ML20214E810
| ML20214E810 | |
| Person / Time | |
|---|---|
| Site: | Braidwood  |
| Issue date: | 06/24/1986 |
| From: | AFFILIATION NOT ASSIGNED |
| To: | |
| References | |
| OL-A-048, OL-A-48, NUDOCS 8705220262 | |
| Download: ML20214E810 (25) | |
Text
5 bD f 56 dlf f ~6{
k"Y E,
% y/r6 M ETA LS ENGINEERING INSTITUTE American Welding Societ COURSE 36 TEST 5 American Society for Meti WELDING, JOINING AND CUTTING PROCESSES - I Metals Park. Olde 64073 8
m mr vous m wo 4aonssa natow Page 1 of 2 u (A m a le v o. Rc+ c l 4 P-3 8-% 3
,,,,, 3 6 7 2 SPaioc, Go. Pano I
g.1 A u_
ms
,, w s x - we a
- Des, c ' ?,
c'-
"M MULTIPLE CHOICE B.u
,,.3, Place the appropriate letter (A, B, C or D) in the box.
M
' I,9 3
(only one answer is correct and each question has a value o
y of 10 points.)
w 1.
Which welding process is suitable.for Titanium?
A.
Gas tungsten arc with trailing shield or dry box.
A B.
Shielded metal arc.
C.
Oxy-acetylene.
D.
Flux-cored arc.
2.
What welding process should.be used to weld stainless steel when no electrical power supply is available?
D A.
ESW.
C.
GTAW.
B.
GMAW.
D.
CAW.
i 3.
Which fuel in combination with oxygen gives hot enough flame for welding steel?
A A.
Acetylene.
C.
Natural gas.
B.
Butane.
D.
Propane.
4.
What energy source in used for brazing?
A.
Diffusion.
C.
Dipping.
3 3.
Electrical induction.
D.
Fluxes.
5.
Which arc welding process may use short lengths of filler metal manually applied?
A A.
Shielded metal arc welding.
B.
Gas metal arc welding.
C.
Induction brazing.
D.
Submerged arc welding.
("ggg,
- ~ -- -
Lihr yf *:
v 070D220?62 060624 i hak N asIIM8 mock ocoogg6 pon a
t l
e
[.
J 4@
A Course 36 Test 5 PAGE 2 of 2 s
=.
6.
Which electrode used in arc welding is designed to supply its own shielding?
A.
Tungsten elect' rode.
O 5.
SAW filler wires.
C.
Fluxcored electrode.
D.
Continuous filler-metal electrode.
7.
How can an oxidizing gau like CO be used for gas shielded metal are welding of ca! bon steel, con-sidering that it is oxidizing in nature?
g A.
By adding flux to the weld joint.
B.
By using an oxidizing electrode wire.
C.
By using a deoxidizing electrode wire.
D.
With AC electrode negative the weld is self-cleaning.
8.
In GTA welding with a "non-consumable" tungsten f
electrode, why should the electrode ever need replacement?
g A.
Electrode never enters the weld zone.
3.
Because the electrode contains thortum and sitconium.
3 C.
Some evaporation of incandescent tip
./
occurs.
.D.
The tungsten electrode is used as a deoxidizer.
I 9.
What submerges the arc in SAW7 A
A.
Granules of flux.
3.
Solidified slag.
C.
Plassa.
D.
Shielding gas.
10.
What is the prime suspect when delayed cracking occurs in SAW of carbon steel?
)
A.
Inadequate visual inspection of finished weld.
5.
Residual magnetism from magnetic particle inspection.
C.
Plates were lifted by electromagnet at some time previously.
D.
/
u y.
M ETA LS ENGlNEERING I N S TlT U T E American Society for Metals Metale Park. Ohle 44073 COUME 36 TEST 6 SERIES A WELDING, JOINING AND CITFTING PflOCESSES-II PAGE 1 0F 2 M4AH Passer voye staand ap.0 4004084 MLow uuouv n 9.m <c4+
- p. 3 c,. g 3 q n y'S see,s. no.
n 72 m pouc. Gam a h rm h t3* LL stars A r* i M ge RN S * *l S
- b 3 Cart One a...
c...
MULTIPLE CHOICE Place the appropriate letter (A, B, C or D) in the box.
(Only one answer is correct and each question has a value of 10 points.)
1.
An arc welding process in which the w id zone is protected by shielding gas and/or molten flux is known as A.
plasma are welding.
B.
percussion welding.
C.
explosion welding.
D.
electrogas welding.
- I 2.
A welding process in which melting does occur in the base metal is 8.
A A.
resistance spot w1 ding.
B.
diffusion welding.
C.
friction welding.
D.
pressure gas welding.
3.
A welding process which uses a magnetic lens to focus high intensity electrical energy on the weld zone in a vacuum atmosphere is called:
O A.
laser beam welding.
B.
high frequency induction w lding.
C.
electron beam welding.
D.
hot gas welding.
4.
Joining of dissimilar metals by utilizing electrode pressure and high resistance at the workpiece interf ace to provide a fused weld nugget is referred to as:
O A.,
diffusion wlding.
B.
resistance spot welding.
C.
flash widing.
L.
high frequency resistance welding.
9
E L
e Metale 8-f--d.s laealtute COURSE 36 TEST 6 WELDING, JOINING AND CtPPTING PP.0 CESSES-II PAGE 2 0F 2
'*dl'
- l
,[
S.
Utilizing the exothermic energy, provided by the oxidation and o
reduction chemical reaction involving two metals, to melt the base metal and provide an almost instantaneous fused wid is known as:
8
/
OO
"?
