Re: [MW:29583] Geometric Unsharpness and discountinuity size related to RT

There is no specific reference. The Ug is a criterion for accepting RTs and not for accepting of defects. This is self explanatory and thus there is no need for specific Code paragraph 

Στις Πέμ, 9 Μαΐ 2019, 05:40 ο χρήστης Hareesh K V <hareesh13h@gmail.com> έγραψε:

Please give the code reference/clause.

On Wed, May 8, 2019, 6:22 PM George Dilintas <dilintas@gmail.com> wrote:

according to the Code you cannot

Στις Δευ, 22 Απρ 2019 στις 5:28 π.μ., ο/η Hareesh K V <hareesh13h@gmail.com> έγραψε:

Dear Group Members,

Related to : Radiography Examination 

Can we add the value of geometric unsharpness to the discountinuity size acceptability value for accepting a discontinuity. 

Governing codes: 

ASME BPVC Sec V & ASME B 31.3

Example. 

Say Up to 2mm porosity is acceptable as per the code.

We have established the geometric unsharpness value by procedure qualification of the technique and observed as 0.2

My question is, can we accept a porosity of 2.4mm by adding (0.2x 2times Ug for both the sides of the discountiuity) the geometric unsharpness to the acceptability value of 2mm.

Please advise with code references or code interpretations. 

Regards, 

Hareesh K V

8547859202

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Dr. Georgios Dilintas,

Dipl. Ing. In Aeronautic and Space Engineering

Ph.D in Mechanics of Solids - Computational Mechanics

A.I.S, A.N.I, IRCA Lead Auditor

Welding, Stress Analysis, Corrosion, QA/QC, Failure Analysis, Risk Analysis

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