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Takaya, Shigeru; Asayama, Tai; Yada, Hiroki; Roberts, A. T.*; Schaaf, F.*
Journal of Pressure Vessel Technology, 142(2), p.021601_1 - 021601_5, 2020/04
Times Cited Count:1 Percentile:6.41(Engineering, Mechanical)Inservice inspection rules for liquid-metal cooled plants were historically provided by Section XI, Division 3 of the ASME Boiler and Pressure Vessel Code. However, some parts of the Code remained as being in the course of preparation. Although no major revisions were made to Division 3 since the first issue in 1980, a newly developed and published Code Case N-875, now provides alternative examinations to the methods previously contained in Division 3. The Code Case was developed using the System Based Code concept pursuing rationalization of codes and standards based on reliability targets throughout a plant's service life. In this paper, an overview of the Code Case is presented. The technical foundation to establish the applicability of these alternative examinations as delineated in the Code Case, consists of Stage I and II evaluations with compensating individual considerations. Stage I is a structural integrity evaluation without the contribution of inservice inspections, while Stage II is evaluation of the detectability of a postulated flaw. Not only conventional direct detection methods, but also indirect detection methods are permitted to be employed through the Stage II evaluation. Furthermore, the detailed evaluation procedures are illustrated through the application of the Code Case's evaluation criteria to the primary heat transport piping system of a prototype sodium-cooled fast breeder reactor in Japan, specifically Monju.
Asayama, Tai; Takaya, Shigeru; Morishita, Masaki; Schaaf, F.*
Proceedings of 22nd International Conference on Nuclear Engineering (ICONE-22) (DVD-ROM), 9 Pages, 2014/07
This paper describes the ongoing activities at the Joint Task Group for System Based Code established in 2012 by the Japan Society of Mechanical Engineers (JSME) and the American Society of Mechanical Engineers (ASME) in the ASME Boiler and Pressure Vessel Code Committee. The Joint Task Group aims at developing alternative rules for ASME Boiler and Pressure Vessel Code Section XI Division 3, inservice inspection requirements for liquid metal reactors. The alternative rules will be developed based on the System Based Code concept which was originally proposed in Japan and is being elaborated both in JSME and ASME.
Zegers, R. G. T.*; Van den Berg, A. M.*; Brandenburg. S.*; Fleurot, F. R. R.*; Fujiwara, Mamoru; Guillot, J.*; Hannen, V. M.*; Harakeh, M. N.*; Laurent, H.*; Van der Schaaf, K.*; et al.
Nuclear Physics A, 687(3-4), p.262c - 269c, 2001/05
no abstracts in English
Zegers, R. G. T.; Van den Berg, A. M.*; Brandenburg. S.*; Fleurot, F. R. R.*; Fujiwara, Mamoru; Guillot, J.*; Hannen, V. M.*; Harakeh, M. N.*; Laurent, H.*; Van der Schaaf, K.*; et al.
Physical Review Letters, 84(17), p.3779 - 3782, 2000/04
Times Cited Count:15 Percentile:65.24(Physics, Multidisciplinary)no abstracts in English