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Title:RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDS

RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDS

對(duì)接焊縫射線檢測(cè)工藝規(guī)程

CONTROLLED在控本口

UNCONTROLLED非在控本□

COPYNO副本編號(hào)：

PREPAREDBY編制：DATE日期：

REVIEWEDBY審核：DATE日期:

APPROVEDBY升匕準(zhǔn):DATE日期:

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Title:RADIOGRAPHICEXAMINATIONPROCEDUREFORBUTTWELDS

1.General1.概述

1.1Thisprocedureisappliedtothex-rayradiographicexamination1.1本工藝規(guī)程適用于按ASME規(guī)

ofbuttweldsforpressurevesselsconstructedinaccordancewith范第VIII卷第1冊(cè)要求制造的壓力容器

的對(duì)接焊縫的x射線照相檢測(cè)。

ASMECodeSectionMilDivl.

1.2必要時(shí)，本工藝規(guī)程應(yīng)由探傷作

1.2Thisprocedureshallbesupplemented,whennecessary,withthe業(yè)指導(dǎo)書進(jìn)行補(bǔ)充以規(guī)定更詳細(xì)的變

examinationinstructionsdefiningmorespecificvariables,whichwill量，此指導(dǎo)書由NDEIII級(jí)人員編制。

bepreparedbyNDELevelIIIpersonnel.2.檢測(cè)人員資格

2.QualificationofExaminationPersonnel2.1從事射線探傷的檢測(cè)人員必須按

2.1Anypersonengagedintheradiographicexaminationshallbe南京寶色鈦業(yè)有限公司的<<NDE人員

qualifiedandcertifiedasaradiographicexaminerinaccordancewith培訓(xùn)、考試、資格鑒定和認(rèn)證實(shí)施細(xì)

NJBSTCo.,Ltd/sWrittenPracticeforNDEPersonnelTraining,則>>(文件號(hào)：QCD-0")進(jìn)行資格考核

Examination,QualificationandCertification'XNO.:QCD-011).評(píng)定。

2.2TheNDELevelIshallreceivethenecessaryinstructionor2.2NDEI級(jí)須接受合格的II級(jí)或III

supervisionfromacertifiedNDELevelIIorLevellHExaminer.級(jí)必要的指導(dǎo)或監(jiān)督。NDEI【級(jí)須接受

TheNDELevelIIshallreceivetheinstructionorsupervisionfromaNOBIII級(jí)的指導(dǎo)或監(jiān)督。

NDELevelIIIExaminer.2.3根據(jù)各自的職責(zé)范圍，所有檢測(cè)

2.3Accordingtotherespectiveresponsibilityrange,allexaminers人員應(yīng)按ASME規(guī)范有關(guān)卷，標(biāo)準(zhǔn)和作

shallcompletetheexaminationconformingtothereferencingASME業(yè)指導(dǎo)書進(jìn)行檢測(cè)并保證工作質(zhì)量。

CodeSections,standardsandwritteninstructions.Theyshallassure3.設(shè)備、器材

theworkingquality.II級(jí)人員所選用的設(shè)備、器材應(yīng)能保

3.Equipment,ToolsandMaterials證符合下列條件和探傷作業(yè)指導(dǎo)書

TheLevelIIExaminershallselecttheequipment,toolsand的要求。

materialstoassurethattheyareincompliancewiththefollowing3.1X射線設(shè)備應(yīng)從表1中選用。

conditionsandtherequirementoftheexaminationinstruction.

3.1Oneofthex-rayequipmentshallbeselectedfromTabic1.

Table1

Max.TubeMax.TubeFoe.SizePermittedmax.materialthick(mni)

TypeMfr.

