API 570 Piping Inspector Preparatory Course MOCK EXAM — CLOSED BOOK
1.
Which Which of of the the foll follow owin ing g are are leas leastt likel likely y to hav have e corro corrosi sion on und under er ins insul ulat atio ion n C!I C!I"# "# a. $. c. d.
*.
Which Which of the follow following ing is typic typical al deteri deteriora oratio tion n that that can can take take plac place e on on the the e)ter e)ternal nal surfaces of pipes# a. $. c. d.
.
Areas su$%e su$%ect ct to process process spills& spills& 'oistur 'oisture& e& and(or and(or acid vapors vapors Areas e)posed e)posed to 'ist 'ist fro' fro' coolin cooling g towers towers Piping Piping syste syste's 's that that operat operate e a$ove a$ove *50+ *50+ , Areas Areas e)p e)pose osed d to stea' stea' vent vents s
C!I Caustic e'$rittle'ent -rosion All of the a$ove
/e'porar 'porary y repa repairs irs of locall locally y thin thinned ned sectio sections ns or circu circu'fe 'feren rentia tiall line linear ar defect defects s 'ay $e 'ade onstrea' $y installing a properly designed and fa$ricated $olted leak cla'p. What would this activity $e ter'ed as# a.Welding repair onstrea'" $.Per'anent repair c.onwelding repair onstrea'" d.2ot tapping
3.
,oll ,ollow owin ing g insp inspec ectio tion n data data is avai availa la$l $le e for for a pipi piping ng circ circui uit. t. 4ini'u' reuired thickness 6 0.3** in Actual thickness 'easured 'easured 6 0.51* in ong ter' corrosion rate 6 0.018 in ( year 9e'aining life for this circuit will $e a. $. c. d.
5.
5.0 years 3.5 years :.0 years ;ata ;ata is insu insuff ffic icie ient nt to calc calcul ulat ate e re'a re'ain inin ing g life life
Pipi Piping ng cla class ssifi ifica catio tions ns cla class ss 1& *& *& " " in API 570 570 will will res respe pect ctiv ively ely 'ean 'ean&& a. ow& ow& 'ediu' 'ediu' and and high high pressure pressure pipes pipes $. 2igh& 2igh& 'ediu 'ediu'& '& low low pressu pressure re pipes pipes
c. ow& 'ediu'& high level of inspection to $e perfor'ed d. 2igh& 'ediu'& low level of inspection to $e perfor'ed :.
Inspection records contain the following infor'ation for a particular thickness 'easure'ent location /4" in a return $end< Thickness
Year
0.500
0
0.425
5
0.400
10
=n the $asis of the infor'ation a$ove& the longter' corrosion rate for the location is< a. $. c. d. 7.
,or thickness 'easure'ent of pipes P?1 and s'aller. ;/ techniue e'ployed would $e< a. $. c. d.
8.
1 > 'ils per year 5 'ils per year 10 'ils per year 100 'ils per year
!ltrasonic techniue 9adiographic profile techniue Anyone is =@ one are =@
Identify one of the following alternatives that is suggested $y API 570 to deter'ine the 4a)i'u' allowa$le Working Pressure for an unknown 'aterial a.Assu'e the lowest grade 'aterial and lowest %oint efficiency in the applica$le code and calculate the 4AWP. $.;o not risk doing the calculation c.Contact and e)ternal design e)pert to calculate the 4AWP. d.Cut a portion of the piping and contact 'echanical testing to deter'ine the /ensile ?trength
.
Post weld heat treat'ent is carried out a. /o increase 2ardness $. /o increase /ensile strength
c. d. 10.
/o release lockedup stresses in the weld and i'prove ductility one of the a$ove
/he e)ternal surfaces of vessels should $e e)a'ined not only for corrosion $ut also forB a. $. c.
eaks Cracks uckles
d. 11.
