cwi test flashcards

CWI TEST Flashcards

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CWI TEST

D1.1 and CWI Test

146

11/30/2011

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Term

The effective throat of a complete penetrationgroove weld shall be

Definition

The thickness of the thinner part joined

Term

When welding lengthwise connecting two roundbars, the proper symbol would be

Definition

Flare V Groove weld

Term

Fillet welds may be used to connect skewed Tjoints provided the plates are set at an angle of

not less than

Definition

30

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Term

The minimum thickness for a plug weld in material1" thick shall be

Definition

5/8"

Term

Welding shall not be done when:

Definition

When ambient temperature is lower than 0F 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 0F 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 weldermust be certified for

Definition

Structural

Term

Re-entrant copes shall have a minimum radius of:

Definition

1"

CWI TEST Flashcards


Term

Where tight fit of intermediate stiffeners isspecified, 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 ajoint. The following shall be used

Definition

Extension bars & runoff plates

Term

In repairing cracks in a weld, remove the crackand sound weld metal how far beyond each end of

the crack

Definition

2"

Term

The removal of slag from a deposited weld beadis:

Definition

Mandatory

CWI TEST Flashcards


Term

What electrodes have low hydrogen coating?

Definition

Electrodes ending 5, 6, or 8.

Term

With which process would an ER70S-X electrodebe 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

CWI TEST Flashcards


Term

Peening is not permitted on

Definition

Root and surface layers of welds5.27

Term

The suggested minimum nominal thickness ofbacking bars for SMAW process is

Definition

3/16

Term

Pre-heat and interpass temperatures must besufficient to

Definition

Prevent crack formation

Term

Low hydrogen electrodes exposed to theatmosphere 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 shallbe:

Definition

Overall length of full size fillet including boxing

CWI TEST Flashcards


Term

Caulking of welds; What is it and is it permitted

Definition

Caulking of welds is to plastically deform weld orbase metal surfaces to seal or obscure

discontinuities as undercut, piping porosity, pinholes,

cracks, etc. Caulking is not permitted on mostmetals.

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 weldshall be:

Definition

1 1/2"

Term

The 'U' in joint designation TC-U9a refers to:

Definition

Metal thickness, U = Unlimited

CWI TEST Flashcards


Term

Arc strikes outside the area of permanent weldsshould be:

Definition

Avoided

Term

Base metal specification may be found in:

Definition

ASTM

Term

Information regarding back gouging of roots in asingle bevel groove weld without backing is found

in footnotesection:

Definition

Note 4

Term

What is the required root opening for the SMAwelded CJP single-U-groove weld:

Definition

0 to 1/8"

Term

When spacers are used in the double-bevelgroove weld, the weld is not to be complete until:

Definition

Spacer removed by gouging to sound metal be-fore welding second side.

CWI TEST Flashcards


Term

The size of the spacer for double-V groove weldusing 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 positionat 20 angle:

Definition

1/2"

Term

A single J-groove weld preparation in thehorizontal position shall be made with SMAW &

groove angle of:

Definition

45

Term

What is the root opening for a partial jointpenetration square groove weld butt joint of

material 1/4" thick:

Definition

1/8"

Term

A break in the arrow shaft in the symbol in thesingle bevel groove weld indicates:

Definition

Which plate to chamfer

CWI TEST Flashcards


Term

What is the maximum base metal thickness in asingle bevel groove weld:

Definition

U = Unlimited

Term

What is the included angle of preparation for thedouble-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 weldedshall be free of what?

Definition

Scale, slag, rust, moisture, grease, etc.

Term

If a welder is qualified by testing in 3/8 inch thicktubular structural steel in the 6-GR position CJP

using aE701 8 electrode, is the welder qualified to weld aPJP on 1 inch thick Structural Steel plate in the

vertical downposition?

Definition

NO

CWI TEST Flashcards


Term

It is usually good practice to oscillate which of themild steel SMAW electrodes

Definition

E6010 & E6011

Term

The E7024 electrode may be used in whatpositions?

Definition

Flat and horizontal

Term

Which of the SMAW electrodes has an ironpowder covering?

Definition

Electrodes with last digit "4"

Term

Which of the SMAW electrodes has an ironpowder and low-hydrogen covering?

Definition

Electrodes with last digit "8"

Term

Which welding process would an E7018 electrodebe used with?

Definition

SMAW

CWI TEST Flashcards


Term

Which welding process would an E70T-Xelectrode 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 flatposition, and in one pass shall be how much?

Definition

3/8"

Term

Continuous solid wire electrode ( E70S-X ) used insemi-automatic welding would be used in which

process?

Definition

GMAW

Term

Members distorted by welding may bestraightened by application of limited amounts of

localized heat. Thetemperature of heated areas as measured by

approved methods shall not exceed how much forQuenched and

tempered ( Q. & T.) steel nor how much for othersteels.?