Voltabe(KVp)Current(mA)(mm)SteelTiZr

xx-2505Beijing25052x2386322

xx-3005Dandong30051.0x2.3467()28

表1

最大管電壓最大管電流焦點(diǎn)尺寸允許的材料最大穿透厚度mm

類型制造廠家

KVpmA(mm)SteelTiZr

xx-2505北京25052x2386322

xx-3005丹東30051.0x2.3467028

3.2Film3.2膠片

Filmselectionshallbeinaccordancewith膠片須根據(jù)SE-1815工業(yè)射線照相的膠片系統(tǒng)分類的標(biāo)

SE-1815,StandardTestMethodforFilmSystems準(zhǔn)測(cè)試方法來選擇。膠片分類表應(yīng)由膠片制造廠提供。膠

for片

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IndustrialRadiography.Theclassificationtableoffilmshallbe系統(tǒng)分為特殊、I,LIII,W-A,和W-Bo應(yīng)

providedbythefilmmanufacturer.FilmsystemclassesSpecial,根據(jù)X射線穿透厚度，五擇合適的膠片。

I,Il,Ill,W-A,andW-Barepermitted.Dependingonthex-ray采用雙片法時(shí)，應(yīng)選用兩種不同類型的膠

penetrationthickness,asuitablefilmshallbeselected.When片。

usingtwofilmsmethod,twodifferenttypesoffilmshallbe3.3增感屏

selected.從表2中選擇適當(dāng)?shù)你U增感屏。

3.3Screen

AsuitableleadscreenshallbeselectedfiomTable2.

Table2表2

ThicknessofleadScreen(mm)鉛增感屏厚度(mm)

TubeVoltageFrontBack管電壓前屏后屏

<150kv>0.05<150kv

0.01-0.030.01-0.03>0.05

I5Okv-3OOkv>0.05-0.10150-300k

0.025-0.100.025-0.10>0.05-0.1

V

3.4DensitometerandStepWedgeFilm3.4黑度計(jì)和階梯黑度片

ThedigitaldensitometerlistedinTable3shallbeusedfor用表3列出的數(shù)碼黑度計(jì)測(cè)定射線底片

judgingradiographdensity.Thedensitometershallbechecked密度。黑度計(jì)至少每90天由NDEII級(jí)或

againstacalibratedstepwedgefilmatleastonceevery90daysbyHI級(jí)用校驗(yàn)過的階梯黑度片校驗(yàn)一次。黑

theNDELevelIIorIIIExaminer.Thestepwedgefilmshallbe度片須至少每12個(gè)月由國家標(biāo)準(zhǔn)局校驗(yàn)

calibratedonceevery12monthsbytheNationalBureauof一次。

Standards.

Table3

表3

Mea.,型號(hào)制造廠測(cè)量范圍測(cè)量精度

ManufacturerMea.,Range

Precision

ZHEJIANG

TD-2100.00-4.00D±0.03DTD-210浙江甌海0.00-4.00D±0.03D

ZHENGHAI

3.5象質(zhì)計(jì)(IQI)

3.5ImageQualityIndication(IQI)3.5.1象質(zhì)計(jì)類型和材料

3.5.1TypeandmaterialofIQIs3.5.1.1應(yīng)使用線型象質(zhì)計(jì)(圖1和表4)。

3.5.1.1ThewiretypeIQIpresentedasFig.1andTab.4be線型象質(zhì)計(jì)的制造和標(biāo)識(shí)應(yīng)符合SE-747

used.ThewiretypeIQIshallbemanufacturedandidentifiedin的要求。

accordancewiththerequirementsinSE-747.3.5.1.2金屬絲的材質(zhì)應(yīng)與被透檢材料相

3.5.1.2Thewiresshallbefabricatedfrommaterialoralloywith同，或其射線吸收小十被檢材料。

sameorlessradiationabsorptionthanthematerialbeing

radiographed.

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Fig1圖1

MATERIALGROUPNUMBER

材質(zhì)標(biāo)碼

SETIDENTIFICATIONLETTER

組別標(biāo)碼

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Tabic4WireIQIDesignation,WireDiametersandWireIdentity表4線型IQI標(biāo)識(shí)和線徑

in.(nun)