If pro$a$le corrosion rates can not $e deter'ined onstrea' deter'inations shall $e 'ade appro)i'ately a. $. c. d.
1*.
Water only =il only Water and aueous solutions one of the a$ove
/hickness 'onitoring during periodic 'easure'ents is taken at< a. $. c. d.
1:.
efore PW2/ After PW2/ and $efore painting After PW2/ and painting Anyti'e is okay
,reeFe da'age can occur in case of which of the following fluids< a. $. c. d.
15.
Painted pipes operating at 150+ , Insulated pipes operating at 150+ , Pro%ections as penetrations in DaE Pro%ections as penetrations in D$E
In case of piping reuiring PW2/ Pressure test is conducted a. $. c. d.
13.
within : 'onths of service within 'onths of service within 1 'onths of service one of the a$ove
Which of the following 'ake pipe syste' 'ost suscepti$le to C!I# a. $. c. d.
1.
All of the a$ove
?a'e /4? as used in previous inspection ew /4? only -ither sa'e or new are okay ;epends on opinion of inspector
,or calculating 4AWP of Piping Circuit which is put in service the wall thickness used in co'putations is< a. Actual thickness as deter'ined $y inspection. $. Actual thickness 'inus the esti'ated corrosion loss $efore the date of ne)t inspection c. Actual thickness 'inus twice the esti'ated corrosion loss $efore the date of ne)t inspection d. one of the a$ove
17.
DActively -ngagedE as an authoriFed piping inspector 'eans so'e 'ini'u' ti'e as percentage of 'ost recent years shall $e spent on piping inspection. /his 'ini'u' period is< a. $. c. d.
18.
/a$le :* of API 570 standard gives e)tent of C!I inspection following the visual inspection& which is applica$le to< a. $. c. d.
1.
>E *E 3E Any dia'eter possi$le
,or a typical Din%ection point pipe circuitE starts upstrea' of in%ection point fro' a distance of a. $. c. d.
*.
A?4- ?ec. HIII ;IH 1 A?4- ?ec. I A?4- 1.1 A?4- 1.
A radiographic techniue in which radiation passes through two walls and $oth the walls are viewed on the sa'e radiograph dou$le wall& dou$le i'age J ellipse" the li'itation for the outside dia'eter is a. $. c. d.
**.
ot 'ore than two threads ot 'ore than one thread olts and nuts are engaged at least 50G of threads in the nuts olts shall co'pletely e)tend through nuts
asic construction code referred in API 570 is a. $. c. d.
*1.
-ntire insulated area Areas with da'aged insulation ?uspect areas within suscepti$le te'perature $ and c
As per API 570 for $olted flanged %oints& $olts and nuts are considered as accepta$ly engaged if the lack of co'plete engage'ent is< a. $. c. d.
*0.
*5G 50G *0G 30G
ti'es pipe dia'eter or 1* inches which ever is greater * ti'es pipe dia'eter or 1* inches which ever is greater ,i)ed 1* inches irrespective of pipe dia'eter one of the a$ove
After applying the developer the e)a'iner checked four welds for surface defects after following period& weld A J After 5 'inute& weld after 10 'inutes& weld C
was checked after 0 'inutes and welds ; after :5 'inutes which of the welds were checked wrongly a. $. c. d. *3.
Weld A and Weld C and ; Weld ; only Weld A and ;
,or 4/ e)a'ination $y Prod techniue the spacing $etween prods shall $e $etween a. $. c. d.
*5.
API 570 was developed for the petroleum refining and chemical process industries. a) b) c) d)
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shall be used for all piping systems. may be used, where practical, for any piping system. can be used, where necessary, for power piping. may not be used unless agreed to by all parties.
Piping 'ngineer Inspector (epair rganisation perating Personnel
*ho is responsible for the overall control of piping system inspection programs, inspection fre%uencies and maintenance of piping+ a) b) c) d)
.
