SPECIMEN WRITTEN EXAMINATION QUESTIONS CSWIP 3.1 1 .1
Part A and Part A2 Candidates are required to tick, or otherwise indicate, the corrective answer in the section provided. There is only one correct answer for each question. 1
Applyi Appl ying ng pre prehe heat at whe when n weld weldin ing g carb carbon on man manga gane nese se ste steel el is is norm normal ally ly do done ne to avoid: a) Slag inclusions b) Hydrogen cr cracking c) Lack of sidewall fusion d) Porosity
2
Which Whic h of fo foll llow owin ing g mec mecha hani nica call pr prop oper erti ties es of of a wel weld d in in carb carbon on man manga gane nese se stee st eell is mo most st af affe fect cted ed if th thee he heat at inpu inputt pe perr un unit it le leng ngth th of we weld ld is excessively high? a) b) c) d)
3
You obs observe cen centerline cr cracking a weld that that as as bee been mad made one one of five five work stations each making similar components. The first action to take is: a) b) c) d)
4
Impound all wel Impound weldin ding g consu consumab mables les Report Rep ort the the occurr occurrenc encee to high autho authorit rity y Stop St op al alll wel weldi ding ng Call Ca ll for for ful fulll NDT NDT chec checks ks
Which of the following defects is unlikely to be found by visual inspection. a) b) c) d)
5
Elongation Tensile strength Hardness Toughness
Linear misalignment Undercut Overlap Linear sl slag in inclusion
Which Whic h of the the fol follo lowi wing ng wel weldi ding ng pro proce cess sses es use usess a resi resisi siti tive ve hea heati ting ng sys syste tem m to achieve weld metal deposition. a) b) c) d)
Manual metal arc welding Submerged-arc we welding Electro slag welding Resistance sp spot we welding Page 1 of 32
6
Whi hich ch of of the the fol follo lowi wing ng uni units ts cou coulld Char Charpy py V not notch ch ene energ rgy y be mea measu surred in? a) b) c) d)
7
The usua The usuall met metho hod d of ass asses essi sing ng the the sen sensi siti tivi vity ty of of radi radiog ogra raph ph is is by me mean anss of a: a) b) c) d)
8
Bend test Macro ex examination Impact tests Fracture tests
Hydr Hy drog ogen en con contr trol olle led d elect electro rode dess wer weree deve develo loped ped pr prin inci cipal pally ly fo for: r: a) b) c) d)
11
Mandatory Depe De pend nd up upon on si site te an and d we weat athe herr co cond ndit itiion onss Depe De pend nden entt upon upon the the con contr trac acto tor’ r’ss conf confid iden ence ce in in his his proc proced edur ures es Onlly re On requ quir ired ed wh when en CO CO2 2 wel weldi ding ng is to to be be use used. d.
Whi hicch of the fol followi win ng destructive tests is no nott normally required for welder approval test for mild steel? a) b) c) d)
10
Dosimeter Fluoroscope IQI ( Penetrameter) Clinometer
Underr norm Unde normal al con contr trac actt cond condit itio ions ns,, weld weld pro proce cedu dure re app appro rova vall test testss for for pipe pipe work are: a) b)) b c) d)
9
Pounds per square inch Joules Newtons per square millimeter None of the above
The prevention of porosity The prevention of cracking The enhancement of arc voltage Their ease of arc starting
Forr whi Fo which ch of of the the fol follo lowi wing ng is is prepre-he heat atin ing g most most li like kely ly to to be re requ quir ired ed?? a) b) c) d)
Austenitic stainless steels High strength alloy steels Low and medium strength steels Low carbon steels
Page 2 of 32
6
Whi hich ch of of the the fol follo lowi wing ng uni units ts cou coulld Char Charpy py V not notch ch ene energ rgy y be mea measu surred in? a) b) c) d)
7
The usua The usuall met metho hod d of ass asses essi sing ng the the sen sensi siti tivi vity ty of of radi radiog ogra raph ph is is by me mean anss of a: a) b) c) d)
8
Bend test Macro ex examination Impact tests Fracture tests
Hydr Hy drog ogen en con contr trol olle led d elect electro rode dess wer weree deve develo loped ped pr prin inci cipal pally ly fo for: r: a) b) c) d)
11
Mandatory Depe De pend nd up upon on si site te an and d we weat athe herr co cond ndit itiion onss Depe De pend nden entt upon upon the the con contr trac acto tor’ r’ss conf confid iden ence ce in in his his proc proced edur ures es Onlly re On requ quir ired ed wh when en CO CO2 2 wel weldi ding ng is to to be be use used. d.
