Safety analysis in the LBE-Cooled XADS plant through an integrated use of HAZOP, FAULT TREE and thermalhydraulic transient analyses
A detailed description of possible accidental scenarios, with their frequency of occurrence and their consequences, taking into account both internal and external causes that might contribute to them, can be attained by using the most important risk analysis methodologies (HAZard and OPerability studies, HAZOP; Event Tree, ET; Fault Tree, FT; etc.). As it is known, the Fault Tree methodology is aimed at the evaluation of the frequency of an undesired accidental event (Top Event, TE), and is used to describe this one as a combination of primary events identified, for example, by a HAZOP analysis . However, the classic HAZOP analysis, while allowing to perform an exhaustive study of the examined plant process, generally doesn’t permit to reconstruct the sequences that might bring the plant to the identified accidental events .
KeywordsFault Tree Secondary Coolant Primary Coolant Analyse Fault Tree Secondary Loop
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- 1.Center for chemical process safety of the America Institute of Chemical Engineers. Guidelines for Hazard Evaluation Procedures, Second Edition with worked exampleGoogle Scholar
- 2.M. Demichela, L. Marmo, N. Piccinini. Recursive operability analysis of complex plant with multiple protection devices. Reliability Engineering and System Safety, 2002Google Scholar
- 3.F. Carminati, R. Klapisch, J.P. Revol, Ch. Roche et al. An Energy Amplifier for cleaner and inexhaustible nuclear energy production driver by a particle beam accelerator. European Organization for Nuclear Research, CERN/AI/93-47 (ET), Geneva, 1 Novembre 1993Google Scholar
- 4.L. Barucca, L. Mansani. Identification and categorization of Design Basis Accidents and Acceptance Criteria. Tcnical Report, Ansaldo Nucleare, ADS 1 TRIX 0249Google Scholar
- 5.RELAP5/MOD188.8.131.52β Code Manual. Idaho National Engineering Laboratory, NUREG/CR-5535, INEL-95/0174, Vol.1-5, 1991Google Scholar
- 6.STARS Study User Guide, 1990-1995, Microsoft Corp. Work supported by the italian Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR); Funds: Progetti di Rilevante Interesse Nazionale (PRIN), anno 2002.Google Scholar