It It It It
"he ########## shall be responsible to the owner$user for determining that the re%uirements of API 570 for inspection, e&amination, and testing are met. a) b) c) d)
7.
3 inch to 1* inch 3 inch to 10 inch inch to 10 inch inch to 8 inch
Authorised Piping Inspector wner$user urisdiction -ontractor
*hat is the best thing to do with deadlegs that are no longer in service + a) b) c) d)
/ltrasoncally inspect often (adiograph often Inspect often (emove them
.
-ertain areas and types of piping systems are potentially more susceptible to corrosion under insulation. *hich of the items listed is not susceptible to -/I + a) b) c)
d)
30.
'rosion can be defined as 4$ a) b) c) d)
3.
c) d)
high$velocity and high$turbulence areas areas where condensation or e&posure to wet hydrogen sulphide or carbonates occur surface$to$air interfaces f buried piping areas where gradual loss of material occurs because of a corrosive medium
'nvironmental crac6ing of austenite stainless steels is caused many times by4 a) b) c) d)
33.
galvanic corrosion of a material where uniform losses occur removal of surface material by action of numerous impacts of solid or li%uid particles gradual loss of material by a corrosive medium acting uniformly on the material surface pitting on the surface of a material to the e&tent that a rough uniform loss occurs
A combination of corrosion and erosion results in significantly greater metal loss that can be e&pected from corrosion or erosion alone. "his type of loss occurs for a corrosive fluid at a) b)
3.
Areas e&posed to mist over$spray from cooling water towers. -arbon steel piping systems that normally operate in$service above 50 degrees but are in intermittent service. 1eadlegs and attachments that protrude from insulated piping and operate at a different temperature than the temperature of the active line. -arbon steel piping systems, operating between 50 degrees 2 and !00 degrees 2.
e&posing areas to high$velocity and high$turbulence streams e&cessive cyclic stresses that are often very low e&posure to chlorides from salt water, wash$up water, etc. creep of the material by long time e&posure to high temperature and stress
If e&ternal or internal coatings or refractory liners on a piping circuit are in good condition, what should an inspector do+ a) b)
After inspection, remove the liner for /" che6 "he entire liner should be removed for inspection
c) d) 39.
*here can fatigue crac6ing typically be first detected+ a) b) c) d)
35.
c) d)
perating personnel (epair personnel urisdictional personnel 1esign personnel
"he minimum thic6ness at each "<8 can be located by a) b) c) d)
3.
"o satisfy ;urisdictional re%uirements "o determine the internal condition and remaining thic6ness of the piping components "o determine the e&ternal condition and amount of deposits inside the piping "o satisfy heat transfer re%uirements of the piping
*ho would normally report vibrating or swaying piping to engineering or inspection personnel+ a) b) c) d)
37.
At points of low$stress intensification such as reinforced no::les At points of high$stress intensification such as branch connections At points where cyclic stresses are very low At points where there are only bending or compressive stresses
*hy is thic6ness measurement inspection performed + a) b)
3!.
elected portions of the liner should be removed for inspection 8iner need not be removed if it is found to be in sound condition
electromagnetic techni%ues ultrasonic scanning or profile radiography hammer testing <" and = or P"
"<8s can be eliminated for piping systems with the following characteristics a) b) c) d)
>igher potential for creating a safety or environmental emergency in the event of a lea6. 8ow potential for creating a safety or environmental emergency in the event of a lea6. '&tremely low potential for creating a safety of environmental emergency in the event of a lea6.
3.
*hen pressure testing of piping systems are conducted, they shall be performed in accordance with the re%uirements of4$ a) b) c) d)
90.
"he preferred medium for a pressure test is ########## a) b) c) d)
9.
altered by screwing down the ad;usting screw reset to e&ceed the test pressure chec6ed or tested removed or blan6ed
Came a part of a piping system that thic6ness measurements are not normally routinely ta6en a) b) c) d)
99.
