WELDING IMPERFECTIONS 1. When visually inspecting the root bead of a single-vee-butt single-vee-butt weld it should be checked for…. a. lack of penetration b. HAZ hardness c. tungsten inclusion d. all of the above 2. When visually inspecting the face of a finished weld it should be assessed for a. a!iu e!cess weld etal height b. toe blend c. inter-run blend d. all of the ao!e ". Heavy porosity on the surface of soe ##A welds ade on a construction site is ost likely to be caused by…. a. use of the wrong class of electrodes b. the use of e!cessive current c. "oi#t$re pick%$p in the electrode co!erin& d. a bad batch of electrodes $. %lag inclusions ay be present in….. a. ##A welds b. #&' welds c. %A welds d. oth a ' c (. What is hollow bead) a. concave root . elon&ated poro#it( in the root c. lack of penetration d. a slag line above the root *. Which of the following butt weld preparations is generally ost susceptible to lack of sidewall fusion during ##A welding) a. a )*) preparation# b. a +,+ preparations preparations c. a +double ,+ preparations preparations d. lack of sidewall sidewall fusion does not not e!ist with ##A ##A welding . Which of the following processes is ost susceptible to lack of f usion a. ##A b. &' c. %AW d. CO+ ,"etal acti!e &a#/. Which of the following butt-weld preparations preparations is usually the ost susceptible to lack of sidewall fusion during the aual etal arc process) a. a do$le * $tt b. a single , butt c. a double , butt d. it is not norally norally a defect associated associated with the ##A welding process process
0. What is eant by the ter t er crater pipe a. Another ter for concave root
b. Another ter given for a burn through c. A type of gas pore found in the weld crater d. #hrinka&e defect/ fo$nd in the 0eld crater 1. Which of the following welding processes3techni4ue is likely to be used for the repair welding locali5ed porosity in a butt weld) a. MM/ PG po#ition b. echani5ed #A' c. suberged arc d. all of the above e. none of the above 11. Which of the following is applicable for none planar defects) a. they are always repaired b. their e!istence will result in the reoval of the entire weld c. they are not usually as significant as planar defects d. the( can onl( e detected $#in& radio&raph( 12. &n the ##A welding process which of the following is ost likely to be caused by a welder with a poor techni4ue) a. deep weld craters3crater cracks b. copper inclusions c. h(dro&en crack# d. all of the above 1". 6oot concavity is caused by7 a. e!cessive back purge pressure and entrapped gas b. e!cessive back purge pressure and very high heat inputs c. e!cessive root grinding and a slow travel speed d. e1ce##i!e root &rindin& and e1ce##i!e ack p$r&e pre##$re 1$. When inspecting a critical coponent the toes of a weld ust be7 a. always ground flush . "$#t al0a(# o!erlap at lea#t 2.3"" into the parent "etal c. ust always be inspected using a crack detection ethod 8#9& :9&; d. none of the above can be selected - specification re4uireents unknown 1(. Which of the following is ost likely to cause a burn through a. root &ap too #"all b. travel speed too fast c. root face too sall d. all the above 1*. When carrying out visual inspection which defect is likely to be issed a. linear isalignent b. cap undercut c. porosity d. lack of f$#ion ,inter r$n1.
d. electrode diaeter too sall 10.
!cessively fast welding speeds b. &proper electrode angle c. 4ot #hrinka&e d. &proper ?oint design 2. A fabrication procedure calls for the toes of all welds to be blended sooth by grinding he ost likely reason for doing this is to…… a. ake the weld suitable for li4uid 8dye; penetrant inspection . i"pro!e the fati&$e life c. reduce residual stress d. iprove the general appearance of the welds 21. @or a full penetration single , butt ?oint control of root bead penetration is ainly influenced by the….. a. root face b. bevel angle c. root &ap d. included angle 22. Acceptance standards for undercut ay be based on……… a. depth b. length c. sharpness3profile3blend d. all of the ao!e 2". When the root bead of a single-,-butt weld is visually inspected it should be checked for….. a. lack of root penetration b. HAZ hardness c. tungsten inclusions d. all of the above 2$. &ncoplete root penetration ay be caused by… a. an e!cessive root face b. an e!cessive root gap c. the current setting being too slow d. oth a ' c 2(. &ncoplete root fusion in a single , butt weld ay be caused by……. a. linear "i#ali&n"ent b. the root gap being too large c. root faces being too sall d. all of the above 2*. When visually inspecting the face of a finished weld it should be assessed for…… a. e!cess weld etal height b. toe blend3 profile c. inter-run blend3profile d. all of the ao!e 2. A burn-through ay occur if……. a. the current is too slow b. the root face is too large c. the root &ap i# too lar&e d. all of the above 2/. A solid inclusion in a weld ay be….
