発電用原子炉施設の工事計画認可の概要

2007 ISOE Asian ALARA Symposium
OCCUPATIONAL EXPOSURE
at JAPANESE NUCLEAR
POWER PLANTS in 2006
September 12-14, 2007, Seoul, Korea
Yoshihisa Hayashida
Safety Information Division
Japan Nuclear Energy Safety Organization (JNES)
Nuclear Power Plants in Japan
as of March 31, 2007
In Operation
Under
Construction
On Planning
BWR
PWR
Total
No. of
Units
32
23
55
Output
(MWe)
30,101
19,366
49,467
No. of
Units
1
1
2
Output
(MWe)
1,373
912
2,285
No. of
Units
9
2
11
Output
(MWe)
11,869
3,076
14,945
Nuclear Power Plants in Japan
Shika
志賀 in Operation (PWR 23, BWR 32) as of March 31, 2006
55 Units
Oma
Fugen
ふげん
(
Namie-Odaka
Tomari
(2003
)
(on
a decommissioning
stage
since
年より廃止措置準備中
2003)
Kashiwazaki-kariwa
Higashi Dori
2
Monju (FBR))
TEPCOHigashi Dori
1
Tsuruga
敦賀
2
Mihama
Onagawa
女川
Fukushima
福島第一
Daiichi
7
8
Fukushima
Daini
Oi
Tokai
(On the decommissioning stage since 1998)
Takahama
３
Tokai No. 2
Shimane
Kaminoseki
Hamaoka
Genkai
Sendai
出力規模
Output
scale
50万kW未満
Less than
500,000kW
In operation
Under Construction
Less than
100万kW未満
1,000,000kW
More than
100万kW以上
1,000,000kW
On planning stage
5
Ikat
a
Total 55 Units 49,467MWe
合計
出力
47,122MWe
(PWR53基
23 units,
BWR
32 units )
Trend of Capacity Factor
in Japanese plants
100
90
Capacity Factor (%)
80
70
60
50
40
30
20
Mean
ＢＷＲ
ＰＷＲ
10
0
1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
Fiscal Year
Individual Dose in Fiscal Year 2006
(April 2006 – March 2007)
Plants Units
Persons
mSv
/person
BWR
PWR
32
44,129
1.0
23
22,718
1.1
GCR
1
1,293
0.02
Total
56
66,895
1.0
Trend of Individual Average Dose
in Japanese plants
350
5
IndividualA verage D ose
4
300
N o.of W oker exceeding 20m S v/y
3
200
2
150
100
1
50
0
0
'87 '88 '89 '90 '91 '92 '93 '94 '95 '96 '97 '98 '99 '00 '01 '02 '03 '04 '05 '06
FiscalY ear
P erson
m Sv/person
250
Collective Dose in Fiscal Year 2006
(April 2006 – March 2007)
Plants Units
Person-Sv Person-Sv
/unit
42.43
1.33
BWR
32
PWR
23
24.97
1.09
GCR
Total
1
56
0.03
67.43
0.03
1.23
(LWR)
Trend of BWR Average Collective Dose per
Reactor in Japanese Plants
Exposure
C apacity Factor
100
90
80 (%)
70
60
50
40
30
20
10
0
4
C apacity Factor
Exposure,person-Sv/unit
5
3
2
1
0
'90 '91 '92 '93 '94 '95 '96 '97 '98 '99 '00 '01 '02 '03 '04 '05 '06
FiscalY ear
Trend of PWR Average Collective Dose per
Reactor in Japanese Plants
Exposure
C apacity Factor
5
100
80 (%)
4
70
3
60
50
2
40
30
1
20
10
0
0
'90 '91 '92 '93 '94 '95 '96 '97 '98 '99 '00 '01 '02 '03 '04 '05 '06
FiscalYear
C apacity Factor
Expsure,P erson-Sv/unit
90
Trend of Maintenance Exposure
at Japanese BWRs
Plant Name
Onagawa-1
Onagawa-2
Onagawa-3
Higashidori
Fukushima No.1-1
Fukushima No.1-2
Fukushima No.1-3
