Practice Questions All Questions are Closed Book
1. API Recommended Recommended Practice Practice 574, Inspection of Piping, Tubing Tubing Va Valves, and ittings, does not cover. a. contro ntroll valv valvees. b. Piping smaller t!an "# $P%. c. Tubin Tubingg small smaller er t!an t!an 1.5# 1.5# diam diamete eter. r. d. ittin ittings gs smalle smallerr t!an t!an "# $P%. $P%. ". T!e refining refining industr industr&& generall& generall& uses uses '!at '!at t&pe piping piping for severe severe service service(( a. brass. b. cast. c. %eamless. d. )ongit )ongitud udina inall seam seam 'elded 'elded.. *. Piping Piping made made b& rolling rolling plates plates to to si+e and and 'elding 'elding t!e seam seamss is larger larger t!an t!an inc!es -utside diameter. a. 1 b. 1/ c. 14 d. 1" 4. %teel %teel and allo& allo& piping piping are are also manufactu manufactured red to standa standard rd dimensio dimensions ns in nominal nominal pipe pipe si+es up to inc!es. inc!es. a. "4 b. */ c. 40 d. 5 5. %teel %teel and allo& piping piping are also manufactu manufactured red to standard standard t!icnesse t!icnessess designated designated as sc!edules in nominal pipe si+es up to inc!es. inc!es. a. "4 b. */ c. 40 d. 5 /. T!e actual actual t!icn t!icness ess of 'roug!t 'roug!t piping piping ma& ma& var& from from its nominal nominal t!icne t!icness ss b& a manufacturing under tolertance of as muc! as percent. percent. a. 1".5 b. 1". c. 1. d. 1.5 7. 2ast piping piping !as !as t!icness t!icness tolerance tolerance of 3inc 3inc!! and inc inc!. !. a. 11/, b. 11/, 11/ c. 1*", 1*" d. */4,
0. or all nominal nominal pipe si+es si+es of inc!es inc!es and smaller, smaller, t!e t!e si+e refers refers to t!e nominal nominal inside diameter. a. 1 b. 1" c. 14 d. 1/ 6. nder nder tolerance tolerance of 'elded 'elded pipe pipe often often used in refiner& refiner& servic servicee is inc!. a. .1"5 b. .5 c. .1 d. .5 1. or '!at service is cast iron piping normall& normall& used. a. $on $on!a !a+a +ardo rdous us servi service ce,, suc! suc! as lube lube oils. oils. b. $on!a+ardous service, suc! as as 'ater. c. 2orros 2orrosive ive servi service, ce, suc! suc! as acids acids.. d. $oncorros $oncorrosive ive service service,, suc! as lo' tempe temperature rature caust caustic. ic. 11. Tubing is generall& generall& seamless dra'n, dra'n, but it ma& be 'elded. Its stated si+e is its actual8 a. outs utside ide rad radius ius. b. Inside diameter. diameter. c. -u -uts tsid idee dia diame mete terr. d. Ins Inside ide rad radius ius. 1". T!ere are man& t&pe valves. valves. 9!ic! is incorrect valve t&pe t&pe listed belo'( a. st&le t&le valve b. gate valve c. c!ec valve d. globe va valve 1*. 9!at t&pe valve is normall& used in a full& open or full& closed closed position( a. gate b. globe c. slide d. plug 14. 9!at t&pe gate valves !ave bod& and port openings t!at are smaller t!an t!e valves: end opening. a. ;o ;ord rdaa tub tubee gat gatee val valve vess b. Reducedport gate valves c. 9eir gate gate valv valves es d. %lui %luice ce gate gate val valve vess 15. 9!at t&pe of gate gate valve s!ould not be used as bloc valves associated associated 'it! pressure relief devices devices ( a. It is norma normall& ll& used used as bloc bloc valve valve b. It is commonl& used to regulate fluid flo' c. It is ordin ordinari aril& l& used used to mea measur suree press pressure ure drop drop d. It is fre