a. entrapped #la& b. entrapped gas c. lack of inter-run fusion d. all of the above 20. Which of the following would be classed as a planar iperfection) a. a lack of #ide 0all f$#ion b. a slag inclusion c. linear porosity d. root concavity ". Heavy porosity on the surfaces of soe ##A welds ade on a construction site is ost likely to be caused by….. a. use of the wrong class of electrodes b. the use of e!cessive current c. "oi#t$re pick%$p in the electrode co!erin& d. a bad batch of electrodes "1. %lag inclusion ay be present in…… a. ##A welds b. #&'3#A' welds c. %AW welds d. oth a ' c "2. he ain cause of undercut is…… a. e1ce##i!e a"p# b. e!cessive volts c. e!cessive travel speed d. all of the above "". &f a Welding &nspector detects a type of iperfection not allowed by the Application %tandard he ust always…… a. re4uest further : . re5ect the 0eld c. prepare a concession re4uest d. only re?ect the weld if he considers it to be harful "$. Which of the following is a non-planar iperfection) a. A weld centerline crack b. A HAZ crack c. A
c. pre!ent o1idation of the root ead d. prevent oisture pick-up in the root bead "/. >!cessive spatter during ##A welding is ost likely to be caused by……. a. e1ce##i!e c$rrent b. incorrect baking and storage of electrode c. a bad batch of electrode d. all of the above "0. An arc strike 8stray arc; on a steel coponent is usually an unacceptable iperfection because.. a. it ay cause containation by copper b. it ay cause hard spots c. it ay give cracking d. oth ' c $. Which of the following would be classed as the ost serious type of defect) a. a buried linear slag inclusion b. buried lack of inter-run fusion c. #$rface reakin& lack of #ide0all f$#ion d. surface porosity $1. ,isual e!aination has revealed the presence of a longitudinal crack running down the center of a suberged arc weld bead. his could be due to7 a. the use of dap flu! b. the specified pre-heat teperature has not been used c. the arc voltage used was too high d. the 0eld ead 0a# !er( deep and narro0 $2. o reduce the risk of crater cracks in &' welds the welder could7 a. ake the weld pool free5e ore 4uickly by rapid withdrawal of the filler wire b. ake the weld pool free5e ore 4uickly by rapid arc e!tinction c. $#e a c$rrent #lope%o$t de!ice d. use all of the above techni4ues $". Which of the following defects would show up as light indications on a radiograph) a. %lag inclusions and copper inclusion . T$n&#ten incl$#ion# and e1ce##i!e root penetration c. cap undercut and root piping d. e!cessive cap height and incoplete root penetration $$. Bn a radiograph the ost likely appearance of lack of root fusion on a single-,-butt weld is7 a. a dark #trai&ht line 0ith a li&ht root b. a dark root with straight edges c. a dark uneven line following the edge of the root d. none of the above lack of root fusion can not be seen on a radiograph $(. :efects outside the perissible liits of the applicable specification should be7 a. the decision is up to the welding inspector . repaired c. always double checked using : d. all of the above $*. he ain reason for using a back purge when welding 1/-/ stainless steel with the &' welding process is to7 a. iprove positional welding b. prevent the possibility of porosity c. prevent e!cessive root penetration d. pre!ent the for"ation of a den#e o1ide la(er for"in& in the root
$. When welding a double , butt weld with the suberged arc welding process the presence of center line porosity ay be due to C7 a. dap flu! . conta"ination on the 0eld preparation# c. incorrect flu! depth d. all of the above $/. When welding with the #&' welding process using pure argon as the shielding gas on carbon steel which of the following probles are likely to occur) a.
