UT in lieu of RT

[Josnit]

Dear Experts,

For vessels constructed as per ASME Section VIII Div.1 is it acceptable to carry out manual UT in lieu of RT?. Reference to which clause, it should be done?.

Regards,

Josnit 

[veera raghava kommisetti]

No, only recordable UT is allowed (in other words PA or ToFD

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[CHINTUKUMAR GANDHI]

Please refer the extract of UW-11(a) (7).

Ultrasonic examination in accordance with UW-53 may be substituted for radiography for the final

closure seam of a pressure vessel if the construction of the vessel does not permit interpretable radiographs in accordance with Code requirements. The absence of suitable radiographic equipment shall not be justification for such substitution.

Thanks & regards,

C. R. GANDHI

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From: veera raghava kommisetti <kommi...@gmail.com>
To: material...@googlegroups.com
Sent: Saturday, September 7, 2013 2:09 PM
Subject: Re: [MW:18604] UT in lieu of RT

[Steven Teo]

Seek equipment owner's approval for the use of recordable UT to replace RT (at least partially) to avoid the harzradous ionizing radiation method other than odd hours RT application. International Standard ASME 2235-9 Case allowed this. PAUT/TOFD procedure and operator qualification must be approved. UT has better advantages than RT in detecting severe type defects...ie..planar shape.

What concerned owners and certifying authoirty is NDT malpractises in steelwork industries. This can also happen in RT method too.

From: CHINTUKUMAR GANDHI <cgand...@yahoo.com>
To: "material...@googlegroups.com" <material...@googlegroups.com>
Sent: Saturday, 7 September 2013, 17:52
Subject: Re: [MW:18605] UT in lieu of RT

Please refer the extract of UW-11(a) (7).

Ultrasonic examination in accordance with UW-53 may be substituted for radiography for the final

closure seam of a pressure vessel if the construction of the vessel does not permit interpretable radiographs in accordance with Code requirements. The absence of suitable radiographic equipment shall not be justification for such substitution.

Thanks & regards,

C. R. GANDHI

From: veera raghava kommisetti <kommi...@gmail.com>
To: material...@googlegroups.com
Sent: Saturday, September 7, 2013 2:09 PM
Subject: Re: [MW:18604] UT in lieu of RT

No, only recordable UT is allowed (in other words PA or ToFD

On Sat, Sep 7, 2013 at 9:18 AM, Josnit <nithind...@gmail.com> wrote:

Dear Experts,

For vessels constructed as per ASME Section VIII Div.1 is it acceptable to carry out manual UT in lieu of RT?. Reference to which clause, it should be done?.

Regards,

Josnit 

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[sathishkumar R]

Hi Josit..! Good day..!!

As an alternative to the RT, the weld metal thickness > 13 mm (above ) may be Ultrasonically examined as per the requirements of 7.5.5 of ASME VIII Div 2 

Ref : VIII Div 1, UW51 (a) (4)

ASME VIII Div 2 - 7.5.5 : Written procedure required as per Section V, Article 4, Mandatory Appendix VIII ( which covers only automated or semi automated scanning )

Conclusion: Manual UT not allowed. Try TOFD, if t>13mm

For Info: ASME 2235-9 case has been removed and incorporated in the code book itself.

Hope it helps you..!!

[prem nautiyal]

Hi 

As per ASME Section VIII Div.1, 2013 edition,

UW-51(a)(4), the Minimum plate thickness for UT examination has been lowered from (1/2 inch) 13mm to 6mm (1/4 inch).

Now a manufacturer may perform UT in lieu of RT for all welds in material 6mm and greater in thickness using current UT technology such as Linear Phased Array Ultrasonic Testing.

Regards

Prem Nautiyal

9769316004

¨

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From: sathishkumar R <sathi...@gmail.com>
To: material...@googlegroups.com
Sent: Sunday, September 8, 2013 2:04 PM
Subject: [MW:18614] Re: UT in lieu of RT

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[george....@gr.bureauveritas.com]

Only for the final seem and when not possible to have access to place the film.
On a top of that a Code Case is applicable

best regards

Dr. Georgios Dilintas

Authorized Nuclear Inspector
Authorized Inspector Supervisor
API 510 Inspector
Prelude FLNG ASME Subject Matter Expert

I&F REGIONAL TECHNICAL MANAGER
BUREAU VERITAS HELLAS

Tel: +30 210 40 63 113/4
Fax: +30 210 40 63 118
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Josnit ---07/09/2013 11:05:54---Dear Experts, For vessels constructed as per ASME Section VIII Div.1 is it acceptable to

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[Sathishkumar R]

Dear sir, 

  In my opinion, VIII Div 1 or Code case 2235 - 10, not mentioned about final seam. If you provide any reference, that could help me lot.

 As per my understanding, it applicable for ALL WELDS ( t = 6 mm and above as per 2013 Edition ).  Please correct me, if I am wrong

VIII Div 1 :

Code case 2235 - 10 :

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Thanks & Regards

 

 

SATHISHKUMAR R Third Party Inspector - Trainee(Mechanical / Welding), Velosi Qatar  E | sathi...@gmail.com   Mob| +974 6615 2072   T| +974-4435.2850    EXT| 107   F| +974-4435.2819   W| www.velosi.com A| Office Nos. 1,18 & 20 Eli France Cafè Building, Ramada Junction, Salwa Road, P.O. Box 3408, Doha, Qatar

[pgoswami]

Hi Satish,

 

Please see the code case along with discussion blogs on the same issue. The emphasis is on digital UT and state of art UT like TOFD  and Phased Array.

 

Thanks. 

 

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgos...@quickclic.net

pgos...@sympatico.ca

 

http://www.onetb.com/forum/ut-in-lieu-of-rt-sec-viii-div-1-t3025.html

 

http://www.vsonomatic.com/publications/experience_with_code_cases.pdf

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From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Sathishkumar R
Sent: Monday, September 09, 2013 11:09 AM
To: material...@googlegroups.com
Subject: Re: [MW:18619] UT in lieu of RT