Whi hicch of the fol followi win ng destructive tests is no nott normally required for welder approval test for mild steel? a) b) c) d)
10
Dosimeter Fluoroscope IQI ( Penetrameter) Clinometer
Underr norm Unde normal al con contr trac actt cond condit itio ions ns,, weld weld pro proce cedu dure re app appro rova vall test testss for for pipe pipe work are: a) b)) b c) d)
9
Pounds per square inch Joules Newtons per square millimeter None of the above
The prevention of porosity The prevention of cracking The enhancement of arc voltage Their ease of arc starting
Forr whi Fo which ch of of the the fol follo lowi wing ng is is prepre-he heat atin ing g most most li like kely ly to to be re requ quir ired ed?? a) b) c) d)
Austenitic stainless steels High strength alloy steels Low and medium strength steels Low carbon steels
Page 2 of 32
12
Manual met metal arc weldi din ng of low alloy ste steels is more likely to be performed with: a) b) c) d)
13
which whic h of th thee foll follow owin ing g defe defect ctss is mo more re com commo mon n to we weld ld dep depos osit ited ed by by the the CO-2 welding process than weld deposited by manual metal arc? a) b) c) d)
14
Under cut Porosity Tungsten inclusions Linear misalignment
Which Whic h of the the fol follo lowi wing ng can can aris arisee from from copp copper er inc inclu lusi sion onss is a fer ferri rite te ste steel el weld? a) b) c) d)
16
Slag inclusion Excess penetration Lack of side fusion Tungsten inclusions
Which Whic h defe defect ct wou would ld yo you u expe expect ct to to obta obtain in in in TIG TIG wel welds ds in in nonnon-deo deoxi xidi dize zed d steel? a) b) c) d)
15
Rutile electrodes Cellulosic El Electrodes Iron powder electrodes Basic hyd hydrog ogeen con conttrolled ele electrodes
Weld metal cracks HAZ cracks Lamellar tearing Porosity
Which Whic h of the the follo followi wing ng is is like likely ly to to give give the the highe highest st imp impac actt stre streng ngth th in in ferritic weld metal? a) b) c) d)
Cellulosic electrodes Submerged arc with acid flux Spray transfer Co-2-welding Basi Ba sicc co coat ated ed no norrma mall met etal al ar arcc el elec ecttro rode dess
Page 3 of 32
17
Which of the following methods of NDT would be most likely to detect lack of side fusion in ferritic steel welds? a) b) c) d)
18
You suspected that ferritic steel plates, which have been edge, prepared contain crack in the prepared edges. Which NDT method would you use to check this? a) b) c) d)
19
In improving resistance to stress corrosion cracking In dimensional stability after machining improving In lowering the peak residual stress In softening the steel
What is the maximum hardness usually recommended for the HAZ of a medium strength ferritic steel weld? a) b) c) d)
22
Linear slag inclusions Under cuts Overlap Linear misalignment
Stress relief is not helpful in one of the following cases. Which one? a) b) c) d)
21
Radiography Magnetic particle Penetrants Ultrasonic flaw detector
Which of the following defects do you not expect to find by visual examination of completed welds? a) b) c) d)
20
Penetrants Magnetic particles Radiography Ultrasonic flaw detector
100 DP Hv 350 DP HV 500 DP Hv 750 DP Hv
What effect to midthickess lamination in steel plate normaly have when they are located within a weld HAZ? a) b) c) d)
Cause lamellar tearing Fuse together to form a bond Affect the weld metal composition Cause internal tearing on a micro-scale Page 4 of 32
23
When hydrogen control is specified for a manual metal arc-welding project the electrode would normally be: a) b) c) d)
24
You would with certainty recognize a hydrogen controlled flux covered electrode from its: a) b) c) d)
25
Concrete shuttering welding team Pipe welders Plater welders Plant maintenance welders
You noticed manual metal arc welding electrodes, stripe of flux, are being used as filler wire, for TIG welding. You would object because: a) b) c) d)
27
Color Length Trade name AWS/BS639 Code Letter
When manual metal arc welding is being carried out on an open construction site, which groups of welder are most likely to require continuous monitoring? a) b) c) d)
26
Cellulosic Iron oxide Acid Basic
It is too expensive The wire would be too thick The weld metal composition may be wrong The wire is too short
When open site working, serious porosity in manual metal arc welding is brought to your attention. What would you investigate? a) b) c) d)
Electrode type Power plant type Electrode storage Day temperature
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28
The steel composition in structural contract is changed form 0.15% carbon, 0.6% manganese, to 0.2% carbon, 1.2% manganese. Might this influence the incidence of: a) b) c) d)
