Criterios de Aceptación de defectos AWS D1.1.docx

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CEMP-E TI 809-26 1 March 2000 6. WELD QUALITY. a. Engineer's Responsibility for Acceptance Criteria. The Engineer is given the responsibility of determining and specifying the appropriate weld quality acceptance criteria. AWS D1.1 quality criteria is a workmanship standard, based upon the quality readily achievable by a qualified welder. Non- destructive testing acceptance criteria is based upon achievable q uality and the ability of the method to detect discontinuities of given size and location, with some consi deration for the effect of surface and near-surface notches upon performance. The Engineer may use experi ence, analysis, or experimental evidence to establish alternate acceptance criteria. This criteria may be applied as the inspection criteria for the project, in lieu of AWS D1.1 criteria, or may be used to est ablish when repair or replacement of a weld is required for a given discontinuity or situation. The first approach is valuable because it reduces the time and expense of inspection, and eliminates needless repair s, reducing the risk of creating additional discontinuities while performing repairs, and reduces t he potential detrimental effects to the existing base metal. The second approach is also valuable, but doe s not reduce inspection expense. See AWS D1.1 Section C6.8.

Transcript of Criterios de Aceptación de defectos AWS D1.1.docx

Page 1: Criterios de Aceptación de defectos AWS D1.1.docx

CEMP-E

TI 809-26

1 March 2000

6. WELD QUALITY.

a. Engineer's Responsibility for Acceptance Criteria. The Engineer is given the responsibility of determining and specifying the appropriate weld quality acceptance criteria. AWS D1.1 quality criteria is

a workmanship standard, based upon the quality readily achievable by a qualified welder. Non-

destructive testing acceptance criteria is based upon achievable quality and the ability of the method to

detect discontinuities of given size and location, with some consideration for the effect of surface and

near-surface notches upon performance. The Engineer may use experience, analysis, or experimental

evidence to establish alternate acceptance criteria. This criteria may be applied as the inspection criteria

for the project, in lieu of AWS D1.1 criteria, or may be used to establish when repair or replacement of a

weld is required for a given discontinuity or situation. The first approach is valuable because it reduces

the time and expense of inspection, and eliminates needless repairs, reducing the risk of creating

additional discontinuities while performing repairs, and reduces the potential detrimental effects to the

existing base metal. The second approach is also valuable, but does not reduce inspection expense. See

AWS D1.1 Section C6.8.

b. D1.1 Visual Acceptance Criteria. The following table provides the specification reference location

for various forms of weld discontinuities:

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c. NDT Acceptance Criteria. When penetrant testing (PT), and magnetic particle testing (MT) are

specified, the acceptance criteria to be used is the same as that for visual inspection. For ultrasonic