Page 16 - SHY2012

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One way for a company to show that its weld-
ing production and products meets appro-
priate quality requirements is through the
implementation of EN ISO 3834 (formerly EN
729). Revised and updated in 2005, this is
the single most important standard regarding
the achievement of welding quality. Many EN
product standards and EU directives require
manufacturers to comply with EN ISO 3834.
EN ISO 3834 is not a quality system standard
but it can be used as a very useful tool for
fulfilling EN ISO 9001:2000 requirements
for special processes when this standard
is applied by the manufacture. It can also
be used by the manufactures by itself as a
way to demonstrate to a third par ty that the
manufacturing of welding products is car-
ried out according to an appropriate quality
requirement level.
Whenever a manufacturer refers to compli-
ance with a cer tain ISO 3834 quality level, it
should be sufficient to demonstrate the man-
ufacturer’s capabilities are fully adequate for
European Welding Federation
– Recent Achievements
and Future Challenges
Quintino L., Ferraz R.,
Fernandes I. and Jessop T.
President of EWF Tim Jessop.
Figure1. Failu-
re of welded
The importance of welding to the global economy is known to be of significant
relevance though estimations of its real impact done on a study conducted in
Germany in 2005.This thorough study,, based on collection of data, statistical
analysis and modelling, led to results that show that the total added value genera-
ted by European joining industry is around 83 Billion Euros per year and estimates
that approximately 2 million people work in welding and related technologies.
It is also well known that, if welding is not done properly, catastrophic failure
of constructions can occur which create serious damage to people and also
represent significant economic losses. Three examples are shown In Figure 1.
These were both caused by brittle fracture initiating from a weld defect. Fortu-
nately such occurrences are reduced these days, but mistakes in welding can
be costly for other reasons. For example it has been estimated that the cost
of repairing an unacceptable weld can cost 5 to 6 times the cost of welding it
correctly in the first time.