5 00 0 0
1uring a pressure test, where test pressure will e&ceed the set pressure of the safety relieve valve or valves on a piping system, the safety relief valve or valves should be ########## when carrying out the test a) b) c) d)
93.
steam air water hydrocarbon
If a non$to&ic hydrocarbon Bflammable) is used as the test medium, the li%uid flash point shall be at least ########## degrees 2 or greater a) b) c) d)
9.
A<' ?3.3 A<' ?@P -ode, ection III A ?!.5 API 50
elbows e&pansion loops tees valves
According to API 570, some welds in a piping system that has been sub;ected to radiography according to A<' ?3.3 4$ a) b)
will meet random radiograph re%uirements and will perform satisfactorily in$service without a hydrofest will not meet random radiograph re%uirements, and will not perform satisfactorily in$service even though hydrotested.
c) d)
will meet random radiograph re%uirements, and will not perform satisfactorily in$service after a hydrotest will not meet random radiograph re%uirements, but will still perform satisfactorily in$service after being hydrotested.
95.
*hen an (?I assessment is used to increase or decrease inspection intervals, the assessment shall be conducted on -lass systems at a ma&imum interval of ########## years a) 5 b) 0 c) 5 d) 3
9!.
8isted below are several e&les of a -8A piping system. *hich one does not belong+ a) b) c) d)
97.
-lass 3 piping is described as being in services a) b) c) d)
9.
with the highest potential of resulting in an immediate emergency if a lea6 occurs that are flammable but do not significantly vaporise when they lea6 and are not located in high$activity areas that are flammable and slowly vapori:e if lea6 occurs that are not in classes and .
"hic6ness measurement inspection on ciass piping should be scheduled based on the calculation of not more than a) b) c) d)
9.
Anhydrous hydrogen chlorideD >ydrofluoric acid Piping over or ad;acent to water supply lines 1istillate and product lines to and from storage and loading
one half the remaining life determined from corrosion rates or the ma&imum interval of 5 years whichever is shorter. one half the remaining life determined from corrosion rates or 5 years one fourth the remaining life determined from corrosion rates or the ma&imum interval of 0 years whichever is shorter. one %uarter the remaining life determined from corrosion rates or 5 years.
Eou have a new piping system that has ;ust been installed. It is completely new and no information e&ists to establish a corrosion rate. Also, information is no available on a similar system. Eou decide to put the system in service and C1" it later to determine the corrosion rate. >ow long do you allow the system to stay in service before you ta6e your first thic6ness readings +
a) b) c) d) 50.
"he ########## shall maintain appropriate permanent and progressive records of each piping system covered by API 570. a) b) c) d)
5.
an engineer the inspector the piping engineer the repair organi:ation
>ow often should above$grade visual surveillance of a buried pipeline right$of$way be made + a) b) c) d)
55.
at the end of the ;ob after the start of welding following the start of welding before the start of welding
2illet welded patches Blap patches) shall be designed by a) b) c) d)
59.
A longitudinal chec6 A circumferential crac6 Pits that are one half through wall Feneral corrosion in the longitudinal direction.
"he repair organisation responsible for welding shall maintain records of welding procedures and welder performance %ualifications. "hese records shall be available to the inspector 4$ a) b) c) d)
53.
inspector owner$user ;urisdiction e&aminer
*hat type of defect, corrosion, pitting and = or discontinuity should not be repaired by a full encirclement welded split sleeve + a) b) c) d)
5.
month 3 months ! months months
nce a month Appro&imately ! month intervals nce a year nce every 3 months
*hich of the inspection agencies listed below is Inspection Agency as defined in API 570.
NOT
an Authorised
a) b) c) d) 5!.
An e&aminer is a person who ########## the inspector a) b) c) d)
57. a. b. c. d. 5.
inaccessible welds Bunable to hand place a source side penetrameter) all welds all castings at any time an alternative to a source$side wire pentrameter "he accuracy of a piece of magneti:ing e%uipment that is e%uipped with an ammeter shall be verified 4
.5 3
*hen using a hydrophillic emulsifier versus a lipophilic emulsifier additional step that must be ta6en is4 a. b. c. d.
