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2.1.4 The gas-cooled reactors
These first-generation reactors functioned with natural
uranium as the fuel and graphite as the moderator. They
were cooled by gas. The last reactor of this type to be shut
down was Bugey 1 in 1994.
EDF changed decommissioning strategy in 2001 by
switching from a deferred dismantling to an immediate
dismantling strategy. However, essentially further to the
difficultiesAndra encountered in creating a disposal facility
for theLow-Level Long-Lived (LL-LL)waste, the time frames
given in the EDF’s decommissioning strategy file, which
was updated in2013, were pushedbackby almost 20years
with respect those given in the 2001 file. ASN is examining
this file and will adopt a position on the acceptability of
EDF’s proposed strategy for decommissioning the gas-
cooled reactors (see point 2.1.1).
Moreover, a file concerning the seismic behaviour of the
gas-cooled reactor vessels was submitted to ASN by EDF
jointly with the update of the reactor decommissioning
strategy in 2013. This file is currently being examined.
Bugey 1 reactor
Under EDF’s current decommissioning strategy, this reactor
is the first gas-cooledreactor that shouldbedecommissioned
(first-off). Complete decommissioning of the installation,
for which final shutdown became effective in 1994, was
authorisedbyDecree of 18thNovember 2008. ASNset the
prescriptions and limits concerning the Bugeynuclear site’s
water intake and effluent discharge limits in resolutions
of 15th July 2014. The renewal of the prescriptions was
necessarymore particularly to integrate the Bugey1 reactor
decommissioning operations.
Lastly, inorder to implement thework to extract operating
waste from the reactor pressure vessel, planned in 2016,
EDF submitted a safety file to ASN in 2014, and this file
is currently being examined.
Brennilis (EDF)
BNI 162
- EL4-D
La Hague (Areva NC)
BNI 33
- Spent fuel reprocessing plant (UP2)
BNI 38
- STE2
BNI 47
- ÉLAN IIB La Hague
BNI 80
- HAO (High-Activity Oxide)
Cadarache (CEA)
BNI 25
- Rapsodie
BNI 32
-
ATPu
BNI 37B -
Effluent Treatment Station (STE)
BNI 52
- ATUE
BNI 54
- LPC
BNI 56 -
Radioactive waste interim storage area
BNI 92
- Phébus
Chinon (EDF)
BNI 94
- Irradiated Materials Facility (AMI)
BNI 133
- Chinon A1D
BNI 153
- Chinon A2D
BNI 161
- Chinon A3D
Fontenay-aux-Roses (CEA)
BNI 165
- Procédé
BNI 166
- Support
Saclay (CEA)
BNI 18
- Ulysse
BNI 40
- Osiris
*
BNI 49
- High-Activity Laboratory (LHA)
Saint-Laurent-des-Eaux (EDF)
BNI 46
- Saint-Laurent-des-Eaux A1 et A2
Marcoule (CEA)
BNI 71
- Phénix
Chooz (EDF)
BNI 163
- Chooz A
Tricastin (Areva NC)
BNI 105
- Comurhex
Tricastin (Eurodif Production)
BNI 93
- Eurodif
Bugey (EDF)
BNI 45
- Bugey 1
Creys-Malville (EDF)
BNI 91
- Superphénix
Veurey-Voroize
(SICN, Areva Group)
BNI 65 et 90
SICN plant
Grenoble (CEA)
BNI 36
- STED
BNI 61
- LAMA
BNI 79
- Decay interim storage
facility
INSTALLATIONS
definitively shut down or in the process of decommissioning as at 31st December 2015
* CEA carried out the shutdown of the Osiris reactor (Saclay) in december 2015
(see box chapter 14).
465
CHAPTER 15:
SAFE DECOMMISSIONING OF BASIC NUCLEAR INSTALLATIONS
ASN report on the state of nuclear safety and radiation protection in France in 2015