Section 5 Qualification of Welding Procedures with Filler Metal Additions – CWI Part C

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Section 5 Qualification of Welding Procedures with Filler Metal Additions – CWI Part C Practice Test

Prepare for the AWS CWI Part C Open Book Exam with this free practice test based on API 1104 Section 5: Qualification of Welding Procedures with Filler Metal Additions. This section is one of the most important parts of API 1104 because it explains how welding procedures are qualified, recorded, tested, and accepted before they are used for production welding.

In this quiz, you can take a free practice test with the latest exam-style questions and answers for CWI Part C API 1104 Section 5.

Take Free CWI Part C API 1104 Practice Test

This free quiz is designed for AWS CWI candidates, welding inspectors, QA/QC professionals, pipeline welding personnel, and students preparing for the AWS CWI Part C exam using API 1104.

Section 5 focuses on the qualification of welding procedures using manual and semiautomatic welding with filler metal additions. It also explains welding procedure specifications, essential variables, procedure qualification records, butt weld testing, fillet weld testing, and acceptance criteria.

Quiz Details

Quiz Name: Section 5 Qualification of Welding Procedures with Filler Metal Additions – CWI Part C
Standard Covered: API 1104
Exam Type: AWS CWI Part C Practice Test
Total Questions: 11 Questions
Question Type: Multiple Choice Questions
Level: Exam Preparation Level

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What Is Covered in API 1104 Section 5?

API 1104 Section 5 covers the qualification of welding procedures with filler metal additions. This section explains the requirements for preparing and testing welding procedures before they are used in production welding.

A welding procedure must be qualified by testing to prove that welds with acceptable mechanical properties can be produced. The results of the qualification test must be recorded and maintained as long as the welding procedure specification is in use.

Main Topics Covered in Section 5

5.1 Procedure Qualification

Procedure qualification is used to prove that a welding procedure can produce acceptable welds. It includes testing of a welded coupon, documenting the test results, and identifying when requalification is required.

Section 5 applies to manual and semiautomatic welding with filler metal additions. Mechanized welding with filler metal additions and automatic welding without filler metal additions are addressed in other sections of API 1104.

5.2 Record

The company must record the complete details of each procedure qualification. This record includes important welding variables such as pipe grade, wall thickness, welding process, filler metal, electrical characteristics, position, direction of welding, preheat, shielding gas, and test results.

API 1104 provides sample forms that may be used to document the welding procedure specification and coupon test results.

5.3 Welding Procedure Specification

The welding procedure specification provides the required welding variables for a specific application. It gives meaningful instructions to the welder or welding operator so that the weld can be repeated successfully.

The procedure must include details such as:

• Welding process
• Materials
• Diameter and wall thickness range
• Joint design
• Filler metal and flux
• Electrical characteristics
• Flame characteristics, when applicable
• Welding position
• Direction of welding
• Time between passes
• Lineup clamp details
• Cleaning and grinding
• Preheat and postweld heat treatment
• Shielding gas and flow rate
• Shielding flux
• Speed of travel
• Method of cooling after welding

5.4 Essential Variables

Essential variables are changes that require requalification of the welding procedure. API 1104 identifies which variables are essential and what changes require new testing.

Important essential variables include:

• Change in welding process
• Change in base material group or SMYS
• Major change in joint design
• Change from roll welding to fixed position, or from fixed position to roll welding
• Change from one wall thickness range to another
• Change from one filler metal group number to another
• Change in current type or polarity
• Increase in time between root bead and hot pass
• Change in the direction of welding
• Change in nominal shielding gas composition
• Flow rate change greater than 20 percent of the nominal value
• Change in the speed of travel range
• Decrease in minimum preheat temperature
• Addition or change in PWHT requirements

Variables listed in the welding procedure specification but not listed as essential variables may be revised without requalification, provided the welding procedure specification is updated.

Materials and SMYS Grouping

API 1104 groups materials by specified minimum yield strength, also called SMYS. A welding procedure may qualify lower-strength materials within the same applicable group when the procedure is qualified on the highest SMYS material in that group.

The SMYS groupings include:

• SMYS of 42,000 psi or less
• SMYS greater than 42,000 psi but less than 65,000 psi
• SMYS of 65,000 psi or greater, where each pipe grade requires separate qualification

This is an important exam topic because CWI Part C questions often test whether a procedure is qualified for a different pipe grade.

Filler Metals and API 1104 Group Numbers

API 1104 uses filler metal group numbers, which are different from AWS F-Numbers. This is a common area where candidates make mistakes.

A change from one API 1104 filler metal group number to another is an essential variable. For some filler metals, changes in suffix designator, manufacturer, trade name, or electrode classification may also require requalification.

Candidates should carefully understand Table 1 and its footnotes because they may modify filler metal, electrode, flux, and classification requirements.