Fukushima No.1-4
Fukushima No.1-5
Fukushima No.1-6
Fukushima No.2-1
Fukushima No.2-2
Fukushima No.2-3
Fukushima No.2-4
Kashiwazaki・K-1
Kashiwazaki・K-2
Kashiwazaki・K-3
Kashiwazaki・K-4
Kashiwazaki・K-5
Kashiwazaki・K-6
Kashiwazaki・K-7
Hamaoka-1
Hamaoka-2
Hamaoka-3
Hamaoka-4
Hamaoka-5
Shika-1
Shika-2
Shimane-1
Shimane-2
Tokai No.2
Tsuruga-1
FY 1996 FY 1997 FY 1998 FY 1999 FY 2000 FY 2001 FY 2002 FY 2003 FY 2004 FY 2005 FY 2006
1.4
0.8
0.7
0.6
4.13
1.07
0.2
0.3
0.4
0.5
0.95
1.42
0.62
0.61
0.2
0.3
0.32
8.57
1.33
2.0
2.7
10.8
15.5
4.43
1.18
4.1
16.9
5.4
1.65
8.71
7.94
2.22
2.6
6.34
1.6
5.9
1.94
11.15
5.56
4.94
2.0
12.72
1.6
5.63
9.43
2.97
3.6
2.4
0.8
2.8
4.4
7.19
4.7
1.9
0.8
2.05
0.6
1.4
1.79
3.71
1.2
0.9
1.4
0.6
1.7
1.1
2.98
1.1
1.2
0.8
1.8
1.3
3.19
3.31
1.67
0.7
0.6
0.8
0.6
3.65
0.76
1.0
1.2
1.2
1.9
5.61
4.09
1.68
0.6
0.8
1.91
0.48
4.07
0.91
0.8
1.7
0.95
1.7
3.57
1.47
0.56
0.3
0.5
0.5
0.58
2.0
1.75
1.97
1.85
0.9
2.16
0.7
1.2
0.64
2.99
0.78
0.3
0.3
0.3
1.2
0.8
1.07
2.27
0.2
0.3
0.4
1.3
0.64
0.81
0.8
2.7
2.4
2.98
2.59
3.89
2.5
9.23
1.5
1.93
1.8
1.1
2.0
1.9
4.98
5.08
2.9
3.7
0.8
2.4
1.12
0.7
4.31
1.55
1.48
0.2
0.9
1.6
1.8
0.9
1.1
3.03
1.1
1.31
1.1
0.5
2.1
2.2
< 1.5
1.5 3.0 > 4.5
1.1
0.98
0.4
3.7
3.51
man.Sv
3.0 man.Sv
4.5 man.Sv
man.Sv
2.81
9.92
0.3
0.7
5.94
5.01
0.9
0.49
2.98
7.33
2.21
1.1
2.43
1.4
3.0
1.4
3.36
1.5
1.3
0.59
5.56
1.47
Trend of Maintenance Exposure
at Japanese PWRs
name
Tomari-1
Tomari-2
Mihama-1
Mihama-2
Mihama-3
Takahama-1
Takahama-2
Takahama-3
Takahama-4
Ohi-1
Ohi-2
Ohi-3
Ohi-4
Ikata-1
Ikata-2
Ikata-3
Genkai-1
Genkai-2
Genkai-3
Genkai-4
Sendai-1
Sendai-2
Truruga-2
FY 1996 FY 1997 FY 1998 FY 1999 FY 2000 FY 2001 FY 2002 FY 2003 FY 2004 FY 2005 FY 2006
0.59
0.46
0.54
0.53
0.6
0.74
0.83
0.45
0.46
0.4
0.38
0.52
0.57
0.51
0.59
0.5
0.59
1.71
1.61
2.01
1.44
2.43
0.98
0.78
1.7
1.39
1.02
2.59
0.54
0.75
0.41
0.88
2.54
1.31
1.08
1.31
1.33
0.71
1.07
1.08
1.86
1.09
1.28
1.43
0.97
0.55
0.62
1.28
1.16
1.18
1.29
0.84
1.19
0.85
1.22
1.07
0.81
1.29
2.35
1.22
1.95
1.38
1.22
1.2
0.79
1.43
1.03
1.52
1.05
1.7
1.13
3.4
3.52
3.78
2.41
1.95
1.75
1.72
2.19
4.94
4.42
1.92
1.60
1.5
1.72
1.68
2.1
0.74
0.62
0.7
0.59
0.88
1.66
2.92
0.99
2.8
0.53
0.46
0.57
0.7
0.58
0.82
0.56
0.98
1.0
1.48
1.2
2.2
1.69
1.0
1.38
0.86
1.15
1.26
0.92
1.29
2.66
1.62
1.11
2.28
0.68
0.3
0.3
0.53
0.71
0.68
1.3
1.1
2.3
1.32
1.39
1.37
1.56
0.8
0.87
0.85
0.67
1.76
1.69
1.67
2.09
1.2
0.86
0.71
0.56
0.42
0.43
0.61
1.05
1.22
1.66
1.39
0.45
0.61
0.58
1.31
1.29
1.12
1.1
1.14
1.00
0.95
1.15
1.33
1.59
2.08
1.41
1.22
0.89
1.12
1.12
1.22
1.76
1.96
1.05
0.94
0.84
0.68
1.68
0.86
1.29
3.58
1.22
<
1
2
>
1
3
man.Sv
2 man.Sv
3 man.Sv
man.Sv
Collective Dose During Outage vs.