(2. Which of the following defects is ore coon to weld deposited by the
b. undercuts c. o!erlap d. linear isalignent (*. When open site working serious porosity in ##A welding is brought to your attention. What would you investigate) a. electrode type b. power plant type c. electrode #tora&e d. day teperature (. When the &' welding austenitic stainless steel pipe. Argon gas backing is called for. his is to7 a. pre!ent o1idation b. prevent under bead cracking c. prevent porosity d. control the penetration bead shape (/. &n the welding of austenitic pipe work the borer is usually purged with argon to) a. prevent foration of porosity in the weld b. prevent burn-through in the root run c. pre!ent o1idation of the root ead d. eliinate the foration of H2 (0. &ncoplete penetration in a butt ?oint could be caused by7 a. >!cessive root face width b. >!cessive root gap si5e c. Eow current setting d. 6oth a ' c *. &ncoplete root fusion weld certainly be caused by7 a. linear "i#ali&n"ent b. incorrect tilt angle c. differing root face widths d. all of the above *1. When visually copleted single , butt weld cap you would certainly assess7 a. cap height b. toe blend c. weld width d. a/ ' c *2. Dou notice a very +veed+ ripple shape. his is ost likely caused by7 a. poor cosuable choice . 0eldin& po#ition c. e!cessive travel speed d. all of the above *". oe blending is iportant as it ey affect7 a. corrosion . fati&$e life c. overlap type defects d. all of the above *$. %lag inclusion would occur with7 a. ##A b. #&' c. %AW
d. oth a ' c *(. Fndercut principally caused by7 a. e1ce##i!e a"pere# b. e!cessive volts c. e!cessive travel speed d. all of the above **. Fndercut norally assessed by7 a. its depth b. its length c. its blending d. all of the ao!e *. he planar defect is7 a. incoplete fusion defects b. slag inclusion c. incoplete penetration d. oth a ' c */. :efects outside of the liits specified in the standard should always be7 a. repaired b. reported to a senior person c. assessed along with other defects d. all of the above *0. #&' welding tends to be susceptible to lack of fusion probles. his is because of7 a. poor aintenance of e4uipent . incorrect #ettin& c. poor inter-run cleaning d. all of the above . he ain causes of porosity in welded ?oints are7 a. poor access . lo## of &a# #hield c. dirty aterials d. all of the above 1. Weave techni4ue ay give rise to7 a. better profiles b. iproved toe blending c. iproved ripple shape d. all of the ao!e 2. With reference to a root penetration bead you could certainly assess7 a. root fusion = penetration b. root concavity c. burn through d. all of the ao!e ". %tray arcing ay be regarded as a serious defect. his is because7 a. &t ay reduce the thickness diension of a coponent b. &t ay cause li4uation cracks c. It "a( ca$#e hard 7one# d. all of the above $. Bverlap in welds could be influence by7 a. poor 0eldin& techni8$e b. welding process
c. welding position d. all of the above (. @lae cut preparations ay during welding increase the likelihood of7 a. Crackin& b. #isalignent probles c. &nclusions d. All of the above *. Which of the following ay be classes as a ore serious defect7 a. slag inclusion b. fusion defects 8interun; c. f$#ion defect# ,#$rface. 9orosity is caused by7 a. >ntrapped slag in the solidifying weld . Entrapped &a# in the #olidif(in& 0eld c. >ntrapped ettalic inclusions in the solidifying weld d. none of the above /. he ost serious defects a. planar . crack# c. lack of fusion d. All of the above 0. What is crater pipe) a. an oval tube b. another ter for burn through c. a type of porosity d. a #hrinka&e defect /. Herringbone porosity is7 a. a partic$lar pattern of poro#it( b. ade up of worholes c. ade up
W>E:&' >6@><&B% 1. When visually inspecting the root bead of a single-vee-butt weld it should be checked for…. a. lack of penetration b. HAZ hardness c. tungsten inclusion d. all of the above 2. When visually inspecting the face of a finished weld it should be assessed for a. a!iu e!cess weld etal height b. toe blend c. inter-run blend d. all of the above ". Heavy porosity on the surface of soe ##A welds ade on a construction site is ost likely to be caused by…. a. use of the wrong class of electrodes b. the use of e!cessive current c. oisture pick-up in the electrode covering d. a bad batch of electrodes $. %lag inclusions ay be present in….. a. ##A welds b. #&' welds c. %A welds d. both a = c (. What is hollow bead) a. concave root b. elongated porosity in the root c. lack of penetration d. a slag line above the root *. Which of the following butt weld preparations is generally ost susceptible to lack of sidewall fusion during ##A welding) a. a +F+ preparations b. a +,+ preparations c. a +double ,+ preparations d. lack of sidewall fusion does not e!ist with ##A welding . Which of the following processes is ost susceptible to lack of f usion a. ##A b. &' c. %AW d.