A.
therinit w1 ding.
B.
Percussion welding.
C.
forge welding.
D.
explosion welding.
6.
The energy of a light beam is used to join dissimilar met als in the process of:
C.
A.
diffusion welding.
B.
hot gas welding.
C.
laser beam welding.
3 D.
electron beam welding.
7.
Nondestructive evaluation of the internal quality of a weld is most difficult in the following welding process:
3 A.
Electrogas welding.
B.
Laser beam welding.
C.
Electron beam widing.
D.
Diffusion w 1 ding.
8.
The resistance welding process which involves partial melting of the base metal and expulsion of the molten metal as an upset weld b
A-is produced is A.
plasma arc welding.
B.
flash welding.
C.
forge welding.
D.
thermit welding.
9.
A joining process that does not melt the steel interfaces to be joined and the melting range of the filler metal does not exceed I
450 C (840 F) is:
l A.
electrogas welding.
B.
induction widing.
I C.
ultrasonic welding.
l D.
soldering.
- 10. A joining process that pomics bonding of non-metals to metals is:
A.
adhesive bonding.
B.
electrogas welding.
C.
flash welding.
D.
pressure gas welding, i
l
c y
f-M ETA LS ENGINEERING INSTITUTE American Welding Society Cocast 36 Tus? 7 QUAI,IFICATION OF WEIDING FROCEDUREs, American SOClety f0f Mete WELDEas, AND WEIAING OPERAtcas Metels Park. Onde 44073 a
m4Aas esmt vous sena.a ao assessa emow page I of 2 e as a f t V 61 a v-c 4k
- p. y g,. g 3 e
,,,,, % 1 r sPorw C.cwvt De..d
/OO C s=-y mu
~
[
W LTIPLE OIOICE Place the appropriate letter (A, B, C or D) in the box.
(Only one answer is correct and each question has a value of 10 points.)
1.
The purpose of a welding procedure specification and the procedure qualification record is to determines C
A.
Now good a welder is in depositing a weld.
B.
That the proposed widment can be properly heat treated.
C.
That the proposed weldsent is capable of having the required properties for its intended application.
D.
That the proposed welding equipment is in good working condition.
2.
Under the AWB Structural Welding Qods, a wider who is qualified in a given welding process but who has not used the process for more g
than alx months is required to A.
Pasa a written test on the welding process.
3.
Secome requalified.
C.
Se approved by the inspector before doing more welding.
O.
Se approved by AWS.
3.
Under the rules of the A8ME Boiler and Pressure Vessel Code, welds to be acceptable muets g
A.
Se examined by the welding engineer.
B.
Se made only in the horizontal position.
i C.
Be examined by ASME referees.
D.
Pass tension and bend tests.
4.
On work governed by the AWS Structural Welding Code, the type and extent of inspection each joint la to receive is 3
A.
Decided by the chief inspector.
B.
Defined in the AWS Welding Handbook, 1976 Edition.
C.
Approved in advance by AWB.
D.
Defined in the welding proce&Jre specification.
S.
Welding procedure specifications:
A.
Serve as a general guide for the fabricator.
b 5.
Govern the production of any welements the f abricator supplies under a particular con. tract.
1
g v
f t,
{?
Course 36 Test 7 PAGE 2 of 6.
In code work, whether or not a qualified welding procedure may be changed without requalification tests is determined y
i by:
A.
The f abricator's welding engineer.
B.
The customer's welding inspector.
C.
A government arbitrator.
I D.
The governing code or specification.
7.
Under the ABME Boiler and Pressure Vessel Code, a welding procedure must be requalifieds g
A.
Af ter the welder returns from an absence of two weeks or more, providing the welder obtains ASME approval.
B.
When any one of the essential variables listed in the t
code is changed.
C.
When a new batch of electrodes is used even if its com-position meets code standards.
D.
When the welding inspector finds cracks longer than specified in the code.
8.
In the AWS electrode classification,. the '70* in the designa-tion, E7015 indicates:
g A.
70% dilution af ter welding. *
- 8.
Welding temperature must be above 700 F.
C.
A strength level of 70,000 pai.
e D.
70 electrodes are packed in each box.
9.
Under the AWS Structural Welding Code, a change in the position of welding requires the welder to:
A A.
Recome requalif Led if he or she is not already qualifled for the new position (an exoeption may be made for flat position if qualified for more dif ficult position).
5.
Present evidence that he or she has previously welded in the new position.
C.
Satisfy the welding inspector that he or she osn weld in the new position as well as qualified welders.
D.
Pass a written test demonstrating knowledge about welding in the new position.
- 10. Under the ASME Boiler and Pressure Vessel Code, a change in one or more of the essential variables included in the weld-b ing procedure specifications (WPS) requires the fabricator tos A.
Retrain welders employed on the job.
B.
Prepare a new or revised WPS and requalify the procedure.
C.
Prepare a new or revised WPS but consider the previous qualification test to be applicable.
D.
Get approval from ASME before any additional work is done.
e
9 y' ' I l
M ETA LO EIW3 i N E E RIN O IN STITt/rE American Society for M:tal Metale Park. Ohle 44073 COURSE 36 TEST 8 SERIES A CODES GOVERNING WELDING INSPEC"f!ON PAGE 1 OF 2 f
em PL8AM PeeMi TOW 8 64Amt A8se Ae00064 MLow ename u_b alr 3 ("3. b e u E M Q, g 4, g.,
se,.s. No.