!.
'ach year 'ach two years *hen possible 'very ! months
Prior to e&aminations, each ad;acent surface shall be cleaned within at least #####G of the area to be P" e&amined. a. b. c. d.
!0.
supplants assists supervises directs
A filmside penetrameter can be used for4
a. b. c. d. 5.
urisdictional inspection organisation wner$user inspection organisation A"< inspection organisation Insurance agency inspection organisation
pre$flooding with emulisifier pre$cleaning with solvent pre$rinsing with water pre$washing with detergent
*hen using an emulsifier, it is applied on the weld during the 8PI chec6. a.
?efore final interpretation
!.
b. ?efore applying the penetrant c. After applying developer d. Cone of above All indications are to be evaluated in accordance with4 a. b. c. d.
!3.
"he scope of the A<' ?oiler and Pressure essel, -ode, ection includes4 a. b. c. d.
!9.
C1' acceptance criteria >ow to perform C1' to achieve a desired result *here to do C1' B i.e. what welds to e&amine ) Cone of above.
*hich C1' methods are considered GsurfaceG methods+ a. b. c. d.
!5.
A<' III A<' "he referencing -ode section "he written procedure
P" (" <" ?oth A @ - above
(emaining life of pipe circuit is determined by4 a. b. c. d.
2inding 2inding rate 2inding 2inding
out total length of piping circuit out actual thic6ness, re%uired thic6ness and corrosion out original thic6ness and corrosion rate out the elapsed life of the pipe
!!.
*hat width of indication is re%uired to demonstrate that a visual e&amination procedure is ade%uate per A<' + a. =3G b. =!G c. 3=3G d. Cone of the above
!7.
A<' ? !.5 does not cover4 a. b. c. d.
-lass 50 flanges -lass 300 flanged fittings ?utt welded pipe elbows All of the above
!.
*hen using radiographs to %ualify welder, the acceptance standards used are found in A. ?. -. 1.
!.
A<' ection A<' ection IH A<' ection II "he referencing code
*hat is the number of guided bend tests re%uired for Performance ualification in a !F position+ A. ?. -. 1.
70.
9 ! 3
A welder %ualified to weld in the F position on pipe would have to be %ualified in which of the additional positions to %ualify for all position groove welding on pipe+ A. ?. -. 1.
7.
F F 5F !F
As soon as possible after completing an inspection, the Inspector should4 a. b. c. d.
7.
review the inspection records and schedule the ne&t inspection always re%uire a hydrotest sign all (" records notify the Piping 'ngineer, so he can wa6e up and go home
"he :one for preheat shall e&tend4 a. b. c. d.
at least JK beyond each edge of the weld at least K beyond each edge of the weld over only the weld itself at a minimum K each side of the weld
73. *hat is the minimum time that a lea6 test must be maintained Ball ;oints and connections shall be e&amined for lea6s)+ a. b. c. d.
!0 95 30 0
minutes minutes minutes minutes
79. *hat type of problem would you e&pect in piping containing Amine+ a. b. c. d. 75.
A pressure test for piping, in most cases is a4 a. b. c. d.
7!.
c) d)
b) c) d)
embrittlement of the metal due to it operating below its transition temperature erosion or corrosion = erosion that thin the piping where it crac6s e&cessive cyclic stresses that are often well below the static yield strength of the material environmental crac6ing caused by stress corrosion due to the presence of caustic, amine, or other substance.
*hat are the preferred C1' methods for detecting fatigue crac6ing+ a) b) c) d)
7.