29
30
One of the following alloys is non-magnetic, Which? a) 4.0% Chromium molybdenum b) 12.0% Chromium c) Austenitic Stainless Steel d) 9.0% Nickel Steel When the TIG welding Austenitic Stainless Steel pipe. Argon gas backing is called for. This is to: a) b) c) d)
31
Scattered porosity Worm hole porosity Parent metal cracking Lack of penetration
IN UK practice, BS 499 Part2 specifies that the drawing dimension quoted for a fillet weld is the: a) b) c)
33
Prevent oxidation Prevent under bead cracking Prevent porosity Control the penetration bead shape
Pre-heating a carbon steel manual metal arc welding is carried out to minimize the risk of a) b) c) d)
32
Porosity Cracking in the weld area Under cut for fillet welds Lack of root fusion defects
Leg length Actual throat thickness Weld width
For open site manual metal arc welding the following equipment is available. Which would you choose for safe working? a) b) c) d)
Single operator transformer Multi operator transformers AC/DC composite power unit Diesel engine driven motor generator
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34
If submerged welding to be used to make butt welds, which would you be most critical of: a) b) c) d)
35
During CO-2 welding, the arc length is most likely to be affected by: a) b) c) d)
36
The weld could be hard and brittle The weld metal could be too soft There will be no effect on the weld The weld have under cut
A welder qualification test is o verify: a) b) c) d)
38
Assembly welding only Assembly and tack welding Joint over 25 mm thick only Cruciform welds only
You see a welder using oxy-acetylene flame with along feathered inner cone. What would be the effect of this on carbon steel? a) b) c) d)
37
The wire diameter The current return connections The gas flow rate The torch to work angle
Pre heating for arc welding applies to: a) b) c) d)
36
The root gap tolerance The angle of penetration The root face width The gas cut finish
The skill of the welder The quality of the materials The non-destructive procedures The manufacturing methods
A fabricating procedure calls for fillet welds to be blended in by grinding. This is to influence: a) b) c) d)
HAZ cracking Fatigue life Residual stresses Yield strength
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39
Bend test specimens have been taken from a 25 mm thick carbon steel butt weld. Which would show lack of inter-run fusion: a) b) c) d)
40
Lamellar tearing has been occurred in steel fabrication. BEFORE welding could it have been found by: a) b) c) d)
41
Permit it to proceed Permit it to proceed with fume extraction Stop the operation at once Advise the welder to drink milk and proceed
What two functions in arc welding must be in equilibrium to enable a stable arc to be established? a) b) c) d)
43
X-ray examination Dye penetrant Ultrasonic inspection It would not have been found by any inspection method
You are to over see arc welding of some machine fittings and find they are cadmium plated. What you: a) b) c) d)
42
Side bend Root bend Face bend Guided bend
Arc voltage Current Wire/electrode feed rate Metal burn-off rate
In MMA welding, what parameter is used for the control penetration into the base material? a) b) c) d)
Voltage Welding speed Iron powders in the coating Current
Page 8 of 32
44
In the welding of butt joint from one side, which of the following controls the profile of the root bead? a) b) c) d)
45
What type of power source characteristic is required for manual welding? a) b) c) d)
46
Cause corrosion Problems Give off Phosgene Gas Leave Residues All of the Above
Which of the following chemical elements has the greater effect on the harden ability of a steel plate? a) b) c) d)
49
Macro Nick break Hardness Charpy vee notch
Degreasing components are essential for quality welding but some agents may: a) b) c) d)
48
Constant voltage Flat Characteristic Drooping Characteristic Motor Generator
Which of the following destructive tests would indicate the toughness of weld metal/parent metal – HAZ. a) b) c) d)
47
Root Face Bevel Angle Root Gap One of the above
Molybdenum Chromium Titanium Carbon
In MAG/CO2 welding, which parameters give the greatest control of weld appearance during dip transfers or short-circuiting welding? a) b) c) d)
Wire sick-out length Amperage Wire feed speed Inductance
Page 9 of 32
50
In MMA welding, the slag produced can be varied to suit the welding position; which type of slag would be required for welding in the HV position? a) b) c) d)
51
52
The weld metal deposits of manual metal arc electrode achieves its mechanical strength through? a) The core wire b) The flux coating c) Iron powder with the flux coating What constituent is needed in coating of electrode of an electrode to prevent formation of porosity in welding of rimming steel? a) b) c) d)
