1) IIW Recommendation SST-1141-89: “Application of an Engineering Critical Assessment in Design, Fabrication and Inspection to Assess the Fitness for Purpose of welded Structures”, (1989)
2) British Standard Inst. PD6493: “Guidance on Some Methods for the Derivation of Acceptance Levels for Defect in Fusion welded Joints”, (1980)
3) British Standard Inst.: “Draft Published Documents for Guidance on Some Methods for the Derivation of Acceptance Levels for Flaws in Fusion Welded Joints (Revision of PD6493)”, (1989)
4) I. Milne et al.: “Assessment of the Integrity of Structures Containing Defects”, CEGB Report R/H/R 6-Rev. 3, (1986)