^.
stemet 3 Gi 1 *1
- $ ? /li O ("i O 2n v E ko 4 3
,']Af a o _.m
..n
.e
,, um e.m. m o,,
0 s
_=-
=.. _
n..
- o. a e
.e, e *'s es**
MULTIPLE CHOICE Place the appropriate letter (A, B, C or D) in the box.
(only one answer is correct and each question has a value of 10 points.)
e 1.
The specification that is seet comanonly used for welded bridge construction is A-A.
AWS Structural Welding Code D1.1.
3.
ASME Code for Unfired Pressure Vessels.
C.
SNT-TC-1A W!yr Level I.
D.
ASME Soiler and Pressure Vessel Code f-2.
According to the AWS D1.1 Code the w iding inspector is to
, (*g identify with a distinguishing marks W,
e.
A.
All weldments that have been tack wlded.
B.
A weld that may be repaired or replaced.
C.
Welds that require additional inspection.
D.
Weidments which he has inspected and accepted.
3.
Under the ASME Boiler and Pressure Vessel Code a special Authorized Inspector is C
A.
Any employee of an insurance coespany which writes boiler insurance.
8.
An AWS qualified welding inspector.
C.
An ASME qualified inspector through written examination formulated by the National Board of Boiler and Pressure vessel Inspectors.
O.
A Level III NITF inspector.
4.
Under ASME Code UWS2 dpot Padiographic examination of weld joints,the minimum length of wid to be radiographed isi
$4 A.
6 inches (152 man).
C.
6 times thickness of plate.
B.
2/3 thickness of plate.
D.
3/4 inch (19 son).
6
~
a l
L*.*
d
.. useas. % hi.
]E b RNING WELDING INSPECTI Y H RI 5 A gg PACE 2 Cr 2 c
o n.e wee i me some 5.
Acceptance of a weld joint as specified in ASME Code UW52 so that welding may continue.may have a discontinuity such ass A.
A crack 1/4 inch (6 mm) long.
B.
Small section of microporosity.
C.. Incomplete fusion h inch (12 mm) long.
D.
Incomplete penetration at root of joint.
6.
The ASME code UB-44 covers:
(1.
A.
Radiographic examination of brazed joints.
3.
Visual examination of resistance spot welded joints.
C.
Visual examination of brated joints.
D.
Tension testing of brazed joints.
7.
The ASME Code UG-84 covers:
A.
Liquid penetrant inspection of brased joints.
[I) 5.
Guided bend test for pipe welder qualification.
C.
Ultrasonic testing of inaccessible welds.
D.
Ispact testing.
8.
The basic standards used in various welding codes for material specification and testing procedures are supplied by:
/
A.
American Welding Society.
American Society for Testin$ and Haterials.
B.
C. ' Canadian Welding Institute.
D.
American Society for Hondestructive Testing.
9.
The welding code which requires that all tests involving quality of a weldsent must be witnessed by its inspector is A
~
A.
MIL.
C.
AWS.
3.
ASTM.
D.
ASME.
- 10. Multiple inspection of special welding procedure to assure complete joint penetration in tubular pipe structures is
]
required fors A.
Standard circumferential butt welds.
B.
skewed connections.
C.
Longitudinal seam welds.
D.
e 4
y I
?-
v 1
L I N ST lT U T E American Society for Metals M ETA LS ENGlNEERING Metele Peek. Okle 44073 l
TEST 9 COURSE 36 PACE 1 0F 2 NELDMENT IMPERFECTICIIS AND DISC 00fTINUITIES 3RRIss A euase remet vowe *eAa.a Aeso aseessa estow I00 %
,.u.e a.mm. n au sees. He, M is 7 7 4 9.M e d da C'.w f i ** u stasef 3 %-92 on_._ R t4Let.
_. nmn
_se, it gtt, Owe
.y..
MULTIPLE CHOICE o
in the box.
(Only one lace the appropriate letter (A, B, C or D) nswr is correct and each question has a value of 10 points.)
P a
A discontinuity in a weldsent which can be attributed to the 1
welding process is:
O j
A.
Plate lamination B.
Lack of fusion.
C.
Base metal sean.
Carbon segregation in steel plate.
D.
Tungsten inclusions appearing as light discontinuities in a radiograph of a weld deposit would most likely result from D
2.
e s.
A.
cas Metal Arc welding.
B.
Resistance $ pot Welding.
s C.
Electron seam Welding.
D.
Cas Tungston Arc Welding.
If there is insufficient weld metal to fill the weld joint, 3.
the discontinuity is referred to as 6
C.
Underfill.
A.
Overlap.
D.
Melt =thru.
B.
Undercutting.
When a discontinuity such as overlap is detected, the weldsent may be rejected because the overlap generally results in A
4.
w A high concentration of stress et this notch under A.
cyclic loading.
Insuf ficient penetration at the root.
5.
C.
Excessive underfill.
D.
Underbead cracks.
Internal discontinuities in weldments are detected by non-5.
destructive testing techniques, such ass O
C.
Tension testing'.
A.
Liquid penetrant inspection.
Free bend testing.
D.
8.
Radiography.
5 64etale 8 - ' u '. ;.
to Cociuit 36 TEST 9 SERIES A WELDMENT INPERFECTIONS AND DISCONTINUITIES PACE 2 0F 2 o..e.
6.
It is generally agreed that the cause of underbead cracking in steel widments is largely due to D
)
~
A.
Preheating the weldment prior to welding.
3.
Use of shielding gases such as argon or helium.
C.
Use of high heat input.
D.
Diffusion of considerable hydrogen into the heat affected sono and transformation of austenite to martensite.
7.