Table4IQISetsandwireDiameter表4象質(zhì)計(jì)組別和線徑

WireDiametersin.(mm)線徑英寸（亳米）

SetAWireNo.SetBWireNo.A組線號(hào)AB組線號(hào)B

0.0032(0.08)10.010(0.25)60.0032(0.08)10.010(0.25)6

0.004(0.1)20.013(0.33)70.004(0.1)20.013(0.33)7

().005(0.13)30.016(0.4)80.005(0.13)30.016(0.4)8

0.0063(0.16)40.020(0.51)90.0063(0.16)40.020(0.51)9

0.003(0.2)50.025(0.64)100.008(0.2)50.025(0.64)10

0.010(0.25)60.032(0.81)110.010(0.25)60.032(0.81)11

SetCWireNo.SetDWireNo.C組線號(hào)CD組線號(hào)D

0.032(0.81)110.100(2.5)160.032(0.81)110.100(2.5)16

0.040(1.02)120.126(3.2)170.040(1.02)120.126(3.2)17

0.050(1.27)130.160(4.06)180.050(1.27)130.160(4.06)18

0.063(1.6)140.200(5.1)190.063(1.6)140.200(5.1)19

0.080(2.03)150.250(6.4)200.080(2.03)150.250(6.4)20

0.103(2.5)160.320(8)210.100(2.5)160.320(8)21

3.5.2IQISelection3.5.2IQI選用

3.5.2.1Thedesignatedessentialminimumwirediametershallbe3.5.2.1應(yīng)顯示的最小線徑必須按表5規(guī)

asspecifiedinTabic5定。

Table5IQISELECTION表5象質(zhì)計(jì)選用

SourceSideIQI射源側(cè)IQIFilmSideIQI膠片側(cè)IQI

Nominalsingle-wallMaterialThicknessEssentialWireEssentialWire

WireNo.WireNo.

Range,in(mm)DiameterDiameter

線號(hào)線號(hào)

單壁標(biāo)稱材料厚度范圍應(yīng)顯示的線徑應(yīng)顯示的線徑

in(mm)in(mm)in(mm

Upto0.25,incl.W0.25(W6.4)0.008(0.2)50.006(0.16)4

Over0.25thr.0.375>0.25~0.375(>6.4-9.5?0.010(0.25)60.008(0.2)5

Over0.375thr.0.5>0.375-0.5(>9.5-12.7)0.013(0.33)70.010(0.25)6

Over0.5(hr.0.75>0..5-0.75(>12.7-19.1)0.016(0.4)80.013(0.33)7

Over0.75thr,1.00>0.75~1.00(>19.1~25.4]0.020(0.51)90.016(0.4)8

Overl.OOthr.l.50>1.00~1.50(>25.4~38.1)0.025(0.64)100.020(0.51)9

Over1.50thr.2.00>1.5O~2.OO(>38.1?5080.032(0.81)110.025(0.64)10

3.5.2.2Forweldswithreinforcements,thethicknessonwhichthe352.2對(duì)有余高焊縫，象質(zhì)計(jì)放處的厚

IQIisbasedisthenominalsinglewallthicknessplustheestimated度是標(biāo)稱單壁厚度加上不超過第VD1卷第

weldreinforcementnottoexceedthemaximumpermittedbythe一分冊(cè)中允許的焊縫最大余高估計(jì)值。

SectionVlllDivision1.Forweldswithoutreinforcements,the沒有余高的焊縫，象質(zhì)計(jì)放處的厚度是標(biāo)

thicknessonwhichtheIQIisbasedisthenominalsinglewall稱單壁厚度。在以上兩種情況下，襯環(huán)或

thickness.Inbothcasesbackingringsorstripsshallnotbe襯帶均不作為焊縫厚度的一部分來考慮。

consideredaspartoftheweldthicknessinIQIselection.3.5.3象質(zhì)計(jì)的放置

3.5.3PlacementofIQIs353.1象質(zhì)計(jì)必須放在被檢工件的射

3.5.3.1TheIQI(s)shallbeplacedonthesourcesideofthepartbeing線源側(cè)。當(dāng)透照布置或結(jié)構(gòu)尺寸妨礙象質(zhì)

examined.WhenconfigurationorsizepreventsplacingtheIQI(s)onthepart計(jì)放在工件或焊縫上時(shí)，象質(zhì)計(jì)可放在一

orweld,theIQI(s)maybeplacedonaseparateblockincompliancewith個(gè)單獨(dú)的試塊（符合ASME第V卷

para.T-277.1ofSectionV.TheseparateblockshallbeplacedascloseasT-277.I要求）上。此試塊的放置應(yīng)

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possibletothepartbeingradiographed.盡可能靠近被檢的工件。