Electrical Characteristics

The welding procedure specification must identify the type of current, such as AC or DC. When DC is used, the polarity must also be specified as electrode positive or electrode negative.

A change in current type or polarity is an essential variable. However, changes in voltage and current ranges are not essential variables, although the welder must still weld within the ranges listed in the welding procedure specification.

Direction of Welding and Time Between Passes

The welding procedure must state whether welding is performed uphill or downhill. A change in welding direction is an essential variable.

The procedure must also specify the maximum time between completion of the root bead and start of the hot pass. An increase in this time is an essential variable because it can affect weld quality and interpass temperature control.

Preheat and Postweld Heat Treatment

The welding procedure must specify preheat requirements, including the minimum temperature, when preheat is required, and the method used.

A decrease in minimum preheat temperature is an essential variable. The addition of postweld heat treatment, or a change in PWHT time, temperature, or technique range, is also an essential variable.

Shielding Gas and Flow Rate

For welding processes using shielding gas, the welding procedure must specify the gas composition and the flow rate range.

A change in nominal shielding gas composition is an essential variable. A change in flow rate greater than 20 percent of the nominal value is also an essential variable.

Butt Weld Procedure Qualification

To qualify a procedure for butt welds, a butt weld test joint is made by joining two pieces of pipe. A butt weld procedure only qualifies the procedure for butt welds. Fillet welds or branch connection welds require separate qualification.

API 1104 gives requirements for removing test specimens from the welded test joint. The number and type of specimens depend on pipe diameter, wall thickness, and SMYS.

Common test specimens include:

• Tensile strength specimens
• Nick breaks specimens
• Root bend specimens
• Face bend specimens
• Side bend specimens

Tensile Strength Test

Tension specimens are used to determine whether the weld meets the required tensile strength. The tensile strength of the weld must be no less than that specified for the base metal.

If the specimen fails in the pipe material and produces a tensile strength not less than 95 percent of the specified tensile strength of the pipe material, the test is acceptable.

Nick Break Test

Nick break specimens are used to expose the weld metal and evaluate internal soundness. The exposed weld metal surfaces must show complete fusion and penetration.

Acceptance criteria include limits for pore size, total pore area, slag inclusion depth, slag inclusion length, and separation between adjacent slag inclusions.

Bend Testing

Root bend, face bend, and side bend tests are used to evaluate weld soundness and ductility.

For heavier wall pipe, side bend specimens are required instead of face and root bend specimens when the wall thickness is greater than 0.500 inch. This is because a thicker pipe is more suitable for side bend testing.

Fillet Weld Procedure Qualification

API 1104 also covers the qualification of fillet weld procedures. Fillet weld procedures may be qualified using a branch connection weld or a socket weld configuration.

Qualification requires four nick break specimens removed from the welded coupon at 90-degree intervals. The acceptance criteria are the same as those used for nick break specimens in butt weld procedure qualification.

What You Will Learn in This Quiz

This practice test will help you understand:

• Welding Procedure Qualification Requirements
• Welding Procedure Specification Requirements
• Procedure qualification records and coupon test reports
• Essential variables in API 1104
• SMYS material grouping rules
• Filler metal group numbers
• Current type and polarity requirements
• Direction of welding requirements
• Time between root bead and hot pass
• Preheat and PWHT requirements
• Shielding gas and flow rate rules
• Butt weld test specimen requirements
• Tensile, nick break, root bend, face bend, and side bend testing
• Fillet weld procedure qualification and acceptance criteria

Why Practice Section 5 Qualification of Welding Procedures?

Section 5 is highly important for the AWS CWI Part C exam because it contains many code-based requirements, tables, figures, variables, and acceptance criteria. Questions from this section can test both memory and code navigation skills.

By practicing Section 5 questions, candidates can improve their understanding of welding procedure qualification and become faster at locating key API 1104 requirements during the open-book exam.

Start the Free Practice Test

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Quiz – Section 5 Qualification of Welding Procedures with Filler Metal Additions – CWI Part C – 11 Questions
https://upweld.org/section-5-qualification-of-welding-procedures-with-filler-metal-additions/

Who Should Take This Practice Test?

This quiz is useful for:

• AWS CWI exam candidates
• CWI Part C API 1104 students
• Welding inspectors
• QA/QC inspectors
• Pipeline welding professionals
• Welding supervisors
• Welding engineers
• NDT technicians
• Students preparing for open-book code exams

Prepare Better for AWS CWI Part C

If you are preparing for the AWS CWI Part C exam, Section 5 is one of the most important sections to practice. It includes procedure qualification, essential variables, testing requirements, and acceptance standards that every CWI candidate should understand.

Take the free practice test now and improve your preparation for the AWS CWI Part C API 1104 exam.

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