The articles in this category mainly focus on ASME section IX, section III NB, Section II C.
In this article we shall discuss the various aspects of a WPS for carrying out weld repair and build up on a component, in accordance with ASME Section IX. QW 202.3 of Article 2 of Section IX addresses the use of WPSs qualified on groove welds for repairs in welded joints, and for build up … Read more
In this article I have discussed in some detail the subject of welding positions. The entire discussion has been done in reference to the Section IX of ASME Boiler and Pressure Vessel Code (BPVC). I have been a welding engineer for more than nine years. One question that has always troubled me about the welding … Read more
When a welder is qualified in accordance with ASME BPVC Section IX, he is only eligible to weld within the qualified ranges of the variables followed in his qualification test coupon. The qualified ranges of only a few variables (that are laid out under QW-350 in Article III of Section IX) need to be reckoned. … 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
This article explores the following four aspects of preheat and interpass temperatures in code welds: Please note that most of the content of this article, like a bulk of this website, is centred around ASME Section IX. Also, the relevance of some of the ideas discussed here might be more to CS and LAS metals. … Read more
In the context of welding on code equipment, SWPSs occupy an interesting place. One can use a readymade SWPS directly on the job, without having to do a procedure qualification. This seems attractive. However, can one really use a SWPS directly? This article explores a few aspects related to SWPSs. Please note that most of … Read more
This article discusses a proposal for a change under NB-2420 of Section III NB of ASME BPVC. A. Introduction The line 9 of last paragraph of NB-2420 of BPVC Section III NB says that use of controlled chemical composition is only permitted for carbon steel and low alloy steel consumables. This rule poses significant difficulty … Read more
ASME BPVC is a magisterial body of work. Remarkably consistent over several decades, it commands respect across the world for being concise, reliable, authentic, precise, etc. Many adjectives may be deployed to describe it. It is not however perfect. It has constantly evolved over the years, a new edition of all sections comes out every … Read more
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