Podcast
Questions and Answers
What is the maximum length of linear indications that are evaluated as relevant in a continuous 12 in. length of weld?
What is the maximum length of linear indications that are evaluated as relevant in a continuous 12 in. length of weld?
- 1 in. (25 mm) (correct)
- 1/2 in. (12.5 mm)
- 2 in. (50 mm)
- 3/4 in. (18.75 mm)
How should indications with a maximum dimension of 1/16 in. (2 mm) or less be classified in liquid penetrant testing?
How should indications with a maximum dimension of 1/16 in. (2 mm) or less be classified in liquid penetrant testing?
- Relevant
- Critical
- Nonrelevant (correct)
- Acceptable
What should be done if doubt exists about the type of imperfection being disclosed by an indication?
What should be done if doubt exists about the type of imperfection being disclosed by an indication?
- Immediate rejection of the weld
- Verification using other NDT methods (correct)
- Reporting to the company without further action
- Ignoring the indication
How are indications produced by liquid penetrant testing classified if their maximum dimension is larger than 1/16 in. (2 mm) and believed to be nonrelevant?
How are indications produced by liquid penetrant testing classified if their maximum dimension is larger than 1/16 in. (2 mm) and believed to be nonrelevant?
What is the minimum width for transverse macrosection test specimens for hardness tests?
What is the minimum width for transverse macrosection test specimens for hardness tests?
Which etchant can be used to give a clear definition of the weld structure?
Which etchant can be used to give a clear definition of the weld structure?
What type of lighting is recommended for visually examining macrosections?
What type of lighting is recommended for visually examining macrosections?
What type of indenter and load should be used for hardness testing?
What type of indenter and load should be used for hardness testing?
Where should HAZ hardness impressions be located?
Where should HAZ hardness impressions be located?
When is Charpy impact testing required?
When is Charpy impact testing required?
How many valid specimen tests are required for each test of weld metal or HAZ for Charpy impact testing?
How many valid specimen tests are required for each test of weld metal or HAZ for Charpy impact testing?
What should be the orientation of the notch for Charpy impact testing?
What should be the orientation of the notch for Charpy impact testing?
What is the minimum design temperature for Charpy impact testing?
What is the minimum design temperature for Charpy impact testing?
What is the purpose of the notch in Charpy impact testing?
What is the purpose of the notch in Charpy impact testing?
What must be determined through chemical analysis when hardness testing is required?
What must be determined through chemical analysis when hardness testing is required?
What is the maximum hardness value for repair welds?
What is the maximum hardness value for repair welds?
What type of testing is required for weld imperfections?
What type of testing is required for weld imperfections?
In what circumstances are mechanical measurements governing?
In what circumstances are mechanical measurements governing?
When are company authorization required for weld repairs?
When are company authorization required for weld repairs?
In what circumstances can shallow crater cracks or star cracks in weld reinforcement be repaired by grinding?
In what circumstances can shallow crater cracks or star cracks in weld reinforcement be repaired by grinding?
When can defects other than cracks be repaired?
When can defects other than cracks be repaired?
What type of repairs may be used to remove defects in the reinforcement of root beads and cover passes?
What type of repairs may be used to remove defects in the reinforcement of root beads and cover passes?
When do back weld repairs require a qualified repair procedure?
When do back weld repairs require a qualified repair procedure?
In what circumstances does double repair of welds require prior company authorization?
In what circumstances does double repair of welds require prior company authorization?
What governs the length of repair areas within a completed weld for a partial thickness or full thickness repair?
What governs the length of repair areas within a completed weld for a partial thickness or full thickness repair?
For small diameter pipes, when do all repairs require company authorization?
For small diameter pipes, when do all repairs require company authorization?
What is the minimum deposited repair weld length?
What is the minimum deposited repair weld length?
When must a repair procedure be reestablished and requalified?
When must a repair procedure be reestablished and requalified?
What type of testing may be required for partial thickness and full thickness repair procedures?
What type of testing may be required for partial thickness and full thickness repair procedures?
What is the minimum length of the test weld for qualifying repair procedures?
What is the minimum length of the test weld for qualifying repair procedures?
Which type of repair procedures include full thickness, internal and external partial thickness, cover pass, and back weld repair?
Which type of repair procedures include full thickness, internal and external partial thickness, cover pass, and back weld repair?
What type of testing is used for weld reinforcement on tensile test specimens?
What type of testing is used for weld reinforcement on tensile test specimens?
What are the changes that require requalification of a repair procedure?
What are the changes that require requalification of a repair procedure?
What type of testing is used for testing of repair welds?
What type of testing is used for testing of repair welds?
What is the qualification length for each repair type?
What is the qualification length for each repair type?
What type of testing is used for defect exploration and removal?
What type of testing is used for defect exploration and removal?
What is the minimum length of the repair weld for qualification?
What is the minimum length of the repair weld for qualification?
When is NDT (Non-Destructive Testing) required for repair procedures?
When is NDT (Non-Destructive Testing) required for repair procedures?
What are linear indications in weld inspection?
What are linear indications in weld inspection?
When are crater cracks or star cracks considered defects in weld inspection?
When are crater cracks or star cracks considered defects in weld inspection?
How are linear indications evaluated as defects in weld inspection?
How are linear indications evaluated as defects in weld inspection?
What happens to base material imperfections detected by liquid penetrant testing in weld inspection?
What happens to base material imperfections detected by liquid penetrant testing in weld inspection?
How are indications produced by ultrasonic testing treated in weld inspection?
How are indications produced by ultrasonic testing treated in weld inspection?
How are acceptance standards for different types of indications specified in weld inspection?
How are acceptance standards for different types of indications specified in weld inspection?
What is considered a defect in weld inspection?
What is considered a defect in weld inspection?
How are linear, transverse, and volumetric indications defined and categorized in weld inspection?
How are linear, transverse, and volumetric indications defined and categorized in weld inspection?
What is the criterion for considering linear indications as defects in weld inspection?
What is the criterion for considering linear indications as defects in weld inspection?
How are nonrelevant indications of the same type treated in weld inspection?
How are nonrelevant indications of the same type treated in weld inspection?
What happens to relevant indications caused by imperfections in weld inspection?
What happens to relevant indications caused by imperfections in weld inspection?
Flashcards are hidden until you start studying
Study Notes
Weld Inspection Standards and Procedures
- Nonrelevant indications of the same type do not need to be reexamined after one is determined to be nonrelevant
- Relevant indications caused by imperfections are considered defects under certain conditions
- Linear indications are those with a length more than three times the width, rounded indications have a length three times the width or less
- Crater cracks or star cracks exceeding 5/32 in. (4 mm) in length are considered defects
- Linear indications evaluated as cracks other than crater cracks or star cracks are considered defects
- Linear indications evaluated as IF and exceed 1 in. (25 mm) in total length in a continuous 12 in. (300 mm) length of weld or 8% of the weld length are considered defects
- Base material imperfections detected by liquid penetrant testing are reported to the company for disposition
- Indications produced by ultrasonic testing may not necessarily be defects, as they can be caused by various imperfections
- Linear, transverse, and volumetric indications are defined and categorized based on their characteristics and dimensions
- Acceptance standards for different types of indications, including cracks, surface, buried, and volumetric indications, are specified
- Maximum dimensions are defined for different types of indications to determine if they are defects
- Accumulation of relevant indications exceeding specific lengths in a given area is considered a defect
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
