API 577_______ for the
API 577_______ for the training and experience training and experience required to be required to be an American Wean American Weldinglding Society Certified
Society Certified WeWelding Inspector๎CWI!lding Inspector๎CWI! is not a replacement
is not a replacement
API 577______ all "elds to be inspected# API 577______ all "elds to be inspected# does not require
does not require
Who determines the "elds to be inspected$$ Who determines the "elds to be inspected$$ We
Welding inspectors and/or lding inspectors and/or engineersengineers
Who should be consulted on any critical % speciali&ed or complex "elding issues$ Who should be consulted on any critical % speciali&ed or complex "elding issues$ A welding engineer
A welding engineer
'hree of the items listed belo" are "elding inspection acti(ities that can be separated into 'hree of the items listed belo" are "elding inspection acti(ities that can be separated into three stages corresponding to the "elding "or) process# Which one does not belong$$ three stages corresponding to the "elding "or) process# Which one does not belong$$ Ta
Tasks in selecting sks in selecting personnelpersonnel
Which of the basic arc "elding processes is the most "idely used$ Which of the basic arc "elding processes is the most "idely used$ SMAW
SMAW
*o" is shielding pro(ided for the
*o" is shielding pro(ided for the arc "hen using a consumable arc "hen using a consumable co(ered electrode inco(ered electrode in shielded metal
shielded metal
Shielding is provided from the decomposition of the
Shielding is provided from the decomposition of the electrode coveringelectrode covering What are some disad(antages or limitations of shielded metal
What are some disad(antages or limitations of shielded metal arc "elding$arc "elding$ Deposition rates are low and slag must be removed
Deposition rates are low and slag must be removed at stops and starts.at stops and starts. What does the +C,-
What does the +C,- stand for "hen used stand for "hen used to describe the to describe the .'A.'AW W "eld process$"eld process$ D๎!" stands for direct current electrode#negative .
D๎!" stands for direct current electrode#negative .
What are some of the ad(antages to gas tungsten arc "elding $ What are some of the ad(antages to gas tungsten arc "elding $ $t produces high purit% welds and it allows for e&c
What is a "elding process that produces fast a free&ing "eld pool and is generally suited for ย /oining thin sections or root passes#
'MAW#S
What type of "eld process normally employs a semiautomatic mode and depends on a flux from a tubular electrode that contains a shielding gas from an externally supplied gas$ (๎AW
What type of "elding is used extensi(ely in shop pressure (essel fabrication and pipe manufacturing$
SAW
What type of "elding process is predominantly limited to "elding insulation and refractory support pins to tan)s% pressure (essels and heater casings$
SW
What is the definition of non0destructi(e examination$
$t is inspection methods)which allow materials to be e&amined without chan ging or destro%ing their usefulness.
What are the most commonly used -+, methods used during "eld inspection $ -1',2 S,3,C' '*, A-SW,4 '*A' *AS A33 '*, C144,C' ๎,'*1+S6666
*T) MT) W(MT) +T) ,T) !T) -T) ๎T) A๎(M.
Where "ould you loo) for slag inclusion discontinuities$ Weld metal ๎one and weld interface.
Which -+, method is the most acceptable for a lap /oint $ +T
What is the most capable -+, method for finding a discontinuity such as incomplete fusion in a /oint $
๎T
When "elding carbon steel% "hat is the ma/or cause of lac) of fusion in all "elding processes$
When "elding stainless steel "hat "ould cause porosity in the "eld$
$mproper shielding) not using a low h%drogen electrode) 0 welding in a high sulfur area. When "elding stainless steel% "hat is the cause of undercut$
fast travel speed.
When "elding carbon steel% ho" "ould you control burn through$ use proper heat input
'he Alternating Current ๎ield ๎easurement ๎AC๎๎! technique is an electromagnetic non0 contacting technique that is able to detect and si&e surface brea)ing defects in a range of different materials and through coatings of (arying thic)ness# 'his technique is ideal for inspecting2
ย "o๎๎les) ring#grooves and grind#out areas or radii.