A discontinuity or imperfection becomes a defect when:
A.
It exceeds the' limit sed by acceptance standards.
[l B.
It is visible on the surface.
C.
It reaches 1/64-inch in length.
l D.
Hydrogen la present in the wid bead.
6.
1,ame11ar tearing in t steel weldsent b
f A.
Can only occur if laminations are present.
L 5.
Can only occur in the presence of hydrogen and martensite fomation in the heat affected zone.
C.
Are cracks in the base metal due to high tensile stresses in the through-thickness direction of the plate.
D.
Occur as crater cracks in the weld bead.
9.
Distortion in a weldsent is generally detected by A.
Visual inspection with proper gages and fixtures.
A 8.'
Radiographic exasaination.
C.
Guided bend test.
D.
Corrosion tests.
- 10. To evaluate the size, location and orientation of an internal discontinuity by nondestructive examination it generally is a
necessary to:
A.
Perform a guided bend test in the longitudinal and transverse directions.
B.
Use multiple radiographs in various directions.
C.
Use three different types of liquid penetrant inspection.
D.
Perfom microhardness tests.
e i
i
s
,I L
L J
M ETA LS ENGINEERING lN STITUTE American Society for Metala Metele Park. Ohle 44073 COURSE 36 TEST 10
,ERIES A CMDtICAL, METALLURGICAL AND MECHANICAL TESTING CF WELDS PAGE 1 CF 2 PL8AM PG*di Tout,eAand A,s0 Aeoetil Mtow e w w e %,,, a 90%
- o. w
., w m m oome am,,,t s
1-29-9*s.
f1 LIle L e,a,e nnis g, gg, o,,
=
=
=.....
'* U,[,'l MULTIPLE CHOICE _
o, Place the appropriate letter (A, 3, C or D) in the box, (Only one i
answer is correct and each question has a value of 10 points.)
1.
An inspection that may be performed by a welding inspector and always considered as a destnetive test (si b
A.
chemical spot test on surface of base metal.
3.
metallographic examination of internal transverse cracks in the heat affected zone along the entire weld bead.
C.
nicrohardness test of surface hardness in heat affected sone of weldsment.
C)
D.
dimensional measurement of fillet leg.
2.
A Rockwell 8 (HM) scale test on th's base plate material of a widment was recorded as HRB 94.
The Brinell hardness pv (HB) (3000 kg load) by conversion would be approximately A.
NB 94.
C.
HB 200.
3.
NB 4.25.
D.
HB 676.
3.
. A tensile test was performed on a 0.505 in. diameter standard tensile bar machined fross a wid deposit. The h
maaimum load in tension was 15,000 pounds. The tensile strength of the weld deposit would bei A.
75,000 pai.
C.
15,000 pai.
8.
30,000 pai.
D.
37,500 psi.
4.
A 10.0 reo diameter tensile test bar made frca a weld deposit with original gage length of So sus broke in tension with
)
a final gage length of 60 sun. The 4 Elongation of the weld deposit would be recorded asi A.
10%.
C.
154.
B.
40%
D.
204.
S.
In a fillet weld break test, to ensure a break 'through the weld throates A.
only a hasuner blow may be used to break the specimen.
B.
a notch may be machined into the throat.
C.
a conven wid is always specified.
..... 4. w.. 5,4 w. e... d to only one plato.
l,'
j e.
(
j Metals Eagtseeetag lastitute COURSE 36 TEST 10 CHEMICAL, METALI,URGICAL AND MECHANICAL SERIES A TEsTIwo or WELDS Pact 2 or 2 o aee wee i m e e,ese 6.
A Type 304 stainless steel widment exhibits intergranular corrosion in the heat affected zone during a chemical corrosion test. To avoid this condition it is recommended for future b
weldsents tos A.
weld Type 304 with a stabilized electrode.
3.
water quench the weldment after completing the bead.
C.
change to a low carbon grade of austenitic stainless steel.
D.
change to an austenitic grade with lower chromium content.
7.
The Drop Weight Nil-Ductility Test (NIrt) is used to evaluate b
A.
the NDT temperature of the wid bead.
"~
5.
the NDT tosperature of the base plate.
C.
The Charpy impact energy value of the weld bend.
D.
The charpy impact energy value of the base plate.
8.
In the guided bend test, the test specimen is considered to have failed its 0.
A.
there is a 1/16 inch long crack at each edge of the 4
specimen.
8.
there is microporosity on the compression side of the bend.
C.
ale inch long crack is found en the convex surface.
D.
if the weld bead has been machined on either face.
9.
A 0.505-inch diameter wid metal tensile specimen measured 0.357-inch diameter at the smallest cross section after fracture. The percent reduction of area would bei O
A.
50%.
C.
35.7%
9l0 -Q B.
29.54.
D.
25.2%
- 10. The mechanical property of low carbon steel tested in tension and indicated by " drop of beam" or " halt of gage" is D
~
A.
yield strength (0.2% offset).
D.
tensile strength C.
shear stength.
D.
yield point.
e 4
sALS Eili I N E E R I NO IN OTITV E Americca Soclety f:r M:t:12 u.a.i. Part, ohie'44073 COUME 36 TEST 11 1Od
,RAIES A VISUAL AND LIQUID PENETRANT INSPFCTION PACE 1 OF 2 MA44 Powve vows Mama Ano Accetss snow nseg n.u 2 l C Y O.
L W Lkk
= 1 $n
- 0 '$
,,,,,,- s 0 2 s pa..a r. c.% r m..a j y-)
s.e... m-g,y F1 w d' L stare 0H : o gy 4 C#a.
