API 570 PC 3Sept05 Final Open

Professional Training and Consultation API 570 Preparatory Preparatory 3 – 8 September 2005, Al-Khobar Page 1 of 13

FINAL EXAM (OPEN) Instructions:

Choose only one alternative, alternative, which you think is most appropriate. Use attached answer sheet. You may refer to the applicable ASMEA!" ASMEA!" documents.

1.

The The fol follo lowi wing ng data data is pres presen ente ted d for for a cla class ss 2 pip pipe, e, Thickness = 0.36 inch (after inspection) Corrosion rate = 10 mp !emaining life = 16 ears "hen is the ne#t thickness meas$rement inspection d$e% a. . c. d.

2.

lea lease se cal calc$ c$la late te rem remai aini ning ng cor corro rosi sion on all allow owan ance ce for for pip pipin ing g in -$estion 1 ao+e. a. . c. d.

3.

0.20 0.20 0.2' 0.2' 0.12 0.16 0.16

inc inch inc inch in inch inc inch

"hen will e the ne#t inspection sched$le from now on for e#ternal inspection for pipe in -.1% a. . c. d.

.

&fter ' ears &fter  ears &fter 10 ears *one of the ao+e

10 ears ' ears  ears none of the ao+e

The The pip pipe e in in -.1 -.1 ao+ ao+e e has has an ins$ ins$la late ted d area area of 200 200 s/. s/. ft. ft., whi which ch is e#posed to s$sceptile temperat$re and mist spra of cooling tower. &ccording to & 0, how m$ch of minim$m area is recommended for *T s$r+e for C d$ring e#ternal inspection% a. 100 100 s/$ s/$ar are e fee feett . 0 s/$a s/$are re feet feet c. 66 s/$a s/$are re fee feet d. 10 s/$are feet

_________________________ ______________________________________ __________________________ _________________________ _________________________ __________________________ __________________________ _________________________ _________________________ _____________ /var/www/apps/conversion/tmp/scratch_5/236812576.doc 7/3/2014 / 8:52:01 AM /!"

Professional Training and Consultation API 570 Preparatory 3 – 8 September 2005, Al-Khobar Page 2 of 13

FINAL EXAM (OPEN) .

& -! is to e /$alified $sing 4' inch thick test co$pon. t can /$alif thickness5 a. . c. d.

6.

The recommended minim$m de+elopment time (enetrant Testing) allowed for a material made of high temperat$re allo is5 a. . c. d.

.

1. to  2. to 3.9 2.0 to .0 *one of the ao+e

:or piping $ried in soil with resisti+it of 0007ohm cm and not cathodicall protected, e+al$ations of pipe thickness sho$ld e performed at5 a. . c. d.

9.

 min 10 min  min 6 min

& radiograph was ha+ing densit near the penetrameter e/$al to 3.0. 8ence the acceptale densit range of the radiograph is5 a. . c. d.

'.

14' to 1714 1416 to 4' 1416 to 1714 *one of the ao+e

10 ear inter+al  ear inter+al 3 ear inter+al *one of the ao+e

:or a certain *at$ral gas piping sstem, which is in 16 ears, it is estimated that it has remaining life Considering the stip$lation of & 0, which of the determine ma#im$m inter+al for ne#t proposed date meas$rement e#amination and +is$al e#amination%

operation for of 12 ears. following will for thickness

_______________________________________________________________________________________________________________________________ /var/www/apps/conversion/tmp/scratch_5/236812576.doc 7/3/2014 / 8:52:01 AM /!"


FINAL EXAM (OPEN) a. . c. d. 10.

6 ears and  ears respecti+el 3 ears and 10 ears respecti+el 10 ears and  ears respecti+el 6 ears and 6 ears respecti+el

&n nspector finds incomplete penetration of 2mm in a radiograph of a girth weld of normal fl$id ser+ice piping 12 mm thick. Can he accept as per &;< >31.3% a. f the incomplete penetration is greater than 1 mm, re?ect. . f the incomplete penetration is more than 1 mm $t still less than 0.2 times pipe thickness, accept. c. epends on opinion of inspector d. !adiograph again and then decide on acceptance.