1. Which of the following welding processes3techni4ue is likely to be used for the repair welding locali5ed porosity in a butt weld) a. ##A 9' position b. echani5ed #A' c. suberged arc d. all of the above e. none of the above 11. Which of the following is applicable for none planar defects) a. they are always repaired b. their e!istence will result in the reoval of the entire weld c. they are not usually as significant as planar defects d. they can only be detected using radiography 12. &n the ##A welding process which of the following is ost likely to be caused by a welder with a poor techni4ue) a. deep weld craters3crater cracks b. copper inclusions c. hydrogen cracks d. all of the above 1". 6oot concavity is caused by7 a. e!cessive back purge pressure and entrapped gas b. e!cessive back purge pressure and very high heat inputs c. e!cessive root grinding and a slow travel speed d. e!cessive root grinding and e!cessive back purge pressure 1$. When inspecting a critical coponent the toes of a weld ust be7 a. always ground flush b. ust always overlap at least 1.( into the parent etal c. ust always be inspected using a crack detection ethod 8#9& :9&; d. none of the above can be selected - specification re4uireents unknown 1(. Which of the following is ost likely to cause a burn through a. root gap too sall b. travel speed too fast c. root face too sall d. all the above 1*. When carrying out visual inspection which defect is likely to be issed a. linear isalignent b. cap undercut c. porosity d. lack of fusion 8inter run; 1. !cessively fast welding speeds
b. &proper electrode angle c. Hot shrinkage d. &proper ?oint design 2. A fabrication procedure calls for the toes of all welds to be blended sooth by grinding he ost likely reason for doing this is to…… a. ake the weld suitable for li4uid 8dye; penetrant inspection b. iprove the fatigue life c. reduce residual stress d. iprove the general appearance of the welds 21. @or a full penetration single , butt ?oint control of root bead penetration is ainly influenced by the….. a. root face b. bevel angle c. root gap d. included angle 22. Acceptance standards for undercut ay be based on……… a. depth b. length c. sharpness3profile3blend d. all of the above 2". When the root bead of a single-,-butt weld is visually inspected it should be checked for….. a. lack of root penetration b. HAZ hardness c. tungsten inclusions d. all of the above 2$. &ncoplete root penetration ay be caused by… a. an e!cessive root face b. an e!cessive root gap c. the current setting being too slow d. both a = c 2(. &ncoplete root fusion in a single , butt weld ay be caused by……. a. linear isalignent b. the root gap being too large c. root faces being too sall d. all of the above 2*. When visually inspecting the face of a finished weld it should be assessed for…… a. e!cess weld etal height b. toe blend3 profile c. inter-run blend3profile d. all of the above 2. A burn-through ay occur if……. a. the current is too slow b. the root face is too large c. the root gap is too large d. all of the above 2/. A solid inclusion in a weld ay be…. a. entrapped slag b. entrapped gas c. lack of inter-run fusion d. all of the above
20. Which of the following would be classed as a planar iperfection) a. a lack of side wall fusion b. a slag inclusion c. linear porosity d. root concavity ". Heavy porosity on the surfaces of soe ##A welds ade on a construction site is ost likely to be caused by….. a. use of the wrong class of electrodes b. the use of e!cessive current c. oisture pick-up in the electrode covering d. a bad batch of electrodes "1. %lag inclusion ay be present in…… a. ##A welds b. #&'3#A' welds c. %AW welds d. both a = c "2. he ain cause of undercut is…… a. e!cessive aps b. e!cessive volts c. e!cessive travel speed d. all of the above "". &f a Welding &nspector detects a type of iperfection not allowed by the Application %tandard he ust always…… a. re4uest further : b. re?ect the weld c. prepare a concession re4uest d. only re?ect the weld if he considers it to be harful "$. Which of the following is a non-planar iperfection) a. A weld centerline crack b. A HAZ crack c. A !cessive spatter during ##A welding is ost likely to be caused by…….
a. e!cessive current b. incorrect baking and storage of electrode c. a bad batch of electrode d. all of the above "0. An arc strike 8stray arc; on a steel coponent is usually an unacceptable iperfection because.. a. it ay cause containation by copper b. it ay cause hard spots c. it ay give cracking d. both b = c $. Which of the following would be classed as the ost serious type of defect) a. a buried linear slag inclusion b. buried lack of inter-run fusion c. surface breaking lack of sidewall fusion d. surface porosity $1. ,isual e!aination has revealed the presence of a longitudinal crack running down the center of a suberged arc weld bead. his could be due to7 a. the use of dap flu! b. the specified pre-heat teperature has not been used c. the arc voltage used was too high d. the weld bead was very deep and narrow $2. o reduce the risk of crater cracks in &' welds the welder could7 a. ake the weld pool free5e ore 4uickly by rapid withdrawal of the filler wire b. ake the weld pool free5e ore 4uickly by rapid arc e!tinction c. use a current slope-out device d. use all of the above techni4ues $". Which of the following defects would show up as light indications on a radiograph) a. %lag inclusions and copper inclusion b. ungsten inclusions and e!cessive root penetration c. cap undercut and root piping d. e!cessive cap height and incoplete root penetration $$. Bn a radiograph the ost likely appearance of lack of root fusion on a single-,-butt weld is7 a. a dark straight line with a light root b. a dark root with straight edges c. a dark uneven line following the edge of the root d. none of the above lack of root fusion can not be seen on a radiograph $(. :efects outside the perissible liits of the applicable specification should be7 a. the decision is up to the welding inspector b. repaired c. always double checked using : d. all of the above $*. he ain reason for using a back purge when welding 1/-/ stainless steel with the &' welding process is to7 a. iprove positional welding b. prevent the possibility of porosity c. prevent e!cessive root penetration d. prevent the foration of a dense o!ide layer foring in the root $. When welding a double , butt weld with the suberged arc welding process the presence of center line porosity ay be due to C7 a. dap flu!
