where expertise comes together - since 1996

Web's Largest Portal of Nondestructive Testing (NDT)
Open Access Database (Conference Proceedings, Articles, News), Exhibition, Forum, Network

All Forum Boards
Technical Discussions >
Radiography interpratation Technique-IQI selection
Career Discussions
Job Offers
Job Seeks
Classified Ads
About NDT.net
Articles & News

649 views
05:00 Sep-20-2008
tuan adnan
Radiography interpratation Technique-IQI selection

hello guys...
i have some confusion.
1- when interprect elips film.. in order to calculate the sensitivity do we used single wall or 2t .. and is the thicness based on parent material or added with capping ..for example t =4 mm and capping 1.5 as percode... what is the requirement for IQI used.. will it be group A or group B for elips film

2- also on DWSI... for sensity calculation do we used single t or 2t... in order to make or used IQI selection.. please advise.. thank you in advance.


 
05:55 Sep-20-2008

Collin Maloney

NDT Inspector, - Plant Inspector
Applus RTD,
Australia,
Joined Nov 2000
147
Re: Radiography interpratation Technique-IQI selection ----------- Start Original Message -----------
: hello guys...
: i have some confusion.
: 1- when interprect elips film.. in order to calculate the sensitivity do we used single wall or 2t .. and is the thicness based on parent material or added with capping ..for example t =4 mm and capping 1.5 as percode... what is the requirement for IQI used.. will it be group A or group B for elips film
: 2- also on DWSI... for sensity calculation do we used single t or 2t... in order to make or used IQI selection.. please advise.. thank you in advance.
------------ End Original Message ------------

Hi

Sensitivity is calculated on single wall thickness including weld cap against thinest wire visible in the weld. Subtract 1 wire if IQI positioned on film side.
Selection of IQI for DWSI is "t".


 
06:13 Sep-20-2008

Juan Amado

Engineering, Inspection
Arco Industrial, S.A.,
Panama,
Joined Nov 2001
44
Re: Radiography interpratation Technique-IQI selection When using this technique (Double Side Double Exposure) it is important to remeber that even though youare looking at the front and back welds in a single film, you are evaluating the quality of a single thickness weld, and hence the required sensitivity level for the radiograph must be set according to that. This also means that in your Ug calculation you shall take into account the total diameter of the pipe, so that both sides of the weld (i.e. the one near the film and the one far away) will meet the Ug requirement.

----------- Start Original Message -----------
: : hello guys...
: : i have some confusion.
: : 1- when interprect elips film.. in order to calculate the sensitivity do we used single wall or 2t .. and is the thicness based on parent material or added with capping ..for example t =4 mm and capping 1.5 as percode... what is the requirement for IQI used.. will it be group A or group B for elips film
: : 2- also on DWSI... for sensity calculation do we used single t or 2t... in order to make or used IQI selection.. please advise.. thank you in advance.
: Hi
: Sensitivity is calculated on single wall thickness including weld cap against thinest wire visible in the weld. Subtract 1 wire if IQI positioned on film side.
: Selection of IQI for DWSI is "t".
------------ End Original Message ------------




 


© NDT.net - The Web's Largest Portal of Nondestructive Testing (NDT) ISSN 1435-4934

Open Access Database, |Conference Proceedings| |Articles| |News| |Exhibition| |Forum| |Professional Network|