1.
Whic Which h doc docum umen entt giv give es the the meth method odol olog ogy y for for RBI? RBI? a. . c. d.
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15!3 5!3 11!3 1$53
arer ar er chem hemica ical (tra trace cer* r* is use sed d for for tes testin ting the und undergr rground und &i&es for the &ur&ose of+ a. . c. d.
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2ight 2ight hours hours shall shall not e/ceed e/ceed 53 53 ,our ,our hours hours shall shall not not e/ceed e/ceed 53 53 -)enty four four hours hours shall shall not not e/ceed e/ceed 1!3 1!3 -)enty four four hours hours shall not not e/ceed e/ceed 53
In &ressure4decay method for testing underground &i&es mini minimu mum m lea lea test test &re &ress ssur ure e is 6666 666666 6666 663 3 of ma/i ma/imu mum m o&erating &ressure. a. . c. d.
5.
,ive ,ive year years s -hre -hree e ye years ars -en ye years ars i/ years ars
In &re &ressure sure dec decay meth metho od for for testi sting unde underr gro ground und &i&e &i&e the the acce&tance criteria is that &ressure decrease over over a &eriod of+ a. . c. d.
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57 579 57! 5" 5"! 57#
%Pi& %Pi&e e to so soil il &ot &oten enti tial al sur surve vey' y' for for &oor &oorly ly coa coate ted d &i&e &i&es s (or (or )her )here e cath ca thod odic ic &rot &rotec ecti tion on is no nott reli relia ale le** shou should ld e co cond nduc ucte ted d at intervals of+ a. . c. d.
0.
API API API API
8hecing internal smoothness of &i&e 8hecing st strength an and du ductility of of &i &i&ing ma material 8hecing the diameter of underground &i&e etecting and locating the leas in the &i&e line
2/c 2/ce&t for for the cla clas ss #5! #5!! valve lves the the valve lve )all )all thi thicn cness is 666666 times the thicness of a sim&le cylinder designed for a stress of 6666666 &si for similar &ressure and tem&erature. tem&erature. a. 1.1 times times and 7!!! 7!!! &si &si . 1.5 times times and and 15!! 15!!! ! &si &si c. 1.$5 1.$5 time times s and and 15!! 15!!! ! &si &si
d. 1.5 times and 7!!! &si 7.
-he retirement thicness of valves and flanged fittings can e com&uted using formula for &i&es y using+ a. . c. d.
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of of of of
1.5 and the stress ; 15!!! &si 1.$5 and stress ; 7!!! &si 1.5 and allo)ale stress as &er A2 B 01.0 1.5 and stress ; 7!!! &si
-em&orary re&airs of locally thinned sections or circumferential linear defects may e made on4stream y installing a &ro&erly designed and faricated olted lea clam&. What )ould this activity e termed as? a. . c. d.
9.
,actor ,actor ,actor ,actor
Welding re&air (on4stream* Permanent re&air
,ollo)ing ins&ection data is availale for a &i&ing circuit. inimum re>uired thicness ; !.#$$ in Actual thicness measured ; !.51$ in ong term corrosion rate ; !.!1" in @ year Remaining life for this circuit )ill e+ a. 5.! years . #.5 years c. :.! years d. ata is insufficient to calculate remaining life
1!.
Pi&ing classifications (class 1 $ 0* in API 57! )ill res&ectively mean+ a. . c. d.
11.
o) medium and high &ressure &i&es =igh medium lo) &ressure &i&es o) medium high level of ins&ection to e &erformed =igh medium lo) level of ins&ection to e &erformed
Ins&ection records contain the follo)ing information for a &articular thicness measurement location (-* in a return end+ Thickness
Year
!.5!! !.#$5
! 5
!.#!!
1!
n the asis of the information aove the long4term corrosion rate for the location is+ a. . c. d. 1$.
,or thicness measurement of &i&es
ue em&loyed )ould e+ a. . c. d.
10.
Cltrasonic techni>ue Radiogra&hic &rofile techni>ue Anyone is D
If &roale corrosion rates can not e determined on4stream determinations shall e made a&&ro/imately a. . c. d.
1#.
1 mils &er year 5 mils &er year 1! mils &er year 1!! mils &er year
: months of service 0 months of service 1 month of service
-hicness monitoring during &eriodic measurements is taen at+ a. ame - as used in &revious ins&ection and a&&roaching retirement thicness .
15.
,or calculating AWP of Pi&ing 8ircuit )hich is &ut in service the )all thicness used in com&utations is+ a. Actual thicness as determined y ins&ection. . Actual thicness minus the estimated corrosion loss efore the date of ne/t ins&ection c. Actual thicness minus t)ice the estimated corrosion loss efore the date of ne/t ins&ection d.
1:.
-ale :4$ of API 57! standard gives e/tent of 8CI ins&ection follo)ing the visual ins&ection )hich is a&&licale to+ a. 2ntire insulated area . Areas )ith damaged insulation
c. us&ect areas )ithin susce&tile tem&erature d. and c 17.
As &er API 57! for olted flanged Eoints olts and nuts are considered as acce&taly engaged if the lac of com&lete engagement is+ a.
1".
When an RBI assessment is used to increase ins&ection intervals the assessment shall e conducted on 8lass 1 systems at a ma/imum interval of 6666666666 years a. . c. d.
19.
5 1! 15 0
8lass 0 &i&ing is descried as eing in services a. With the highest &otential of resulting in an immediate emergency if a lea occurs . -hat is flammale ut do not significantly va&oriFes )hen they lea and are not located in high4activity areas c. -hat is flammale and slo)ly va&oriFe if lea occurs d. -hat is not in classes 1 and $.
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-hicness measurement ins&ection on 8lass 1 &i&ing should e scheduled ased on the calculation of not more than
a. ne half the remaining life determined from corrosion rates or the ma/imum interval of 5 years )hichever is shorter. . ne half the remaining life determined from corrosion rates or 5 years )hichever is longer c. ne fourth the remaining life determined from corrosion rates or the ma/imum interval of 1! years )hichever is shorter. d. ne >uarter the remaining life determined from corrosion rates or 5 years )hichever is longer 4444444444444444444444444444444442nd4444444444444444444444444444444444444
ANSWER KEY
G. <. 1 $ 0 # 5 : 7 " 9 1! 11 1$ 10 1# 15 1: 17 1" 19 $!
A<W2R 8 A B 8 8 8 A 8 B B A 8 B A B A