353.2WhereinaccessibilitypreventshandplacingtheIQI(s)onthe353.2用手無法將象質(zhì)計(jì)放在射

sourceside,theIQI(s)shallbeplacedonthefilmsideincontactwith源一側(cè)時(shí)，象質(zhì)計(jì)可放在與被檢工

thepartbeingexamined.Aleadletter"F"shallbeplacedadjacenttoor件接觸的膠片側(cè)。此時(shí)應(yīng)在象質(zhì)計(jì)

ontheIQI(s).上面或附近放一個(gè)鉛字“F”。

3.55.3TheIQI(s)shallbeplacedontheweldsothatthelengthofthe353.3象質(zhì)計(jì)放在焊縫上，應(yīng)使線

wiresisperpendiculartothelengthoftheweld.Theidentification長(zhǎng)與焊縫長(zhǎng)度方向垂直。

number(s)and,whenused,theleadletter"F"shallnotbeintheareaof3.5.4象質(zhì)計(jì)的數(shù)量

interest,exeptwhengeometricconfigurationmakesitimpractical.3.5.4.1一次曝光使用一個(gè)或多個(gè)

3.5.4NumberofIQIs膠片暗盒時(shí)，每張底片上應(yīng)至少有

3.5.4.1Whenoneormorefilmholdersareusedforanexposure,at一個(gè)象質(zhì)計(jì)的影像。

leastoneIQIimageshallappearoneachradiograph.354.2若有效評(píng)定區(qū)內(nèi)任一處的

3.5.4.2Ifthedensityoftheradiographanywherethroughtheareaof底片黑度超過線型象質(zhì)計(jì)應(yīng)顯最細(xì)

interestvariesbymorethanminus15%orplus30%fromthedensity絲附近黑度的-15%或+30%,即使在

adjacenttothedesignatedwireofawireIQI,withinthe規(guī)定的最小最大允許黑度范圍內(nèi)，

minimum/maximumallowabledensityrangesspecified,thenan仍應(yīng)在每一超標(biāo)區(qū)域增加一個(gè)象質(zhì)

additionalIQIshallbeusedforeachexceptionalareaorareasandthe計(jì)，重新攝片e

radiographretaken.354.3對(duì)于圓筒狀部件及球狀部

3.5.4.3Forcylindricalcomponentsorsphericalcomponentswherethe件，射線源放在部件中心位置時(shí)，

sourceisplacedatthecenterofthecomponentforasingleexposure,at進(jìn)行一次曝光，在工件上至少放三

leastthreeIQIs,spacedapproximately120deg.apart,arerequired.個(gè)象質(zhì)計(jì)，且要求大約每120°放一

3.5.5IQ1Sensitivity-個(gè)。

Radiographyshallbeperformedwithatechniqueofsuffcient3.5.5IQI靈敏度

sensitivitytodisplaytheessentialwireofawireIQI,whichisessintial射線照相方法應(yīng)有足夠靈敏度，要

indicationoftheimagequalityoftheradiograph.Theradiographsshall顯小出線型象質(zhì)計(jì)應(yīng)識(shí)別線徑。射

、r

alsodisplaytheidentifyingnumbersandletters.Iftheessentialwiredo線底片也應(yīng)顯示出識(shí)別數(shù)碼和字

notshowonanyfilminamultiplefilmtechnique,butdoshowin母。若多膠片法中的任何一張底片

compositefilmviewing,interpretationshallbepermittedonlyby上均未顯示出應(yīng)顯線徑，但可用疊

composilefilmviewing.合觀察法顯示出來。

3.6"B”Mark3.6“B”標(biāo)記

Aleadsymbol"B",withminimumdimensionsof13mminheightand每個(gè)膠片暗盒后背應(yīng)貼附一個(gè)至

1.6mminthickness,shallbeattachedtothebackofeachfilmholder少高13mm,厚1.6mm的鉛標(biāo)記“B”,

duringeachexposuretodetermineifbackscatterradiationisexposing以驗(yàn)證曝光過程中是否有背散射作

thefilm.用到膠片上。

3.7LocationMarkers3.7定位標(biāo)記

Theimageofthelocationmarkersforthecoordinationofthepartwith用于確定工件布片位置的定位標(biāo)

thefilmshallappearonthefilmwithoutinterferingwiththe記，其影象應(yīng)出現(xiàn)在膠片上，且不

interpretation,withsuchanarrangementthatisevidencethatcomplete得妨礙評(píng)片，以此證明透檢范圍已

coveragewasobtained.Locationmarkersshallbeplacedonthepart,完全覆蓋。定位標(biāo)記應(yīng)放在工件上,