53
Ductility Toughness Fatigue strength Mechanical strength
In the welding of Austenitic pipe work, the borer is usually purged with Ar to? a) b) c) d)
55
Iron powder Calcium fluoride Silicon Calcium carbonate
Welds made with high heat inputs show a reduction in one of the following properties? a) b) c) d)
54
Fluid Viscous None of the above Semi fluid
Prevent formation of porosity in the weld Prevent burn-through in the root run Prevent oxidation of the rood bead Eliminate the formation of H2
In X-ray the quality of the radiograph negative is assessed by the? a) b) c) d)
Density of the Film IQI indicator KVA available Stand-off distance
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56
A steel described, as QT will have improved tensile properties it has? a) b) c) d)
57
Which one o the following steels would give rise to the formation of porosity when autogenously welded with an arc process? a) b) c) d)
58
Hydrogen control is needed Iron powder in the electrode Higher arc voltage can be obtained Shorter arc length can be achieved
In the welding of Austenitic stainless steels, the electrode and plate material can be purchased with low carbon contents. The reason for this is to prevent? a) b) c) d)
61
Insufficient flux melting Excessive flux melting Slag removal difficulties Spatter
The use of cellulosic electrode is often made when welding the root pass of pipes in the field. This is because? a) b) c) d)
60
Fully killed steel Semi killed steel Rimming steel Fine grained steel
In submerged arc welding, the use of excessively high voltage would result in? a) b) c) d)
59
Had control of chemical composition Been heat treated Been quality tested Been vacuum melted
Cracking I the HAZ The formation of chromium carbides Cracking in the weld metal Distortion
Submerged arc fluxes can be supplied in two forms; thses are? a) b) c) d)
Sintered and agitated Agitated and fused Crushed and agglomerated Fused and agglomerated
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62
In a steel, which has improved creep properties at elevated temperature, which one of the following elements helps in this improvement? a) b) c) d)
63
Welding a steel plate of CE of 0.45 would require preheating to? a) b) c) d)
64
processes
uses
the
“keyholing”
Friction welding Diffusion bonding Electron beam welding Autogenous TIG welding
Liquid state Solid state Plastic state Elastic state
Welding procedures may require welds to be deposited at a controlled rate heat input. High heat inputs would? a) b) c) d)
67
following
In friction welding, is the metal at the interface in the? a) b) c) d)
66
Prevent the formation of sulphides Prevent hardening in the HAZ Prevent the formation of carbides To improve mechanical properties in the weld
Which of the system of fusion? a) b) c) d)
65
Tungsten Manganese Molybdenum Carbon
Have poor profile Have larger grain size Have high hardness in the HAZ Have low elongation properties
In a tensile test, a brittle material would be indicated if the fracture surface? a) b) c) d)
Shows reduction in size Is flat and featureless Breaks in the weld metal Breaks in the parent material
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68
What destructive test would be required to ascertain the likelihood of cracking in the HAZ of a weld? a) b) c) d)
69
In submerged arc welding, excessive arc voltage may cause? a) b) c) d)
70
Before, during and after welding activities Before welding activities only After welding activities only None of the above
Incomplete penetration in a butt joint could be caused by: a) b) c) d)
73
BS4872 BS499 BS4870 None of the above
A code of practice for visual inspection should cover the following: a) b) c) d)
72
Excessive penetration Change in weld metal composition Narrow weld width Excessive bead profile
The British code for visual inspection requirements is: a) b) c) d)
71
Nick break Side bend test Charpy input Macro test
Excessive root face width Excessive root gap size Low current setting Both A & C
Incomplete root fusion weld certainly be caused by: a) b) c) d)
Linear misalignment Incorrect tilt angle Differing root face widths All of the above
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74
When visually inspecting a completed single vee butt weld cap you would certainly assess: a) b) c) d)
75
You notice a very “veed” ripple shape. This is most likely caused by: a) b) c) d)
76
Manual metal arc Metal inert gas Submerged arc welding Both A & C
Undercut principally caused by: a) b) c) d)
79
Corrosion Fatigue life Overlap type defects All of the above
