Detection and repair of a crack in a BWR feed water nozzle safe end weld : Pers-Anderson, E.-B. Proceedings of the 10th International Conference on NDE in the Nuclear and Pressure Vessel Industries, Glasgow (Scotland), 11–14 Jun. 1990. pp. 271–275. Edited by M.J. Whittle, J.E. Doherty and K. Iida. ASM International, (1990)
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 196 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0963-8695
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✦ Synopsis
ISG2ANb microalloy steel 30 mm thick. Metallographic examination showed that the hardness of the heat affected zone is 460 HV and certain areas contain a martensitic microstructure. The effect of possible undetected defects on the service characteristics of containers was determined after removing cracks. Crack opening displacement tests were carried out on butt welded joints and critical values of theta were determined for the parent metal, weld metal and heat affected zon$. The parameters of permissible defects in these areas were calculated and the dimensions of surface plane and internal defects determined. The crack growth rate during cyclic loading of the container is calculated.