notontheexposureholder/casselte.而不能放在暗袋或暗盒上。

3.7.1Single-WallViewing3.7.1單壁成像法

(a)SourceSideMarkers.Locationmarkersshallbeplacedonthe(a)射線源側(cè)標(biāo)記，透照下列工件

sourcesidewhenradiographingthefollowing:時(shí)，定位標(biāo)記須放在射源側(cè)：

(1)flatcomponentsorlongitudinaljointsincylindricalorcomical(1)平板焊縫，圓筒或圓錐形工件

componentswillbeaccordingtoFig..2.縱縫，見圖2。

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Sourcesidemarker

射源側(cè)標(biāo)記

D

t

D:Sourcetomaterialdistance

I：thicknessofworkpiece

D：射源至工件距離

Fig.2t:工件厚度

圖2

(2)curvedorsphericalcomponentswhoseconcavesideis(2)彎曲面或球面工件，其凹面朝著射

towardthesourceandwhenthe“source-to-material”線源，當(dāng)“射源至材料”距離小于工件

distanceislessthantheinsideradiusofthecomponent;內(nèi)半徑時(shí)；

(3)curvedorsphericalcomponentswhoseconvexsideis(3)彎曲面或球面工件，其凸面朝著射

towardthesource.線源。

(b)FilmSideMarkers.(b)膠片側(cè)標(biāo)記

(1)Locationmarkersshallbeplacedonthefilmsidewhen(1)當(dāng)透照凹面朝射源的曲面或球面工

radiographingeithercurvedorsphericalcomponentswhose件，且“射源至材料”的距離大力工件

concavesideistowardthesourceandwhenthe內(nèi)半徑時(shí)，定位標(biāo)記應(yīng)放在膠片側(cè)。

4tsourcc-to-matcriar,distanceisgreaterthantheinside(2)定位標(biāo)記不按3.7.1(a)放在射源側(cè)而

radius.放在膠片側(cè)時(shí)，要求底片上顯示的有效

(2)Asanalternativetosourcesideplacementin3.7.1(a),范圍超過定位標(biāo)記之外一定長(zhǎng)度(見圖3,

locationmarkersmaybeplacedonthefilmsidewhenthe即

radiograhpshowscoveragebeyondthelocationmarkersloLeff=(x+Mf+x)。

theextentdemonstratedbyFig.3,ie

Leff=(x+Mf+x)。

x=(t/D)(Mt72)

x=additionalrequiredcoverage,beyondfilmside

locationmarker

1=componentthickness

Mf=filmsidelocationmarkerinterval

D=sourcetocomponentdistance

x=(t/D)(Mf/2)

X：在膠片定位標(biāo)記兩側(cè)要求附加覆蓋范圍

t：工件厚度

定位標(biāo)記M「兩膠片側(cè)定位標(biāo)記之間的間距

LocationmarkerD：射源至工件表面距離

D

t

Mf

Fig.3圖3

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(c)EitherSideMarkers.(c)兩側(cè)均可標(biāo)記

Locationmarkersmaybeplacedoneitherthesourcesideor射線照曲面或球面工件，其凹面朝著射

filmsidewhenradiographingeithercurvedorspherical源，且“射源至工件”距離等于工件內(nèi)半

componentswhoseconcavesideistowardthesourceandthe徑時(shí)，則標(biāo)記可放在射源側(cè)，也可以放在

Utsourcc-to-matcriar,distanceequalstheinsideradiusofthe膠片側(cè)。

component.3.7.2雙壁成像法

3.7.2Double-wallviewing,atleastonelocationmarkershall雙壁成像時(shí)，在射源側(cè)表面焊縫附近(或

beplacedonthesourcesidesurfaceadjacenttotheweld(oron在有效區(qū)工件上)至少放一個(gè)定位標(biāo)記。

thematerialintheareaofinterest)foreachradiograph.3.8標(biāo)識(shí)