- / - 7 S $
o
'................i....._
noe w,se e
MM MULTIPLE CHOICE Place the appropriate letter (A, B, C or D) in the box.
(Only one answer is corrs4ct and each question has a value of 10 points.)
1.
A discontinuity that would be visible on a macro-etched cross section of a resistance spot weld is:
b A.
Slag.
C.
Undercut.
~
3.
Incomplete fusion.
D.
Overlap.
g 2.
Discontinuities that may be detected by careful' visual examination of the edges of steel plate prior to welding are:
- (
A.
Carbon segregation.
C.
Laminations.
B.
Inco,nplete penetration.
D.
Microporosity.
3.
The physical principle which perinits the migration of liquid-penetrants into very fine surface discontinuities is:
A A.
Capillary action.
C.
Optical fluorescence.
5.
Magnetic permeability.
D.
Emulsification.
4.
The operation that is cosmon to all three methods (A, u and C) of liquid penetrant inspection is A.
Water rinse after emulsification.
B.
Solvent wipe after drain.
C.
Spray surface with solvent developer.
D.
Develop.
S.
Black (ultra viclet) light is used with a fluorescent penetrant in a tarkened area to:
A A.
Brilliantly fluoresce discontinuities to provide suitable contrast.
B.
Contrast red indications on a white b.ickground.
C.
Stop the bleeding of the penetrant which may obscure a
the indication.
D.
Dry the penetrant prior to application of developer.
Il
~.
.7 9
N COURSE 36 T 11 SERIES A VISUAL AND LIQUID PENETRA W INSPECTION PAGE 2 OF 2 L
e see ovee Obs apone 4
,The time required for'a discontinuity to develop in liquid 6.
penetrant inspection is:
C A.
Directly proportional to the volume of the discontinuity.
3.
Almost instantaneous, one or two seconds regardless of size.
C.
Inversely proportional to the volume of the discontinuity.
D.
More than one hour.
7.
False indications'in liquid penetrant inspection may be caused by:
A.
Crinding cracks.
C.
Seams.
SE) 3.
Patigue cracks.
D.
Shallow scratches.
S.
In liquid penetrant inspection it is important that the developer:
A.
Be water so'luble.
()
5.
Should always be used in a dry condition.,
C.
Provide maximum contrast between indication and background.
D.
Se applied prior to the dye-penetration.
3.
A technique used with solvent developers to reveal very fine cracks in a weldment is:
1?
A.
To spray the developer immediately onto the liquid penetrant surface.
B.
To spray lightly and rapidly on the finish wiped dye impregnated surface.
C.
To apply the developer first and then the liquid penetrant.'
D.
To mix an equal amount of colored dye with developer.
10.
i To assure that the liquid penetrant will effectively wet the surface of the'weldment to be inspected, it is considered good practice tos j
A.
Thoroughly clean and dry the surface.
B.
Spray the surface with hot water when using solvent type dyes.
C.
Coat with soluble oil prior to using water-base emulsifiers.
Wipe the surface with a lint free cloth dipped in developer D.
solution.
l l
t g
e
L
,)
M ETA LS ENGINEERING INSTITUTE American Welding Scciety American Society for Metals COURSE 36 TEST 13 Metals Park. Otuo 44073 8
ULTiiASONIC INSPECTION nasa rewer vous e ama ase Accetss ea60w pace l of 7 be er 44
,L '..R, a d daA1EY e
Reena. Me.
yggr h*F 2 A 9e2 i.a cn
(", w a u d Vwo
/DD R E b ** E L stare O H io te 4 * * - t.
arv e
MJLTIPIE CHOICE 9ec Place the appropriate letter (A, B, C or D) in the box.
(Only one answer is correct and each question has a value of ten points.)
1.
What protection does the welding inspector need when UT is performed in his vicinity?
4 A.
None, there are no hazards.
B.
Avoid placing body or hands in line with scanning beam.
C.
Standard earplugs, IMHz cut-of f.
D.
Lamb's wool or cotton wool to close sensitive ears.
2.
A multiple-transducer technique is used to inspect a weld. What value is this technique?
g A.
No advantage over one transceiver because the equipment is K. ore l
expensive and requires more labor.
i B.
System is not aff ected by attenuation of the beam.
l C.
Replaces single-transducer set for certain weld imperfections.
D.
Receivers can be placed in more than one position and distance f
f rom transducer so that (iscontinuities with diff erent orientations can be detected.
3.
What preparation does the work surf ace need for ultrasonic inspection of a weld?
g A.
None, rough surf aces have no eff ect on operation.
B.
Probe contact area must be smooth and f ree f rom scale and weld spatter.
C.
Surf ace discontinuities must be f ree of scale and other con-taminants.
D.
Welds must be ground smooth so that reflection is not distortJd.
4.
A CRT trace shows various blips but no rebound reflectance from the back surf ace of a weldment being testes with an angle beam g
transducer. What interpretation should the inspector make?
A.
Technician's technique is f aulty; back surf ace reflection should be used to calibrate distance to internal discontinuity.
B.
Transducer is imperf ectly coupled to the surf ace.
C.
The blips indicate possible discontinuities which should be investigated more carefully.
D.
The blips are indicating the heat affected zone and can be disregarded.
3 M ETA L0 EDiNEERING INOTITJE Am:rican Soclety f:r M:tals Metals Park. Ohio 44073 7
i COURSE 36 TEST 12 1 CRIES C MAGNETIC PARTICLE AND RADIOGRAPHIC INSPECTION PAGE 1 of 3 PLAAM Ptepet voue #4AAnd AND A00et15 MLOW e.s,e uh 2 L c e b Ta s k.
