How to check wps and pqr

A welding procedure specification is a document. It contains a set of written instructions that welders use to make a weld.

how to check wps and pqr

Normally, the WPS is written in compliance with a specific code, specification, or definition. A competent review of welding procedures helps to ensure that production welding is done according to the requirements of the construction code and any additional requirements imposed by a contract specification and applicable industry standards.

Unfortunately, many welding supervisors are not trained in the proper use of welding procedures. Too often, welding procedures are a form of window dressing that are pulled from files to show inspectors, or used at the beginning of contracts and never seen again.

The examples above are just a few of the glaring errors found during welding procedure reviews. The list of mistakes and omissions goes on and on, from minor inconsequential and typographical errors to major critical miscalculations. In some instances nothing could be further from the truth. Most errors seem to be due to a lack of attention to detail. Therefore, the writer should always:. Whenever possible, ask another competent individual to review the document. Also consider asking an experienced welder to look at the procedure.

A review by independent organizations or third-party insurers who have welding experts generally helps to ensure the documents are properly written, qualified and, certified. Source: Luke, Spencer O. Reviewing Welding Procedures. Inspection Trends, 16 3 Inspection Trends is available for free with your AWS membership. Good question! After inspection performed by NDTit was necessary to repair these joints.

In the case described aboveboth welding procedures are qualified according to AWS D1. Thank you for your inquiry. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. Yet, imagine the consequences if any of the following occurred: Piping for critical steam service was welded with the wrong type of consumable.

Austenitic stainless steels for corrosive service were welded using plain carbon steel welding consumables.

how to check wps and pqr

Piping or vessels for cryogenic service were welded without the required Charpy impact tests. A large percentage of errors are due to the writer of the WPS failing to do the following: Proofread the document Do a variable-by variable code check Ask himself if the procedure makes good sense Most errors seem to be due to a lack of attention to detail.

Therefore, the writer should always: Check the code. Check the contract.

How to write a Welding Procedure Specification (WPS)

Leave a Reply Cancel reply Your email address will not be published. Welding Education.Welding requires skill. Because of huge number of variables involved, the knowledge of the welding engineer and the skill of the welder need to be validated by a series of tests. A WPS is a document that describes how welding is to be carried out in production. Its purpose is to aid the planning and quality control of the welding operation.

They are recommended for all welding operations and most application codes and standards make them mandatory. A PQR is required when it is necessary to demonstrate that your company has the ability to produce welds possessing the correct mechanical and metallurgical properties. A welding procedure must be qualified in accordance with the requirements of an appropriate welding procedure standard, such as ASME Sec IX, as follows:.

The main differences between a PQR and a WPS

Sufficient details to enable any competent person to apply the information and produce a weld of acceptable quality. The amount of detail and level of controls specified on a WPS is dependant on the application and criticality of the joint to be welded.

For most applications the information required is generally similar to that recorded on a Procedure Qualification Record PQRexcept that ranges are usually permitted on thicknesses, diameters, welding current, materials, joint types etc. If a WPS is used in conjunction with an approved procedure qualification record PQR then the ranges stated should be in accordance with the approval ranges permitted by the PQR. However careful consideration should be given to the ranges specified to ensure they are achievable, so that these ranges represent good welding practice.

Some codes, such as AWS D1. It is not necessary to prepare a PQR in such cases. However, the pre-qualified WPS have a specified range of parameters under which the weld must be produced. When the use of SWPSs is permitted by referencing code section, your company does not have to perform one or more procedure qualification tests. Once the procedure is approved it is necessary to demonstrate that all your welders working to it have the required knowledge and skill to put down a clean sound weld.

how to check wps and pqr

If the welder has satisfactorily completed the procedure test then he is automatically approved but each additional welder must be approved by completing an approval test to an appropriate standard such as ASME Sec IX as follows:. In general welds must show a neat workman like appearance. The root must be fully fused along the entire length of the weld, the profile of the cap should blend in smoothly with the parent material and the weld should be significantly free from imperfections.

Reference should be made to the acceptance standard for precise details. In addition to the above, you may require independent inspection of the welds by the following qualified personnel:. Third Party Inspections.Q: I'm reading up on the proper procedure and practices for developing a weld procedure specification WPS and procedure qualification report PQR. From my limited perspective I'll be writing down the proposed values on the PQR, sending it out for testing, and if it comes back with a passing marks I'll use that information to create a WPS.

