Quiz – Section 11 Procedures for Nondestructive Testing (NDT)- CWI Part C- 10 Questions
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Section 11 Procedures for Nondestructive Testing NDT – 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 11: Procedures for Nondestructive Testing NDT. This section is very important because it explains the written procedure requirements and testing methods for radiographic testing, magnetic particle testing, liquid penetrant testing, and ultrasonic testing.
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 11 Procedures for Nondestructive Testing NDT.
Take Free CWI Part C API 1104 Practice Test
This free quiz is designed for AWS CWI candidates, welding inspectors, QA/QC inspectors, NDT personnel, pipeline welding professionals, and students preparing for the AWS CWI Part C exam using API 1104.
Section 11 focuses on the procedures required for nondestructive testing. It helps candidates understand how NDT procedures are written, qualified, demonstrated, accepted, and applied to production weld inspection.
Quiz Details
Quiz Name: Section 11 Procedures for Nondestructive Testing NDT – CWI Part C
Standard Covered: API 1104
Exam Type: AWS CWI Part C Practice Test
Total Questions: 10 Questions
Question Type: Multiple Choice Questions
Level: Exam Preparation Level
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What Is Covered in API 1104 Section 11?
API 1104 Section 11 covers the requirements for nondestructive testing procedures. Written procedures are required for all NDT methods used under this section.
The main NDT methods covered include:
- Radiographic Testing – RT
- Magnetic Particle Testing – MT
- Liquid Penetrant Testing – PT
- Ultrasonic Testing – UT
This section is important for CWI Part C candidates because many exam questions may test procedure requirements, personnel responsibilities, image quality, IQI placement, ultrasonic demonstration, calibration, and reporting requirements.
Written NDT Procedures
API 1104 requires written procedures for all NDT procedures. These procedures help ensure that testing is performed consistently, correctly, and in a way that produces reliable inspection results.
A written procedure may include details such as:
- Testing method
- Equipment requirements
- Technique requirements
- Calibration requirements
- Acceptance requirements
- Personnel qualification requirements
- Reporting requirements
- Demonstration and company acceptance requirements
Radiographic Test Methods
Radiographic testing requirements are covered in API 1104 Section 11.1.
Radiographic images may be produced using film or other imaging media. The image must have proper density, clarity, and contrast so that the weld can be evaluated correctly.
Images produced by systems other than film must have enough sensitivity to clearly define the required essential wire diameter of the proper image quality indicator, also known as an IQI or penetrometer.
Radiographic image quality requirements apply to images produced by both x-rays and gamma rays.
Exposure Geometry
API 1104 defines different exposure geometries for radiographic testing.
Important exposure techniques include:
- Single Wall Exposure / Single Wall Viewing – SWE/SWV
- Double Wall Exposure / Single Wall Viewing – DWE/SWV
- Double Wall Exposure / Double Wall Viewing – DWE/DWV
For SWE/SWV, the radiation passes through one wall thickness and the image shows one wall thickness.
For DWE/SWV, the radiation passes through two wall thicknesses, but only the film-side wall is evaluated.
For DWE/DWV, the radiation passes through two wall thicknesses and both walls may be viewed. This technique may be used for smaller diameter pipe when permitted.
Image Quality Indicators IQI
Image quality indicators are used to confirm radiographic sensitivity. API 1104 permits wire-type IQIs such as ASTM E747 wire type or ISO 19232-1 wire type.
The IQI wires must be radiographically similar to the pipe and weld material being examined.
The essential wire diameter is the smallest wire that must be clearly visible across the area of interest. The essential wire diameter is based on weld thickness, not just nominal wall thickness.
This means weld reinforcement on the outside and inside of the pipe weld may need to be considered when determining the required IQI wire.
IQI Placement
Wire-type IQIs are normally placed on top of the weld with the wires transverse to the weld.
The required number and placement of IQIs depends on the radiographic exposure technique used.
When IQIs cannot be placed directly across the weld because of weld reinforcement or profile, they may be placed on a separate block of similar material, commonly called a shim. The shim helps raise the IQI to the correct height relative to the weld reinforcement.
Radiographic Image Interpretation
API 1104 limits interpretation of radiographic images of production welds to Level II or Level III radiographers.
Radiographers must report defects to the company unless the company requires all imperfections to be reported.
The radiographer states whether the weld meets the requirements of API 1104 Section 9, but the company determines the final disposition of the weld.
This is a key CWI Part C exam point because the company has final authority over weld disposition.
Radiographic Identification and Film Quality
Lead letters, numbers, or markers must be placed on the weldment to identify the radiographic image relative to the weld. This helps locate defects accurately for repair or evaluation.
Unexposed film must be stored in a clean and dry place. Damaged or fogged film may become unsuitable for use.
