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CWI TEST
D1.1 and CWI Test
146
Other
11/30/2011

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Term
The effective throat of a complete penetration groove weld shall be
Definition
The thickness of the thinner part joined
Term
When welding lengthwise connecting two round bars, the proper symbol would be
Definition
Flare V Groove weld
Term
Fillet welds may be used to connect skewed T joints provided the plates are set at an angle of not less than
Definition
30°
Term
The minimum thickness for a plug weld in material 1" thick shall be
Definition
5/8"
Term
Welding shall not be done when:
Definition
When ambient temperature is lower than 0°F or
Surfaces are wet or exposed to rain, snow, or
high wind or When welders are exposed to in-
clement conditions.
Term
When ambient temperature is lower than 0°F or
Surfaces are wet or exposed to rain, snow, or
high wind or When welders are exposed to in-
clement conditions.
Definition
AWSA5.17 & A5.23
Term
When welding 5/16" plate in the field, a welder must be certified for
Definition
Structural
Term
Re-entrant copes shall have a minimum radius of:
Definition
1"
Term
Where tight fit of intermediate stiffeners is specified, it shall be defined as allowing a gap of up to
Definition
1/16"
Term
Spatter is caused by
Definition
Welding current too high or arc length too long
Term
In order to insure sound welds at the ends of a joint. The following shall be used
Definition
Extension bars & runoff plates
Term
In repairing cracks in a weld, remove the crack and sound weld metal how far beyond each end of the crack
Definition
2"
Term
The removal of slag from a deposited weld bead is:
Definition
Mandatory
Term
What electrodes have low hydrogen coating?
Definition
Electrodes ending 5, 6, or 8.
Term
With which process would an ER70S-X electrode be used
Definition
GMAW
Term
Oven storage of low hydrogen electrodes is:
Definition
To avoid damage by atmospheric moisture
Term
Welded joints not pre-qualified shall be:
Definition
Qualified
Term
Welder certification may be waived by
Definition
No one
Term
Peening is not permitted on
Definition
Root and surface layers of welds
5.27
Term
The suggested minimum nominal thickness of backing bars for SMAW process is
Definition
3/16
Term
Pre-heat and interpass temperatures must be sufficient to
Definition
Prevent crack formation
Term
Low hydrogen electrodes exposed to the atmosphere for longer periods then that permitted by codes shall be £
redried no more than
Definition
One time
Term
The minimum effective length of a fillet weld shall be:
Definition
Overall length of full size fillet including boxing
Term
Caulking of welds; What is it and is it permitted
Definition
Caulking of welds is to plastically deform weld or base metal surfaces to seal or obscure discontinuities as undercut, piping porosity, pin holes,
cracks, etc. Caulking is not permitted on most
metals.
Term
In gas metal arc welding the electrode is:
Definition
Consumable
Term
The effective area of a fillet weld is:
Definition
The effective weld length X the effective throat.
Term
The minimum length of an intermittent fillet weld shall be:
Definition
1 1/2"
Term
The 'U' in joint designation TC-U9a refers to:
Definition
Metal thickness, U = Unlimited
Term
Arc strikes outside the area of permanent welds should be:
Definition
Avoided
Term
Base metal specification may be found in:
Definition
ASTM
Term
Information regarding back gouging of roots in a single bevel groove weld without backing is found in footnote
section:
Definition
Note 4
Term
What is the required root opening for the SMA welded CJP single-U-groove weld:
Definition
0 to 1/8"
Term
When spacers are used in the double-bevel groove weld, the weld is not to be complete until:
Definition
Spacer removed by gouging to sound metal be-fore welding second side.
Term
The size of the spacer for double-V groove weld using a 30° bevel and welded in the overhead position shall be:
Definition
1/8" X 3/8"
Term
What is the required root opening for a single-V-groove weld to a back-up strip welded in the vertical position
at 20° angle:
Definition
1/2"
Term
A single J-groove weld preparation in the horizontal position shall be made with SMAW & groove angle of:
Definition
45°
Term
What is the root opening for a partial joint penetration square groove weld butt joint of material 1/4" thick:
Definition
1/8"
Term
A break in the arrow shaft in the symbol in the single bevel groove weld indicates:
Definition
Which plate to chamfer
Term
What is the maximum base metal thickness in a single bevel groove weld:
Definition
U = Unlimited
Term
What is the included angle of preparation for the double-V-groove weld. Using a spacer and a 1/2" root
Definition
20°
Term
In an E70 1 8 electrode, what does the E designate
Definition
Electrode
Term
Before welding a joint, the surfaces to be welded shall be free of what?
Definition
Scale, slag, rust, moisture, grease, etc.