Slag inclusion would occur with: a) b) c) d)
78
Poor consumable choice Welding position Excessive travel speed All of the above
“Toe blending” is important as it may affect: a) b) c) d)
77
Cap height Toe blend Weld width A, B & C
Excessive amps Excessive volts Excessive travel speed All of the above
Undercut normally assessed by: a) b) c) d)
Its depth Its length Its blending All of the above
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80
A welding procedure is useful to: a) b) c) d)
81
An essential variable may: a) b) c) d)
82
The leg lengths The actual throat thickness The design throat thickness Both A & C
The planar defect is: a) b) c) d)
84
Up to 5 φ 2 – 2.5 φ 5 – 10 φ None of the above
When visually inspecting a fillet weld, it would normally be “sized” by: a) b) c) d)
83
Change the properties of the weld Influence the visual acceptability Require re-approval of a weld procedure All of the above
A magnifying glass may be used during visual inspection but BS 5289 states that its magnification should be: a) b) c) d)
82
Give information to the welder Give information to the inspector Give “Confidence” to a product All of the above
Incomplete fusion defects Slag inclusion Incomplete penetration Both A & C
Penetrant and Magnetic particle inspection are mainly used to: a) b) c) d)
Aid visual inspection Because application standard says so To confirm “visual uncertainties” All of the above
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85
Defects outside of the limits specified in a standard should always be: a) b) c) d)
86
MIG welding tends to be susceptible to lack of fusion problems. This is because of: a) b) c) d)
87
Poor access Loss of gas shield “Dirty” materials All of the above
“Weave technique” may give rise to: a) b) c) d)
90
Basic cellulosic and rutile Neutral cellulosic and rutile Basic cellulosic and neutral None of the above
The main causes of porosity in welded joints are: a) b) c) d)
89
Poor maintenance of equipment Incorrect setting Poor inter run cleaning All of the above
Manual metal arc electrodes can be grouped into three main types. Thses are: a) b) c) d)
88
Repaired Reported to “a senior person” Assessed along with other defects All of the above
Better profiles Improved toe blending Improved ripple shape All of the above
Cracks in welds may be due to: a) b) c) d)
Solidification problems Hydrogen problems Excessive stresses All of the above
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91
With reference to a root penetration bead, you could certainly assess: a) b) c) d)
Root fusion and penetration Root concavity Burn-through All of the above
92
A fatigue failure characteristic by the appearance of the fracture surface. It would be: a) Rough and torn b) “Cheveron” – like c) Smooth d) None of the above
93
“Stray arcing” may be regarded as a serious defect. This is because: a) b) c) d)
94
Overlap in welds could be influenced by: a) b) c) d)
95
Cracking Misalignment problems Inclusions All of the above
Macroscopic examination requires any specimen to be inspected: a) b) c) d)
97
Poor welding technique Welding process Welding position All of t he above
Flame cut preparations may, during welding, increase the likelihood of: a) b) c) d)
96
It may reduce the thickness dimension of a component It may cause liquation cracks It may cause hard zones All of the above
Once, after etching Twice, before and after etching Using a microscope None of the above
Which of the following may be classes as a “more serious defect”: a) b) c)
Slag inclusions Fusion defects (interun) Fusion defects (surface) Page 17 of 32
98
Code of practice is: a) b) c) d)
99
Movement of the arc by magnetic forces in-MMA welding is termed: a) b) c) d)
100
The cutting of single bevel preparations The removal of deposited welds The cutting of single U-type preparations
Which of the following processes joins metals plastically: a) b) c) d)
104
The temperature required for cut initiation The ability to cut stainless steels The depth of cut obtainable None of the above
The main uses of arc cutting/gouging processes is in: a) b) c)
103
Hydrogen cracking in HAZ Solidification cracking in the weld metal Hydrogen cracking in the weld metal Lamellar tearing in the weld metal
Oxy pressure and nozzle size would influence what in flame cutting: a) b) c) d)
102
Arc deviation Arc misalignment Arc blow Arc eye
A metallurgical problem most associated with submerged arc welding is: a) b) c) d)
101
A standard for workmanship only A set of rules for manufacturing a specific product Levels of acceptability of a weldment None of the above
Friction welding Resistance welding Plasma welding All of the above
Which electrode classification would be relevant AWS A 5.1-81: a) b) c) d)