Any help on the how-to is much appreciated!

Difference Between WPS and PQR

Also, do you have some sort of donation or fund in your name? I feel guilty asking for your assistance without some way to pay you back. If you've any ideas, let me know! Note: It could be several. Once you have a preliminary WPS, break down each variable and ask yourself what you need to do to achieve it.

I like that. You may find AWS B2. Finally, and most important, yes, I have a GoQuenchMe. You show up in my part of the country or I show up in yours and you have to buy the first round. I believe in keeping it simple. Rochester, MN Email Paul Cameron. Read more from this issue. View the Digital Edition. Easily access valuable industry resources now. Enjoy full access to the digital edition of STAMPING Journalwhich serves the metal stamping market with the latest technology advancements, best practices, and industry news.

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Punching and Other Holemaking. Shop Management.WPS is a set of welding instructions. It aids in planning and ensuring quality control of the welded product as well as future reproductions of the product. Welding parameters, such as joint design, position, base metals, electrical characteristics, filler metals, technique, shielding, preheat, and post-weld heat treatment are all detailed in the WPS document.

WPS further explains the rules and details of the test and how the pieces should be assembled. Simply put, a WPS is like a blueprint for welders to produce the same quality of welded product over and over again.

Product Qualification Record is another type of document that also refers to welding. In addition, it also includes some observations or other matters regarding welding procedures and specific tests like tensile tests and guided bend tests. It may also show the visual inspection and fillet weld test results.

The PQR is prepared by a qualified or licensed individual and submitted to the people concerned. The inspector will then endorse the company and its product to the industry and market. Cite Celine. June 7, Thanks for these details. Name required. Email required. Please note: comment moderation is enabled and may delay your comment. There is no need to resubmit your comment.

Notify me of followup comments via e-mail. Written by : Celine. User assumes all risk of use, damage, or injury. You agree that we have no liability for any damages. Both documents are not the same but are closely related to one another. You might say they even complement each other. Each document, while closely related, comes with a different purpose.

WPS serves as a blueprint for a written instruction or guide on how to create a welded product based on a certain standard and quality. Meanwhile, PQR is a document that checks whether the standard is being followed by inspecting and answering the document regarding specific areas and tests. The Welding Procedure Specification and Product Qualification Record documents have similar items in their body, specifically the welding parameters. In a WPS, the welding parameters are explained in the context of instructions.

The purpose is to make the welder reproduce the product with a particular quality and standard.

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On the other hand, PQR uses these welding parameters as a checklist to see if the standard is met or not. The PQR is a standard document, but the people who use it may not necessarily come from the same background. Welders and engineers who create the welded product often peruse a WPS to make the product comply with the standard quality. In contrast, the PQR is often associated with inspectors, manufacturers, or contractors who use the document for testing and verification purposes.

A WPS is usually filled with numerous texts, images, and sentences in accordance to its being an instructional guide. On the other hand, a PQR is like a checklist with blank lines and spaces for written notes that will be filled out by the inspector during the inspection. Before the inspection, the WPS document is the object of attention of the welders.

Author Recent Posts.During that time, we were able to interact with the students and get some insight into how things were going for them. Collectively, we found that most students were at least somewhat familiar with the majority of the information that was being covered during the seminar. However, there was one topic that drew a complete blank from students time and time again: Welding Procedure Specifications and Procedure Qualification Records.

A Welding Procedure Specification, or WPS, is a document that serves as a guide for the effective creation of a weld that meets all applicable code requirements and production standards.

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Think of a WPS as a recipe for welders. This includes information such as base metal grade, filler metal classification, amperage range, shielding gas composition, and pre-heat and interpass temperatures. The idea is that if a group of welders adhere to all the details on a WPS, they should each be able to produce welds with reasonably similar mechanical properties.

To answer this question, we need to take a step back. You see, before a WPS can be drafted, a preliminary set of procedures and materials must be established. This initial procedure is used to create a series of welds which are then mechanically tested to ensure they meet all applicable requirements. The procedures for creating and testing the sample welds, as well as the final results, are documented on a Procedure Qualification Record, or PQR.

If the test results are acceptable, the PQR is approved and can then serve as the foundation on which one or more WPSs are drafted.

