155 / 536
ENVIRONMENT
MONITORED
OR TYPE OF
INSPECTION
CATTENOM NPP
(RESOLUTION 2014-DC-0415
OF 16TH JANUARY 2014)
AREVA DE LA HAGUE FACILITY
(ORDER OF 10TH JANUARY 2003 AMENDED
BY THE ORDER OF 8TH JANUARY 2007)
Air at ground level
•
4 continuous sampling stations for atmospheric dust on
fixed filter with daily measurement of total
β
activity (
β
G
)
γ
spectrometry if
β
G
> 2 mBq/m
3
Monthly
γ
spectrometry on grouped filters per station
•
1 continuous sampling station downwind of the prevailing
winds, with weekly measurement of atmospheric
3
H
•
5 stations continuously sampling atmospheric dust on a fixed filter, with daily measurements of the total
α
activity
(
α
G
) and total
β
activity (
β
G
).
γ
spectrometry if
α
G
ou
β
G
> 1 mBq/m
3
Monthly
α
spectrometry (Pu) on grouped filters per station
•
5 continuous sampling stations for halogens on specific adsorbent with weekly
γ
spectrometry to measure iodines
•
5 continuous sampling stations with weekly measurement of atmospheric
3
H
•
5 continuous sampling stations with bi-monthly measurement of atmospheric
14
C
•
5 continuous measurement stations for
85
Kr activity in the air
Ambient
γ
radiation
•
Continuous measurement with recording:
- 4 detectors at 1 km
- 10 detectors on the site boundary
- 4 detectors at 5 km
•
5 detectors with continuous measurement and recording
•
11 detectors with continuous measurement at the site fencing
Rain
1 continuous sampling station under the prevailing winds
with bi-monthly measurement of
β
G
and
3
H
•
2 continuous sampling stations including one under the prevailing winds with weekly measurement of
α
G
,
β
G
and
3
H.
γ
spectrometry if significant
α
G
or
β
G
Liquid discharge
receiving
•
Sampling from the river upstream of the discharge point and
in the good mixing area for each discharge
Measurement of
β
G
, potassium (K)
*
and
3
H
•
Continuous sampling in the river at the good mixing point
Measurement of
3
H (daily average mixture)
•
Annual samples from aquatic sediments, fauna and flora
upstream and downstream of the discharge point with
γ
spectrometry, measurement of free
3
H and, in fish,
organically bound
14
C and
3
H
•
Periodic sampling from a stream and in the dam adjoining
the site with measurements of
β
G
, K,
3
H
•
Daily seawater samples from 2 points on the coast, with daily measurements (
γ
spectrometry,
3
H) at one of these
points and for each of the 2 points,
α
and
γ
spectrometry and
β
G
, K,
3
H and
90
Sr measurements
•
Quarterly seawater samples at 3 points offshore with
γ
spectrometry and
β
G
, K,
3
H measurements
•
Quarterly samples of beach sand, seaweed and limpets at 13 points with
γ
spectrometry +
14
C measurements
and
α
spectrometry for the seaweed and limpets at 6 points
•
Sampling of fish, crustaceans, shellfish and molluscs in 3 coastal zones of the Cotentin with
α
and
γ
spectrometry
and
14
C measurement
•
Quarterly sampling of offshore marine sediments at 8 points with
α
and
γ
spectrometry and
90
Sr measurement
•
Weekly to six-monthly sampling of water of 19 streams adjacent to the site, with
α
G
,
β
G
, K and
3
H measurements
•
Quarterly sampling of sediments from the 4 main streams adjacent to the site, with
γ
and
α
spectrometry
•
Quarterly sampling of aquatic plants from 3 streams adjacent to the site, with
γ
spectrometry and
3
H measurement
Groundwater
•
Monthly sampling at 4 points,
bi-monthly at 1 point and
quarterly at 4 points with
β
G
, K and
3
H measurement
•
5 sampling points (monthly check) with
α
G
,
β
G
, du K and
3
H measurements
Water for
consumption
•
Annual sampling of water intended for human consumption,
with
β
G
, K and
3
H measurements
•
Periodic sampling of water intended for human consumption at 15 points, with
α
G
,
β
G
, K and
3
H measurement
Soil
•
1 annual sample of topsoil with
γ
spectrometry
•
Quarterly samples at 7 points with
γ
spectrometry and
14
C measurement
Vegetation
•
2 grass sampling points, including one under the prevailing
winds, monthly
γ
spectrometry and quarterly
14
C and C
measurements.
•
Annual campaign for the main agricultural crops,
with
γ
spectrometry,
3
H and
14
C measurements
•
Monthly grass sampling at 5 points and quarterly at 5 other points with
γ
spectrometry and
3
H and
14
C measurements
Annual
α
spectrometry at each point
•
Annual campaign for the main agricultural crops, with
α
and
γ
spectrometry,
3
H,
14
C and
90
Sr measurements
Milk
•
2 sampling points, situated 0 to 10 km from the facility,
including one under the prevailing winds, with monthly
γ
spectrometry, quarterly
14
C measurement and annual
90
Sr
and
3
H measurement
•
5 sampling points (monthly check) with
γ
spectrometry, K,
3
H,
14
C and
20
Sr measurement
TABLE 8:
Example of radiological monitoring of the environment around BNIs
α
G
= total
α
;
β
G
= total
β
*
Measurements of total concentration of potassium and by spectrometry for
40
K
155
CHAPTER 04:
REGULATION OF NUCLEAR ACTIVITIES AND EXPOSURE TO IONISING RADIATION
ASN report on the state of nuclear safety and radiation protection in France in 2015