Dear Experts,
It is very strange that one of the small bore flange made of Inconel 625 forged (ASTM B564 UNS 6625) got a through thickness crack just near the tapering portion of a flange. The crack was noticed while performing the hydrostatic test. The thickness at the bevel end is 5 mm and...
Dear Experts,
A CRO (Corrosion resistant weld overlay) PQR is done on pipe in 5G position. Chemical analysis is to be done as part of the PQR and as per ASME Sec IX Figure QW-462.5(b), for 5G and 6G position the locations are mentioned for chemical analysis. However there is a note states...
Dear Experts,
QW-408.9 states For groove welds in P‐No. 41 through P‐No. 49 and all welds of P‐No. 10I, P‐No. 10J, P‐No. 10K, P‐No. 51 through P‐No. 53, and P‐No. 61 through P‐No. 62 metals, the deletion of backing gas....is an essential variable for GTAW process.
The point I am getting...
ASME Sec V Article 4 T-421, change of thickness(without specifying the range) is considered as essential variables which require re-qualification.
1. Does it mean a change of thickness even if it is 1 mm require re-qualification?.
2. How will we qualify UT procedure. is there any separate...
Dear Experts,
The three specimens from the HAZ side are tested found two values are less than minimum value permitted for single specimen whereas the average of the three specimens exceeds the average value required.
Am I allowed to go for retest?.
The code retest criteria is "when the...
Hi All,
Client specification calls for post weld baking/heating (not stated as PWHT) of a P No.1 material after welding for a specific reason. Does it consider a PWHT condition as per ASME Sec IX QW-407.1(a) Point#2, i.e PWHT below lower transformation temperature?
If it is considered as PWHT...
Hi Experts,
A new WN flange is welded to the existing piping and hence the line need to be tested hydrostatically/pneumatically as per ASME B31.3. Is it acceptable to use in-line weld test tool (the tool that is used for pressure testing of joints especially flange to pipe/fittings joint)...
Does ASME Sec IX allows to use dissimilar thickness test coupon for Procedure qualification (PQR)?. As per QW 202.4, it talks about the production dissimilar thickness only.
As per my understanding, ASME sec IX doesn't address the test coupon thickness configuration and it is worthless in...
Hi Experts,
Can we consider weld reinforcement thickness while specifying the weld metal thickness deposited for fusion welding process in PQR as per ASME Sec IX. Assuming only one process is used for qualification. I could not find a clause in ASME Sec IX for not to consider the thickness of...
Is it permitted to use of UNS S20910 hot rolled material for stem as per NACE MR 0175 Part 3 without any hardness requirement as per table A.3. I understand from the table A.3 that the S20910 can be used without hardness requirement. Hardness of Max 35 HRC is only applicable when the above...
Clarification of CVN test assembly as per AWS D1.1 (2015) Clause No. 4.27.3.
Please assume all essential variables will be same unless otherwise specifically mentioned in the below statements.
I have an existing PQR (lets say PQR-001) for a plate CJP weld with a thickness of 20 mm for 2G, 3G...
Dear All,
Clarification of CVN test assembly as per AWS D1.1 (2015) Clause No. 4.27.3.
Assuming all essential variables will be same unless otherwise specifically mentioned in the below statements.
I have an existing PQR (lets say PQR-001) for a plate CJP weld with a thickness of 20 mm for...
Dear All,
Clarification of CVN test assembly as per AWS D1.1 (2015) Clause No. 4.27.3.
Assuming all essential variables will be same unless otherwise specifically mentioned in the below statements.
I have an existing PQR (lets say PQR-001) for a plate CJP weld with a thickness of 20 mm for...
A PQR was qualified as per ASME SEC IX with two process, GTAW and SMAW with weld metal deposit thickness (t) of 8 mm each in a 16mm base metal thickness (T) of plate. What will be the BASE METAL THICKNESS range T (not deposited weld metal thickness) if a WPS is prepared with only GTAW process...
The dual certified material is used for procedure qualification (PQR) and the PQT has been passed. The material is certified to both A 36 (assigned as Group No I as per AWS D1.1 and P No. 1 as per Sec IX) and S275JR (classified as unassigned material as per both codes).
whether this PQR can be...
Hi all, A warm morning,
Could anyone advise that ASME Sec IX based WPS can be used for welding of cross country pipeline which is designed based on ASME B31.4 or B31.8. Please note that there is no specific client requirements. Request to all professionals that please reply with the relevant...