.,.3-unset.m o C i'Oi. M c.c m 6 k.s.
3 d ** C L -
siare na m
- ,4 9 %
lh 4
W -
on e noe wrese MULTIPLE CHOICE
% pa.
Place the appropriate letter ( A, B,
C, or D) in the box.
(Only one answer is correct and each question has a value of ten points. )
1.
A double exposure x-ray film is made of a weldment containing a tungsten inclusion, placing a lead marker S on the source side of the specimen and a lead marker F on the film side.
The weldment is 25 mm thick.
On the negative two images of the inclusion are seen 20 mm apart; the two images of the S marker are 25 mm apart; the F marker images are nearly superimposed.
How far beneath the source side of the specimen is the inclusion?
3 A.
20 mm.
B.
10 mm.
C.
15 mm.
D.
5 mm.
2.
When MT inspection must be performed on the finished weldment, what need is there for any MT inspection before welding?
A.
results of prior MT inspection calibrate the
) ;.
equipment for the final inspection.
B.
plate edge inspection may reveal laminations or inclusions harmful to welding.
C.
there is no need.
D.
only done prior to repairing a weld.
3.
Characteristically, the fluorescent screens used in' radiography:
A.
increase the image sharpness.
B.
decrease graininess in the radiograph.
y C.
increase efficiency.
D.
filter out most of the back scatter.
e
%e e
s 4
' [/,.
hietale Engiacering lastl* 's TEST *f2 COURSE 36 SERIES C MAGNETIC PARTICLE AND RADIOGRAPHIC INSPECTION PAGE 2 of 3 a me.+m 4.
What prod spacings are recommended in MT inspection?
A.
a fixed spacing of 75 mm (3 in.).
C.
~
B.
a narrow range of 5 to 25 mm (3/16 to 1 in.).
C.
a broad range of 50 to 300 mm (2 to 12 in.).
D.
for wet powders use ' 25 mm; for dry powders 35 mm.
- 5.. How should imposed magnetic field be oriented to detect a surface discontinuity such as a crack?
2)
A.
parallel to crack.
B.
at 45' angle to crack.
C.
orientation is unimportant for surface cracks.
D.t at 90' angle to crack.
6.
Penetrameters are used when making radiographs:
A.
because they have the same attenuation charac-teristics as the material in the test piece..
B.
as a size standard against which flaw sizes are
((
compared.
J C.
as a direct check on the quality of the recorded image.
D.
as an identification on the radiograph.
7.
What harm is caused by accidental arcing of NT prods to the work?
A.
no ef fect, voltage is too low.
l B.
the heat,under the contact points can produce i
local spots of very hard material, or burned h
spots.
C.
creates residual magnetic pole which cannot be removed, hence a source of are blow in welding.
D.
arc produces burst of X-rays (possible health hazard ).
1 The radiation beam cone angle is usually limited to I
8.
about 39' to 49*:
to keep the image relatively sharp and undis-A.
torted.
/}
to limit the thickness range inspected in a i
I B.
single exposure.
C.
because the film size is limited.
l because this is the cone angle of the beam emit-D.
ted by the radiation source.
h e
9
v i
Metals Engineering lastil COURSE 36 TEST 12
.I MAGNETIC PARTICLE AND RNDIOGRAPHIC INSPECTION PAGE 3 of 3 9 e we.
spece 9.
Ionization radiation, such as produced by X-rays and gamma rays, has certain harmful physiological effects that are believed to be cumulative.
How are these effects on individuals workin.g with radiogr'aphy mon-itored?
u ce A.
by weekly checks by a doctor.
B..
wearing pocket dosimeters or film badges which are checked periodically and the ~ readings noted N
and permanently recorded.
C.
no reliable device has been developed.
D.
exclusion of all personnel'from the immediate area during exposure.
10.
Nonrelevant indications are true patterns caused by -
leakage fields that are not the result of flaws.
These indications:
I A.
should be disregarded.
B.
are easy to identify.
bg C.
need careful evaluation to distinguish them t
from flaw indications.
D.
appear only at known internal notches such as splines, threads or keyways.
1' 1
6 i
t e
e o
~~
10/81 S13A/B
+
g,.
~
Y :-
G
)
W M ETA LS ENGINEERING INSTITUTE N
American Welding Societ COURSE 36 TEST 14 EDDY CURRENT DISPECTION, ACOUSTIC EMISSION, American Society for Mata PROOF TESTS AND LEAK TESTS Metals Park. Ohio 64073 a
nansa meer vous mama um amoessa aa6ow p g, ) o 2
r uu a r at y e. L. e 44-p. o.g nees. no.
vn Spai n kome Om.c smar j
- R ?
Arbat nur _ne up.a M r 4 t
ay, Oem l
MJLTIPLE CHOICE Dlace the appropriate letter (A, B, C or D) in the box.
(only one j
answer is correct and each question has a value of ten points.)
l i,
1.
What property of eddy current inspection permits high speed automatic I
testing?
A.
Detector can operate without any contact with work.
3.
Eddy current probe has form of a wheel, which thus can ride rapidly over moving work.
,g C.
Electromagnetic field that produces the eddy current attracts
,J probe to discontinuities, increasing sensitivity and reducing recognition time.
D.
Operates via a light beam which helps identify flaws.
2.
At what speed can eddy current testing be done on pipe?
B A.
2.5 mm/s (6 ip)
C.
25 mm/s (60 ips) 5.
0.5 m/s (100 fp)
D.
