To give more details on what I posted regarding the different interpretation, here is the Client Engineer's reply which I agree with.
There are not many direct Code interpretations available that could be of help with shedding some light on this topic and as a consequence, the present reply...
Thank you for sharing this photo DekDee. I have never seen something like this before.
I would appreciate if you can share more info, if possible.
Regards,
MD.
Hello,
In case anyone ended up here after searching a similar case, here is an update.
After alot of searching in ASME B31.8 before posting this thread, I consulted the designer, client Engineer and client Inspector. Surprisingly, each gave a different opinion. The designer suggested that we...
I am seeking your expert advise on determining the governing thickness for both welding and PWHT when welding a sockolet on a blind flange per ASME B31.8.
I have consulted several welding engineers and got different replies. Also, I did not find this case in any of the standard interpretations...
We have ASTM A335 P11 pipes that were post weld heat treated per ASME B31.3. We took the hardness values before and after PWHT for some reason. The resulting hardness values are below.
I noticed that the average hardness value of the four readings in the weld zone is higher after the PWHT. My...
Thank you all for your replies.
We had some cases where the PRV did not function after exceeding the set pressure, but I believe this has nothing to do with the sizing. These are probably malfunctioned PRVs.
Regards,
Mohammed
I work as a client rep. and in one of the clients specs there is a requirement for sizing the PRV used during hydro testing any piping system per API 520.
I did some research on sizing the PRV and found that the relief capacity depends on the flow rate. We mainly use water for pressure testing...
Shahpar,
Please specify which code you are working with since the terminology differs from one to another.
Assuming that you are using ASME B31.3, there are two definitions: the "Design Minimum Temperature" and the "Design Temperature". Following is an excerpt from the 2016 edition.
301.3...
ISO 9001 is a standard to establish, maintain and improve a Quality Management System (QMS).
Quality Assurance is anything you do to verify (or assure) that whatever you claim you are doing, is actually being done.
So, if let's assume your company X is having contracts to provide products or...
In the 2014 edition of B31.3, Para 331.1.7 was removed as well as the BHN values in Table 331.1.1. However, Para 331.1.7 is still referenced throughout the standard.
Does this mean that Hardness testing is no longer required after PWHT?
Mohammed Diab.
Inspection Supervisor - Saudi Aramco.
As an answer to your first question, the following is a copy-paste from an API 1104 commmittee reply to an interpretation:
"PROCEDURE QUALIFICATION One of the essential variables listed in Paragraph 2.4 is 2.4.2.3 "Joint Design." Here it states that a major change in joint design constitutes an...
API 570: http://www.api.org/certification-programs/individual-certification-programs-icp/icp-certifications/api-570
API 1169: http://www.api.org/certification-programs/individual-certification-programs-icp/icp-certifications/api-1169
Mohammed Diab.
Inspection Supervisor - Saudi Aramco.
We are reviewing a WPS for a Split-tee hot-tap in accordance with API 1104 Annex B. In the WPS, the contractor is considering all the welds of the split-tee to be in service, including the longitudinal joint that has a backing strip, and they are considering the essential variables only in Annex...
I agree with DekDee,
This criteria is usually provided with the project specs, or the client will mandate the contractor to develop it, subject to his review and approval.
There are 2 Welding Repair Rates that need to be calculated and monitored: Welder repair rate and Project Welding repair...