3.8Asystemshallbeusedtoproducepermanentidentification底片上應(yīng)有永久標(biāo)識(shí)，即合同號(hào)、部件

ontheradiographtraceabletothecontract,component,weld號(hào)、焊縫號(hào)或工件號(hào)等。

seam,orpartnumbers,asappropriate.Ontheradiograph,the下列永久性標(biāo)識(shí)應(yīng)明確無誤地顯示在底

followingshallbeplainlyandpermanentlyincludedandinany片上，旦不得干擾有效評(píng)定區(qū)。

case(hisinformationshallnotobscuretheareaofinterest.(1)南京寶色鈦業(yè)有限公司(NJBST)；

(1)NJBST(Coname)(2)JobNo.(2)工件號(hào)；

(3)WeldseamNo.(4)RadiographNo.(3)焊縫號(hào)(4)底片號(hào);

(5)Repairmark,ifapplicable(5)返修標(biāo)記；

(6)Locationmarkings(6)定位標(biāo)記；

(7)Thicknessofbasematerial(7)母材厚度；

(8)Dateofradiography(8)透照日期；

3.9FacilitiesforViewingofRadiographs3.9觀片設(shè)備

3.9.1Illuminatorusedtoviewradiographsshallbeverified3.9.1必須校驗(yàn)觀片設(shè)備燈是否有足夠

thatithassufficientintensitytobevisiblefortheessentialwire的光強(qiáng)觀看象質(zhì)計(jì)應(yīng)顯線徑，能否均勻地

diameterofIQIandcandiffusethelightuniformly.Whenthe擴(kuò)散燈光。當(dāng)?shù)灼∮谟^片燈屏尺寸或存

radiographissmallerthantheviewingportionofilluminatoror在低黑度區(qū)域時(shí)，應(yīng)遮檔多余光線。

willincludelowdensityareas,themasksshallbeprovidedto3.9.2為使底片透過光強(qiáng)至少為30cd/m2,

excludeanyextraneouslight.觀片燈應(yīng)有表6所示照明亮度。

3.9.2Inordertoobtainthenecessarybrightnessthroughthe

radiographatleast3()cd/m2,theviewingequipmentshallhave

thefollowingillumination:

表6

Table6

RadiographDensityMinimumIllumination底片黑度最小照明亮度

2.03,000cd/nr2.03,000cd/m2

3.030.000cd/m23.030,000cd/m2

4.0300,000cd/m24.0300,0000cd/m2

3.10ViewingRoom3.10觀片室

Subduedbackgroundlightingshallbeprovidedsuchthatthe應(yīng)提供柔和的背景光線，光線亮度不得

intensityshallnotcausetroublesomereflection,shadowsor在底片上產(chǎn)生有干擾作用的反射、陰影或

glaresontheradiograph.眩光。

4.CheckofSurfacetobeRadiographed4.被檢表面檢查

Priortostartingofradiographicexamination,the射線透照檢測(cè)前，RT人員必須

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Examinershallcheckorverifythatthesurfacetoberadiographed檢查或驗(yàn)證被檢表面是否滿足下述條

satisfiesthefollowingconditions:件：

4.1Thereinforcementofbuttweldedjointsiswithinthevalue4.1對(duì)接焊縫余高應(yīng)在第VID卷第1分

specifiedinSectionMHDivision1asshowninTable7冊(cè)規(guī)定的數(shù)值內(nèi)。

Table7表7

NominalMaximumReinforcement,in.最大余高in,(mm)

Thickness,in.(mm)CategoryB&CButtweldsOtherWelds

B和C類對(duì)接焊縫其它焊縫

Lessthan3/32(<2.4)3/32(<2.4)1/32(0.8)

3/32to3/16,incl.(2.4~4.8)l/8(3.2)1/16(1.6)

Over3/16tol/2Jncl.(>4.8-12.7)5/32(4.0)3/32(2.4)

Over1/2tol.incl.(>12.7-25.4)3/16(4.8)3/32(2.4)

Over1to2,incl.(>25.4-50.8)l/4(6.4)1/8(3.2)

Over2to3,incl.(>50.8~76.2)l/4(6.4)5/32(4.0)

Over3(o4,incl.(>76.2~101.6)l/4(6.4)7/32(5.5)

Over4to5,incL(>101.6-127)l/4(6.4)1/4(6.4)

Over5(>127)5/16(7.9)5/16(7.9)

