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Defining a List of Accidents to be Considered as a First Step of Forging Effective Level 4 of Defense-in Depth

Abstract

Russian national regulatory documents require consideration of beyond design basis accidents (BDBAs) while organizing defence-in-depth for nuclear power plants. Consideration of BDBAs in plant design analysis forms the basis for development accident prevention and mitigation strategies. Since sheer quantity of possible beyond design basis accidents is limitless, we face a necessity of working out selection criteria for choosing scenarios of such accidents to be taken into consideration while assessing adequacy of Level 4 of Defence-in-Depth for NPPs. This paper presents possible algorithm for defining a list of beyond design basis accidents that are to be taken into account for NPPs. Developing such a list is to include examination of the following criteria: a) Representativity of set of scenarios covered by the list (representativity to be assessed from the point of view of organizing emergency response actions); b) Cumulative occurrence probability of the scenarios not covered by the list (this probability should be low); and c) Necessity to cover scenarios recommended by current international state-of the art practices. (author)
Authors:
Lankin, M., E-mail: lankin@secnrs.ru [1] 
  1. Scientific and Engineering Center for Nuclear and Radiation Safety, Moscow (Russian Federation)
Publication Date:
Oct 15, 2014
Product Type:
Conference
Report Number:
IAEA-TECDOC-CD-1749
Resource Relation:
Conference: 5. International Conference on Topical Issues in Nuclear Installation Safety: Defence in Depth - Advances and Challenges for Nuclear Installation Safety, Vienna (Austria), 21-24 Oct 2013; Other Information: 7 refs., 2 tabs., 3 figs.; Related Information: In: International Conference on Topical Issues in Nuclear Installation Safety: Defence in Depth — Advances and Challenges for Nuclear Installation Safety. Proceedings of an International Conference held in Vienna, Austria, 21-24 October 2013| 353 p.
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; ALGORITHMS; DESIGN BASIS ACCIDENTS; MITIGATION; NUCLEAR POWER PLANTS; PROBABILITY; REACTOR ACCIDENTS; REGULATORY GUIDES
OSTI ID:
22318535
Research Organizations:
International Atomic Energy Agency, Safety Assessment Section, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ISBN 978-92-0-158214-0; ISSN 1684-2073; TRN: XA14M7051024732
Availability:
Available from INIS in electronic form. Also available on-line: http://www-pub.iaea.org/MTCD/publications/PDF/TE-1749_CD_web.pdf and on 1 CD-ROM from IAEA, Marketing and Sales Unit, Publishing Section, E-mail: sales.publications@iaea.org; Web site: http://www.iaea.org/books
Submitting Site:
INIS
Size:
page(s) 214-222
Announcement Date:
Mar 24, 2015

Citation Formats

Lankin, M., E-mail: lankin@secnrs.ru. Defining a List of Accidents to be Considered as a First Step of Forging Effective Level 4 of Defense-in Depth. IAEA: N. p., 2014. Web.
Lankin, M., E-mail: lankin@secnrs.ru. Defining a List of Accidents to be Considered as a First Step of Forging Effective Level 4 of Defense-in Depth. IAEA.
Lankin, M., E-mail: lankin@secnrs.ru. 2014. "Defining a List of Accidents to be Considered as a First Step of Forging Effective Level 4 of Defense-in Depth." IAEA.
@misc{etde_22318535,
title = {Defining a List of Accidents to be Considered as a First Step of Forging Effective Level 4 of Defense-in Depth}
author = {Lankin, M., E-mail: lankin@secnrs.ru}
abstractNote = {Russian national regulatory documents require consideration of beyond design basis accidents (BDBAs) while organizing defence-in-depth for nuclear power plants. Consideration of BDBAs in plant design analysis forms the basis for development accident prevention and mitigation strategies. Since sheer quantity of possible beyond design basis accidents is limitless, we face a necessity of working out selection criteria for choosing scenarios of such accidents to be taken into consideration while assessing adequacy of Level 4 of Defence-in-Depth for NPPs. This paper presents possible algorithm for defining a list of beyond design basis accidents that are to be taken into account for NPPs. Developing such a list is to include examination of the following criteria: a) Representativity of set of scenarios covered by the list (representativity to be assessed from the point of view of organizing emergency response actions); b) Cumulative occurrence probability of the scenarios not covered by the list (this probability should be low); and c) Necessity to cover scenarios recommended by current international state-of the art practices. (author)}
place = {IAEA}
year = {2014}
month = {Oct}
}