API 1104 also gives film density requirements for developed film. When requested by the company, film or other imaging media must be processed, handled, and stored so that the images remain interpretable for at least three years after production.
Magnetic Particle Test Method
API 1104 requires a written procedure for magnetic particle testing.
The MT procedure must be:
- Written
- Qualified by demonstration
- Accepted by the company before use
- In compliance with ASTM E709
Magnetic particle testing is used to detect surface and near-surface discontinuities in ferromagnetic materials.
Liquid Penetrant Test Method
API 1104 requires a written procedure for liquid penetrant testing.
The PT procedure must be:
- Written
- Qualified by demonstration
- Accepted by the company before use
- In compliance with ASTM E165
Liquid penetrant testing is commonly used to detect surface-breaking discontinuities.
Ultrasonic Test Methods
API 1104 Section 11.4 covers ultrasonic testing requirements.
A detailed UT procedure must be developed, qualified by demonstration, and agreed upon by the contractor and company. The use of ultrasonic testing is at the option of the company.
The pipe being inspected by UT must be uncoated, and the inspector should be aware of surface conditions that may interfere with scanning.
UT Personnel Requirements
Only NDT Level III UT personnel are permitted to develop application techniques and prepare and approve UT procedures.
Level II and Level III UT personnel are permitted to:
- Calibrate equipment
- Perform tests
- Interpret test results
- Evaluate results according to acceptance criteria
This is an important point for the AWS CWI Part C exam because different responsibilities are assigned to different NDT qualification levels.
UT Procedure Demonstration
The UT procedure and equipment must be demonstrated and accepted by the company.
The demonstration report should include:
- Welds containing defects and acceptable discontinuities prepared from production material
- Radiographs of the welds with documented results
- Application of the UT procedure to the welds
- Comparison of UT results with radiographic results
- Documentation of differences in detection results
- Confirmation of the ability to locate, size, and classify indications
The UT method must be capable of locating discontinuities circumferentially, measuring length, determining depth from the OD surface, and locating the discontinuity across the weld cross-section.
UT Sensitivity and Calibration
API 1104 requires the UT process and equipment to meet minimum sensitivity requirements.
Reference blocks are used for calibration. A standard N10 notch is introduced into a sample of the pipe material to be inspected. The highest point of the DAC or TCG echo produced by this notch must not be less than 80 percent of full-screen height.
For automated UT, similar sensitivity requirements apply, with additional reference reflectors such as flat-bottomed holes and N10 notches.
Parent Material Screening
Before ultrasonic testing of a completed pipe weld begins, the parent material must be screened for reflectors that may interfere with weld inspection.
A compression wave test is performed on both sides of the weld to locate reflectors in the parent material. Once the parent material is confirmed as sound, or interfering reflectors are identified and documented, the weld may be inspected.
UT Reporting Requirements
UT technicians are required to report defects unless the company specifically requires all indications at the evaluation level and above to be reported.
The UT report must include important details such as:
- Weld number
- Datum location
- Length of the indication
- Depth from the OD surface
- Defect classification
Defect classifications may include linear, transverse, or volumetric indications.
What You Will Learn in This Quiz
This practice test will help you understand:
- Written NDT procedure requirements
- Radiographic testing procedure requirements
- Film and image quality requirements
- Exposure geometry techniques
- SWE/SWV, DWE/SWV, and DWE/DWV
- IQI types and essential wire requirements
- IQI placement rules
- Radiographic interpretation by Level II or Level III personnel
- Film storage and density requirements
- MT procedure demonstration and ASTM E709 requirements
- PT procedure demonstration and ASTM E165 requirements
- UT procedure development and company acceptance
- UT Level II and Level III personnel responsibilities
- UT demonstration and calibration requirements
- Parent material screening before UT weld inspection
- UT reporting requirements
Why Practice Section 11 Procedures for Nondestructive Testing?
Section 11 is important for AWS CWI Part C exam preparation because it explains how NDT methods must be controlled by written procedures. This section also contains many practical inspection requirements related to radiography, ultrasonic testing, procedure demonstration, personnel qualification, calibration, and reporting.
Practicing Section 11 questions will help candidates improve their code navigation speed and understand the correct NDT procedure requirements for API 1104.
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Quiz – Section 11 Procedures for Nondestructive Testing NDT – CWI Part C – 10 Questions
https://upweld.org/section-11-procedures-for-nondestructive-testing-ndt/
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
- NDT technicians
- Radiographers
- Ultrasonic testing personnel
- Pipeline welding professionals
- Welding supervisors
- Welding engineers
- 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 11 Procedures for Nondestructive Testing NDT is an important topic to practice. It helps candidates understand NDT procedure requirements, inspection techniques, image quality, IQI use, UT calibration, and reporting rules.
Take the free practice test now and improve your preparation for the AWS CWI Part C API 1104 exam.