除所有的油污、鐵銹等污垢。試驗過程中所有試驗范圍內(nèi)的容器內(nèi)、外外表應(yīng)保持干凈，沒有影響試驗的污物。容器的外外表必須保持枯燥。容器內(nèi)部檢查報告應(yīng)提交批準(zhǔn)。Beforeapplyingpressure,thetestequipmentshallbeexaminedtoseethatitistightandthatalllowpressurefillinglinesandotherappurtenancesthatshouldnotbesubjectedtothetestpressurehasbeendisconnected.水壓試驗前，應(yīng)檢查試驗設(shè)備是否連接緊固，檢查所有不屬于試驗系統(tǒng)的低壓填充物及其它附屬物是否已經(jīng)別離。Beforeapplyingpressure,thetemperatureofthetestmediumandthewalltemperatureofthevesselshallbemeasuredwiththethermometer.Thetestpressureshallbeappliedafterthevesselanditscontentsareataboutthe.實用文檔.sametemperature.水壓試驗前，應(yīng)采用溫度計測量試驗液體和容器器壁的溫度。當(dāng)容器壁溫與試驗液體溫度一致時，方可對容器進(jìn)行加壓。Duringtestingthetemperatureofthevesselandtestmediumshallnotbelowerthan5℃normorethan40℃.水壓試驗期間，容器器壁和試驗液體的溫度應(yīng)控制在5?40℃之間。Temperaturerecordshallmeasurethetestmediumtemperaturenottheairtemperature.Hydrotestingwatershallbeclean,freshwater.溫度應(yīng)測量試驗液體的溫度而非氣溫。試驗液體應(yīng)是干凈、新鮮的水。Thereinforcementplatesoutsidethevesselsandtheweldoftheconnectingpipeshallpasstheleaktestingbeforedoingpressuretest.水壓試驗前，容器的補強圈與容器殼體、接管的焊縫應(yīng)經(jīng)氣密性檢查合格。Priortohydrostaticpressuretest,blastingandpaintingworkshallnotbecarriedout.水壓試驗前不允許進(jìn)行噴砂涂漆工作。Serviceboltsandgasketsshallnotbeusedforhydrostaticpressuretesting.Aftertestserviceitemswillbereinstalled.水壓試驗用螺栓、墊片等不能使用正式的設(shè)備用部件，水壓試驗合格后應(yīng)方可安裝正式螺栓、墊片。Thereshallbeatleastonehighpoint&onelowpointpressuregaugepervessel.容器上至少在頂部和底部各設(shè)置一個壓力表。StandardHydrostaticTest標(biāo)準(zhǔn)的水壓試驗TestPressure試驗壓力.實用文檔.Forinternalpressurevessel,thetestpressureshallbeatleastequaltoPTateverypointinthevessel.承受內(nèi)壓的容器，容器內(nèi)部任何部位的試驗壓力應(yīng)大于等于Pt。Pfmin.)=1.25P(2)min.T SDWhere:PT(min.)=minimumtestpressure最小試驗壓力，MPaP=designpressure設(shè)計壓力，MPaST=thestressvalueforthetesttemperatureonthevessel試驗溫度下的許用應(yīng)力，MPaSD=thestressvalueforthedesigntemperatureonthevessel設(shè)計溫度下的許用應(yīng)力，Mpa(Sr.)min.=thelowestratio(forthematerialsofwhichthevesselisSDconstructed)ofthestress許用應(yīng)力的最小比值〔容器所使用的材料〕ApplicationofPressure試驗過程Thetestpressureshallbegraduallyincreaseduntiltherequiredtestpressureisreachedandheldforaminimumofonehour.Thenthepressureshallbereducedtoavaluenotlessthanfour-fifthofthetestpressureandheldforasufficienttimetopermitinspectionofthevessel.壓力應(yīng)緩慢上升直至要求的試驗壓力后，保壓1小時。然后將壓力降至試驗壓力的80%，保持足夠的時間進(jìn)行檢查。Examination檢查Thevisualinspectionofthevesselshallbeperformedinaccordancewiththefollowingrequirements:Forthehydrostatictestthevisualinspectionofalljointsandconnections.實用文檔.inthevesselshallbemadeatapressureequaltofour-fifthoftherequiredtestpressure.Leakageisnotallowedatthetimeoft