Measure of Sensitivity on Elliptical Joints of 2"NB pipes or any other Elliptical Radiography Shots.

[Ramchandra vichare]

MOST URGENT PL.

Dear All Experts/Experienced Personal in Process Piping in Refinery/Radiography /NDT Leverl III (RT),

Dear Friends,

As all related experince personal are know about Elliptacl Radiography shorts; my question is ; while measureing sensitivity with Wire type penetrameter whether it must be cross top & bottom image of Elliptical coverage area of weld or only top portion of weld. As per my Field experience I suggested for to cover full Elliptical coverage of weld but one of my vendor is refusing to do this same. In section 5 Artical 2 page 13 Clause(d) confirming IQI Placement for weld- Wire IQI , the IQI(s) shall be place on the weld so that the length of the ire is perpenticular to the length of the weld. I sincerely requested to all experts pl be gauide per return mail.

Mater most urgent & interesting in Radiography technology

With Best Regards,

RK Vichare

[Sudharsan Sathianathan]

Mr.R.KVichare,

Your thought is correct.IQI must to place on the wel,Perpendicular to the weld.

SSuharsan.

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SSudharsan
QA/QC Manager

Punjlloyd Oil & Gas Sdn Bhd
Malaysia
+60-105162524

[Ramchandra vichare]

Thanks , but my question is as per attache sketch ; pl advise.
Regards,

RK Vichare



Regards,

RK Vichare





----- Original Message -----



From: Sudharsan Sathianathan



To: material...@googlegroups.com



Sent: Fri, 9 Sep 2011 14:53:58 +0530 (IST)



Subject: Re: [MW:12391] Measure of Sensitivity on Elliptical Joints of 2"NB pipes or any other Elliptical Radiography Shots.

[techno mirza]

Dear Mr. RK Vichare,

 

Direct Answer: Preferable wire must cross top & bottom image but, If wires are crossing top image only and meeting the required sensitivity (required wires are appeared) than it should not be rejected (at least not just because of wires are not crossing the bottom image) Provided the gap between two images is less then or equal to 1.5” inch.

Justification to the above mention: Why only top image is very important and not the bottom image? Because, in elliptical technique Penetrameter should placed on source side and if the top image is meeting the required sensitivity, means the bottom is meeting the required sensitivity for sour because, the distance variation between two images are approximately 2’” inch (I do not know what size in your case)

 

Regards.

Mirza.

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[Sudharsan Sathianathan]

Mr.Rk,

According to your attachment RIGHT SIDE SKETCH is correct .

Refer the following picture.

[Ramchandra vichare]

Very very thanks my Dear sir,
I also suggested the same but unfortunitly they wants documentry evidence of ASME Sec-V Artical-II..As far as Sensivity and geomentrical unsharpness i explain them but eventhouh they are not  agreed unless confirm by
ASMT Section V.  Sincerly request what to do for the same n how it is possible to get documentry evidence; if possible pl forward mail ID of ASMR Committee.

Wirthbest regards,

RK Vichare

----- Original Message -----

From: Sudharsan Sathianathan

To: material...@googlegroups.com

Sent: Sat, 10 Sep 2011 17:13:03 +0530 (IST)

Subject: Re: [MW:12412] Measure of Sensitivity on Elliptical Joints of 2"NB pipes or any other Elliptical Radiography Shots.

[Ramchandra vichare]

Thanks my dear sir,

The size of joint is 2"NB Pipe scheduled 40.

Regards,
RK Vichare


---- Original Message -----

From: techno mirza

To: material...@googlegroups.com

Sent: Sat, 10 Sep 2011 12:09:36 +0530 (IST)

Subject: Re: [MW:12402] Measure of Sensitivity on Elliptical Joints of 2"NB pipes or any other Elliptical Radiography Shots.

To unsubscribe from this group, send email to materials-weld...@googlegroups.com

[Ramchandra vichare]

Dear Experts ;

I am again with you even though getting Good feedback from you, because I have received different answare from different persons for which are not sufficient to clrify my question about Measurement of Sensitivity of Elliptial joints because of different persons are giving different type of answare so, I am attaching herewith some sketchs & ASME Sec-V  Aerical-2 & related Documents  for your reference.


Sincerely requested togo through attachments and advised by spending your valuable time for my help.

With best regards,
RK Vichare

Direct Answer: Preferable wire must cross top & bottom image but, If wires are crossing top image only and meeting the required sensitivity (required wires are appeared) than it should not be rejected (at least not just because of wires are not crossing the bottom image) Provided the gap between two images is less then or equal to 1.5” inch.























Justification to the above mention: Why only top image is very important and not the bottom image?















Because, in elliptical technique Penetrameter should placed on source side and if the top image is meeting the required sensitivity, means the bottom is meeting the required sensitivity for sour because, the distance variation between two images are approximately 2’” inch (I do not know what size in your case)















































Regards.























Mirza.







































































































From: Ramchandra vichare

To: material...@googlegroups.com







Cc: n...@lntecc.com







Sent: Friday, September 9, 2011 8:55 AM







Subject: [MW:12387] Measure of Sensitivity on Elliptical Joints of 2"NB pipes or any other Elliptical Radiography Shots.















  MOST URGENT PL.























Dear All Experts/Experienced Personal in Process Piping in















Refinery/Radiography /NDT Leverl III (RT),















Dear Friends,















As all related experince personal are know about  Elliptacl Radiography shorts; my question is ; while measureing sensitivity with Wire type penetrameter whether it must be cross top & bottom image of Elliptical coverage area of weld or only top portion of weld.  As per my Field experience I suggested for to cover full Elliptical coverage of weld but one of my vendor is refusing to do this same. In section 5 Artical 2 page 13 Clause(d) confirming IQI Placement for weld- Wire IQI , the IQI(s) shall be place on the weld so that the length of the ire is perpenticular to the length of the weld. I sincerely requested to all experts pl be gauide per return mail.















Mater most urgent & interesting in Radiography technology















With Best Regards,















RK Vichare















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To post to this group, send email to material...@googlegroups.com

To unsubscribe from this group, send email to materials-weld...@googlegroups.com

For more options, visit this group's bolg at http://materials-welding.blogspot.com/







The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

--























To post to this group, send email to material...@googlegroups.com

To unsubscribe from this group, send email to materials-weld...@googlegroups.com

[Jean Staton]

My way of thinking that on a DWE/DWV we are seeing top AND bottom of weld on each film, so wouldn’t we have to judge the sensitivity of each area . so I would place the wire pentrameter across the weld which when you perform an elliptical shot would result in the wires crossing both images of the weld on each film.  Unless you have a unusual large donut on the film, the wires would show on both sides.  If the donut image is enlarge so much that the wires don’t show then sensitivity is not there; aren’t we looking at both the top and bottom portion of the weld? We are supposed to use a source side pen Unless we are unable to due to configuration.

 

 

 

Have a Safe and Wonderful Day,

 

Jean Staton

 

Jean Staton

Off.: 409-835-2600

Cell: 409-553-9460

RSO/Quality, Safety, & Environ. Mgr.

Metco - Beaumont

27 Sawyer St.

Beaumont, Texas 77702

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