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processes which help to maintain the conformity of the
installationswith their design, construction andoperating
baseline requirements.
Analysis of significant events statistics
In accordance with the rules concerning the notification
of significant events (see point 3.3 of chapter 4), EDF
notified586 significant safety events in2015, 109 radiation
protection events and 79 environmental protection events.
Graph 4 shows how the number of significant events
notified by EDF and classified on the INES scale has
evolved since 2008.
Graph 5 shows the trends in the number of significant
events per area concerned by notification since 2008:
Significant Safety Events (ESS), Significant Radiation
protection Events (ESR) and Significant Environmental
Events (ESE).
GRAPH 5:
Trend in the number of significant events per domain in EDF nuclear power plants from 2008 to 2015
2013
2014
2015
2009
2008
2012
2011
2010
628
109
96
90
114
120
116
91
699
622
639
689
640
586
112
86
93
93
115
100
100
712
109
79
0
100
200
300
400
500
600
700
800
Significant
Safety Events
Significant
Radiation protection
Events
Significant
Environmental Events
Events off the INES scale are also taken into account.
GRAPH 6:
Liquid radioactive discharges for the NPPs in 2015
Blayais/2
Bugey/2
Chinon/2
Cruas-Meysse/2
Dampierre-en-Burly/2
Fessenheim
Gravelines/3
Saint-Laurent-des-Eaux
Tricastin/2
Belleville-sur-Loire
Cattenom/2
Flamanville
Golfech
Nogent-sur-Seine
Paluel/2
Penly
Saint-Alban
Chooz
Civaux
0
20
40
60
80
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
Non-Tritium
(GBq)
Tritium (TBq)
Activity discharged (TBq)
Activity discharged (GBq)
As there can be a different number of reactors on each site, the results are given “per pair of reactors”, to enable a comparison to be made from one site to
another. This for example entails:
• keeping the results as-are for the Golfech site, which has two reactors;
• dividing by two those of Chinon, which has four reactors (Chinon/2);
• dividing by three those of Gravelines, which has six reactors (Gravelines/3).
408
CHAPTER 12:
EDF NUCLEAR POWER PLANTS (NPPs)
ASN report on the state of nuclear safety and radiation protection in France in 2015