API 570 Model question-1 The following is a collection of questions remembered by various students who took API 570 exam in the ast! The answers will be found in the following reference ublications API 570, RP 574, RP 578, ASME Sec.V, Sec.IX, B 1. ! B 1".5#$% "!
#hat is the the height of the raised face face on regularly regularly furnished class $00 %aised &ace &langes' &langes' A! 0!0( )! 0!0* +! 0!"* ,! 0!-5
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In a iing system1 system1 2P. 31 .4. .4. material A65$ A65$ rade rade )1 the thickness thickness near near a wel is 0!"89! 0!"89! The system is designed designed to oerate at (75 P.I at 500:&! #hat is the actual remaining corrosion allowance' A! 0!07( )! 0!080 +! 0!0*" ,! 0!"
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#hich #hich of the the A! )! +! ,!
following following are are nonesse nonessentia ntiall variables variables for for .4A#' .4A#' +han +hange ge of elec electr trod ode e +hange +hange in the groov groove e desi design gn +han +hange ge in the the P#; P#;T T +hange +hange in the the wel weldin ding g roces rocess s
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#hen designating designating an in
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A rocess in which a ferrous ferrous metal metal is heated heated to a suitable suitable temerature temerature above the the transformation transformation range range and is subsequently cooled in still air at room temerature is referred to as ' A! quenching )! 2orm ormali=i li=in ng +! Annealing ,! .olu .oluti tion on hea heatt trea treati ting ng
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>ne advan advantage tage of isotoe isotoe radiogr radiograhy ahy is is it A! #ill #ill detec detectt all all defec defects ts in a ie ie weld weld )! +an be be erform erformed ed by anyone anyone with with littl little e or no trainin training g +! +an not not su suly ly a erma ermane nent nt visua visuall record record ,! Is not an an ignition ignition source source in the the resence resence of hydroca hydrocarbons rbons
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A iing circuit1 $00?long1 $00?long1 oerates oerates at 500:&! 500:&! #hat is the the linear thermal thermal exansion of the the circuit if the the circuit was was constructed using A "0(6) iing' A! $!(- in inches
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7!-3 inches "0!8( inches "3!38 inches
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An emloyer A! )! +! ,!
may accet a erformance qualification made for another emloyer rovided the Insector secifically aroves Piing engineer aroves Action is allowed by A.4@1 .ection >ther emloyer is a subcontractor for the current emloyer
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uided bend secimens for welder qualifications shall have no oen defects in the weld or heat affected =one exceeding A! "/"(9 )! "/89 +! $/"(9 ,! no oen defects allowed
.ection/age %eference Publication "0! The insector is reviewing a radiograh of a ie weld1 the ie wall is B9 thick! #hat is the hole tye ICI designation if the enetrameter is laced on the source side' A! ")! "5 +! "7 ,! -0 .ection/age %eference Publication ""! In a iing system1 the most suscetible location for cracking is A! Around suorts )! In welds +! In bolting ,! In the areas of temorary clams .ection/age %eference Publication "-! #hat is the A! )! +! ,!
DP92o! for .A 3"3 rade A' " $ "")
.ection/age %eference Publication "$! #hat is the minimum thickness of a class "500 2P. 3 blind flange' A! "!"-9 )! "!889 +! -!"-9 ,! -!889 .ection/age %eference Publication "3! The reheat A! )! +! ,!
=one shall extend at least beyond each edge of the weld (T "- inches E$0cmF wall thickness divided by $ -5 mm E" inchF
.ection/age %eference Publication "5! ,uring rocedure qualification1 how many nick6break secimens are required if the ie is 2P. 8 ./801 0!500 wall' A! "
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.ection/age %eference Publication "(! The owner/user shall maintain aroriate ermanent and rogressive records of each iing system! The records shall include A! All original construction data )! .ystem serviceG classificationG identification numbers +! All A.4@ requirements ,! >riginal heat and batch numbers of the system .ection/age %eference Publication "7! The maximum carbon content of a mild steel weld deosit is A! 0!"5H carbon )! 0!-0H carbon +! 0!$0H carbon ,! 0!"7H carbon .ection/age %eference Publication "8! #hat is the A! )! +! ,!
recommended reheat temerature for " 9 thick carbon steel' $00:& -$5:& "75:& 2one
.ection/age %eference Publication "*! An alternative to insection of buried iing is to leak test the system with liquid at a ressure at least A! " B times the 4aximum oerating ressure )! " times the 4aximum oerating ressure +! "0H greater than the 4aximum oerating ressure ,! Actual .ection/age %eference Publication -0! The & number of .&A65!" J 5!5 isK A! " )! +! $ ,! All of the above .ection/age %eference Publication -"! As a art of A! )! +! ,!
general maintenance1 any reair organi=ation may make reairs to a iing system as long asK The insector is satisfied with the cometency of the reair organi=ation The iing engineer is on site The reair organi=ation has a contract Their hourly rate is accetable
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Lero Eno evident imerfectionsF M "/$- inch M " mm )oth ) and +
.ection/age %eference Publication -3! +hanging the weld rogression from uhill to down hill will have a ma
eliminated for iing systems with which of the following characteristicsK high otential for creating an emergency in the event of a leak extremely corrosive systems low otential for creating an emergency in the event of a leak iing systems in cyclic conditions at high ressures and temeratures
.ection/age %eference Publication -8! #hen determining the corrosion rate1 the formulas from API 570 may be used orK A! Published data on iing system in comarable service )! >wner/user?s exerience +! )udget restraints ,! )oth A and ) .ection/age %eference Publication -*! The owner/user shall maintain aroriate ermanent and rogressive records about each iing system covered by API 5701 this may be done byK A! The insector?s memory )! The ro
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