11.

@o$ are planning for the 8dro7test of a piping with 8dro test press$re 0Ag4cm 2g. The calirated test ga$ges a+ailale with o$ are 070 Ag4cm2g, 07100 Ag4cm2g, 1710 Ag4cm2g and 07200 Ag4cm2g. "hich two ga$ges are acceptale for this test% a. . c. d.

12.

"hat wo$ld o$ e#pect to happen if o$ were taking T readings on piping that was operated higher than 200 degrees :% a. . c. d.

13.

07100 Ag4cm2g and 0710 Ag4cm2g 070 Ag4cm2g and 07100 Ag4cm2g 07100 Ag4cm2g and 07200 Ag4cm2g 070 Ag4cm2g and 07200 Ag4cm2g

The thickness readings co$ld e lower. The thickness readings wo$ld not e infl$enced. The thickness readings co$ld e ao$t 1B higher for each 100 degrees : rise of temperat$re. The thickness readings ma e higher or lower depending on co$plant.

& welded part is to e radiographed and is 1 thick, with 14' reinforcement. "hat &;T< wire set - sho$ld e $sed on these radiographs if a so$rce side techni/$e is $sed%



FINAL EXAM (OPEN) a. . c. d. 1.

;et ;et ;et ;et

& > C 

The doc$ment referenced in & 0 for determining fitness for ser+ice of piping sstem is5 a. . c. d.

& 9 &  &;< > 31.1 *one of the ao+e

1. $ring impact testing of & 106 gr> (eo#idised) and &3 gr> pipes (non7deo#idised), following asored energ +al$es in ft7l were oser+ed5 & 106 gr> 5 12., 13. , 12 & 3 gr> 5 11, 11. , 9 @o$r assessment is5 a. . c. d.

>oth >oth Dnl Dnl

&106 and &3 are acceptale &106 and & 3 shall e re?ected &3 gr> can e accepted 106 gr> shall e accepted

16. & -! test was made on & 106 grade C pipe. This will /$alif which of the following sets of materials5 a. . c. d. 1.

& 106 gr >, &36 , & 1'2 :1 & 10, &16 gr 60, &16 gr 0 1 gr 0, & 2' gr C, & 33  11 *one of the ao+e set is f$ll /$alified  this -!.

Caron percentage cannot e detected  #7ra fl$roscence method eca$se this method cannot detect materials5 a. . c. d.

Eighter than s$lpher 8ea+ier than s$lpher >lack in color "hich are radioacti+e



FINAL EXAM (OPEN) 1'.

"hen a T test cannot e cond$cted etween 1072 degree C (0 degrees : F 12 degrees :) what m$st e done, as per &;< ;ec. G% a. . c. d.

& new proced$re m$st e /$alified $sing s$itale penetrant materials. The s$rface m$st e re7cleaned. The test cannot e cond$cted. se the dwell time for penetrant and de+eloper as per Tale in &rticle 6 of &;< ;ec. G.

19. & piping sstem is to e pne$maticall press$re tested. ts esign ress$re is 160 psig. The first stage press$ration, the test press$re and inspection press$re respecti+el will e5 a. . c. d.

'0 psi, 16 psi, 160 psi 2 psi, 200 psi, 16psi 2 psi, 16 psi, 160 psi none of ao+e

20. ;elect s$itale 8ole tpe (so$rce side) penetrameter for following weld ?oint5

Weld reinf. = 1/8" thk

7/8"

H )

a. . c. d.

Backing strip = 3/16" thk

*o 20 *o 2 *o 30 *one of the ao+e



FINAL EXAM (OPEN) 21.

f tpe of penetrameter in ao+e /$estion is changed to wire tpe what shall e the wire designation (wire decimeter in inch)% a. . c. d.

22.

:or steel plates and welds to e checked  E, what shall e the penetration time for penetrant% a. . c. d.