Definition

Q&T1100F, Other 1200F

CWI TEST Flashcards


Term

What is the minimum thickness of material to beused for weld washers?

Definition

0.05"

Term

When parts are to be fillet welded, in a lap joint ofmaterial under 3" thick the allowable separation of

fayingsurfaces shall not exceed how much?

Definition

3/16" Max

Term

The maximum size electrode allowed for the rootpass of an overhead fillet weld is what diameter?

Definition

5/32"

Term

What is the maximum permitted carbon equivalentfor reinforcing steel that may be welded without

prior qualificationtests?

Definition

0.65 %

Term

The first 7 in the E71T-7 designates what?

Definition

The tensile strength in 10,000's of psi

CWI TEST Flashcards


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 largestallowable 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 tobe in what positions?

Definition

All positions

Term

Which of the SMAW electrodes has an ironpowder and iron oxide covering?

Definition

SMAW mild steel electrodes where last digit is"7", ie. E6027

CWI TEST Flashcards


Term

The E6011 electrode will give more penetrationthan 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 iscomputed by measuring the shortest distance

between what twopoints?

{AW

Definition

The root to the face

Term

Low hydrogen shielded metal arc electrodes shallbe protected from moisture. The E70XX low

hydrogen electrodesshall be returned to an oven within what period of

time?

Definition

4 hours

Term

In butt weld root pass in the horizontalposition,the thickness of weld metal that may be

built up behind the ad- vancing arc shall be how large?

Definition

5/16"

CWI TEST Flashcards


Term

Between "Structural Welding Code - Steel" Dl.l and"Structural Welding Code - Sheet Steel" D1.3,

there is Ma metal thickness overlap of the minimum for Dl.land the maximum for D1.3. How much overlap of

metalthickness is there?

Definition

0.055 = approx. 1/16 inch.

Term

Even if prior qualification is made, what is themaximum permitted carbon equivalent for

reinforcing steel that is to be welded?

Definition

0.75%

Term

In which positions is 1/2" the maximum sizeallowed 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 temperaturefor ASTM A572 grade 60 structural steel 2" thick

welded with SMAW process is how much?

Definition

225F

CWI TEST Flashcards


Term

The minimum preheat and interpass temperaturefor structural steel 1/2" welded with the SMAW

process andan electrode other than Low Hydrogen is how

much?

Definition

32F

Term

The largest electrode permitted when welding inthe flat position is what diameter

Definition

5/16"

Term

E7018 electrodes are used with what type ofwelding current

Definition

AC & DCEP

Term

Should back-up strips or bars be removed from allwelds? Explain

Definition

No; Not mandatory but permissible

Term

Shielded metal arc electrodes with low hydrogencovering shall be kept dry in storage ovens. Low

hydrogenelectrodes of the E80XX series when taken from

the oven shall be used within what period of time?

Definition

2 hours

CWI TEST Flashcards


Term

Except for root pass, the largest electrodepermitted for out of position welding is what

diameter

Definition

1/4

Term

Reverse polarity means that the electrode iswhich; .. . positive, negative or netural ?

Definition

Positive

Term

What does "CJP" in the tail specifications part ofa 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 latestedition of what specification published by the

American WeldingSociety?

Definition

ANSI/AWSZ49.1

CWI TEST Flashcards


Term

If the tensile strength of a single pass weld madewith an E6010 electrode is 60,000 p.s.i. what would

the tensilestrength of a six pass weld be?

Definition

60,000 psi

Term

The amount of lap required for a fillet welded lapjoint shall be at least five times the thickness of

the thinnerplate not less than how much?

Definition

1 inch

Term

Backing strips are used to prevent meltingthrough 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 Tjoint, to be welded with fillet weld, shall not be

less than howmany degrees to be considered as effective in

transmitting applied force?

Definition

30

Term

The minimum thickness of a plug or slot weld in3/8" plate is how much?

Definition

3/8"

CWI TEST Flashcards


Term

The largest size of crater permitted and left at theend of a weld is how much?

Definition

No crater of any size is allowed

Term

A fillet weld when measured for size shall bemeasured how?

Definition

Leg length of the largest inscribed isosceles rt.triangle

Term

what are the education and experiencerequirements for a CWI? CAWI?

Definition

CWI: 5 years experience, or 3 years & a technicaldegree; 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'sor engineer's

Term

what document(s) cover(s) safety in welding andcutting?

Definition

ANSI Z49.1

CWI TEST Flashcards


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 whatdistance from the joint?

Definition

1"

Term

What topics are covered by ASME Boiler andPressure Vessel Code sections V, VIII, & IX?

Definition

V covers nondestructive examination; VIII coversUnfired Pressure Vessels, and IX covers Welding

and Brazing Qualifications

Term

In structural applications, when the metalthickness is less than 1/8", what AWS code

applies?

