Abstract

This paper proposes to solve the issues related to aging management program (AMP) during the decommissioning phase by using risk information. The AMP for the decommissioning plants has not been established while the number of permanently shut down and decommissioned nuclear power plants are increasing in the world. The first issue is the change of the functional importance of the safety systems at the beginning of decommissioning. We propose to evaluate the importance using the probabilistic risk assessment (PRA) model with the change of specification in the decommissioning plant and to determine new importance grade. The second issue is to make the maintenance based on the appropriate risk information. This risk information should be based on the progress of decommissioning, reflected and evaluated in the PRA model, as well as information obtained from maintenance inspections, including the ROP process, and failure experience during routine operation. To address these issues, the maintenance program in decommissioning that uses the evaluation of risk information according to the decommissioning phase is proposed in this paper.

References

1.
McGrath
,
R.
,
Reid
,
R.
, and
Snyder
,
M.
,
2016
, “
EPRI Guidance for Transition From Operations to Decommissioning (NEA-Predec–2016)
,”
International Symposium on Preparation for Decommissioning (PREDEC)
,
Lyon, France, Feb. 16–18, Report No. NEA-PREDEC.
https://www.oecd-nea.org/rwm/wpdd/predec2016/docs/S-1-5___FP_SNYDER.pdf
2.
Takashima
,
R.
,
Naito
,
Y.
,
Kimura
,
H.
, and
Madarame
,
H.
,
2007
, “
Decommissioning and Equipment Replacement of Nuclear Power Plants Under Uncertainty
,”
J. Nucl. Sci. Technol.
,
44
(
11
), pp.
1347
1355
.10.1080/18811248.2007.9711381
3.
AESJ
,
2008
, “
Code on Implementation and Review of Nuclear Power Plant Ageing Management Program
,”
Atomic Energy Society Japan
, No. AESJ-SC-P005:2008, Appendix E.
4.
Kaulard
,
J.
,
2017
, “
Safety and Radiation Protection
,”
Woodhead Publishing Series in Energy, Advances and Innovations in Nuclear Decommissioning
,
Woodhead Publishing
,
Aachen, Germany
, pp.
31
33
. 10.1016/B978-0-08-101122-5.00002-8
5.
IAEA
,
2015
, “
Ageing Management for Nuclear Power Plants: International Generic Ageing Lessons Learned (IGALL)
,” Safety Reports Series No. 82,
International Atomic Energy Agency
,
Vienna, Austria
https://www.iaea.org/publications/13475/ageingmanagement-for-nuclear-power-plants-international-generic-ageing-lessons-learned-igall.
6.
U.S.NRC
,
2010
, “
Generic Aging Lessons Learned (GALL)
,”
United States Nuclear Regulatory Commission
,
Washington, DC
, Report No. NUREG-1801.https://www.nrc.gov/reading-rm/doccollections/nuregs/staff/sr1801/index.html
7.
AESJ
,
2014
, “
The Implementation Standard Concerning the Internal Fire Probabilistic Risk Assessment of Nuclear Power Plants
,”
Atomic Energy Society Japan
,
Tokyo, Japan
, No. AESJ-SC-RK007:2014.
8.
Yoshida
,
T.
,
2011
, “
Behavior of Light Water Reactor Fuel ‘Intended to Understand the Behavior of Fukushima-Daiichi Nuclear Fuel
,”
J. Atomic Society Jpn.
,
53
(
8
), p.
26
.10.3327/jaesjb.53.8_555
9.
AESJ
,
2011
, “
Implementation of Decommissioning of Nuclear Facilities
,”
Atomic Energy Society Japan
,
Tokyo, Japan
, No. AESJ-SC-A3:2011.
You do not currently have access to this content.