This category of articles mainly focusses on welder qualifications, procedure qualifications, and a few practice cases regarding ASME Section IX.
A new edition of ASME Section IX is published every two years. The most recent one was published in July 2023, and becomes effective from January 1, 2024. This article discusses the main changes that have been introduced in the 2023 edition of ASME Section IX. Changes in Article I: General Requirements The following are … Read more
Consider the following questions asked in the interpretation IX-16-48. ‘Background: Company A qualified a WPS to join an unlisted base metal (similar to P-Number 5A Group 1) 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 … Read more
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
In this article I have discussed how to write a WPQR – short for Welder Performance Qualification Record. This discussion is in reference to Section IX of ASME BPVC. A WPQR is a record of actual events that occurred during a welder’s performance qualification in accordance with ASME Section IX. Below is the suggested format … 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