Term
If a welder is qualified by testing in 3/8 inch thick tubular structural steel in the 6-GR position CJP using a
E701 8 electrode, is the welder qualified to weld a PJP on 1 inch thick Structural Steel plate in the vertical down
position?
Definition
NO
Term
It is usually good practice to oscillate which of the mild steel SMAW electrodes
Definition
E6010 & E6011
Term
The E7024 electrode may be used in what positions?
Definition
Flat and horizontal
Term
Which of the SMAW electrodes has an iron powder covering?
Definition
Electrodes with last digit "4"
Term
Which of the SMAW electrodes has an iron powder and low-hydrogen covering?
Definition
Electrodes with last digit "8"
Term
Which welding process would an E7018 electrode be used with?
Definition
SMAW
Term
Which welding process would an E70T-X electrode be used with?
Definition
FCAW
Term
Single bevel groove, with 45° angle and backing, the root opening must be what?
Definition
1/4"
Term
The maximum size of a fillet weld in the flat position, and in one pass shall be how much?
Definition
3/8"
Term
Continuous solid wire electrode ( E70S-X ) used in semi-automatic welding would be used in which process?
Definition
GMAW
Term
Members distorted by welding may be straightened by application of limited amounts of localized heat. The
temperature of heated areas as measured by approved methods shall not exceed how much for Quenched and
tempered ( Q. & T.) steel nor how much for other steels.?
Definition
Q&T1100°F, Other 1200°F
Term
What is the minimum thickness of material to be used for weld washers?
Definition
0.05"
Term
When parts are to be fillet welded, in a lap joint of material under 3" thick the allowable separation of faying
surfaces shall not exceed how much?
Definition
3/16" Max
Term
The maximum size electrode allowed for the root pass of an overhead fillet weld is what diameter?
Definition
5/32"
Term
What is the maximum permitted carbon equivalent for reinforcing steel that may be welded without prior qualification
tests?
Definition
0.65 %
Term
The first 7 in the E71T-7 designates what?
Definition
The tensile strength in 10,000's of psi
Term
The last digit "7" in E7027 designates what?
Definition
Type of flux coating on electrode - Iron powder /
Iron oxide; & type of current used - AC or
DCEN.
Term
When welding a flat fillet root pass, the largest allowable electrode is what diameter?
Definition
3/16"
Term
The "S" in E70S-3 designates what?
Definition
GMAW - Solid wire electrode
Term
The digit "1" in E7018 indicates that welding is to be in what positions?
Definition
All positions
Term
Which of the SMAW electrodes has an iron powder and iron oxide covering?
Definition
SMAW mild steel electrodes where last digit is
"7", ie. E6027
Term
The E6011 electrode will give more penetration than all other SMAW electrodes except what?
Definition
E6010only
Term
The "60" in E6011 indicates what
Definition
60,000 psi Tensile strength
Term
The effective throat thickness of a fillet weld is computed by measuring the shortest distance between what two
points?
{AW
Definition
The root to the face
Term
Low hydrogen shielded metal arc electrodes shall be protected from moisture. The E70XX low hydrogen electrodes
shall be returned to an oven within what period of time?
Definition
4 hours
Term
In butt weld root pass in the horizontal position,the thickness of weld metal that may be built up behind the ad-
vancing arc shall be how large?
Definition
5/16"
Term
Between "Structural Welding Code - Steel" Dl.l and "Structural Welding Code - Sheet Steel" D1.3, there is M
a metal thickness overlap of the minimum for Dl.l and the maximum for D1.3. How much overlap of metal
thickness is there?
Definition
0.055 = approx. 1/16 inch.
Term
Even if prior qualification is made, what is the maximum permitted carbon equivalent for reinforcing steel that
is to be welded?
Definition
0.75%
Term
In which positions is 1/2" the maximum size allowed for a fillet weld made in one pass?
Definition
Vertical
Term
Using DC straight polarity, the electrode is which; . . . . positive, negative or neutral
Definition
Negative
Term
The minimum preheat and interpass temperature for ASTM A572 grade 60 structural steel 2" thick welded with ™
SMAW process is how much?
Definition
225°F
Term
The minimum preheat and interpass temperature for structural steel 1/2" welded with the SMAW process and
an electrode other than Low Hydrogen is how much?
Definition
32°F
Term
The largest electrode permitted when welding in the flat position is what diameter
Definition
5/16"
Term
E7018 electrodes are used with what type of welding current
Definition
AC & DCEP
Term
Should back-up strips or bars be removed from all welds? Explain
Definition
No; Not mandatory but permissible
Term
Shielded metal arc electrodes with low hydrogen covering shall be kept dry in storage ovens. Low hydrogen
electrodes of the E80XX series when taken from the oven shall be used within what period of time?