E 6013 E 5133 E 7018 – G Fleet weld 5 Page 18 of 32
105
Which of the following coating is associated with “Stove” welding; a) b) c) d)
106
A common gas mixture used in MIG welding nickel alloys to combine good levels of penetration with good arc stability would be: a) b) c) d)
107
3200° C 2300° C 5000° C None of the above
A large grain structure in steels is said to produce: a) b) c) d)
110
Fused Agglomerated Basic All of about the same resistance
The flame temperature of oxy/acetylene mixture gas is given as: a) b) c) d)
109
100% CO2 100% argon 80% argon 20% CO2 98% argon 2% oxygen
The type of SAW flux is more resistance to moisture absorption: a) b) c) d)
108
Rutile Cellulosic Basic Oxidizing
Low ductility values Low fracture toughness values High fracture toughness values High tensile strength
The likelihood of brittle fracture in steels will increase with: a) b) c) d)
A large grain formation A reduction of in service temperature to sub zero levels Ferritic rather than austenitic steels All of the above
Page 19 of 32
111
Repair welding is often more difficult than production due to: a) b) c) d)
112
Hydrogen cracking in the weld metal is likely when: a) b) c) d)
113
Entrapped slag in the solidifying weld Entrapped gas in the solidifying weld Entrapped metallic inclusions in the solidifying weld None of the above
In bend test, the face of the specimen is in tension and root is in compression; the type of test being carried out would be: a) b) c) d)
116
Welder approval testing Welding equipment Welding procedure approval Consumables for submerged arc welding
Porosity is caused by: a) b) c) d)
115
Carbon manganese steels Stainless steels Micro alloyed steels (HSLA) Low carbon steels
EN standard 288 would refer to which of the following: a) b) c) d)
114
The material being ingrained with in-service contaminates Restricted access with the repair area The possible position of the weld Any of the above
A root bend test A side bend test A face bend test None of the above
Ultrasonic testing is of advantage in detecting which of the following weld imperfections over other NDT methods: a) b) c) d)
Lack of side wall fusion Surface undercut Incompletely filled groove Overlap
Page 20 of 32
117
The process of tempering is often carried out to regain toughness after which of the following processes: a) b) c) d)
118
The presence of iron sulphide in the weld metal is most likely to produce which of the following upon contraction of the weld: a) b) c) d)
119
Lamellar tearing Solidification cracking Hydrogen cracking None of the above
The use of cobalt as an isotope would generally be used on: a) b) c) d)
122
Ultrasonic MPI Radiography Penetrants
Hot shortness term is used to indicate: a) b) c) d)
121
Solidification cracking Hydrogen cracking Intergranular corrosion Stress corrosion cracking
Generally the most suitable method of detecting lack of sidewall fusion would be: a) b) c) d)
120
Annealing Normalizing Hardening Stress relieving
Thin materials Tee joints Plate thickness greater than 25mm None of the above
In welding procedure term, a change in essential variable means a) b) c) d)
Re-qualification of the welding procedure Possible change in the weld’s microstructure Possible change in t he mechanical properties All of the above
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123
Weld symbol placed on a dotted line in accordance with ISO requirements means: a) b) c) d)
124
A welding inspector’s main attribute includes: a) b) c) d)
125
A standard A “set of rules” for the manufacture of a product Related to welder and weld procedure approval All of the above
The correct term for cap height is: a) b) c) d)
128
A bevel butt A J butt A “K” butt All of the above
Technically a code of practice is: a) b) c) d)
127
Knowledge and experience Literacy Honesty and integrity All of the above
The correct term for a joint prepared on one component only is: a) b) c) d)
126
Weld on “arrow” side Weld on “other” side Weld on site Full penetration required
Reinforcement Cap profile height Excessive weld metal All of the above
A tensile test will assess a) b) c) d)
Impact values Stress Strain Both a) & c)
Page 22 of 32
129
The important point if high temperature steel is that: a) b) c) d)
130
An austenitic stainless steel may suffer: a) b) c) d)
131
Argon + Hydrogen Argon + Helium Argon + Nitrogen All of the above
When referring to MIG welding, the shielding gas could be: a) b) c) d)
135
Have superior mechanical properties Require baking before use Not be used on low carbon steels Both a) and b)
When referring to TIG welding, the shielding gas could be: a) b) c) d)
134
Weld ability aspects Crack sensitivity aspects Typical mechanical properties All of the above