1/. 9!at is a globe valve used for( a. %luice gate valves b. 9eir gate valves c. ;orda tube gate valves d. Reducedport gate valves 17. A plug valve consists8 a. of a slide or slides t!at operate perpendicularl& to t!e flo' and move on rail guides to interrupt flo'. b. of a ball 'it! a !ole in it t!at fits into t!e valve bod& and interrupts t!e flo' of material. c. of a circular gate t!at operates in and out in t!e bod& to interrupt flo'. d. -f a tapered or c&lindrical truncated cone 'it! a slot fitting into a correspondingl& s!aped seat. 10. 9!at t&pe of valve depends upon a sp!erical t&pe gate !as a !ole in it and is rotated to open or close it( a. diap!ragm valve b. plug valve c. globe vlave d. ball valve 16. 9!at are c!ec valves normall& used for( a. T!e& are generall& used in erosive or !ig!temperature service. b. T!e& are used to automaticall& prevent bacflo'. c. T!e& are commonl& used to regulate fluid flo'. d. T!e& are used for conditions t!at re
"*. %ocet 'elded =oints are usuall& used in nominal pipe si+e of or smaller. a. 4# b. *# c. ".5# d. "# "4. 9!ic! of t!e =oints listed is t!e most common found in t!e petroleum industr&( a. compression =oints b. butt'elded =oints c. bellandspigot =oints d. sleeve =oints "5. T!e primar& purpose of piping inspection is to8 a.satisf& t!e re also ac!ieve desired
*1. Dou are ased to recommended a met!od for determining t!e t!icness of a pipe t!at !as 1.5# of insulation, 'it! a vapour barrier, and aluminium =aceting on it. 9!asEEFGHJK;LMNOpQJ0SU0 5 5 055? WW S0SU5 SUX 5U 5
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**. W 110 ^_?^:11^\1111JW?11J11^X]\^U11 ᄂ 11110 S0SW W S ]^ S^^X ᄂ 11110 S0S^:11 W11^ 11W^?U SUX01111X]S111111^X_11)11 111111\ ᄂ 110?^Sproblems can occur '!en tig!tening bolts to correct leaing flanges inservice. 9!ic! of t!e belo' is not one of t!ese problems( a.bolt interactions. b. &ielding due to overload c.flange deflection d. none of t!e above. *4. 9!ic! one of t!e follo'ing is not a factor for consideration '!en establis!ing corrosionmonitoring programs( a.accessibilit& b. circuitisation c.transducer diameter d. ris classification. *5. A greater loss in metal t!icness 'ill usuall& be observed near a restriction or c!ange in direction in a pipe line. 9!at usuall& causes t!is( a.T!e effects of turbulence or velocit&. b. T!e effects of stagnation or fretting. c. T!e effects of corrosion or declination. d. T!e effects of oWidation or 'aning. */. 9!at t&pe of problem 'ould &ou eWpect to find in catal&st, fluegas, and slurr& piping on a luid 2atal&tic 2racing nit. a. embrittlement b. cracing c.corrosion d. erosion *7. %tainless steel suc! as t&pe *4 10 2!r.0 $i in t!e presence of temperature above 1 degrees . ma& crac because of t!e presence of8 a.nitrates b. sulp!ides c.c!lorides d. dissolved oW&gen *0. A "# diameter line is in=ecting a product into an 0# diameter pipe. 9!at t&pe of deterioration 'ould &ou eWpect to tae place( a.accelerated corrosion or erosion b. long term corrosion c. c!loride cracing d. dissolved oW&gen pitting. *6. An inspector is c!ecing a piping s&stem t!at !as !ad problems 'it! isolated corrosion at or near t!e 'elds of piping s!oes. 9it!out no'ing '!at product is in t!e line, '!at 'ould be t!e best ans'er belo' for t!e problem( a.T!e s!oes are at !ig! stress points and t!us leas occur. b. T!e 'elds of t!e s!oes to t!e pipe 'ere too large.
