Welding-validation,

Definitive Approval Stamp.

SOLUTIONS with Effective, Practical Advice



Reality Proof

Welding Problem? Solve it! with
Help from a Welding Professional
Contact Us.

Note: To view Google Ads, Pls.
Right Click and
Open in a New Window.

Welding-validation is a relatively new concept that should be understood.

It will probably be used more and more by Customers and Certifying Agencies.

It intends to ascertain that all conceivable means were used to guarantee that products meet all requirements.

In particular for welded constructions proofs should include also hidden characteristics not readily verifiable.

Validation is the process of checking if something satisfies certain criteria.

It should be used with precise reference to the discipline to which it is applied and it means different things in different situations.

It may also be applied to different activities having nothing in common with Welding Technology.

For Computers, Pharmaceuticals, Foreign Degrees, Food Production, Human Communication, Validation may be required for other specific purposes.

Why Welding-validation?

In engineering Welding Validation confirms that the needs of an external customer or user of a product, service, or system are met.

The term Welding validation is not yet standardized.

Both the American Welding Society and ASM International provide no definition, universally accepted, for the term.

In the context of manufacturing however, Validation is generally part of Quality Management Systems.

It is required to prove the reliability of the Organization providing Goods or Services and it is considered an essential ingredient.

It is the accepted way for assuring the integrity of materials, processes and manufactured items.

The Welding-validation process is designed to demonstrate that the entire Production is always under scrutiny.

Inspection activities and indeed the whole Quality Assurance System must prove to meet continuously and repeatedly all requirements.

In particular, for satisfying in part Welding validation requirements, any manufacturing facility employing welding is requested to demonstrate that welding equipment is in good operating condition.

Both the Customer and the appointed Authority should be satisfied that production means are being subject to scheduled maintenance, controls and periodic calibration.

In the specific case of Non Destructive Testing applied to welded structures, there is considerable consensus as to what validation means.

In fact it was found, often with much anguish and loss, that Non Destructive Testing may miss important clues to questionable indications, if applied nonchalantly by unscrupulous or inadequate Organizations.

Note: To view Google Ads, Please
Right Click and
Open in a New Window.

Welding validation relates to meeting the requirements of an official Agency enforcing adherence to specific Codes or of an external Customer, as applicable, for example, to NDT equipment, methods, procedures and inspectors.

The adequacy of NDT equipment, its current full operational order and calibrations, preparation and skill of personnel, the application of suitable methods and procedures, and the correct interpretation of results are all elements in need of Welding-validation by an unbiased and reliable external agency.

These Welding-validation conditions are designed to prove that the standard requirements, guaranteed by the organization providing welding, have indeed been met within its Quality Manual provisions.

The Company and all eventual Subcontractors are requested to submit for review documented evidence demonstrating that all fixed Procedures and established written Instructions are in fact implemented, so as to be acceptable to the Customer or to the Certifying Agency.

In the open literature reference a different meaning can be found, referring to Welding-validation of a schedule, as a process whereby experienced welders were asked to determine the productivity of the baseline welding procedure.

In Research work the term Welding-validation is used for the purpose of determining if a model proposed for explaining a certain result or for simulating a certain process can be used for predictions, as in the following sentence:

"Thermal cycles measured with thermocouples embedded in specimens are employed to validate a numerical thermo-metallurgical model of an Electron Beam Welding process."

Welding-validation of parameters is used to describe the assessment of a Welding Procedure Specification (WPS), generally in an experimental situation, as opposed to a production environment.

An Article titled Validating the Resistance Welding Process
was published in the December 2009 Issue of the Welding Journal at
page 42. The method described is applicable to all resistance welding applications. See it at
http://files.aws.org/wj/2009/12/wj200912/wj1209-42.pdf

The following documents are applicable for Welding-validation.

ISO 17662:2005
Welding - Calibration, Verification and Validation of Equipment used for welding, including ancillary activities.

BS7570:2000
Code of practice for the validation of arc welding equipment.

The following article explains the requirements of the above code:
Validation of arc welding equipment - revision of BS7570
http://www.twi.co.uk/content/spgbmmay2001.html

* * *

Any questions or comments or feedback? Write them down and send them to us by e-mail. Click on the Contact Us button in the NavBar at top left of every page.

Hardness Testing
made simple Let us remind you that, if you are interested, we offer a no cost subscription to our Practical Welding Letter and a bonus book in pdf format to be made available for download to your computer on the subject of
PRACTICAL HARDNESS TESTING MADE SIMPLE.
Please Subscribe.

To reach a Guide to the collection of the most important Articles from Past Issues of Practical Welding Letter,
click on Welding Topics.

Note: To view Google Ads, Please
Right Click and
Open in a New Window.

Back Home
Quality
Site Map


Welding Standards
Welding Control
Welding Testing
Welding Qualification
Welding Inspection
Welding Education and Training
Welding Books
Welding Design
Welding Information
Welding Procedures
Welding Properties
Brazing Inspection
Weld Macro
Welding Distortion
Welding Defects


If you did not yet find what you need, why not typing your question in the following Search Box?


How can you solve
your Welding Problems?

Click on Welding Consultation and
Metallurgical Expertise.

Welding-validation Top


Watch the following Video:

Click on the following image to watch the SBI! TV Show!


SBI TV Show

POWERED BY:

Solo Build It!

Click on this Logo NOW!


Watch - The Video:

Why Don't I Work From Home?

and also

Think outside the Cube.

Follow this Invitation!

Experience C2 power and flexibility in action by clicking SBI! 2.0 For You.
Where SBIers share their business-building experiences first-hand.
You will realize that there is nothing comparable to SBI! when you read
real stories from SBIers who share how C2 has helped them
expand, accelerate, build trust and monetize their sites.

Copyright (©) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017
by Elia E. Levi and www.welding-advisers.com
All Rights Reserved.

SBI!