A basic electrode would normally: a) b) c) d)
133
Weld decay Sensitization Solidification cracking All of the above
Carbon equivalent values are useful to determine: a) b) c) d)
132
They can withstand creep failure They may suffer re-heat cracking problems They may suffer loss of toughness All of the above
Argon Argon + 1% Oxygen Argon + 20% CO2 None of the above
Submerged arc utilities: a) b) c)
Deep penetration characteristic High deposition rate on DC+ Flat (P.A.) welding only Page 23 of 32
136
Ultrasonic would be prefer over radiography due to: a) b) c) d)
137
The most serious defects a) b) c) d)
138
Must be applied to welds if a crack free weld is required1 Should never exceed 300 dg C May stress relieve Must always be applied using gas flames
Which of the following welding processes may be described, as a low hydrogen process in comparison with general MMA welding: a) b) c) d) e)
141
Temperature of the component The C.E. % of the material The elements in the material All of the above
Post heat treatment: a) b) c) d)
140
Planar Cracks Lack of fusion All of the above
The weldability of a material may be affected by: a) b) c) d)
139
Ability to find more defects Lowest skill requirements Ability to detect laminations Both a) and c)
TIG MIG MAG None of the above All f the above
Which form of NDT could be used on a fillet weld on aluminum? a) b) c) d) e) f) g)
Dye penetrant testing Ultrasonic testing Radiography MPI a, b and c D only All of the above
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142
Which of the following NDT methods would not detect sub-surface defects? a) b) c) d) e)
143
Why have a high O.C.V. with MMA welding a) b) c) d)
144
Not associated with welding Types of cracks Only encountered in MMA welds Hydrogen related problems
Pre heating prior to welding: a) b) c) d) e)
147
To adjust the voltage To adjust the amperage To convert A.C to D.C. To prevent arc strikes
Fish – eyes, chevron cracks and fissures are: a) b) c) d)
146
To initiate the arc To obtain penetration To avoid lack of fusion MMA welding does not have a high O.C.V.
What is the purpose of a ‘rectifier’ in relation to welding plant? a) b) c) d)
145
MPI Dye penetrant testing Ultrasonic testing Radiography All of the above would detect sub-surface defects
Must always be carried out Need not be carried out if post heat treatment is to follow welding Is always carried out using gas flame None of the above All of the above
What does pre heat prior to welding have an affect on: a) b) c) d) e)
Hardenability Weldability Cooling rate All of the above None of the above
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148
The toes of the cap on a butt weld: a) b) c) d)
149
Which of the following butt-weld preparations is generally most susceptible to ‘lack of side wall fusion’ during MMA welding? a) b) c) d)
150
The distance from toe to the face The distance from the root to face center The distance from the root to the toe The distance from toe to toe
Quality assurance is: a) b) c) d)
153
The distance from the toe to the face The distance from the root and to the face center The distance from the root to the toe The distance from toe to toe
What is ‘throat’ thickness of the fillet weld? a) b) c) d)
152
A ‘U’ preparation A ‘V’ preparation A ‘double V’ preparation Lack of side wall fusion does not exist with MMA
What is the leg length of a fillet weld? a) b) c) d)
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Must overlap on the external surface of a pipe or plate by at least 1.5mm Must be grounded Must never be grounded None of the above
The inspection of a product or service A management system designed only to ensure compatibility Not solely related to planning and inspection The implementation of quality control
Which welding process is considered the most versatile? a) b) c) d)
SAW TIG MIG/MAG MMA
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material
154
Quality assurance: a) b) c) d)
155
Which NDT method would never be use on a 6” aluminum pipe weld? a) b) c) d)
156
Must have at a thorough knowledge of NDT Must know how to interpret radiographs Must have a thorough knowledge of welding metallurgy None of the above All of the above
Which of the following is not an inert gas? a) b) c) d)
159
Because it is applied at a high amperage Because it is applied when the root is still hot Because it could cause ‘hot – shortness’ Because it heat treats the root
Generally speaking a welding inspector, as a minimum requirement: a) b) c) d) e)
158
Radiography Magnetic particle inspection Ultrasonic testing Dye penetrant testing
Why is hot – pass so-called? a) b) c) d)
157
