ISO 3834-1:2005 pdf download.Quality requirements for fusion welding 5 Selection of the appropriate level of quality requirements
The selection of the appropnate part of ISO 3834, speclflying the required level of quality requirements, should be in accordance with the product standard, specification. regulabon or contract. Because ISO 3834 may be used in a variety of situations and for different applications, definitive rules on the level of quality requirements to be adopted in individual circumstances caniiot be 9iven in this clause.
ISO 3834 may be applied In a variety of situations. The manufacturer should select one of the three parts speciflying different levels of quality requirements, based on the following criteria related to products;
— the extent and significance of safety-critical products; the complexity of manufacture;
the range of products manufactured;
— the1ánge of different materials used;
-- the extent to which metallurgical problems may occur;
— the extent to which manufacturing imperfections. e.g. misalignment, distortion or weld imperfection, affect product performance.
A manufacturer that demonstrates compliance to a particular quality level is considered to have established compliance to all lower levels without further demonstration (e.g. a manufacturer compliant to comprehensive quality requirements (I.e. ISO 3834-2) demonstrates compliance with standard quality requirements (i.e. ISO 3834-3) and elementary quality requirements (i.e. ISO 3834-4).
ISO 3834 may be applied In a variety of situations. The manufacturer should select one of the three parts speciflying different levels of quality requirements, based on the following criteria related to products;
— the extent and significance of safety-critical products; the complexity of manufacture;
the range of products manufactured;
— the1ánge of different materials used;
-- the extent to which metallurgical problems may occur;
— the extent to which manufacturing imperfections. e.g. misalignment, distortion or weld imperfection, affect product performance.
A manufacturer that demonstrates compliance to a particular quality level is considered to have established compliance to all lower levels without further demonstration (e.g. a manufacturer compliant to comprehensive quality requirements (I.e. ISO 3834-2) demonstrates compliance with standard quality requirements (i.e. ISO 3834-3) and elementary quality requirements (i.e. ISO 3834-4).
Annex A lists criteria which assist in the selection of the appropriate part of ISO 3834.of metallic materials - Part 1: Criteria for the selection of the appropriate level of quality requirements.
