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Improvements in Defense in Depth in French Nuclear Power Plants Following Fukushima Accidents

Abstract

The accidents which occurred in the nuclear power plants in Fukushima-Daiichi resulted in a complementary safety assessment (CSA or stress-tests) of all French NPPs to confirm their compliance with their design bases and to evaluate their behaviour beyond it. They have shown that nuclear facilities have a satisfactory level of safety, but it had been decided to significantly improve their robustness to extreme situations, beyond the safety margins they have already. Planned improvements include several parts, where the main ones are the implementation of a hardened safety core (HSC) of key components for the management of extreme situations resulting from a hazard beyond the design and deployment of a nuclear rapid response force (FARN). The hardened safety core aims to avoid massive releases and lasting effects in the environment. It relies on existing or new components designed or verified to hazards with significant margins compared to the design levels of NPP beyond. It also includes provisions allowing crisis management, including crisis centre and communication means. The FARN complements the HSC and the crisis organization to bring from off-site sufficient human and material resources to increase the autonomy of the site. All these improvement contribute to a better defence in depth.  More>>
Authors:
Barbaud, J.; [1]  Pouget-Abadie, X., E-mail: jean.barbaud@edf.fr [2] 
  1. EDF SEPTEN, Villeurbanne Cedex (France)
  2. EDF DIN Headquarters, Saint-Denis (France)
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: 2 refs.; 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; ACCIDENT MANAGEMENT; ENVIRONMENTAL IMPACTS; FISSION PRODUCT RELEASE; FRANCE; FUKUSHIMA ACCIDENT DATA; NUCLEAR POWER PLANTS; REACTOR ACCIDENTS; REACTOR CORES; REACTOR PROTECTION SYSTEMS; RISK ASSESSMENT; SAFETY MARGINS
OSTI ID:
22318520
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: XA14M7036024717
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) 128-135
Announcement Date:
Mar 23, 2015

Citation Formats

Barbaud, J., and Pouget-Abadie, X., E-mail: jean.barbaud@edf.fr. Improvements in Defense in Depth in French Nuclear Power Plants Following Fukushima Accidents. IAEA: N. p., 2014. Web.
Barbaud, J., & Pouget-Abadie, X., E-mail: jean.barbaud@edf.fr. Improvements in Defense in Depth in French Nuclear Power Plants Following Fukushima Accidents. IAEA.
Barbaud, J., and Pouget-Abadie, X., E-mail: jean.barbaud@edf.fr. 2014. "Improvements in Defense in Depth in French Nuclear Power Plants Following Fukushima Accidents." IAEA.
@misc{etde_22318520,
title = {Improvements in Defense in Depth in French Nuclear Power Plants Following Fukushima Accidents}
author = {Barbaud, J., and Pouget-Abadie, X., E-mail: jean.barbaud@edf.fr}
abstractNote = {The accidents which occurred in the nuclear power plants in Fukushima-Daiichi resulted in a complementary safety assessment (CSA or stress-tests) of all French NPPs to confirm their compliance with their design bases and to evaluate their behaviour beyond it. They have shown that nuclear facilities have a satisfactory level of safety, but it had been decided to significantly improve their robustness to extreme situations, beyond the safety margins they have already. Planned improvements include several parts, where the main ones are the implementation of a hardened safety core (HSC) of key components for the management of extreme situations resulting from a hazard beyond the design and deployment of a nuclear rapid response force (FARN). The hardened safety core aims to avoid massive releases and lasting effects in the environment. It relies on existing or new components designed or verified to hazards with significant margins compared to the design levels of NPP beyond. It also includes provisions allowing crisis management, including crisis centre and communication means. The FARN complements the HSC and the crisis organization to bring from off-site sufficient human and material resources to increase the autonomy of the site. All these improvement contribute to a better defence in depth. (author)}
place = {IAEA}
year = {2014}
month = {Oct}
}