GENERALNOTES:注：

(a)Fordoubleweldedbuttjoints,thislimitationona.對(duì)雙面對(duì)接焊縫，上列余高限值對(duì)焊

reinforcementgivenaboveshallapplyseparatelytobothinside縫內(nèi)外兩面均適用。

andoutsidesurfacesofthejoint.b.對(duì)單面對(duì)接焊縫上列余高限值僅適用

(b)Forsingleweldedbuttjoints,thereinforcementlimits于焊縫外面。

givenaboveshallapplytotheoutsidesurfaceofthejointonly.c.焊縫余高高度應(yīng)按被焊接T件較薄厚

(c)Thicknessofweldreinforcementshallbebasedonthe度取值。

thicknessofthethinnerofthematerialsbeingjoined.d.焊縫余高高度應(yīng)從對(duì)接表面的較高處

(d)Theweldreinforcementthicknessshallbedetermined定值。

fromthehigheroftheabuttingsurfacesinvolved.c.視需要，可去除焊縫余高。

(e)Weldreinforcementmayberemovedifsodesired.

4.2Anysurfaceirregularities,suchasweldripples,splashing,4.2任何表面不規(guī)則狀態(tài)，如焊波，飛濺、

undercutandsurfaceroughness,cannotmaskorbeconfused咬邊、表面粗糙度，不得掩蓋缺陷影象或

withtheimageofanydiscontinuity.與之相混淆。

5.SetupforExposure5.透照布置

LevelIorlevelIIindividualshallsetuptheequipment,I級(jí)和II級(jí)人員應(yīng)該根據(jù)探傷作業(yè)指導(dǎo)

toolsandmaterialsforexposureinaccordancewiththe書布置透照的設(shè)備，器材，使之滿足射線

examinationinstructionsoallrequirementsforradiographwill照相的所有要求。應(yīng)按9要求正確記錄布

bemet.Thesetupinformationshallbetrulyandclearly置數(shù)據(jù)。

recordedasdescribedinparagraph9.5.1膠片，象質(zhì)計(jì)和標(biāo)記的安放

5.1ArrangementofFilm.IQIandMarkers.5.1.1膠片暗盒，象質(zhì)計(jì)和標(biāo)記應(yīng)按圖4

5.1.1Filmcassette,IQIandmarkersshallbeplacedin放置。曝光操作者應(yīng)將指定的膠片仔細(xì)插

accordancewithFig.4.TheExaminerwhoperformsthe入暗盒，并在暗盒后背面貼上“B”標(biāo)記。

exposureshallcarefullyinsertthespecifiedfilmintocassette

andattachthe"B"markonitsback.

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1.Locationmarker1.定位標(biāo)記

2.NJBST(Co.Name).2.南京寶色鈦業(yè)有限公司(NJBST)

3.JobNo.3.工件號(hào)

4.WeldseamandradiographNo.4.焊縫號(hào)片號(hào)

5.Repairandtimemarker5.返修標(biāo)記及次數(shù)標(biāo)記

6.Locationmarker.6.定位標(biāo)記

7.IQI7.象質(zhì)計(jì)

8.Dateofradiography8.透照日期

9.Thicknessofbasematerial9.母材厚度

10."B”mark10.“B”標(biāo)記

11.X-raymachine11.X射線機(jī)

12.Film12.膠片

13.Backscatteredradiationshield13.背散射屏蔽板

5.1.2Ifthedensityoftheradiographanywherethroughthe5.1.2射線底片有效評(píng)定區(qū)內(nèi)任一點(diǎn)的

areaofinterestvariesbymorethan-15%or+30%fromthe黑度，大于指定要顯示的象質(zhì)計(jì)金屬絲附

densityadjacenttothedesignatedwireofawireIQIwithinthe近黑度-15%或+30%時(shí)，盡管此黑度落在

minimumandmaximumallowabledensityrangesspecifiedin表8規(guī)定的范圍內(nèi)，還是應(yīng)使用兩個(gè)象質(zhì)

Table8,thentwoIQIsshallbeused.Oneshallbeplacedonthe計(jì)。一個(gè)放在有效區(qū)的黑度最小區(qū)，另一

lightestareaofinterestandtheothershallbeplacedonthe個(gè)放在有效區(qū)的黑度最大區(qū)。

darkestareaofinterest.

Table8AcceptableMin&MaxDensity.

表8合格的最小和最大黑度

DensityofRadiographD

MethodofViewing觀片方法

MinimumMaximumMin.Max.

Single1.84.0單片法1.84.0

Composite1.3A4.0雙片法