23.

0.02 (*o. 10) 0.016 (*o. ') 0.032 (*o. 11) *one of the ao+e

10 min for weld,  min for plate  min for oth 10 min for oth  min for weld, 10 min for plate

&fter appling the de+eloper the e#aminer checked fo$r welds for s$rface defects after following period, weld & F after  min$te, weld > after 10 min$tes, weld C was checked after 30 min$tes and welds  after 6 min$tes. "hich of the welds were checked wrongl% a."eld & ."eld C c."eld  d."eld &

2.

and > and  onl and 

n a certain -! for ;<&", the electrodes $sed for all passes were of &"; classification ( 01'). Corresponding "; also showed filler materials as  01'. *ow the man$fact$rer proposes to change the filler material in "; to  01. "ill o$ ask man$fact$rer to5 a. . c. d.

-$alif new -! with  01 electrodes. !e+ise onl "; showing the change from  01' to  01 and s$mit "; as a new re+ision. !e+ise onl the -! doc$ment showing the change and res$mit for appro+al. !e+ise oth "; and -! showing the change and res$mit for appro+al.



FINAL EXAM (OPEN) 2.

&ct$al thickness meas$red at a T
26.

stimated rate of ;$lphidation corrosion for a cr$de handing e/$ipment d$e to s$lpher content of 0.B ( weight) at 600 0: is 10 mp. "hat will e the corrosion rate if s$lpher content is 1.0B  weight% a. . c. d.

2.

10 12 1 20

mp mp mp mp

appro#imatel appro#imatel appro#imatel appro#imatel

;$ggest s$itale constr$ction materials for ca$stic ser+ice ha+ing 0B *a08 concentration ( weight) operating at 20 0: a. . c. d.

2'.

0. inch 0.3 inch 0.2' inch *one of the ao+e

Caron steel with "8T Caron ;teel, $t "8T is not re/$ired Caron steels with /$enched and tempering treatment Consider se of *ickel allos.

To a+oid 8T8&, s$ggest s$itale materials of constr$ction for hdrogen ser+ice with partial press$re of hdrogen = 100psi, and temperat$re = '000: a. . c. d.

Caron steel 1.2 Cr F 0.


FINAL EXAM (OPEN) 29.

n tpical refiner ser+ice, "8T of 2.2 Cr F 1
30.

8igher than 21 >rinell Eower than 21 >rinell 8igher than 22 >rinell Eower than 22 >rinell

"hile oser+ing radiographic film for weld with ;<&" process showed indication of following description. & localiHed darker densit with f$HH edges in the center of the width of weld image. This indication most likel represents5 a. . c. d.

#cessi+e penetration Eack of penetration Cl$ster porosit >$rn thro$gh


Professional Training and Consultation API 570 Preparatory 3 – 8 September 2005, Al-Khobar Page  of 13

FINAL EXAM (OPEN) SOLUTION Q.1

!emaining life = 16 ears Thickness meas$rement inter+al = J remaining life or 10 ears K $se lower (!ef.5 & 056.3 and Tale 671) &nswer5 a (!ef.5 .1.1 of & 0)

Q.2

!emaining C.&.

= !emaining life # Corrosion rate = 16 # 10 = 160 mils sa 0.16

&nswer5 d (!ef5 .1.1 of & 0)

Q.3

&nswer5 c

(!ef.5 Tale 671)

Q.4

&nswer5 c

(!ef.5 Tale 672)

Q.5

&nswer5 d (!ef.5 &;< ;ec. L, Tale 1.1) -$alified thickness is 3416 to 1 M

Q.6

Tale in &rt. 6 of &;< ;ec. G shows de+elopment time of 10 min$tes for all materials. &nswer5 

Q.7

&;< ;ec. G, &rt. 2. ensit +ariation in 71B to N30B &nswer5 

Q.8

!ef.5 Tale 971 of & 0 &nswer5 a

Q.9

*at$ral gas is Class 2 fl$id (!ef.5 6.2.2 of & 0)



FINAL EXAM (OPEN) !efer Tale 671 of & 0 &nswer5 a

Q.10 !efer Tale 31.3.2, pages  and ' from &;< >31.3 ncomplete penetration permitted is 1mm for letter > for normal fl$id, girth weld.

