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AWS ASME IX Endorsement study materials
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AWS ASME IX Endorsement practice questions

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Question 1QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

ASME BPVC Section IX provides requirements for the qualification of which of the following?

  1. Nondestructive examination personnel and acceptance criteria
  2. Welding, brazing, and fusing procedures and personnel Correct answer.
  3. Base metal chemical composition and mechanical properties
  4. Pressure vessel design and allowable stress values

Explanation

Section IX is a qualification standard for procedures and personnel used in welding, brazing, and fusing. Material specifications, design rules, and NDE acceptance criteria are established by other code sections.

Question 2QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which document provides the welder with the direction needed to make a production weld?

  1. Material test report
  2. Welding procedure specification (WPS) Correct answer.
  3. Welder performance qualification record
  4. Procedure qualification record (PQR)

Explanation

The WPS is the written instruction that tells the welder which variables and practices to use for production welding. The PQR records how a procedure was qualified; it is not the production instruction document.

Question 3QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which document records the variables used and the test results obtained during welding procedure qualification?

  1. Procedure qualification record (PQR) Correct answer.
  2. Welder qualification certificate
  3. Heat treatment chart
  4. Welding procedure specification (WPS)

Explanation

The PQR is the record of the actual variables and the results of the mechanical tests performed on the qualification test coupon. The WPS is the production document prepared from the qualified procedure.

Question 4QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

In Section IX, an essential variable is a condition that, if changed, requires which action?

  1. Only a format revision to the WPS
  2. Inspector approval before the next production weld
  3. No action if the change is noted on the WPS
  4. Requalification of the welding procedure Correct answer.

Explanation

An essential variable affects the mechanical properties or soundness of the weld, so changing it requires a new procedure qualification. Nonessential variables may be changed without requalification.

Question 5QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Who is responsible for certifying a WPS and its supporting PQR as meeting Section IX?

  1. The welder who made the test coupon
  2. The contractor Correct answer.
  3. The base metal manufacturer
  4. The authorized Inspector

Explanation

The contractor is responsible for preparing, qualifying, and certifying the WPS and PQR. The Inspector may review the records but does not certify them on behalf of the contractor.

Question 6QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which item is outside the scope of ASME Section IX?

  1. Qualification of welding operators
  2. Establishment of design allowable stresses Correct answer.
  3. Qualification of plastic fusing procedures
  4. Qualification of brazing procedures

Explanation

Section IX qualifies procedures and personnel; it does not establish design allowables or service requirements. Those rules belong to the applicable construction code.

Question 7QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which part of Section IX contains the requirements for brazing procedure and performance qualification?

  1. Part QF
  2. Part QW
  3. Part QG
  4. Part QB Correct answer.

Explanation

Part QB contains the brazing requirements, while Part QW covers welding and Part QF covers plastic fusing. Part QG contains general requirements that apply across the parts.

Question 8QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which part of Section IX addresses plastic fusing procedure and operator qualification?

  1. Part QB
  2. Part QF Correct answer.
  3. Part QW
  4. Part QG

Explanation

Part QF contains the requirements for plastic fusing procedures and operators. Part QW addresses welding and Part QB addresses brazing.

Question 9QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A contractor changes a nonessential variable in a qualified WPS. What is required by Section IX?

  1. A new PQR is always required
  2. Each welder must be requalified
  3. The WPS may be revised without requalification Correct answer.
  4. The authorized Inspector must approve a new procedure qualification

Explanation

Nonessential variables do not affect the essential properties of the qualified joint, so the WPS may be revised without a new procedure qualification. The supporting PQR remains the record of the original qualification.

Question 10QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

When does a supplementary essential variable become essential?

  1. When notch toughness requirements apply Correct answer.
  2. When the welding is semiautomatic
  3. When the base metal thickness exceeds 1 in. (25 mm)
  4. When the joint is a fillet weld

Explanation

A supplementary essential variable becomes essential only when notch toughness is specified for the application. In that case, changing the variable requires requalification with impact testing.

Question 11QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Under Section IX, which organization may act as the contractor responsible for qualification?

  1. Only the base metal producer
  2. A manufacturer, fabricator, erector, installer, or repair organization Correct answer.
  3. Only the holder of an ASME Certificate of Authorization
  4. Only an independent testing laboratory

Explanation

The contractor is the organization responsible for the welding, brazing, or fusing work. It may be a manufacturer, fabricator, erector, installer, or repair organization; an ASME Certificate of Authorization is not a prerequisite.

Question 12QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Who has the right to examine the PQR after a procedure has been qualified?