c.T!e 'elds of t!e s!oes to t!e pipe burned nearl& t!roug! t!e pipe. d. T!e s!oes are acting as cooling fins and causing locali+ed temperature differences. 4. 9!at t&pe of problem 'ould &ou eWpect in piping containing Amine( a.dissolved oW&gen cracing b. stress corrosion cracing c.galvanic corrosion. d. crevice corrosion. 41. 9!at area do &ou consider to be of most concern '!en inspecting a piping s&stem( a.nderneat! insulation on lines operating at temperatures above " . b. In a straig!t run pipe containing motor oil c.At andor do'nstream of a c!emical in=ection point. d. nderneat! insulation on lines operating belo' "5 . 4". )eas in utilit& piping 'ater, steam etc. are8 a.onl& of minor concern and ma& be disregarded. b. al'a&s dangerous but losses are negligible. c.seldom !a+ardous but t!e& do result in lossees. d. usuall& !a+ardous and losses result. 4*. 9!ere do man& ma&be t!e ma=orit& of leas occur in pipelines( a.straig!t runs of piping b. flanges or pacing glands c.c!anges of direction of piping d. do'nstream of in=ection points. 44. T!e prompt repair of 'ill often prevent serious corrosion or erosion of gaset surface or pacing glands. a.supports b. leas c.guides d. 'elds 45. T!e deformation of a vessel 'all in t!e vicinit& of a pipe attac!ment> eWpansion =oints t!at are not performing properl&> a pipe dislodged from its support> etc are evidence of8 a.misalignment b. leas c.'eld problems d. drips 4/. %pring !anger loading s!ould be c!eced under8 a.elevated temperature conditions. b. bot! cold and !ot conditions. c.sub+ero temperature conditions. d. ambient temperature conditions.
47. An inspector finds concrete fireproofing around a structural steel column 'it! openings cracs. T!e inspector suspects t!at 'ater ma& be entering. 9!at s!ould t!e inspector do( a.T!e inspector s!ould as !is supervisor '!at !e s!ould do. b. All t!e fireproofing s!ould be stripped from t!e column. c. noug! fireproofing s!ould be removed to determine t!e eWtent of t!e problem. d. $o action s!ould be taen. 40. If a steel column in a pipe support rac is corroded. 9!at s!ould t!e inspector do( a.?ave t!e corrosion products cleaned off and !ave t!e column painted b. $o action is re
51. As an inspector, &ou find a /# diameter pipe line t!at is vibrating and s'a&ing . 9!at is one of t!e most important t!ings &ou 'ould c!ec for and '!ere 'ould &ou c!ec( a.ireproofing on t!e supports s!ould be c!eced for spalling and breaing. b. 9elds s!ould be inspected for cracs, particularl& at points of restraint. c.;aseplates of t!e pipe supports s!ould be c!eced to see if t!e bolts are tig!t. d. valves in t!e s&stem s!ould be c!eced to insure t!e& are not vibrating openclosed. 5". An insulated pipe s!o's evidence of defects in t!e =aceting covering t!e insulation. Dou suspect t!at 'ater ma& be getting in t!roug! t!e defects. 9!at &ou 'ould do( a. %trip t!e pipe line complete to allo' 1 inspection and rene'al of t!e insulation. b. If no discoloration is present to indicate corrosion rust, no action is re
c. %trip enoug! insulation to determine t!e eWtent and severit& of possible corrosion. d. %trip at least 5 of t!e insulation from t!e pipe to allo' eWamination. 5*. 9!ile inspecting an underground pipe line rig!tof'a&, &ou find a discolored spot on t!e ground near a road t!at crosses t!e rig!tof'a&. 9!ic! of t!e items belo' 'ould be t!e course &ou 'ould follo'( a. T!e inspector s!ould mae a note for t!e records and !ave t!e area c!eced at some future time for possible leaage. b. It is not unusual to !ave discoloration on pipe line rig!tof'a&s. If t!e discoloration is not 'et and t!ere is no evidence of leaage, no action is re
ltrasonic instruments are 'idel& used for t!icness measurements and are used eWtensivel& b& inspection organi+ations. If a transducer is not e
5/.
9!at 'ould &ou eWpect to !appen if &ou 'ere taing T readings on piping t!at 'as operating !ig!er t!an " .( a T!e t!icness readings could be at least 1 !ig!er or lo'er. b. T!e t!icness readings 'ould not be influenced. c. T!e t!icness readings could be about 1 to 5 !ig!er depending on t!e temperature. d. T!e t!icness readings 'ould be 15 !ig!er or lo'er.