Definition
2 hours
Term
Except for root pass, the largest electrode permitted for out of position welding is what diameter
Definition
1/4
Term
Reverse polarity means that the electrode is which; .. . positive, negative or netural ?
Definition
Positive
Term
What does "CJP" in the tail specifications part of a weld symbol mean?
Definition
Complete Joint Penetration
Term
What kind of metal is classified as 6061-T6?
Definition
Aluminum
Term
Safety precautions shall conform to the latest edition of what specification published by the American Welding
Society?
Definition
ANSI/AWSZ49.1
Term
If the tensile strength of a single pass weld made with an E6010 electrode is 60,000 p.s.i. what would the tensile
strength of a six pass weld be?
Definition
60,000 psi
Term
The amount of lap required for a fillet welded lap joint shall be at least five times the thickness of the thinner
plate not less than how much?
Definition
1 inch
Term
Backing strips are used to prevent melting through roots of grooves welds by using what for backing material?
Definition
Metal, weld metal, carbon,flux, gas, glass tape, etc.
Term
The minimum angle of the plates in a skewed T joint, to be welded with fillet weld, shall not be less than how
many degrees to be considered as effective in transmitting applied force?
Definition
30°
Term
The minimum thickness of a plug or slot weld in 3/8" plate is how much?
Definition
3/8"
Term
The largest size of crater permitted and left at the end of a weld is how much?
Definition
No crater of any size is allowed
Term
A fillet weld when measured for size shall be measured how?
Definition
Leg length of the largest inscribed isosceles rt.
triangle
Term
what are the education and experience requirements for a CWI? CAWI?
Definition
CWI: 5 years experience, or 3 years & a technical degree; CAWI: 2 years experience, or 6 months & a technical degree
Term
welding inspectors can be categorized how?
Definition
1) code or governing body; 2) purchaser's, customer's, or owner's (QA); 3) fabricator's, manufacturer's, or contractor's (QC); 4) architect's or engineer's
Term
what document(s) cover(s) safety in welding and cutting?
Definition
ANSI Z49.1
Term
which is most general of the following terms: code, standard, specification?
Definition
standard
Term
ASME B31.1 & B31.3 cover what subjects?
Definition
B31.1 covers pressure vessels and power piping, B31.3 covers chemical process piping
Term
Interpass temperatures are measured what distance from the joint?
Definition
1"
Term
What topics are covered by ASME Boiler and Pressure Vessel Code sections V, VIII, & IX?
Definition
V covers nondestructive examination; VIII covers Unfired Pressure Vessels, and IX covers Welding and Brazing Qualifications
Term
In structural applications, when the metal thickness is less than 1/8", what AWS code applies?
Definition
AWS D1.3 - sheet metal
Term
Fillet welds may be measured using a tolerance of :____
Definition
-1/32"
Term
is the name of the document that prescribes the details of how a weld must be performed.
Definition
WPS - Welding Procedure Specification
Term
When it is impractical for the welding inspector t witness all tests and observe all welds during production, what kind of inspection results?
Definition
random-partial
Term
the welding inspector is responsible for judging acceptability of a product in accord with what?
Definition
a written document
Term
which code choices are available for taking AWS QC1 CWI/CAWI exams?
Definition
AWS D1.1; API 1104; AWS D1.2 (structural aluminum); AWS D1.5 (Bridge); AWS D15.1 (Railroad); ASME VII & IX; ASME IX, B31.1, & B31.3
Term
AWS D1.1 specifies that nondestructive testing must be performed by an individual qualified in accordance with what document?
Definition
SNT-TC-1a
Term
ASME B31.1 & B31.3 cover what subjects?
Definition
B31.1 covers pressure vessels and power piping, B31.3 covers chemical process piping
Term
Interpass temperatures are measured what distance from the joint?
Definition
1"
Term
welding symbols are defined in what publication?
Definition
AWS A2.4
Term
What topics are covered by ASME Boiler and Pressure Vessel Code sections V, VIII, & IX?
Definition
V covers nondestructive examination; VIII covers Unfired Pressure Vessels, and IX covers Welding and Brazing Qualifications
Term
In structural applications, when the metal thickness is less than 1/8", what AWS code applies?
Definition
AWS D1.3 - sheet metal
Term
which code choices are available for taking AWS QC1 CWI/CAWI exams?
Definition
AWS D1.1; API 1104; AWS D1.2 (structural aluminum); AWS D1.5 (Bridge); AWS D15.1 (Railroad); ASME VII & IX; ASME IX, B31.1, & B31.3
Term
for fillet welds on material greater than 1" thick or greater, what is the allowable undercut? Are there exceptions?