1.25 m/ min (50 ipm) l 3.
Where is oddy current inspection commonly applied?
A.
Welded tubular products only.
B.
Discontinuities greater than 6 mm (Is in.) in size.
l C.
Nonferrous materials only.
D.
Automated high speed inspection.
4.
The size and shape of the inspection coil for eddy currant inspection A.
depends on the shape of the part being inspected and the purpose of the inspection.
(
S.
must be such that it entirely encircles the workpiece.
C.
can only be a flat coil.
D.
must be such that oddy current flow is parallel to the largest workpiece dimension.
l 5.
Whi& acoustic emissions most concern the welding inspector?
A A.
Bursts, which may reveal development of micro and macro cracks.
B.
Continuous emissions (suggesting trapped slag or inclusions).
C.
Earmonic emissions, f rom nests of porosity.
~
a-
- a - a --.
a.
.,.a_,,...
v v.
y J
Course 36 Test 14 PAGE 2 of 2 6.
Since all sensors hear every ART emission, how can any single emission source be located?
A A.
By triangulation using a computer, from time lapse in alcroseconds.
5 By decibel readings at each sensor.
C.
By ccumputer read-out of sound levels, to detect nearest sensor.
D.
By using a master sensor.
7.
What is the effect of entrapped gas within a vessel under-going hydrostatic proof testing?
A.
Indicated pressure readings will be too low because of the compressibility of the gas.
B.
Pressure readings will be too high because of added gas pressure.
l C.
Leaks at air pockets will not show liquid run-out.
D.
It creates a safety hazard.
S.
What limit is usually placed on pneumatic. test pressure?
A A.
35 kPa (5 psi)
C.
105 kPa (15 pai) i
.B.
70 kPa (10 psi)
D.
350 kPa (50 psi) 9.
How can a structural weldsent such as a welded truss, which has no enclosed volume, be proof tested?
g A.
Provide run-off tabs during construction for destructive testing of representati,ve welds.
B.
Support ends, apply inert load (sandbags, scrap iron etc.), measure deflection.
C.
Inclose weldment in suitable container, then apply pressure.
D.
Proof testing applies only to enclosed vessels.
1
- 10. How is the halogen sniffer used in leak testing?
A.
Balogen gas pressurized inside vessel has 'cha'racteristic b
odor when sniffed by the inspector at the leak.
B.
The probe detects the noise emitted by the escaping gas.
C.
The sniffer uses a soap solution that bubbles at the leak.
D.
" Sniffer" probe detects halogen-containing gas by scoe chemical or physical property of the gas.
6 8
=
.e b
.n.
m-
_-.--,..,__--mm__.__-..-__.._mm__.___
y?
1 M ETA L0 EN9iNEERING INOTITTE Am2ric n Soci;ty f:r Mstds b
Q Metals P;rk. Ohio 44073 COURSE 36 FINAL EXAM SERIES A WELDING INSPECTION AND QUALITY CONTROL PAGE 1 of 4 rt Att reiNT vove NAM AND A00et15 SHOW (GRADUATEup_ u-s3
, m
, n.z. m a.gis. No niin s57'1 5t'Riuc= G Roo i Q es A D on 3 r 4 ut t uan A +-s i a se 4 es s e/,
4-8-83 Date h
P/ "*',;;'
c W-Xa===d ase MULTIPLE CHOICE Place the appropriate letter (A, B, C or D) in the box.
(only one answer is correct and each question has a value of 5 points).
1.
The AWS Structural Welding Code specifies that the option for repairing an unacceptable weld, or removing D
and replacing the entire weld, belongs to the:
A.
Welder who made the weld.
B.
Any AWS certified welding inspector.
C.
Any shop supervisor.
D.
The contractor.
2.
A test is described as " destructive" if:
l A.
It destroys the rapport between welder and 1
I inspector.
i B.
The object tested is destroyed or damaged when obtaining test results.
C.
The test piece become magnetic.
l D.
It is performed on the construction site where l
special safety rules apply.
3.
The melt-thru symbol is used only where:
A.
Specified by the weld shop supervisor.
D l
B.
Large quantities of heat input are mandatory.
(
C.
The root face must be melted in.
l D.
100% joint penetration plus reinforcement is l
required in welds made from one side only.
4.
The size of a groove weld and its effective throat are b
l A.
Measured before welding.
l B.
Of no importance.
l C.
One and.the same.
l D.
Seldom equal.
\\
15
- }.
- ih' 5Ln
~
m m hennus.
Q WELDING INSPECTIOF
(
r
' Lj QUALITY CONTRO PAGE 2 of 4
,. De em ww.
la m s,=.
t 5.
Precautions are taken in. welding of steel components to avoid formation of a brittle and highly stressed 3
microstructu*e entitled:
i' A.
Martensite.
C.
Austenite.
B.
Ferrite.
D.
Pearlite.
6.
How far on each side of the weld should flame heating i
be applied on work 38 mm (1 in.) thick?
A.
95 mm (3-3/4 in.).
C.
3 8 mm (1. 5 in. ).
B.
76 mm (3 in.).
D.
152 mm (6 in.).
7.
The most effective wave length range for infrared l
heating is:
D
~
A.
0.75 to 400 pm.
C.
10 to 14 pm.
B.,
100 to 200 pm.
D.
2 to 6 pm.
8.
The are welding process in which the electrode can be both self shielding and used with semi-automatic equipment is:
[
A.
PAW.
C.
BMAW.
B.
FCAW.
D.
OAW.
9.
A type of welding process that would not exhibit a heat affected zone when bonding an aluminum plate to a steel plate is:
C.
