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.
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
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...
Ferrite measurement would have been taken prior to heat treatment.
The limits apply to as-welded deposit.
Using constitution diagrams to predict ferrite number for as-welded deposit is the way to go. This would give some idea of ferrite number before applying heat treatment.
Birken
Following B31.3 any P No.1 material having thickness greater than 20 mm requires heat treatment irrespective of which filler is used to weld. Like if you weld plain carbon steel with stainless steel with groove joint thickness greater than 20 mm, you have to perform PWHT (for the CS side) in...
The software is WeldPulse and you can download a free trial from their website http://www.weldpulse.com
That would work for few days and then you need to purchase the license for continuous use.
Birken
You can start from the following document enabling you to learn about developing a preliminary welding procedure.
http://www.scribd.com/doc/159757497/How-to-Write-a-Preliminary-Welding-Procedure-Specification-pWPS
Similar documents can be found for welder qualification.
Birken
Though I haven't come across such a situation but in my opinion, there shouldn't be any harm in going with any of the options.
You just need to be sure that the welds made with the welding procedures pass additional tests also and update the record.
Birken