This document offers an approximate breakdown of the topics that are covered in each part of the test. Part B focuses on the practical application of inspection, and is widely referred to as the hands-on portion of the exam.

They can be found in the annexes toward the tail end of the document. This course was created in response to continued feedback from students and educators, and covers the ins and outs of welding procedure specifications and procedure qualification records. This includes everything from what their purpose is, how they are drafted, what kinds of information they contain, and how to make use of that information. The course also covers the procedure qualification process, including detailed information on material properties as well as common nondestructive and destructive tests.

The instruction throughout this course is presented in a series of short modules, allowing you to internalize information bit by bit, instead of all at once.

Each module builds on concepts introduced in the previous one, and includes quizzes and interactive practice questions to help you really get a grasp of the material. For more information, please contact Keila DeMoraes at Ext. Your membership in AWS arms you with the latest industry news and intelligence, valuable networking connections and comprehensive educational resources that can fastitrack your career.

Part B consists of 5 distinct areas of study. AWS Member Network. Become a Member Become a Member. Become a Member. Facebook Twitter Instagram Youtube.During that time, we were able to interact with the students and get some insight into how things were going for them.

Collectively, we found that most students were at least somewhat familiar with the majority of the information that was being covered during the seminar. However, there was one topic that drew a complete blank from students time and time again: Welding Procedure Specifications and Procedure Qualification Records. A Welding Procedure Specification, or WPS, is a document that serves as a guide for the effective creation of a weld that meets all applicable code requirements and production standards.

Think of a WPS as a recipe for welders. This includes information such as base metal grade, filler metal classification, amperage range, shielding gas composition, and pre-heat and interpass temperatures. The idea is that if a group of welders adhere to all the details on a WPS, they should each be able to produce welds with reasonably similar mechanical properties.

To answer this question, we need to take a step back.

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You see, before a WPS can be drafted, a preliminary set of procedures and materials must be established. This initial procedure is used to create a series of welds which are then mechanically tested to ensure they meet all applicable requirements. The procedures for creating and testing the sample welds, as well as the final results, are documented on a Procedure Qualification Record, or PQR.

If the test results are acceptable, the PQR is approved and can then serve as the foundation on which one or more WPSs are drafted. Among other things, this document offers an approximate breakdown of the topics that are covered in each part of the CWI exam.

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Part B focuses on the practical application of inspection, and is widely referred to as the hands-on portion of the exam. They can be found in the annexes toward the tail end of the document. This course was created in response to continued feedback from students and educators, and covers the ins and outs of welding procedure specifications and procedure qualification records.

This includes everything from what their purpose is, how they are drafted, what kinds of information they contain, and how to make use of that information. The course also covers the procedure qualification process, including detailed information on material properties as well as common nondestructive and destructive tests. The instruction throughout this course is presented in a series of short modules, allowing you to internalize information bit by bit, instead of all at once.

Each module builds on concepts introduced in the previous one, and includes quizzes and interactive practice questions to help you really get a grasp of the material. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. What is a WPS?

What is a PQR? Part B consists of 5 distinct areas of study. Excerpt from AWS B5. So, Now What? Leave a Reply Cancel reply Your email address will not be published. Welding Education.Further to our last article where we discussed what a PQR and WPS is: This week we wanted to delve a little deeper and discuss the main differences.

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Both documents are closely related, but they are not the same. The PQR is a standard document, but the people who use it may not necessarily come from the same background. Welders and engineers who create the welded product develop a WPS to make the product comply with the standard quality. A WPS is usually filled with numerous texts, images, and sentences in accordance to its being an instructional guide. On the other hand, a PQR is like a checklist with blank lines and spaces for written notes that will be filled out by the inspector during the inspection.

Before the inspection, the WPS document is the object of attention of the welders. Each document has a different purpose. A WPS serves as a blueprint for a written instruction and a PQR checks whether the standard is being followed by inspecting and answering the document regarding specific areas and tests. The PQR acts as the evidence that the testing of the piece, that was used to write the WPS, was carried out and complied to the standard.

A WPS has the welding parameters explained in the context of instructions to allow for the welder to reproduce the product with a particular quality and standard. A PQR uses these welding parameters as a checklist to see if the standard is met or not. Skip to primary navigation Skip to content Skip to primary sidebar Further to our last article where we discussed what a PQR and WPS is: This week we wanted to delve a little deeper and discuss the main differences.


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