Recent content by birken

Is there any software dealing only with brittle fracture assessment Level-1 and Level-2 according to API 579? I have seen Signal FFS but that deals with a number of defects and very expensive. Birken

Thank you. A mainstream FFS software created a doubt in my mind as it explicitly stated that Level-1 assessment is not applicable on materials other than P-No.1 G-No.1 & P-No.1 G-No.2. Clear enough now, as Table 3.2 for Curves also mentions materials other than P-No.1 G-No.1 & P-No.1 G-No.2.

Any thoughts over this one?

Is level 1 assessment as per API 579 for brittle fracture applicable to P1 Group 1 & 2 materials only? Just need this clarification to move forward. Thank you. Birken

In this case, piping isometrics mentioning elevation for first flanges of risers are matching the field installation.

These lines under discussion contain process drain. Where this reference of 12" can be found in order to implement this recommendation?

So there is no issue in having flanges so close to the ground? Water accumulation, soil interface causing corrosion?

Hi All, At our gas plant, I have seen some pipes connected to the underground drain with flange connections just inches aboveground (3-5"). Is this a good practice for installing pipe risers?

You can use either E8018-B2 or E7018 just like you are using P11 & carbon steel to carry the service. This weld joint will be as strong as the carbon steel is, so better use filler matching to carbon steel instead P11. This is what we had been doing since years. We have qualified procedure of...

PipingClassic, You may like to use PetroPipe software to get you calculation verified. It does the calculations for required thickness according to different piping codes including ASME B31.1, B31.3, B31.4 & B31.8. It's a freeware. Birken

VanChe, I would advise you to use WeldPulse software which would help you in getting and knowing about the approval ranges for both SMAW & GTAW processes considering procedure or performance qualifications. You can know more about the software at http://www.weldpulse.com Not a hefty amount of...

Welder qualification has to be done for branch welds also. You need to study Article III of ASME IX for your specific case. Deposited weld metal thickness is an essential variable for welder qualification. Birken

We need to weld a branch connection of 10 mm thick branch pipe to a header of 30 mm. P.No. is 1. Impact test required and PWHT mandatory. Two PQRs are available with following thickness ranges: 1. 8.5 - 17 mm (without PWHT) impact tested 2. 16 - 48 mm (with PWHT) impact tested Can I use these...

1. Yes 2. Test coupon can be of any product form (doesn't have any impact on qualification - product form, not an essential variable), position is important as in which position you need to qualify. You just need to continue reading Article III of ASME IX and you will start understanding the...

smart143, The exact ferrite number of the filler with WRC 1992 diagram comes out to be 34.09 FN. Reduction in FN is unavoidable during any heat treatment. To attend this matter and meet the specifications, an appropriate filler may be considered. You need to predict FN for the weld joint...