57.
An insulated piping s&stem needs to !ave its pipe 'all t!icness c!eced. T!e o'neruser does no 'ant !oles cut in t!e insulation for T measurements and t!e& do not 'ant to s!ut do'n. 9!at 'ould &ou do to obtain t!icness readings( a. A b. CT c. T d. RT
50.
Reduction of strengt! of t!e metal in a pipe, scaling, bulging, metal deterioration or complete failure are all s&motoms of8 a. eWcessive pressure b. lo' temperature c. eWcessive temperature d. bloced effluent.
56.
Points of probable eWternal corrosion of underground piping can be located b& a series of measurements of t!e 8 a. electrical resistance of surrounding soil or b& measurement of pipetosoil electrical potentioal. b. 'attage of t!e surrounding piping or b& measurement of pipetoconduit electrical resistance. c. potential of t!e cat!odic protection or b& 'attage of t!e pipetosoil electrical resistance. d. voltamps readings of t!e surrounding soil or b& measurement of pipetopipe electrical potential.
/.
-ne of t!e most important t!ings t!at an inspector must do before !e actuall& goes out to mae an inspection is8 a. mae sure all electrical potentials !ave been c!eced and s!ut off '!ere necessar& to prevent contact. b. c!ec all lines to =ust before t!e point t!e& enter t!e unit limits to mae sure onl& t!e unit lines are inspected. c. revie' t!e condition of transportation cars, trucs, scooters, bic&cles etc. to mae sure transportation is not interrupted. d. revie' t!e records of previous inspections and of inspections conducted during t!e current operating period.
/1.
9!en maing a visual internal inspection of a pipe and fouling is found, '!at s!ould t!e inspector do( a. Cae a note to include in t!e records> anot!er inspector at t!e neWt period ma& 'ant to investigate furt!er. b. 2!ec 'it! t!e operators to see if it is causing problems, if no problems no furt!er action is necessar&. c. 2leaning s!ould be considered, also, t!e deposits s!ould be c!eced to find t!eir origin. d. ?ave t!e line cleaned completel& immediatel&, mae a complete 'rite up for records.
/".
T!e locations on piping most susceptible to cracing anre8 a. c!anges of directions. b. 'leds c. straig!t runs.
d. flange bolts /*.
9!en c!ecing austentic materials for cracs using PT met!ods onl& li
/4.
9!at t&pe of defect 'ould &ou eWpect to find at t!e problem of a groove of a ring =oint flange made from A%TC*47 %tainless %teel( a. pits b. cracs c. !&drogen blisters d. fouling
/5.
Valves s!ould be dismantled at specified intervals to permit eWamination of all internal parts. ;od& t!icness s!ould be measured at locations t!at 'ere inaccessible before dismantling, particularl& at8 a. t!e dis seating surfaces b. flange '!ere t!e bonnet is attac!ed. c. locations t!at s!o' evidence of corrosion or erosion. d. random locations t!roug!out t!e valve.
//.
;odies of valves t!at operate in severe c&clic temperature service s!ould be c!eced internall& for8 a. erosion b. fouling c. cracs d. pitting
/7.
Bate valves s!ould be measured for t!icness bet'een t!e seats, since serious deterioration ma& !ave occurred because of8 a. cracs b. turbulence. c. fouling d. corrosion
/0.
9!& is t!e area bet'een t!e seats of a gate valve a 'ea location( a. Pitting can occur at t!is location '!ile t!e valve is operating open. b. ouling can occur at t!is location '!ere t!ere is a possibilit& of !ig! velocit&. c. T!e bod& of t!e valve is t!inner in t!is location. d. T!e 'edging action of t!e dis '!en is seats causes strain in t!is area.
/6.
