Mr Shashank, Thank you. By UT we confirmed that the indication is coming from the 1st weld pass just after back grinding and re-welding. The indication is similar to a wagon track type. But in my opinion it is interpass LF. Any comments? For me its looks like slag inclusion at start and stopover location due to lack of cleaning. Another issue with developed Kodak M100 film, is it usual for the fim to turn to more to a brownish tinge instead of blackish? The bath is new. We have noted, Agfa D series films give a blackish film after developing. If I am right Kodak M100 is equvivalent to D2 in Agfa. You are right kodak is giving brownish. One more issue in 6GR WQT there always comes a sharp line due to 25 mm edge in the RT film. This might mask discontinuity (e.g. LF) on the fusion line at that side. To avoid this shortcoming, what is the solution? Composite film tech is better solution D4 & D7. Thank you & Regards, S.Senthilkumar
--- On Sat, 17/4/10, Shashank Vagal <nach_sam@yahoo.com> wrote:
From: Shashank Vagal <nach_sam@yahoo.com>
Subject: Re: [MW:4842] Radiographic film interpretation
To: materials-welding@googlegroups.com
Date: Saturday, 17 April, 2010, 4:21 PM
| Hi Senthil, Good to hear from you. Process: SMAW, structural tubular butt weld made to AWS D1.1. On further scrutiny the following was observed, let us take this as a more representative data: | Density Location | Overlapping films | Single film | | Weld | 2.6 | 3.24 | | PM | 2.96 | 3.61 | | Indication | 2.79 | 3.38 | | IQI | 2.90 | 3.15 | By UT we confirmed that the indication is coming from the 1st weld pass just after back grinding and re-welding. The indication is similar to a wagon track type. But in my opinion it is interpass LF. Any comments? Another issue with developed Kodak M100 film, is it usual for the fim to turn to more to a brownish tinge instead of blackish? The bath is new. We have noted, Agfa D series films give a blackish film after developing. One more issue in 6GR WQT there always comes a sharp line due to 25 mm edge in the RT film. This might mask discontinuity (e.g. LF) on the fusion line at that side. To avoid this shortcoming, what is the solution? Please advise. Rgds, Shashank
--- On Sat, 17/4/10, SENTHILKUMAR SWAMINATHAN <skumarswami@yahoo.co.in> wrote:
From: SENTHILKUMAR SWAMINATHAN <skumarswami@yahoo.co.in>
Subject: Re: [MW:4840] Radiographic film interpretation
To: materials-welding@googlegroups.com
Date: Saturday, 17 April, 2010, 12:36 PM
| Mr. Shashank, Can you give more details like what is the welding process, Pipe or Plate joint. In flow lines I use to see these type of indication in crude oil pipelines especially in 4" & 6". As per API 1104 I will reject due to size you mentioned. Regards, S.Senthilkumar
--- On Thu, 15/4/10, Shashank Vagal <nach_sam@yahoo.com> wrote:
From: Shashank Vagal <nach_sam@yahoo.com>
Subject: [MW:4850] Radiographic film interpretation
To: materials-welding@googlegroups.com
Date: Thursday, 15 April, 2010, 8:16 PM
| Hi all, In one RT film we have a 10-12 mm spot with density 3.13. The weld density is 3.17 and the parent metal density is 3.3. It is apparently interpass LoF in the 2nd fill pass after hot pass (confirmed by UT, where the indication ht is approx 20%of DAC). Is there any or what is the criteria for acceptance/rejection based on density difference? Rgds, Shashank Vagal | -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@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.
| Send free SMS to your Friends on Mobile from your Yahoo! Messenger. Download Now! http://messenger.yahoo.com/download.php -- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@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 materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@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 materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding-unsubscribe@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.
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