In situations like this, where the client (or co-worker) insists that something can or cannot be performed due to code, I challenge them to find the requisite clause in code. Case closed.
You will need to make sure the WPS you use was qualified on API 5L-X70 material per API 1104, 5.4.2.2: "When welding materials of two separate material groups, the
procedure for the higher strength group shall be used".. Same for the repair WPS if you qualify them separately.
If you do this...
To add to the above, with respect to NDE, the following is also relevant:
https://www.ecfr.gov/cgi-bin/text-idx?SID=d2122275c64ef04e3458fb7a76a8637e&mc=true&node=se49.3.192_1243&rgn=div8
192.243 Nondestructive testing.
(a) Nondestructive testing of welds must be performed by any process...
Hi Joerg,
I personally always reference the relevant code so there is no misunderstanding. Also, as a point of information, the 21st Edition of API 1104 has not been incorporated by reference by the U.S. regulator; the 20th Edition is still relevant in the United States.
As far as Class...
Joerg,
PRCI publishes the "Guidelines for Interpretation and Application of API 1104 – Twenty-first Edition" (Catalog No. PR-186-124502-R01)from which responses follow:
1st question:
As per 5.4.2.1 a change in the welding process or method of application has to be considered as an essential...
API 1104 does not specify preheat temperatures, or for that matter, other welding parameters. The Company is required to demonstrate they have the engineering experience and knowledge to develop a welding procedure that is capable of making mechanically sound welds meeting API 1104 Section 5...
John,
As you have pointed out, Clause 4.9.2 of AWS D1.1 required NDE prior to mechanical testing. The CWI does not have the authority to circumvent Code requirements. The Engineer, as described in Clause 1.3.1 along with latitude provided in Clause 1.4.1 (both references AWS D1.1)has limited...
Probability of detection is dependent on several factors including but not limited to material type, thickness, outside diameter, welding process, expected imperfections, Code/specification acceptance criteria, ultrasonic shear wave/PA equipment, and technician experience.
I don't agree with...
It effectively means All (or any) Thickness, t , of Weld Metal in the Coupon, in. (mm) qualified for welder qualification. Simply put, it does not break the qualification weld thickness into subcategories based upon thickness alone. However, the next line item provides additional guidance...
I agree with David; looks like a failure to meet the minimum specification requirements.
When I review such documents, I double check the math as the results could have been reported incorrectly. The rounding/number of significant figures used for the calculation could possibly, though...
The Azar,
I looked through ASME interpretations before my initial reply. There were no relevant interpretations for this matter.
Common sense always needs to be applied to any welding situation, and it is your responsibility to make sure this happens.If you remain concerned, have several...
QW-288.3(e)is not specific to weld pass. As long as your PQR was qualified using, in your case, 1.2mm, 1.6mm and 2.0mm diameter filler metal, there is no restriction for use in any specific pass during production welding.