-orrosion under insulation in areas e&posed to steam vents /nanticipated acid or caustic carryover from processes into non$ alloyed piping -orrosion in deadlegs -orrosion of underground piping at soil$to$air interface where it ingresses or egresses
2atigue crac6ing of piping systems may result from a)
7.
lea6 test tress test ductility test trength test
An e&le of service$specific and localised corrosion is 4$ a) b)
77.
dissolved o&ygen crac6ing stress corrosion crac6ing galvanic corrosion crevice corrosion
'ddy current testing ultrasonic A$scan testing, and = or possibly hammer testing 8i%uid penetrant testing, magnetic particle testing . isual testing, eddy current testing and = or possibly ultrasonic testing Acoustic emission testing, hydro$testing, and = or possibly ultrasonic testing
*ater and a%ueous solutions in piping systems may free:e and cause failure because of the
a) b) c) d) 0.
*here should special attention be placed when ta6ing thic6ness measurements of an elbow+ a) b) c) d)
.
b) c) d)
8ow potential for creating a safety or environmental emergency in the event of a lea6
<" /" P" '"
*hen pressure testing of piping systems are conducted, they shall be performed in accordance with the re%uirements of 4$ a) b) c) d)
9.
outlet endD inlet end inside and outside radius sides
*hat is usually the most accurate means for obtaining thic6ness measurements on installed pipe larger than CP + a) b) c) d)
3.
the the the the
.
e&pansion of these materialsD contraction of these materials construction of these materials decrease of these materials
A<' ?3.3 A<' ?@P -ode, ection III A ?!.5 API 50
*hen a pressure test is not necessary or practical, what shall be utilised in lieu of a pressure test+ a) b) c) d)
CP Con$destructive e&amination acuum visual e&amination C?'
5.
1eadlegs of a piping system are4 a) b) c) d)
!.
the upstream piping of control valve manifolds supports attached to a pipeline that has no product in them the upstream part of an orifice runs sections that normally have no significant flow
API 57 gives rules for Alloy erification for4 a. b. c. d.
-arbon steel piping material for old or new piping Alloy steel piping materials, for old or new piping -arbon steel materials used for old piping only Alloy steels used for old piping only
7. API 57 re%uires at least ######### electrodes to be P
"he ########## shall be responsible to the owner$user for determining that the re%uirements of API 570 for inspection, e&amination, and testing are met. a) b) c) d)
.
Piping 'ngineer Inspector (epair rganisation perating Personnel
An (?I assessment can be used to alter the inspection strategy provided4 a) b) c) d)
0.
one two minimum 0L all
"he degradation methods are identified "he (?I is fully documented. A third party conducts the (?I ?oth A and ? above
*hy should deadlegs in piping be inspected + a) b) c) d)
API 570 mandates the inspection of deadlegs Acid products and debris build up in deadlegs "he corrosion rate in deadlegs can vary significantly from ad;acent active piping. -austic products and debris build up in deadlegs.
.
*hat are the preferred C1' methods for detecting fatigue crac6ing+ a) b) c) d)
.
'ddy current testing ultrasonic A$scan testing, and = or possibly hammer testing 8i%uid penetrant testing, magnetic particle testing. isual testing, eddy current testing and = or possibly ultrasonic testing Acoustic emission testing, hydro$testing, and = or possibly ultrasonic testing.
Eou are reviewing a *P B*$99) for a welder testing in the !$F position, on A$53 grade ? pipe B"$!0,000 psi). "he test results indicate the following 4 Co. Co. Co. Co.
"ensile developed 5,000 psi, bro6e in the weld "ensile developed 5!,00 psi, bro6e in base metal "ransverse root bend satisfactory "ransverse face bend satisfactory
*ill these tests %ualify the welder+ A. ?. -. 1. 3.
Ees Co Cot enough information given "ension test is acceptable but Co. is unacceptable
*hen chec6ing austentic materials for crac6s using P" methods only li%uid penetrants4 a. b. c. d.
with with with with
low or no nitrides should be used. low or no carbides should be used. high or medium chlorides should be used. low or no chlorides should be used.