Definition

AWS D1.3 - sheet metal

CWI TEST Flashcards


Term

Fillet welds may be measured using a tolerance of:____

Definition

-1/32"

Term

is the name of the document that prescribes thedetails of how a weld must be performed.

Definition

WPS - Welding Procedure Specification

Term

When it is impractical for the welding inspector twitness all tests and observe all welds duringproduction, what kind of inspection results?

Definition

random-partial

Term

the welding inspector is responsible for judgingacceptability of a product in accord with what?

Definition

a written document

Term

which code choices are available for taking AWSQC1 CWI/CAWI exams?

Definition

AWS D1.1; API 1104; AWS D1.2 (structuralaluminum); AWS D1.5 (Bridge); AWS D15.1

(Railroad); ASME VII & IX; ASME IX, B31.1, &B31.3

CWI TEST Flashcards


Term

AWS D1.1 specifies that nondestructive testingmust 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 whatdistance 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 andPressure Vessel Code sections V, VIII, & IX?

Definition

V covers nondestructive examination; VIII coversUnfired Pressure Vessels, and IX covers Welding

and Brazing Qualifications

CWI TEST Flashcards


Term

In structural applications, when the metalthickness is less than 1/8", what AWS code

applies?

Definition

AWS D1.3 - sheet metal

Term

which code choices are available for taking AWSQC1 CWI/CAWI exams?

Definition

AWS D1.1; API 1104; AWS D1.2 (structuralaluminum); 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 orgreater, what is the allowable undercut? Are there

exceptions?

Definition

1/16", no exceptions

Term

in cases of dispute over welding terms, whatdocument prevails?

Definition

AWS A3.0

Term

the standard describing the requirements forwelding cross-country pipeline is:

Definition

API 1104

CWI TEST Flashcards


Term

acetylene becomes unstable above whatpressure?

Definition

15psi

Term

safety training is mandated under the provisionsof 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 ofE-70XX SMAW electrodes

Definition

701X is all positions, 702X is flat and horizontalonly

Term

T or F: according to AWS D1.1, steel backing ongroove welds must be continuous.

Definition

TRUE

CWI TEST Flashcards


Term

At what level are currents considered "primaryshock 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 weldedand surfaces adjacent must be free from what

elements?

Definition

thick scale, slag, moisture, rust, grease, and otherforeign material. Paint & mill scale (not loose or

thick) are acceptable

Term

what is the numerical designation for the AWSfiller metal specification "Carbon Steel Covered

Arc Welding Electrodes"?

Definition

A5.1

Term

what is the numerical designation for the AWSfiller metal specification "Low Alloy Steel Covered

Arc Welding Electrodes"?

Definition

A5.5

CWI TEST Flashcards


Term

The American Welding Society certifies weldinginspectors 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 WeldedConnections; 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 inspectorsdefined by the AWS D1.1? What are their roles?

Definition

Fabrication/Erection (QC), and Verification (QA)

Term

"Authorized Inspector" is a term associated withwhat? By what organization are they certified?

Definition

an "Authorized Inspector" is one who has bottom-line QC responsibility; they are certified by theNational Board of Boiler and Pressure Vessel

Inspectors

Term

How often are new editions of the AWS AD1.1published?

Definition

every 2 years

CWI TEST Flashcards


Term

what does the "Code of Ethics" of the AWS QC1consider 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 themaximum allowable undercut in a fillet weld? Are

there exceptions?

Definition

1/32" exception: up to 1/16" for any accumulatedlength 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 aparticular object or component

CWI TEST Flashcards


Term

what is a weld discontinuity?

Definition

an interruption in the typical structure of thematerial

Term

what is a weld defect?

Definition

a discontinuity or discontinuities that render aproduct unacceptable

Term

what is an RFI?

Definition

Request For Information

Term

the maximum atmospheric exposure time allowedby AWS D1.1 for E-7018 electrodes is what?

Definition

4 hours

Term

According to AWS D1.1, the separation betweenfaying surfaces of butt joints landing on a backing

bar cannot exceed what amount?

Definition

1/16"

CWI TEST Flashcards


Term

what is the national organization for concrete andsoils technicians?

Definition

ASCET

Term

under the provisions of AWS D1.1, who isultimately and legally responsible for assuring that

the welders are certified?

Definition

the contractor

Term

most often, preheat and interpass temperaturesare measured using what?

Definition

temperature-indicating crayons (also contactpyrometer)

Term

when the base metal must be preheated prior towelding, AWS D1.1 specifies that the arts must beheated 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

CWI TEST Flashcards


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Term

once removed from their original containers, AWSD1.1 requires that low-hydrogen electrodes be

maintained in electrode ovens at what minimumtemperature?

Definition

250F

Term

What is an ITL?

Definition

Independent Testing Laboratory

Term

A CWI or CAWI must have passed what eyetest(s)?

Definition

20/40 with or without correction and Jaeger J-2 at12" near vision acuity (color test may be required

by employer, but is not required by AWS)

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