What is the maximum temperature that AC๎๎ may be used$ 122 (
What are the 8 typical radioacti(e isotopes used for radiography$ $ridium 314 or ๎obalt 52
What is the normal de(eloping time for radiographic film at 9: ๎$ 6 to 7 minutes
'he transmitted film density through the radiographic image through the radiographic image through the body of the hole type I;I or ad/acent to the "ire I;I% in the area of interest% should be "ithin the range of ______ for .amma
4.2 to 8.2
4adiographic _________ is the art of extracting the maximum information from a radiographic image#
interpretation
*o" many cycles per second ๎no" )no"n as *& or *ert& ! us classified as being in the ultrasonic frequency range$
What type of <' technique is used for thic)ness e(aluation or to chec) for laminations% and=or other conditions $
Straight beam
What does a C0scan display sho"$ $t shows a plan view of the test ob;ect
'he temperature of the calibration standard should be "ithin _______ of the part to be examined #
46 (
What happens if during a system calibration chec)% it is determined that the <' equipment is not functioning properly$
All areas tested since the last calibration should be ree&amined
Solid metals are _______ in nature and all ha(e a structure in "hich the atoms of each crystal are arranged in a specific geometric pattern#
cr%stalline
metals in molten or liquid state solidify % Interloc)ing grains into a solid metallic structure called a 2
casting
the (ast ma/ority of metallic materials used for the fabrication of refinery and chemical plant equipment are used in the___ form rather than cast
wrought
๎echanical "or)ing of a cast ingot produces ____ materials by processes such as rolling%forging% or extrusion%"hich are normally at an ele(ated temperature
wrought
'he addition of ___ to austenitic stainless leads to the formation of a (ery small iron and chromium carbide precipitates in the grains and at grain boundaries
Carbon steel is a t"o0phase alloy#1ne phase is a relati(ely pure form of iron called
ferrite#With the addition of more than >#>9? percent of carbon% a second phase is formed called_____#'his adds strength to steel
ย pearlite
lamellar means 2 a plate#like
'he parts of a "eld comprises three &ones#What are these &ones $ the weld metal )the heat affected metal <๎one=) an d the base metal
'he portion of the base metal has not been melted%but "hose mechanical properties or microstructure ha(e been altered by the heat of "elding is called the2
heat affected ๎one
What happens to the gas %carbon dioxide% "hen it is exposed to "eld arc temperatures $ it breaks down into carbon and o&%gen
'he primary purpose for preheating carbon and lo"0alloy steels is 2 to reduce the tendenc% for h%drogen induced dela%ed cracking
*o" far on each side of the "eld should be preheat be maintained $ 4 inches
'he primary reason for post0"eld heat treatment ๎PW*'! is to2 relieve the residual stresses in a welded fabrication
What is the @rinnell hardness limit (alue for carbon steel in reining ser(ice $ 422
"hat are the t"o types of material test reports $ a heat anal%sis and a product anal%sis
typically %steels "ith a carbon equi(alent of less that___ require no preheat 2.>6
Steels "ith a carbon equi(alent of higher than ___ require both preheat PW*'# 2.66
What are the t"o main concerns "hen "elding on in ser(ice piping and equipment $ ย burn through and cracking
hot tap and in ser(ice "elding operations should be carried out only "ith lo"0hydrogen consumables and electrodes such as 2
!?237
carbon steels "ith a carbon equi(alent ๎C,! greater than ___ should be "elded "ith an extra lo" hydrogen electrode such as ,๎๎๎๎0*B #
2.8>@
liquid flo" rates in piping to be hot tapped shall be bet"een __ feet per second and ___ feet per second
3.>)8.2
ho" much liquid should be abo(e the area that is to be hot tapped on a storage tan) or (essel$
> feet
What si&e electrodes should be used on the first "eld pass on a hot tap or an in0ser(ice "eld on piping or equipment less than ๎=B inch thic)$
>/>4 inch or smaller
"hen using S๎AW% "hat do the first t"o numbers of ,7>๎: electrode identify $ ?2222 psi ultimate strength
"ith a S๎AW electrode AWS designation % the Bth character represents "hat$๎,๎๎๎๎! ย position
If a "elder ma)es unacceptable production "elds% the inspector must identify and
quarantine all the improper "eldments made by the "elder # 'he "elder is than retested and fails his test# What is the nest step $
