This British Standard gives guidance and recommendations for assessing the acceptability of flaws in all types of structures and components. Although emphasis is placed on welded fabrications in ferritic and austenitic steels and aluminium alloys, the procedures can be used for analysing flaws in structuresmade from other metallic materials and in non-welded components or structures. The methods described are applicable at the design, fabrication and operational phases of the life of a structure.Cross References:BS EN ISO 17636-2BS ISO 12108BS EN ISO 22825ASTM E1921 BS EN ISO 13588BS EN ISO 10863BS EN 17640BS EN ISO 17638 BS EN ISO 6892-2BS EN ISO 15548BS EN ISO 6520-1BS EN ISO 17643BS EN ISO 15626BS EN ISO 19285BS EN ISO 17637ASME Boiler and Pressure Vessel Code Section IIIBS 7608BS EN 10025-2BS EN ISO 23278BS EN ISO 3452BS EN 1370BS EN ISO 10675BS EN 1993-1-2BS 8571PD 5500BS EN ISO 6892-3ASME Boiler and Pressure Vessel Code Section IIBS 7448ISO 12135BS EN ISO 11666 BS EN ISO 15549BS EN 10025-3BS EN ISO 23277BS EN ISO 7539 BS EN 10025-4BS EN ISO 17636-1BS EN ISO 15653BS EN 1999-1-3 BS EN ISO 6892-1