Repères - N°48 / March 2021 - The IRSN magazine - 14

© Célia Goumard/IRSN Media Library
© Contributors to OpenStreatMap

EMERGENCY

Relocation perimeter

Estimation of post-accident zoning during an exercise
in Chinon (Indre-et-Loire department) in December 2020.

IRSN's Emergency Center (Centre technique de crise/CTC),
located in Fontenay-aux-Roses (Hauts-de-Seine department),
was mobilized for a national drill.

Emergency management and recovery

Defining new zoning

Implementing consumption bans starting from the emergency phase, improving calculation
tools that predict the atmospheric dispersion of contaminants... Emergency management
is changing, drawing on the lessons learned from Fukushima Daiichi. The goal: better protect
the population in the event of radioactive releases.

" W

e are at a turning point, "
Philippe Dubiau, Executive
Director for emergency preparedness and response at IRSN affirmed
as he described the development of the
post-accident (PA) doctrine developed by
the CODIRPA1 chaired by the French
Nuclear Safety Authority (ASN). And with
good reason, since the new version
expected in 2021 will finally incorporate

feedback from Fukushima Daiichi. In this
updated version, an important provision
has been added to better protect the population. Some measures hitherto reserved
for the post-accident phase will be taken
earlier. Making recommendations on what
is and is not possible to consume cannot
wait until the releases have stopped, as has
been the case up to now.
The 2012 doctrine was published too early
on to assimilate the lessons learned from managing the accident in
Japan. In it, releases are
assumed to continue for
one to three days, as was
Three questions
case for Chernobyl.
for Patricia Dupuy the
However, in Japan, they
on IRSN's
lasted for several weeks.
Emergency Center " When releases continue
irsn.fr/R48-EN
for a long period of time,
action needs to be taken

WEBMAGAZINE

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Page 14 - Repères No. 48 - March 2021

immediately. Otherwise, it poses population
exposure problems-linked to the consumption of contaminated foodstuffs-and economic issues relating to the conditions of
marketing products, " explained Damien
Didier, specialist in modeling radioactivity
transfers in the environment.
At IRSN, this difference entails operational
changes, as from the emergency phase, its
experts must assess foodstuff consumption
and marketing issues.

Changes to zoning

Zoning is based on modeling future population exposure and food chain contamination. The radiological emergency
management platform 2, C 3X, is used,
which " combines data from Météo France,
the national meteorological service, and
that of radioactive releases. It simulates
the  transport of contamination in the
atmosphere and assesses the doses likely



https://www.irsn.fr/R48-EN http://www.irsn.fr/R48

Repères - N°48 / March 2021 - The IRSN magazine

Table of Contents for the Digital Edition of Repères - N°48 / March 2021 - The IRSN magazine

Cover
Contents
Editorial
JAPAN 2011 - The accident at Fukushima Daiichi: What happened?
JAPAN 2021 - Ten years later: What is the state of affairs?
SAFETY - Extreme risks: Enhanced protection nuclear facilities
Station blackout diesel generator: Assessments made during design
Severe accidents: Ultimate heat sink performance
Tricastin nuclear power plant: Dike reinforcements follow assessment
Research: Innovative materials
EMERGENCY - Emergency management and recovery: Defining new zoning
HEALTH - Population protection: What progress has been made in ten years?
ENVIRONMENT - Environmental contamination: Models are progressing
IRSN - 2011-2021: IRSN’s actions
Repères - N°48 / March 2021 - The IRSN magazine - Cover
Repères - N°48 / March 2021 - The IRSN magazine - Contents
Repères - N°48 / March 2021 - The IRSN magazine - Editorial
Repères - N°48 / March 2021 - The IRSN magazine - JAPAN 2011 - The accident at Fukushima Daiichi: What happened?
Repères - N°48 / March 2021 - The IRSN magazine - 5
Repères - N°48 / March 2021 - The IRSN magazine - JAPAN 2021 - Ten years later: What is the state of affairs?
Repères - N°48 / March 2021 - The IRSN magazine - 7
Repères - N°48 / March 2021 - The IRSN magazine - SAFETY - Extreme risks: Enhanced protection nuclear facilities
Repères - N°48 / March 2021 - The IRSN magazine - 9
Repères - N°48 / March 2021 - The IRSN magazine - Station blackout diesel generator: Assessments made during design
Repères - N°48 / March 2021 - The IRSN magazine - Tricastin nuclear power plant: Dike reinforcements follow assessment
Repères - N°48 / March 2021 - The IRSN magazine - 12
Repères - N°48 / March 2021 - The IRSN magazine - Research: Innovative materials
Repères - N°48 / March 2021 - The IRSN magazine - EMERGENCY - Emergency management and recovery: Defining new zoning
Repères - N°48 / March 2021 - The IRSN magazine - 15
Repères - N°48 / March 2021 - The IRSN magazine - 16
Repères - N°48 / March 2021 - The IRSN magazine - 17
Repères - N°48 / March 2021 - The IRSN magazine - HEALTH - Population protection: What progress has been made in ten years?
Repères - N°48 / March 2021 - The IRSN magazine - 19
Repères - N°48 / March 2021 - The IRSN magazine - ENVIRONMENT - Environmental contamination: Models are progressing
Repères - N°48 / March 2021 - The IRSN magazine - 21
Repères - N°48 / March 2021 - The IRSN magazine - IRSN - 2011-2021: IRSN’s actions
Repères - N°48 / March 2021 - The IRSN magazine - 23
Repères - N°48 / March 2021 - The IRSN magazine - 24
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