b. containation on the weld preparations c. incorrect flu! depth d. all of the above $/. When welding with the #&' welding process using pure argon as the shielding gas on carbon steel which of the following probles are likely to occur) a.
(2. Which of the following defects is ore coon to weld deposited by the
What would you investigate) a. electrode type b. power plant type c. electrode storage d. day teperature (. When the &' welding austenitic stainless steel pipe. Argon gas backing is called for. his is to7 a. prevent o!idation b. prevent under bead cracking c. prevent porosity d. control the penetration bead shape (/. &n the welding of austenitic pipe work the borer is usually purged with argon to) a. prevent foration of porosity in the weld b. prevent burn-through in the root run c. prevent o!idation of the root bead d. eliinate the foration of H2 (0. &ncoplete penetration in a butt ?oint could be caused by7 a. >!cessive root face width b. >!cessive root gap si5e c. Eow current setting d. Goth a = c *. &ncoplete root fusion weld certainly be caused by7 a. linear isalignent b. incorrect tilt angle c. differing root face widths d. all of the above *1. When visually copleted single , butt weld cap you would certainly assess7 a. cap height b. toe blend c. weld width d. a b = c *2. Dou notice a very +veed+ ripple shape. his is ost likely caused by7 a. poor cosuable choice b. welding position c. e!cessive travel speed d. all of the above *". oe blending is iportant as it ey affect7 a. corrosion b. fatigue life c. overlap type defects d. all of the above *$. %lag inclusion would occur with7 a. ##A b. #&' c. %AW d. both a = c *(. Fndercut principally caused by7 a. e!cessive aperes b. e!cessive volts c. e!cessive travel speed
d. all of the above **. Fndercut norally assessed by7 a. its depth b. its length c. its blending d. all of the above *. he planar defect is7 a. incoplete fusion defects b. slag inclusion c. incoplete penetration d. both a = c */. :efects outside of the liits specified in the standard should always be7 a. repaired b. reported to a senior person c. assessed along with other defects d. all of the above *0. #&' welding tends to be susceptible to lack of fusion probles. his is because of7 a. poor aintenance of e4uipent b. incorrect setting c. poor inter-run cleaning d. all of the above . he ain causes of porosity in welded ?oints are7 a. poor access b. loss of gas shield c. dirty aterials d. all of the above 1. Weave techni4ue ay give rise to7 a. better profiles b. iproved toe blending c. iproved ripple shape d. all of the above 2. With reference to a root penetration bead you could certainly assess7 a. root fusion = penetration b. root concavity c. burn through d. all of the above ". %tray arcing ay be regarded as a serious defect. his is because7 a. &t ay reduce the thickness diension of a coponent b. &t ay cause li4uation cracks c. &t ay cause hard 5ones d. all of the above $. Bverlap in welds could be influence by7 a. poor welding techni4ue b. welding process c. welding position d. all of the above (. @lae cut preparations ay during welding increase the likelihood of7 a.
c. &nclusions d. All of the above *. Which of the following ay be classes as a ore serious defect7 a. slag inclusion b. fusion defects 8interun; c. fusion defects 8surface; . 9orosity is caused by7 a. >ntrapped slag in the solidifying weld b. >ntrapped gas in the solidifying weld c. >ntrapped ettalic inclusions in the solidifying weld d. none of the above /. he ost serious defects a. planar b. cracks c. lack of fusion d. All of the above 0. What is crater pipe) a. an oval tube b. another ter for burn through c. a type of porosity d. a shrinkage defect /. Herringbone porosity is7 a. a particular pattern of porosity b. ade up of worholes c. ade up