A.
Electron beam welding.
C.
Explosion welding.
B.
Laser beam welding.
D.
Electrogas welding.
10.
A change in or the addition of heat treating after welding on work done under the ASME Boiler and Pressure
.O l
Vessel Code requires:
A.
Verification and approval by ASME.
B.
Requalification of the welding procedur~.
e C.
Approval of the Industrial Heat Treaters Certification Agency.
D.
Approval of the local AWS District Director.
11.
Welded structures for the hulls of merchant ships are certified by:
g
~
A.
American Welding Society.
B.
American Bureau of Shipping.
C.
American Society of Mechanical Engineers.
D.
American Society for Testing and Materials.
)
N Metals Eagemeertas Inselente
~
Y.' }j,_TL a WELDING INSPECTION I L.
QUALITY CONTROL PAGE 3 of 4
- p. noe w,w.
}
henspue 12.
Porosity in a steel weld bead as a discontinuity may be caused by:
pg A.
Carbon and oxygen forming carbon monoxide gas.
B.
Iron and oxygen forming iron oxide.
C.
Aluminum and oxygen forming aluminum oxide.
D.
Iron and carbon forming iron carbide.
13.
Crater cracks are found most frequently in weld beads of steels with high coefficients of thermal expansion g
such as:
A.
Plain low carbon steels.
B.
Low carbon - low alloy steels.
C.
Austenitic stainless steels.
D.
Rimmed steels.
14.
A tensile test was performed on a 0.505 inch diameter standard tensile bar machined from a weld deposit.
The load in tension at 0.2% offset was 10,000 pounds.
The I) l yield strength of this weld deposit should be recorded as:
A.
10,000 psi.
C.
25,000 psi.
(,,
B.
5,000 psi.
D.
50,000 psi.
15.
Optical microscopic examination of the weld zone in a 0.30% carbon steel weldment utilizing metallographic n
O techniques can be used to:
A.
Verify the chemical analysis of the steel.
B.
Determine if marten' site is present in the heat i
affected zone.
C.
Determine the NDT temperature of the weld bead.
D.
Determine the yield strength of the base plate.
16.
Inspection of weldments by liquid penetrant inspection is generally used to detect discontinuities such as:
4 l
A.
A longitudinal surface crack in a weld bead.
B.
Lack of penetration at root of a fillet weld.
C.
Underbead cracking in heat affected zone.
D.
An internal crack at the center of a double-vee j
groove weld.
I I
~
i
j'M n',
Metals Engineering lastitute
. /
L WELDING INSPECTIO j D
),
J QUALITY CONTROL PAGE 4 of 4 L_c
_t o. un ra.
In this spoce
-)
17.
A double exposure x-ray film is made of a weldment con-taining a tungsten inclusion, placing a lead marker S n
on the source side of the specimen and a lead marker F L
- -~~
on the film side.
The weldment is 30 mm thick.
On the negative two images of the inclusion are seen 20 mm apart; the two images of the S marker are 25 mm apart; the F marker images are nearly superimposed.
How far beneath the source side of the specimen is the inclusion?
A.
20 mm.
C.
6 mm.
B.
10 mm.
D.
12 mm.
18.
The International Institute of Welding (IIW) test block used in calibration of ultrasonic testing equipment is specified to be made of:
,fk, A.
A low alloy steel plate that has been precracked.
~
B.
Killed open-hearth or electric furnace, low carbon steel in the normalized condition with G.S. No. 8.
C.
Type 304 austenitic stainless steel.
D.
The same alloy as the weldment.
19.
The echo in an ultrasonic test on a weldment that would be considered as an irrelevant indication would be:
7)
A.
Interference caused by incomplete penetration in '
a steel plate welded from both sides.
B.
Interference caused by a shrink cavity in the weld bead.
C.
Interference caused by underbead cracking in the heat affected zone.
D.
Interference from the surface of the material I
being examined.
i l
20.
A simple leak test for an air pressurized fully enclosed vessel utilizing a soap solution is known as the:
{
A.
Helium Mass Spectrometer Test.
B.
High-Vacuum Test.
l C.
Bubble Test.
D.
Leakage Rate Test.
.).
t
g u
.__= =_ = =_= = _ = = _c = = m= = =M 4 1 t i:
t
{
}l!.
getnMateofEampletion N
^
m. c.r m ie...t l l Worley O. Puckett l.l 7
+
5 E
has satisfactorily completed the Metallurgical Course entitled
{ l~
Welding Inspection and Quality Control l l:
- c
{-
co-sponsored by the American Welding Society
.j g
and
{
American Society for Metals g {
and in testimony thereofis awarded this l
CERTIFICATE and 5.o
! i CONTINUING EDUCATION UNITS
- i i 1
+
- {
g this29 day of Aprli
,1983 j
g 3
I
,,/
y
+
g 1 $
\\
- 3 7
d 3 :
AMERICAN WELDING SOCIETY AMERICAN SOCIETY FOR METALS 4
i President sident g
~
I++<.++ a+.: +w<.<.ww+.>.:.w<.w+w<.w.:.e.#w.w+w<.+..#w++w<.+w.:.mw<.wm..+w+%++ww++wwwm.><.wwo++w++wn, {
j(
M re a e s e s e a s e a a e e e : a e sis a s e e a a s e e e e s a a e s s : s s : s s s s s a.s ::s s s s a e a s a s s a s s.s s : s,s s e a s;s:s's: sis:s e :sts:s'sisis'ais s e e,s:s a s's:s:s e.s s's s s : e s'
.