What is acceptance criteria in NDT?

Indications which are identified using any NDT method is accepted or rejected in reference with the standards. The standards which client accepts or the standard which we follow for production is called as acceptance criteria.

What are the rounded and linear indications?

Linear Indication: Any indication with a length greater than three times the width. Linear indications are mainly cracks, lack of penetration, lack of fusion, and elongated slag inclusions. Rounded Indication: Any indication with a length equal to or less than three times the width.

What is the prerequisite for a penetrant test?

The PCN requirements for Penetrant Level 1 are: 16 hours training, previous to the exam, and 1 month supervised work experience, to be obtained either before the examination, or within 24 months after passing the exam.

What are the standards applicable to liquid penetrant testing?

ISO 3452-1:2013 specifies a method of penetrant testing used to detect discontinuities, e.g. cracks, laps, folds, porosity and lack of fusion, which are open to the surface of the material to be tested.

What should be in acceptance criteria?

What are a few traits of effective acceptance criteria?

• Acceptance criteria should be testable.
• Criteria should be clear and concise.
• Everyone must understand your acceptance criteria.
• Acceptance criteria should provide user perspective.

What is acceptance criteria in welding?

The criteria which sets the level of acceptable penetration depends primarily on the application code or specification. BS 2971 (Class 2 arc welding) requires that the ‘penetration bead shall not exceed 3mm for pipes up to and including 150mm bore or 6mm for pipes over 150mm bore’.

What is a rounded indication?

Rounded Indication is a common defect in weld radiographic testing. Indications with a maximum length of three times the width or less on the radiograph are defined as rounded indications. These indications may be circular, elliptical, conical, or irregular in shape.

Can eddy current detect cracks?

Eddy current allows analysts to inspect materials on a surface and near-surface level. The best eddy current instruments can detect cracks for complex inspections like tubing via multiple frequencies and dual options, and can pick up developing cracks as small as 0.1 mm or less in depth.

Which of the following penetrating liquid is used in a liquid P * * * * * * * * * * Test?

Petroleum based carrier fluid is used as penetrating liquid in liquid penetration test along with fluorescent red colour dye for visible light.

What is acceptance criteria example?

Acceptance criteria define the boundaries of a user story, and are used to confirm when a story is completed and working as intended. So for the above example, the acceptance criteria could include: Users can pay by credit card. An acknowledgment email is sent to the user after submitting the form.

What does good acceptance criteria look like?

Acceptance Criteria must be expressed clearly, in simple language the customer would use, just like the User Story, without ambiguity as to what the expected outcome is: what is acceptable and what is not acceptable. They must be testable: easily translated into one or more manual/automated test cases.

What are the acceptance criteria for liquid penetrant testing?

Liquid Penetrant Testing Acceptance Criteria Based on ASME VIII Div 1 Appendix 8 The ASME Code Section VIII Div. 1 Mandatory Appendix 8 covers the acceptance criteria for Penetrant testing on the weld. Please note API codes for rotating equipment also refer to this code.

When to use API 610 for liquid penetrant testing?

Please note API codes for rotating equipment also refer to this code. For instance, if you are performing a liquid penetrant testing on pipe weld to pump casing and you find an indication, then you need to refer to appendix  8 of the code mentioned above for evaluation since the API 610 does not directly address the acceptance criteria issue.

When to use liquid penetrant in metal inspection?

Pre-cleaning of parts is critical since contaminants can mask defects, and post-cleaning is required to remove residues. Liquid penetrant inspection can be used successfully on nonporous and fairly smooth materials such as metals, glass, plastics and fired ceramics.

Which is the best standard for dye penetrant inspection?

List of Standards for Dye Penetrant Inspection Sr. Number Title 1 ISO 3452-1 Non-destructive testing – Penetrant test 2 ISO 3452-2 Non-destructive testing – Penetrant test 3 ISO 3452-3 Non-destructive testing – Penetrant test 4 ISO 3452-4 Non-destructive testing – Penetrant test