After a valve !as been inspected, repaired, and reassembled, '!at s!ould be done neWt( a. It s!ould be plasited inside to prevent corrosion and returned for reinstallation.
b. It s!ould be returned to t!e =ob for reinstallation c. It s!ould be painted and t!e inlet and outlet capped. d. It s!ould be tested to API 560 re
In addition to c!ecing t!e gaset surfaces of flanges for defects, and c!ecing for corrosion and erosion, '!ic! of t!e follo'ing additional c!ecs8 a. T!e rating of t!e flanges must be c!eced to mae sure t!at t!e& are bot! class 15 and t!e& bot! !ave t!e same number of bolt !oles. b. T!e bolts s!ould be c!eced for proper specification, stretc!ing and corrosion. T!e gaset must be of t!e proper t&pe and material. c. T!e flange bolt !oles must matc! and at least one flange must be a class 15 or *. d. T!e bolts s!ould be mac!ine grade and brandne'. T!e gaset must be a minimum of a spiral 'ound grafoil filled.
71.
A 'eld is being made in carbon steel piping carr&ing Amine CA. 9!at s!ould t!e inspector c!ec in addition to insuring t!at t!e 'eld is proper and meets specification( a. T!e class of t!e piping, i.e. 15,*,/ etc s!ould be verified. b. Amine can cause environmental cracing> t!e 'eld s!ould be c!eced for !ardness. c. 9elds on t!e 'eld !angers s!ould be made c!eced and t!e results recorded. d. 2!ec t!e seating surface and lig!tness of t!e =oint b& 9CT.
7".
9elded =oints in carbon steel and carbonmol&bdenum steel eWposed to elevated temperatures of 0 or over ma& be sub=ect to8 a. !&drogen attac b. grap!iti+ation c. environmental cracing d. grap!itic corrosion.
7*.
9!ic! one of t!e listed is not a cause for a t!readed =oint lea( a. use of t!e proper lubricant b. improper assembl& or loose t!reads c. corrosion or poor fabrication d. 2ross t!reading or dirt& t!reads at assembl&
74.
9!& s!ould a leaing t!readed =oint not be tig!tened '!ile t!e s&stem is in service under pressure( a. An undetected crac in a t!read root mig!t fail and cause a release of product. b. Tig!tening ma& eWacerbate t!e !ardness of t!e t!reads and cause leas. c. T!e pressure on t!e gaset ma& be so great t!at it causes a failure and t!us leas. d. %upports ma& fail if t!e t!readed =oint is lig!tenedtension on t!e supports.
75.
9!at t&pe of pipe =oint must not be used 'it!out ade
a. b. c. d.
t!readed =oints. langed =oints. 2lamped =oints. 9elded =oints.
7/.
9!ic! of t!e follo'ing is not a cause of misalignment( a. inade
77.
9!ere eWcessive vibration or s'a&ing 'as noted in a piping s&stem during operation, an inspection s!ould be made for points of and and for cracs in 'elds at locations t!at could bot be inspected during operation. a. grap!iti+ation, grap!itic corrosion b. scaling, internal oWidation c. abrasion, eWternal 'ear d. rusting, !&drogen blisters
70.
Piping t!at !as been in service or !ad !ot spots of 0 and above s!ould be c!eced for creep or deformation 'it! time under stress b&8 a. using a transit to establis! correct alignment and elevation or plumbness. b. Ceasuring t!e outside diameter of t!e pipe and comparing establis!ed data for life. c. Pressure testing t!e piping to ensure it is serviceable. d. Wamining t!e piping 'it! acoustic emission e
76.
%pecial attention s!ould be given to small connections suc! as vents, bleeders, an& t&pe of small nipple. -ne met!od for successfull& c!ecing t!e condition and t!e t!icness of nipples is t!e use of 8 a. RT b. A c. CT d. PT
0.
A pressure test for piping, in most cases is a8 a. lea test. b. %tress test c. bullition test d. %trengt! test.
01.
An& s&stem being tested needs to be completel& isolated to8 a. prevent t!e testing medium from t!e entering connecting lines. b. Insure onl& t!e s&stem in
d. %top t!e testing medium from being contaminated 'it! material from ot!er lines. 0".
If a pressure test is conducted 'it! air or if eWcess air is trapped in a s&stem t!at is being !&drostaticall& tested, a failure of t!e s&stem 'ill be8 a. less violent t!an in a totall& li
0*.
