This part of ISO 3834 provides a general outline of ISO 3834 and criteria to be taken into account for theselection of the appropriate level of quality requirements for fusion welding of metallic materials, among thethree levels specified in ISO 3834-2 [3], ISO 3834-3 [4] and ISO 3834-4 (5)It applies to manufacturing, both inworkshops and at field installation sites.NOTE 1 ISO 3834-2, ISO 3834-3 and ISO 3834-4 provide complete sets of quality requirements for process controlrelated to all fusion welding processes (for each process separately or in combination as specified). ISO 3834-5 specifiesthe documents with which it is necessary to conform to claim conformity to the quality requirements of ISO 3834-2,ISO 3834-3 or ISO 3834-4.This part of ISO 3834 does not specify requirements for a total quality management system. However,Clause 6 identifies quality management system elements where their inclusion will complement ISO 3834.NOTE 2 ISO 3834-2, ISO 3834-3 and ISO 3834-4 may be used on their own by a manufacturer or in conjunction withISO 9001:2000.