Re: [MW:7895] Re: WQT-Visual Acceptance Criteria Issue

Dear Mr. Robert,

 

Thank you for the valuable inputs. I reviewed ASME B31.3 Chapter 5 & 6 and observed the following things

 

328.2 Welding Qualifications

328.2.1 Qualification Requirements

(a)

Qualification of thewelding procedures to be used and of the performance of welders and welding operators shall conform to the requirements of the BPV         Code,Section IX except as modified herein.

 

341.4.2 Examination — Category D Fluid Service.

Piping and piping elements for CategoryDFluid Serviceas designated in the engineering design shall be visually examined in accordance with para. 344.2 to the extent necessary to satisfy the examiner that components, materials, and workmanship conform to the requirements of this Code and the engineering design. Acceptance criteria are as stated in para. 341.3.2 and in Table 341.3.2, for Category D fluid service, unless otherwise specified.

 

 

 

Criterion Value Notes for Table 341.3.2

 

C                 Depth of lack of fusion and incomplete penetration                     ≤ 0.2T w

                          Cumulative length of lack of fusion and incomplete                         ≤ 38 mm (1.5 in.) in any 150 mm (6 in.) weld length

                          penetration [Note (7)]

 

 

                           Note (7) Tightly butted unfused root faces are unacceptable.

 

Mr. Robert, Suppose my company's scope of work comes under category 'D' fluid service. As per B31.3 Table 341.3.2, lack of fusion and penetration is acceptable up to some extend for girth and miter groove!!! But ASME SEC IX says complete fusion and penetration required during WQT (irrespective of fluid service).  Can I qualify my welders with ASME B31.3 visual acceptance criteria for category 'D' fluid service?

 

 

 

Regards,

 

 

Limesh

 

 

On Wed, Oct 27, 2010 at 9:37 PM, <robertp@westernp.com> wrote:

Sec IX is not BPV Code, it is reference book for qualification
requirements.

Refer to VT in chapt 6 of B31.3 process piping code.

On Oct 26, 9:33 pm, limesh M <limes...@gmail.com> wrote:
> *Dear All,*

> **
> *Design Code - ASME B31.3*
> *Welding Code - ASME BPV SEC IX*
> **
> *I want to qualify some welders and welding operators based on ASME BPV SEC
> IX.*
> *What is the visual acceptance criteria as per code (Suppose there is no
> client specification regarding this matter)?*
> *Please mention the relevant code clauses for reference.*
> **
> **
> **
> **
> *Regards,*
> **
> **

> *Limesh*

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