  1. Only the welder who made the test coupon
  2. Only the base metal supplier
  3. Only the contractor's legal counsel
  4. The authorized Inspector Correct answer.

Explanation

The PQR must be available to the authorized Inspector for review. The Inspector's access supports verification that the procedure was qualified in accordance with Section IX.

Question 13QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which statement best distinguishes procedure qualification from performance qualification?

  1. Procedure qualification proves a WPS; performance qualification proves a welder Correct answer.
  2. Procedure qualification proves welder skill; performance qualification proves a WPS
  3. The two terms describe the same qualification activity
  4. Procedure qualification applies only to brazing; performance qualification only to welding

Explanation

Procedure qualification demonstrates that a proposed WPS can produce welds meeting the required tests. Performance qualification demonstrates that an individual welder, brazer, or operator can make acceptable welds.

Question 14QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Under Section IX definitions, which person operates machine or automatic welding equipment?

  1. Brazer
  2. Welder
  3. Welding operator Correct answer.
  4. Authorized Inspector

Explanation

A welding operator operates machine or automatic welding equipment. A welder performs manual or semiautomatic welding.

Question 15QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

How is a WPS certified under Section IX?

  1. By the base metal supplier's certificate of compliance
  2. By the Inspector's stamp on the WPS
  3. By the contractor's signature or other certification Correct answer.
  4. By the welder's signature on the test coupon

Explanation

The contractor certifies the WPS, typically by signature or another documented method acceptable under the code. Certification confirms that the WPS is supported by a qualified procedure.

Question 16QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

What values must a PQR record for the essential variables?

  1. The actual values used during qualification Correct answer.
  2. The range proposed for future production
  3. Only the minimum values permitted by the code
  4. Only the nominal values listed in the WPS

Explanation

The PQR records what was actually done during qualification, including the actual essential variable values and the test results. The WPS may then present ranges supported by that qualification.

Question 17QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A WPS lists a nonessential variable at a specific value. Production needs a different value for that same variable. What is the correct action?

  1. Obtain a new PQR signed by the Inspector
  2. Revise the WPS to the new value without new qualification Correct answer.
  3. Requalify all welders for the new value
  4. Qualify a new procedure because every variable is essential

Explanation

A nonessential variable may be changed without requalification because it does not affect the essential properties of the qualified joint. The WPS is revised to reflect the new production condition.

Question 18QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Production requires changing an essential variable from the value recorded in the PQR. What must be done?

  1. Record the change on the PQR and proceed
  2. Revise the WPS and continue under the same PQR
  3. Have only the welder requalified
  4. Requalify the welding procedure by a new test Correct answer.

Explanation

Changing an essential variable invalidates the existing procedure qualification, so a new qualification test and PQR are required. The WPS must then be supported by the new qualification.

Question 19QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which qualification is outside the scope of ASME Section IX?

  1. Welder performance qualification
  2. Nondestructive examination personnel qualification Correct answer.
  3. Plastic fusing operator qualification
  4. Brazing procedure qualification

Explanation

Section IX covers welding, brazing, and fusing procedures and personnel. Nondestructive examination personnel qualification is addressed by other code sections and standards.

Question 20QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which statement about prequalified welding procedures under ASME Section IX is correct?

  1. Prequalified procedures are allowed only for fillet welds
  2. Section IX provides prequalified WPSs for common carbon steels
  3. A WPS is prequalified when the contractor holds an ASME Certificate
  4. Section IX requires qualification by test and provides no prequalified WPS Correct answer.

Explanation

Section IX does not contain a list of prequalified welding procedures; qualification is demonstrated by testing. Other codes may provide prequalified procedures, but that is not a Section IX concept.

Question 21QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A contractor has a qualified WPS and supporting PQR. What does this alone authorize for production?

  1. Immediate production welding without further review
  2. Nothing until the applicable construction code accepts the qualification Correct answer.
  3. Use of the WPS only by the welder who made the test coupon
  4. Automatic qualification of every welder under the contractor

Explanation

Section IX is a reference standard for qualification; the applicable construction code governs whether and how that qualification is used. Production also requires qualified personnel and any other code-required controls.

Question 22QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which statement correctly describes the relationship between a WPS and its supporting PQR?

  1. The WPS is prepared from the PQR, and both are certified by the contractor Correct answer.
  2. The WPS must repeat every actual value recorded in the PQR
  3. The PQR must be rewritten whenever the WPS is revised
  4. The PQR supersedes the WPS for production welding

Explanation

The PQR documents the qualification test, and the WPS is written from the qualified data, often using ranges supported by that test. Both documents are certified by the contractor.

Question 23QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A welder qualified by Contractor A is hired by Contractor B. What is Contractor B required to do under Section IX?