&nswer5 a

Q.11 !efer &;< ;ec. G (Eeak Testing F &rt. 10). The range for press$re ga$ges is5

0 to 1 J times 0 to  times

(minim$m range) (ma#im$m range)

for gi+en e#ample, 0 F 60 (minim$m) and 0 F 160 ma#im$m &nswer5 a Q.12 !efer ;79 from ;ection G. !efer paragraph no. '.

&nswer5 c Q.13 !efer &rt. 2, &;< ;ec. G. - is on so$rce side. "e need wire no. 9 for thickness=1 "ire no. 9 will e in ;et >.

&nswer5 

Q.14 !ef. ;ection 2 of & 0 age 271

&nswer5 a _______________________________________________________________________________________________________________________________ /var/www/apps/conversion/tmp/scratch_5/236812576.doc 7/3/2014 / 8:52:01 AM /!"


FINAL EXAM (OPEN)

Q.15 :or deo#idiHed steel (&106 gr>, T.; = 60,000 psi) &+erage re/$ired = 13 ft l, min 10 ft l for one. :or non7deo#idised steel (&3 gr>, T.; = 60,000 psi) &+erage re/$ired 10 ft4l and min for one =  ft l

&+erage for &106 gr> =

&+erage for &3 gr> =

12.5 + 13.5 + 12 3

11 + 11.5 + 9 3

= 12. O 13

= 10. P 10 ft l

31.3, page )

Q.16 & 106 grC pipe elongs to  *o. 1 material. ;o it will /$alif onl  *o. 1 materials. & 10, & 16 gr60 and &16 gr0 are  *o. 1 materials. !efer Tale -"722 from &;< ;ec. L.

&nswer5  Q.17 !efer & ! ', paragraph .2.1

&nswer5 a

Q.18 !efer dwell time tale in &rt. 6, &;< ;ec. G. ;ee the note elow the tale.

&nswer5 a

Q.19 !efer &;< >31.3, age '6, 3.

&nswer5 c



FINAL EXAM (OPEN) Q.20 !efer &;< ;ec. G, &rt. 2 !efer Tale for selection of - !e/$ired - is *o. 2.

&nswer5 

Q.21 !efer &;< ;ec. G, &rt. 2. !e/$ired wire is no. 9.

&nswer5 d

Q.22 !efer dwell time in &rt. 6 of &;< ;ec. G.

&nswer5 d

Q.23 !efer &rt. 6, &;< ;ec. G F nterpretation nterpretation shall e etween  mins to 60 mins

&nswer5 d

Q.24 !efer &;< ;ec. L F Tale for : *os. 01' and 01' are oth : *o. =  ;o same -! is DA. Dnl re+ise ";.

&nswer5  Q.25 !efer & 0 age 72 for <&" thickness $sed shall e &ct$al Thickness min$s twice the corrosion loss $p to ne#t inspection.

0. F 2 # 0.01 # 6 = 0.2' inch &nswer5 c Q.26.!efer to & 1 :ig.  F 66.

&nswer is5 > Q.27.!efer to & 1 :ig.  F '. _______________________________________________________________________________________________________________________________ /var/www/apps/conversion/tmp/scratch_5/236812576.doc 7/3/2014 / 8:52:01 AM /!"


FINAL EXAM (OPEN) &nswer is5  Q.28.!efer to & 1 :ig.  F 3.

&nswer is5 C Q.29.!efer to &  Tale 11.

&nswer is5 & Q.30.!efer to !adiographic :ilm, :ig$re 3', & .

&nswer is5 

777777777777777777777777777777777777nd7777777777777777777777777777777777


API 570 PC 3Sept05 Final Open

Recommend Documents