9!ic! of t!e follo'ing materials NOT be commonl& used for a pressure test( a. 'ater 'it! or 'it!out an in!ibitor, free+ingpoint depressant, or 'etting agent. b. ?&drogen, !&drogen sulp!ide, gasoline, li
04.
In '!ic! of t!e follo'ing s&stems 'ould 'ater be a
05.
9!at s!ould be considered '!en testing carbon steel piping during cold 'eat!er or if cold fluids are used in t!e testing( a. T!e transition temperature of t!e steel s!ould be considered to prevent brittle failure. b. T!e test medium ma& free+e if it escapes during test. c. T!e transition temperature of t!e medium s!ould be considered for brittle cracing. d. T!e translation temperature of t!e test medium ma& free+e t!e test gages.
0/.
9!at is t!e preferred medium for a pneumatic test( a. a flammable gas b. an inert gas. c. ?&drogen gas d. Propane gas
07.
9!at t&pe of piping usuall& !as a pressure recorder attac!ed in '!ic! a permanent record of t!e test is made( a. boiler piping
b. underground piping c. lig!t !&drocarbon unit piping d. operating unit piping 00.
9!ic! of t!e follo'ing piping s!ould NOT be !ammer tested( a. pipe made from steel on a luid 2atal&tic 2racing nit. b. %teel pipe and lines off a crude to'er on a crude still. c. 2ast iron and stressrelieved lines in caustic and corrosive service. d. A%TC A1/ Brade A pipe on a catal&tic Reforming nit.
06.
$e' construction piping s!ould meet t!e re
6.
9!en A%C ;*1.* cannot be follo'ed because of its ne' construction orientation, '!ic! document s!ould guide t!e ngineerInspector( a. API 574 b. API 575 c. A%C VIII d. $one of t!e above.
61.
A piping ngineer must be8 a. A degreed Cec!anical ngineer. b. Acceptable to t!e o'neruser c. ualified as an API 57 Inspector. d. A single entit&i.e., cannot be more t!an one person
6".
9!ic! of t!e follo'ing is not a rerating( a. A hscab# patc! causing a decrease in design pressure. b. A derating for corrosion. c. A c!ange in materials to a lo'er stress value. d. An increase in t!e CA9P of t!e s&stem.
6*.
A hpiping s&stem# does not include '!ic! of t!e follo'ing items( a. piping supports. b. ittings c. ents. d. Valves
64.
T!e boundar& of a piping circuit s!ould be si+ed8 a. ;& t!e inspector. b. To provide for accurate recordeeping and field inspection c. To minimi+e TC)@s d. To remove t!e t!reat of 2I
65.
9!en using statistical met!ods to assess corrosion in piping, it is ver& important to . a. Properl& select components to b. ?&drotest all piping c. nsure an ade
CLOSED BOOK QUESTIONS ANSWER KE
1. ". *. 4. 5. /. 7. 0. 6. 1. 11. 1". 1*. 14. 15. 1/. 17.
a c b c b a a b c b c a a b d b d
API 574, 1.1 API 574,4.1 API 574,4.1 API 574,4.1 API 574,4.1 API 574,4.1 API 574,4.1 API 574,4.1 API 574,4.1 API 574,4.1 API 574,4." API 574,4.* API 574,4.*." API 574,4.*." API 574,4.*." API 574,4.*.* API 574,4.*.4
46. 5. 51. 5". 5*. 54. 55. 5/. 57. 50. 56. /. /1. /". /*. /4. /5.
cAPI b b c d d b c d c a d c b d b c
API574, 1.1.1.* API 574, 1.1.1.* API 574, 1.1.1.4 API 574, 1.1.1.5 API 574, 1.*.1.1 API 574, 1.".1.1 API 574, 1.1.".1 API 574, 1.1.".1 API 574, 1.1."." API 574, 1.1.1.7 API 574, 1.*.1.4 API 574, 1".5 API 574, 1.".1.1 API 574, 1.".1." API 574, 1.".1.* API 574, 1.".1.4 API 574, 1.".1.4
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d b c c b d b c d a c d c b d d c a d c a d b c c b b a b c c
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