  1. Have the welder's prior employer sign the new WPS
  2. Use the welder only on nonpressure work
  3. Accept the prior qualification without any action
  4. Qualify the welder for the work under Contractor B's program Correct answer.

Explanation

Performance qualification is the responsibility of the contractor for whom the welder works. A new employer must qualify the welder under its own program before assigning qualified production work.

Question 24QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which statement about essential variables for procedure qualification and performance qualification is correct?

  1. Procedure qualification has no essential variables
  2. The essential variables for performance qualification differ from those for procedure qualification Correct answer.
  3. The same essential variable list applies to both
  4. Performance qualification has no essential variables

Explanation

Section IX maintains separate essential variable lists for procedure qualification and for performance qualification. A variable that is essential for one activity is not necessarily essential for the other.

Question 25QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

How long does a welding procedure qualification remain valid under Section IX if no essential variable changes?

  1. Indefinitely, subject to the applicable construction code Correct answer.
  2. One year from the PQR certification date
  3. Until the welder who made the test coupon leaves the contractor
  4. Six months from the PQR certification date

Explanation

Section IX does not impose a time-based expiration on procedure qualification; it remains supported by its PQR unless an essential variable changes. Welder performance qualification has separate continuity requirements.

Question 26QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

When does ASME Section IX become applicable to a contractor's welding?

  1. Only when a construction code, specification, or contract invokes it Correct answer.
  2. Only when the welding is performed in a shop rather than in the field
  3. Automatically, whenever the contractor holds an ASME Certificate of Authorization
  4. Only when the welder requests a qualified procedure in writing

Explanation

Section IX is a qualification standard that has no self-invoking effect; it becomes mandatory when a construction code, specification, or contract references it. It contains no design, fabrication, or weld acceptance rules of its own.

Question 27QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

What is the function of a welding procedure specification (WPS) under ASME Section IX?

  1. It gives the welder the written direction needed for the production weld Correct answer.
  2. It records the variables used and the test results obtained during qualification
  3. It lists the P-numbers of the base metals the contractor may purchase
  4. It certifies that the welder is qualified for the process and position

Explanation

The WPS is the qualified written procedure that directs the welder which variables to use for production welding, and it must be supported by a PQR. It is the instruction, not the qualification record.

Question 28QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Under ASME Section IX, who is responsible for maintaining the procedure qualification records?

  1. The supplier of the base metal and filler metal
  2. The contractor responsible for the welding Correct answer.
  3. The Authorized Inspector who reviews the records
  4. The laboratory that performed the mechanical testing

Explanation

Section IX places responsibility for qualification, and for maintaining WPS, PQR, and welder records, on the contractor. Other parties may perform testing or review records but do not carry this responsibility.

Question 29QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A welder qualified for GTAW has not welded with that process for seven months. What is the status of the qualification?

  1. It has expired and the welder must requalify Correct answer.
  2. It must be extended in writing by the Authorized Inspector
  3. It remains valid because no essential variable has changed
  4. It remains valid, but only for fillet welding

Explanation

A welder's qualification expires when the welder has not used that process for six months or more, and requalification restores it. Continuity of use is a condition of continued validity.

Question 30QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which examination must be performed on a welder qualification test coupon in addition to any mechanical tests?

  1. Visual examination of the completed coupon Correct answer.
  2. Radiographic examination of the coupon
  3. Ultrasonic examination of the coupon
  4. Hardness testing of the coupon

Explanation

Section IX requires the finished test coupon to be visually examined and to meet its acceptance criteria before mechanical testing. Surface cracks or unacceptable surface conditions fail the test regardless of bend results.

Question 31QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A welder's performance qualification was made on a fillet weld test coupon only. What does that qualification cover?

  1. Groove welds only, within the qualified thickness range
  2. Fillet welds and groove welds within the qualified thickness range
  3. Fillet welds only, within the qualified ranges Correct answer.
  4. All welds made with that process, without restriction

Explanation

A fillet weld test coupon qualifies the welder for fillet welding only, within the ranges qualified. A groove weld coupon, by contrast, also qualifies the welder for fillet welds.

Question 32QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

In ASME Section IX, what does the F-number assigned to a filler metal represent?

  1. A grouping of filler metals by usability characteristics Correct answer.
  2. The maximum welding current permitted for the electrode
  3. The base metal group to which the filler metal may be applied
  4. The minimum tensile strength of the deposited weld metal

Explanation

F-numbers group electrodes and rods by usability characteristics such as electrode type and mode of metal transfer, so that qualification with one filler metal covers others in the same group. A change to a different F-number is an essential variable for procedure qualification.

