Recent content by quatle

DekDee and CWEng I'm sorry for put wrong the acceptable table in my exel summary file. re-correct WPS Pcm is 0.22% and purchase materials is 0.56% sample. almost the material are Flange and fitting.

DekDee thank you for your support, English is my second language. we can see the section of clients specification as below: 4.2. Essential Variables 4.2.1. Essential variables shall be those required by the applicable industry code (e.g., API 1104, ASME Section IX or AWS D1.1) and the...

CWEng, my project is urgently, If I do a new qualify PQR with Pcm highest, it mean that project will delay. 35% purchase materials higher WPS. almost my project is CS (P nos 1). pls advise how to do, new PQR qualify or other better solution for this case. Clients specication is not specify for...

DVWE, Code applicable is ASME B31.3, 2014. but client's specification required Pcm allowed plus 0.02%

hello everyone I have one question is: when I qualify a PQR carbon steel A106 Gr.B pipe to pipe, the Pcm calculated in mill certificate is 0.245%. however, Pcm carbon (A106Gr.B) piping material show on mill certificate for fabrication in my project is 0.255%, what we can do in this case.

Hello everybody as subject, I have many joints Olet (weldolet/Nipoflange) are seft reinforement more than 25mm welded to pipe run 10''SCH80(15.09mm) & 12"SCH80(17.48). As per ASME B31.3 2014 defined that Tm+Tc>25mm in FIG.328.5.4F is need to PWHT or preheat 95deg without PWHT. but currently we...

Weldstan, where is para in B31.3 permitted performing NDT before PWHT?

Hello DekDee Material is CS P1 Applicable code is ASME B31.3 Defection is found after PWHT, that mean we must repair by welding - RT or UT - re-PWHT - UT right? as ASME B31.3 2014 edition is preheating 95deg without PWHT, we can preheating over 95Deg for repair by welding without re-PWHT

Hello BigInch normally, we performed RT before PWHT [i]as this saves the time and money of having to repair welds and again perform heat treatment on the repair. As the owner we are willing for the contractor to do the NDT before heat treatment, but at his own cost. The NDT carried out before...

Hello everybody any ASME code don't mentioned NDT after or before PWHT, anyone can explain for me understand why?

one more question. our Client Piping fabrication specification required for PWHT is 19mm and above, I think this specification don't update by latest Code ASME B31.3. the Code 2014 required more than 25mm for PWHT, so what we should follow code or Client Spec. thanks