Is an other term for inspection Related to all activities and functions concerned with the attainment of quality Is the activity of ensuring documents relating to specific contracts are in order Is the activity of carrying out quality control
Argon Xenon Carbon dioxide Helium
Why is welding is shielded? a) b) c) d)
To eliminate hydrogen To retard the cooling rate of the weld To eliminate the atmosphere To ensure maximum heat input
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160
The primary duty of welding inspector: a) b) c) d)
161
Which of the following welding processes is most susceptible to lack of fusion? a) b) c) d)
162
c) d) e)
Preferable to butt welds due to high strength Difficult to assess with Non Destructive Testing in comparison with butt (grove) welds Used only for ‘appearance’ purposes Only feasible on steels All of the above
API stands for a) b) c) d)
164
Submerged arc CO2 (metal active gas) Manual metal arc Tungsten inert gas
Fillet welds are a) b)
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Is ensure welds are defect free Is to ensure the weld is free from residual stresses Is to write job specifications Is to ensure all welding and associated activities are carried out in accordance with the procedure(s)
Associated Pipeline Industries American Pipe Institute American Pipeline Institute American Petroleum Institute
When welding using the MMA process, varying the arc length will give the most variation of: a) b) c) d)
Voltage Amperage Polarity None of the above
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165
Lap joints contain: a) b) c) d)
166
Which arc welding process utilizes a non-consumable electrode? a) b) c) d) e)
167
Basic Cellulosic Rutile None of the above
What do you understand by the term ‘minimum interpass temperature” a) b) c) d)
170
Must know how to interpret radiographs May be required to interpret radiographs on certain contracts Should be able to weld Both b and c All of the above
Which electrodes are very susceptible to causing porosity in the deposited welds if long arc employed? a) b) c) d)
169
MIG TIG MMA SAW All of the above
A welding Inspector: a) b) c) d) e)
168
Fillet welds Corner joints Butt welds Single bevel butt welds
Minimum pre heat temperature Minimum stress relieve temperature The lowest temperature to be used when normalizing The lowest temperature allowed during welding and between passes
Is it permissible to allow a single ‘V’ butt weld to cool down passes? a) b) c) d)
It is solely the decision of the welder It depends on the requirement of the procedure and specifications It is solely the decision of the welding inspector No, all welds should be completed before dropping the temperature to ambient
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171
What is the problem with ‘restraint’ during welding? a) b) c) d)
172
Which mechanical test (s) can b e used to make an assessment of surfacing breaking defects? a) b) c) d) e)
173
Plasticity Ductility Elasticity Malleability
Fluctuating load is: cyclic stresses, below the UTS on a weld component may lead to: a) b) c) d)
176
To assess tensile strength To assess ductility To assess yield strength All of the above could be assessed
When a metal returns to its original shape after an applied load has been removed, the metal is said to have: a) b) c) d)
175
Bend test Nick – break test Macro test None of the above All of the above
What is the purpose of a tensile test? a) b) c) d)
174
It does not cause a problem It may lead to cracking, especially with small welds between large components It causes distortion Restraint is term not used in relation to welding
Tensile failure Yield failure Fatigue failure Shear failure
Stress is equal to: a) b) c) d)
Stress Load divided by cross – sectional area Extension of gauge length divided by original gauge length Toughness
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177
Strain is equal to: a) b) c) d)
178
Stress can be measured in: a) b) c) d)
179
BS 639 BS 638 BS 18 BS 499
How could you accurately measure the root radius of a charpy or Izod specimen? a) b) c) d)
182
An oval tube Another term for burn through A type of porosity A shrinkage defect
Which British standard relates to welding term and symbols a) b) c) d)
181
N/mm² PSI mm Both a and b
What is a crater pipe? a) b) c) d)
180
Stress Load divide by cross – sectional are Extension of gauge length divided by the original gauge length Toughness
With a machine called shadowgraph With a rule With a vernier caliper With a densitometry
Herringbone porosity is: a) b) c) d) e)
A particular pattern of porosity Made up of wormholes Made up of piping All the above are correct None of the above
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