Definition
1/16", no exceptions
Term
in cases of dispute over welding terms, what document prevails?
Definition
AWS A3.0
Term
the standard describing the requirements for welding cross-country pipeline is:
Definition
API 1104
Term
acetylene becomes unstable above what pressure?
Definition
15psi
Term
safety training is mandated under the provisions of what agency?
Definition
OSHA
Term
Name the ending numbers in the classification E-70XX for low hydrogen SMAW electrodes
Definition
70X5, 70X6, 70X8
Term
Name the position numbers in the classification of E-70XX SMAW electrodes
Definition
701X is all positions, 702X is flat and horizontal only
Term
T or F: according to AWS D1.1, steel backing on groove welds must be continuous.
Definition
TRUE
Term
At what level are currents considered "primary shock currents" and hence dangerous?
Definition
6mA
Term
what is the most common ASTM structural steel? What is its minimum yield strength? What is its minimum Ultimate Tensile Strength (UTS)?
Definition
A-36, 36ksi (36,000 psi), and 58ksi
Term
AWS D1.1 states that all surfaces to be welded and surfaces adjacent must be free from what elements?
Definition
thick scale, slag, moisture, rust, grease, and other foreign material. Paint & mill scale (not loose or thick) are acceptable
Term
what is the numerical designation for the AWS filler metal specification "Carbon Steel Covered Arc Welding Electrodes"?
Definition
A5.1
Term
what is the numerical designation for the AWS filler metal specification "Low Alloy Steel Covered Arc Welding Electrodes"?
Definition
A5.5
Term
The American Welding Society certifies welding inspectors according to what document?
Definition
AWS QC1
Term
what topics do the sections of AWS D1.1 cover?
Definition
1) General Requirements; 2) Design of Welded Connections; 3) Prequalification of WPSs; 4)Qualification; 5) Fabrication; 6) Inspection; 7) Stud Welding; 8) Strengthening and Repair of Existing Structures
Term
what are the two kinds of welding inspectors defined by the AWS D1.1? What are their roles?
Definition
Fabrication/Erection (QC), and Verification (QA)
Term
"Authorized Inspector" is a term associated with what? By what organization are they certified?
Definition
an "Authorized Inspector" is one who has bottom-line QC responsibility; they are certified by the National Board of Boiler and Pressure Vessel Inspectors
Term
How often are new editions of the AWS AD1.1 published?
Definition
every 2 years
Term
what does the "Code of Ethics" of the AWS QC1 consider to be the most important obligation of a welding inspector
Definition
public safety
Term
what is a MTR?
Definition
Material Test Report
Term
For material less than 1" thick what is the maximum allowable undercut in a fillet weld? Are there exceptions?
Definition
1/32" exception: up to 1/16" for any accumulated length up to 2" in 12"
Term
the term "Contract Documents" refers to what?
Definition
1) all applicable codes; 2) the (structural) plans; 3) the specifications
Term
what is a specification?
Definition
a document that describes the requirements for a particular object or component
Term
what is a weld discontinuity?
Definition
an interruption in the typical structure of the material
Term
what is a weld defect?
Definition
a discontinuity or discontinuities that render a product unacceptable
Term
what is an RFI?
Definition
Request For Information
Term
the maximum atmospheric exposure time allowed by AWS D1.1 for E-7018 electrodes is what?
Definition
4 hours
Term
According to AWS D1.1, the separation between faying surfaces of butt joints landing on a backing bar cannot exceed what amount?
Definition
1/16"
Term
what is the national organization for concrete and soils technicians?
Definition
ASCET
Term
under the provisions of AWS D1.1, who is ultimately and legally responsible for assuring that the welders are certified?
Definition
the contractor
Term
most often, preheat and interpass temperatures are measured using what?
Definition
temperature-indicating crayons (also contact pyrometer)
Term
when the base metal must be preheated prior to welding, AWS D1.1 specifies that the arts must be heated to the required minimum for at least how far in all directions prior to welding?
Definition
3" (or thickness of material, whichever is greater))
Term
ASTM is an abbreviation for what?
Definition
American Society for Testing and Materials
Term
once removed from their original containers, AWS D1.1 requires that low-hydrogen electrodes be maintained in electrode ovens at what minimum temperature?
Definition
250°F
Term
What is an ITL?
Definition
Independent Testing Laboratory
Term
A CWI or CAWI must have passed what eye test(s)?
Definition
20/40 with or without correction and Jaeger J-2 at 12" near vision acuity (color test may be required by employer, but is not required by AWS)