Consider the following questions asked in the interpretation IX-16-3. “Background: Company A qualified a WPS joining a P-Number 5A material to itself in accordance with QW-283 by buttering both groove faces using a filler metal that does not conform to an AWS classification but is identified on the PQR by trade name. The buttered ends … Read more
Buttering is a concept that is widely used in welding field. Buttering is the weld metal deposited on the surface of one or both parts to be joined. This deposit is done with a specific purpose in mind, and the purpose can be different under different situations. In this article we shall see various purposes … Read more
When a PQR has been qualified with base metals of a certain P-Number (or a combination of P-Numbers), that PQR can be used in production for joining base metals of only certain P-numbers. Which P-Numbers are those? Where is this subject addressed in Section IX? This article answers these questions. The article begins with explaining … Read more
I have been procuring welding consumables for Section III equipment for more than a decade. Section III pertains to nuclear facility components. What should one keep in mind when procuring welding consumables for Section III equipment? How are the requirements any different from welding consumables for fossil boilers or any other pressure equipment? A raw … Read more
Every welding engineer knows the importance of preheat. It has an important effect on the properties of the weld. There exists a lot of literature stating the importance of preheat, ill-effects of not adopting preheat, methods of preheat, how to calculate preheat and so on. This article explores the various aspects of preheat with regard … Read more
Article II of ASME Section IX deals with welding procedure qualifications. Under QW-250 of Article II are contained a number of tables, titled QW-252 to QW-267. Each table is dedicated to a process such as SMAW, SAW, GTAW, and so on. These tables contain a listing of essential variables, supplementary essential variables and non-essential variables … Read more
Section IX of ASME BPVC has always required that the welding qualifications shall be done under the full supervision and control of the qualifying organization. This roughly meant that the welding of the test coupon must be done under the express direction and control of the organization; while functions such as preparation of coupon, lab … Read more
This article covers only a couple of the questions that get commonly asked pertaining to qualification of WPS with toughness testing. Surely many more interesting issues can be explored around the subject. Do feel free to add your own insights in the comments section below. Using a PQR Qualified With Toughness For Joints Not Requiring … Read more
ASME Section IX considers that depositing corrosion resistant overlay requires a different skill than the skill required to weld on groove welds, fillet welds, build ups, etc. Thus, in QW 381, Section IX provides for the stipulations governing the welding performance qualifications for corrosion-resistant weld metal overlays. In this article, we shall discuss various aspects … Read more
Qualifying your welders and procedure specifications in compliance to ASME Section IX requires knowing Section IX with some intimacy. It is important to know the expectations of the code properly, so that full compliance can be ensured. Section IX lays out both technical as well as administrative requirements. While most welding engineers go to great … Read more