The UNI EN ISO 3834 standard is a guide that defines the quality requirements for the correct management of the manufacturing process by welding. It is divided into 5 parts, divided as follows:
Part 1 – Guide for selection and use
Part 2 – Extended quality requirements
Part 3 – Normal quality requirements
Part 4 – Minimum quality requirements
Part 5 – Documents that must be complied with in order to declare compliance with the quality requirements of ISO 3834-2, ISO 3834-3 or ISO 3834-4
The standard is structured in such a way that it can be used for the manufacture, both in the workshop and on the construction site, of any type of construction welded by casting.
The main reasons that drive companies to adopt a management system compliant with ISO 3834 are:
Definition of welding requirements; as a guideline for the verification / qualification of suppliers of welded products, Definition and maintenance of quality requirements for welding.
It defines the quality requirements for welding and is an internationally recognized standard:
– as a guideline for the management of the “special process” welding
– as integration of UNI EN ISO 9001
In relation to the European directives (PED, CPD, Simple Containers), it constitutes a “presumption of conformity”.
It is mandatory for Steel Buildings (DM of 17/01/2018 Technical Standards for Buildings published in the Official Gazette of 04/02/08).
The company can decide which part is applicable to its processes on the basis of parts 2, 3 or 4, using part 1 of ISO 3834 for the choice, in addition to the provisions of national legislation.
The system conforming to ISO 3834 can be subjected to verification of conformity to the international standard by a Certification Body. The certification process provides, after development and a suitable implementation period within the company, for the management system; the audit by the same Certification Body, through two phases conducted separately.
In particular, the Phase 1 audit in which an analysis is conducted on the compliance of the documentation prepared (manual, procedures, instructions) and on compliance with the main applicable legislative requirements, Phase 2 during which the application and effectiveness are verified of the implemented system. The Audit of the Certification Body is aimed at assessing the compliance of the management system with the reference standard with respect to a specific operating area indicated by the organization (so-called “certification purpose”).