GB/T 5616-2014Non-destructive testing—Guidelines for application (English PDF)

3.1 Assignment

It refers to the written documents by which the employer or the responsible unit requires the unit to conduct and apply the non-destructive testing of an item.

3.2 Contract

It refers to the written documents by which the Employer (the entrusting unit) requires the Contractor (responsible unit) to conduct and apply the [ISO 9712:2012, definition 3.16]

5.1

Non-destructive testing contains a number of methods that have been used effectively. In accordance with the physical principle or the difference of testing object and purpose, the non-destructive testing can be divided into the following methods.

a) Penetrant testing (penetrant testing, PT);

b) Magnetic testing (MT);

c) Visual testing (visual testing, VT);

d) Ultrasonic testing (ultrasonic testing, UT);

e) Eddy current testing (eddy current testing, ET);

f) Radiographic testing (radiographic testing, RT);

g) Leak testing (leak testing, LT);

h) Infrared thermographic testing (TT or IT);

i) Acoustic emission testing (AT or AE).

Note: Any kind of physical principles are likely to be developed and used as non-destructive testing methods, so it shall not rule out other non-destructive testing methods.

manufacturer's exit-factory (or batch) testing shall be qualified and guaranteed by the quality system, which shall comply with the requirements of GB/T 19001.

7.3.2 Equipment performance and verification

7.3.2.1 Equipment performance

The working performance of non-destructive testing equipment (including instruments and materials) shall comply with the requirements of the corresponding non-destructive testing standards.

In order to ensure that the working performance of the NDT equipment reaches the requirements of the non-destructive testing application standard, it shall follow the requirements of relevant standards OR the user instruction as recommended by the manufacturer to organize the periodic performance verification (or performance testing). If necessary, it may entrust the third party as recognized by all the parts of the contract to perform the performance test, BUT the non-destructive testing personnel level of the third party shall be not less than the level of the non-destructive testing personnel of the corresponding methods of the entrusting party.

Note: When the performance verification (or performance testing) of the NDT equipment is not equivalent to that as metered and calibrated, this standard does not cover the metering issue.

7.3.2.2 System performance testing

The working performance of the NDT system shall be tested on the basis of the method recommended by the corresponding non-destructive testing application standards at least before every day or every time of testing.

7.4.3 Standards or codes

If there is no currently effective and applicable non-destructive testing standard or code, it may determine OR temporarily establish the specific technical documents as recognized by both parties of the contract through negotiation, in order to be used when there is no standard.

Note: The name and form of the specific technical document are not limited, which may be technical agreement or technical plan or part of it or other effective form.

It shall pay attention to selecting the latest version of the on-destructive testing standards. Therefore, non-destructive testing personnel and their units shall keep abreast of the establishment, revision, and update of the relevant non-destructive testing standards.

Appendix A provides a list of commonly used non-destructive testing standards for reference.

7.4.4 Non-destructive testing procedures

7.4.4.1 Non-destructive testing procedures shall be prepared by level 3 personnel. Non-destructive testing procedures shall be prepared in accordance with the NDT contract or NDT... […]