Question 33QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Under Section IX definitions, how is brazing distinguished from soldering?

  1. The filler metal melts below 840°F (450°C) and wets the base metal by capillary action
  2. The base metal is heated above its melting temperature so the edges fuse together
  3. The joint is made by applying pressure only, without any filler metal
  4. The filler metal melts above 840°F (450°C) but below the base metal Correct answer.

Explanation

Brazing uses a filler metal that melts above 840°F (450°C) and below the melting temperature of the base metal; soldering uses a filler metal that melts below that temperature. Brazing qualification is covered in Part QB, while soldering is outside the scope of Section IX.

Question 34QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A WPS was qualified with SA-516 Grade 70 (P-No. 1) base metal. Production requires SA-106 Grade B (P-No. 1) of a thickness within the qualified range. What does Section IX permit?

  1. A new procedure qualification is required because the specification designation changes
  2. The WPS may be used only after the welder is requalified on SA-106 Grade B
  3. The WPS may be used if the other essential variables stay within the qualified ranges Correct answer.
  4. The WPS may be used only if a separate PQR is written for SA-106 Grade B

Explanation

P-numbers group base metals for qualification purposes, so qualification with one base metal in a group covers other base metals in the same group. The thickness and all other essential variables must still be within the ranges qualified.

Question 35QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

When a contractor qualifies a welding procedure, which document governs how the test coupon is welded?

  1. The welding symbol on the production drawing
  2. The welder's performance qualification record
  3. The WPS being qualified, which the coupon must follow Correct answer.
  4. The PQR, which must be written before the coupon is welded

Explanation

The qualification test coupon is welded in accordance with the WPS being qualified. The PQR is then produced from the actual variable values used and the results of the required tests.

Question 36QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A WPS is qualified using a test coupon welded in the flat position only. Production requires vertical-up welding with the same process and materials. What is required?

  1. Requalification of the welders only, using the flat-position WPS
  2. Nothing beyond a note added to the WPS, because position is nonessential
  3. New procedure qualification using a coupon in the required position Correct answer.
  4. Re-certification of the WPS by the Authorized Inspector

Explanation

Welding position is an essential variable for procedure qualification, so a flat-position qualification does not support vertical welding. A new qualification test in the required position is needed.

Question 37QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A WPS was qualified with postweld heat treatment. Production wants to weld in the as-welded condition with all other variables unchanged. What does Section IX require?

  1. Requalification of the welder only, using the same WPS
  2. Only a revision of the WPS, because postweld heat treatment is a nonessential variable
  3. New procedure qualification, since PWHT is an essential variable Correct answer.
  4. Radiography of the first production weld instead of qualification

Explanation

Postweld heat treatment is an essential variable; adding it or deleting it changes the procedure and requires new qualification. Welder performance qualification does not address heat treatment of the weldment.

Question 38QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which test is required to qualify a welding procedure for fillet welds?

  1. A transverse tension test of the test coupon
  2. Guided side bend tests of the test coupon
  3. Macro-examination of a fillet weld specimen Correct answer.
  4. Charpy V-notch impact tests of the weld metal

Explanation

Fillet weld procedure qualification is based on macro-examination of a specimen cut from the test coupon, evaluated against the acceptance criteria of Section IX. Tension and bend tests belong to groove weld procedure qualification.

Question 39QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which mechanical tests are required for procedure qualification of a groove weld?

  1. Charpy impact and hardness tests
  2. Macro-examination only
  3. Tension and bend tests Correct answer.
  4. Radiography and ultrasonic examination

Explanation

Groove weld procedure qualification requires tension and bend specimens taken from the test coupon and tested per Section IX. Impact testing is added only when the construction code imposes notch toughness requirements.

Question 40QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

What is the status of the WPS and PQR forms published in Section IX (QW-482 and QW-483)?

  1. They are mandatory formats, and no other layout is acceptable for a WPS or a PQR
  2. They may be used only with the written approval of the Authorized Inspector
  3. They apply only to brazing and fusing procedure qualification
  4. Suggested formats; other layouts may be used with the required data Correct answer.

Explanation

Section IX requires that the necessary information be recorded, not that a particular form be used. The published forms are guides, so contractors may use their own formats provided all required information is present.

Question 41QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A welder holds a performance qualification for GTAW only. The contractor assigns the welder to SMAW production welding. What does Section IX require?

  1. A qualified SMAW procedure is enough; the welder needs no test
  2. The welder must qualify for SMAW before making SMAW production welds Correct answer.
  3. The GTAW qualification also covers SMAW because both are arc processes
  4. The welder may weld SMAW for one month while qualification is arranged

Explanation

Performance qualification is specific to the process tested and to the essential variable ranges qualified. A GTAW qualification does not extend to SMAW, so the welder must be qualified for SMAW first.

