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[MW:10596] RE: 10592] radiography of longseam by panaromic method

By Materials & Welding

Dear Asad Azmi,

 

There is no restrictions on method of radiography on Sec VIII. The ultimate is that weld  is to be radiographed when required.

 

Pls. refer T.277.2 of section V, where it states about the number of IQI’s.

for your long seam, three IQI’s with one at each end and one at approximate centre is sufficient to accept your film.

 

In addition to that Check UW 51 (a) 3 of Sec VIII, where it states

A written radiographic examination procedure is

not required. Demonstration of density and penetrameter

image requirements on production or technique radiographs

shall be considered satisfactory evidence of compliance

with Article 2 of Section V.

 

 

Hope this helps.

 

Cheers

MM

 

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of asad azmi
Sent: Monday, April 04, 2011 9:19 PM
To: materials-welding@googlegroups.com
Subject: [MW:10592] radiography of longseam by panaromic method

 

Dear All,

 

Greetings.

 

contractor has carried out radiography of the longseam of a vessel in one shot by panaromic method inspite of doing RT by sinlgle exposure method of each segment of the longseam.

 

while reveiwing RT films it was observed that few films for the longseam are not having penetrameter image on them.

 

kindly inform me whether it is acceptable to do RT of longseam by panaromic method and joint can be accepted with  few films not having penetrameter image  on them. 

 

Construction code for the vessel is ASME SEC VIII DIV 1.

 

Thanks in advance for your valuable suggestions.

 

Asad Azmi

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