Question 42QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

What does Section IX require when there is a specific reason to question a welder's ability to make sound welds?

  1. The supporting PQR must be revised to reflect the concern
  2. Nothing, as long as the six-month continuity of the qualification is unbroken
  3. The welder may continue if the Authorized Inspector observes the work
  4. The welder must be requalified before continuing production welding Correct answer.

Explanation

Section IX requires requalification whenever there is a specific reason to question a welder's ability, independent of continuity of use. The contractor is responsible for making that judgment and acting on it.

Question 43QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

How does Section IX treat SI and U.S. customary units?

  1. Only U.S. customary units are permitted on a PQR submitted for review
  2. SI units govern whenever the two systems give different values
  3. Either system may be used, but not mixed within one document Correct answer.
  4. Each contractor must register its chosen system with ASME

Explanation

ASME treats the values stated in either system as standard separately, and each system must be used independently. Combining values from the two systems can produce nonconformance.

Question 44QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Before assigning a qualified welder to a production joint, what must the contractor confirm?

  1. That the welder has completed at least 100 in. of production weld in the past year
  2. That the qualification test was witnessed by the Authorized Inspector
  3. That the welder holds a current ASME Certificate of Authorization
  4. That the qualification covers the joint's process, position, and thickness Correct answer.

Explanation

The contractor must verify that the welder's qualified essential variable ranges cover the production joint. Welding outside those ranges requires additional qualification.

Question 45QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A contractor wants a single WPS covering a GTAW root pass and SMAW fill passes. What does Section IX require?

  1. Only the process used for the root pass needs to be qualified
  2. A separate WPS document is required for each process used in the same joint
  3. The combination is allowed only if both processes use the same F-number
  4. Each process must be qualified and recorded, but one WPS may cover both Correct answer.

Explanation

A WPS may document more than one process, but each process is qualified separately and the applicable variables for each are recorded. One process qualification does not cover another process.

Question 46QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A groove weld procedure is qualified on a 1/2 in. (13 mm) thick test coupon. Which production base metal thickness range is qualified?

  1. 1/16 in. through 1/2 in.
  2. 1/8 in. through 2 in.
  3. 1/4 in. through 1/2 in.
  4. 1/16 in. through 1 in. Correct answer.

Explanation

For a test coupon of T = 1/2 in., Section IX qualifies base metal thickness from 1/16 in. through 2T, which is 1 in. The qualified range is established by the coupon thickness recorded on the PQR.

Question 47QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

A procedure was qualified with a minimum preheat of 200°F (93°C). Which production preheat value would require requalification?

  1. 200°F (93°C), the qualified value
  2. 150°F (66°C)
  3. 90°F (32°C) Correct answer.
  4. 175°F (79°C)

Explanation

A decrease of more than 100°F below the qualified minimum preheat is an essential change requiring requalification. A value of 90°F is 110°F below the qualified 200°F.

Question 48QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

How does Section IX distinguish automatic welding from machine welding?

  1. Whether the process uses an external shielding gas
  2. Whether the filler metal is added by hand or fed from a spool
  3. Whether the equipment welds without control adjustment by the operator Correct answer.
  4. Whether the welding is done in a shop or at a field site

Explanation

Automatic welding is performed with equipment that requires no adjustment of controls by the welding operator during the operation, whereas machine welding requires constant observation and control by the operator. Both are distinct from manual and semiautomatic welding.

Question 49QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

Which edition of Section IX governs a new procedure qualification for work built to a given construction code?

  1. The edition the welder was trained to
  2. The edition in force when the contractor obtained its certificate
  3. The most recent edition published when the WPS is written
  4. The edition referenced by the construction code under which the work is built Correct answer.

Explanation

The construction code specifies the Section IX edition and addenda applicable to the work, and the contractor qualifies procedures and personnel to that edition. A later edition does not apply unless the construction code requires it.

Question 50QG – General Requirements (Section IX scope, definitions, responsibilities, procedure and performance qualification fundamentals)

In Section IX, what does the A-number of a filler metal or weld metal designate?

  1. The chemical composition of the deposited weld metal Correct answer.
  2. The base metal specification group
  3. The minimum preheat temperature required
  4. The usability characteristics of the electrode

Explanation

A-numbers group weld metal by chemical composition analysis, such as carbon-molybdenum or chromium-nickel types, and are used with the procedure qualification variables. Usability characteristics are covered by F-numbers and base metals by P-numbers.