Year of Commercial Operation Started (BWR:
1996 - 2006)
18
BW R3 & BW R2
BW R4
BW R5
ABW R
16
P erson.Sv/O utage
14
12
10
8
6
4
2
0
1965
1970
1975
1980
1985
1990
1995
2000
FiscalYear of C om m ercialO peration S tarted
2005
Collective Dose During Outage vs.
Year of Commercial Operation Started (PWR:
1996 - 2006)
6
2 LO O P
3 LO O P
4 LO O P
P erson.Sv/O utage
5
4
3
2
1
0
1965
1970
1975
1980
1985
1990
1995
2000
Fiscal Y ear of C om m ercial O peration S tarted
2005
BWR Average Collective Dose per Reactor
by Country
3.5
3.0
JA P A N
P erson-Sv/unit
2.5
U SA
2.0
G ER M A N Y
1.5
S W ED EN
FIN LA N D
1.0
S W IT ZER LA N D
0.5
0.0
95
96
97
98
99
00 01 02
FiscalY ear
03
04
05
06
PWR Average Collective Dose per Reactor
by Country
2.5
2
P erson-Sv/unit
JA P A N
U SA
1.5
G EA M A N Y
FR A N C E
1
B ELG IU M
K O R EA
0.5
0
95
96
97
98
99
00 01 02
Fiscal Y ear
03
04
05
06
From 2003 to 2005
er
i
H a ck1
D u t ,2
an ch
O e A 1,2
ys
te rno
ld
r
S u F C re
sq itzp ek
ue at
ha ric
n
k
G r na
an 1,2
d
G
C l ulf
in
to
Fe n
rm
M
B r ont i2
un ic
H o sw ello
pe ick
C o n C 1,2
r
P e ope eek
ac r S
1
t
h
V e B o atio
n
tt
rm
on om
t Y 2,3
D r ank
es
e
de e
n
2,
3
R i P il
gr
ve
i
m
rB
e
C o L a nd
Sa
1
lu
l
m
bi le 1
a(
Ni
,2
W
n
NP
Br e M
ow
il
2)
n's e P
t
.1
Fe
,2
r
Q
ua ry 1
d
C i ,2,3
tie
s
1,
2
Pe
rry
Li
m
1.5
1
2.5
2
3
M IN :0.81
M A X:3.66
4
From FY2004 to FY2006
Fukushim adaiicni
Tokaidaini
3.5
Tsuruga
O nagaw a
Shika
Kashiw azakikariw
Fukushim adain a
H am aoka
Shim an
H igashidori
P erson-Sv/U nit
BWR Three Year Rolling Average by Plant in
USA and Japan
M IN :0.81
M A X:3.66
0.5
0
U SA
Japan
From 2003 to 2005
1,2
Wate
rford
3
Turk
ey P
t. 3,4
Crys
tal R
iver 3
Beav
er Va
lley 1
,2
Ocon
ee 1
,2,3
South
Texa
s 1,2
Diab
lo Ca
nyon
1,2
Sale
m 1,2
Surry
1,2
Calv
ert C
liff 1,2
San
Onofr
e 2,3
Sequ
oyah
1,2
Watt
s Ba
r1
Mills
tone
2,3
Arka
nsas
1,2
Calla
way
St. L
ucie
Ft. C
alhou
n
Palis
ades
Davis
-Bes
se
Senda
Tsuruga
G enka
i
Ikata
1.5
TMI
M iham a
Tom ari
1
Harr
is
Farle
y 1,2
Prair
ie Isla
nd 1
,2
Sum
mer
1
Ginn
a
Vogtl
e 1,2
Pt. B
each
1,2
Kew
aune
e
India
n Pt.
3
Byro
n 1,2
North
Anna
Robin
son 2
Wolf
Gree
k1
Pal V
erde
1,2,3
Cata
wba
1,2
Braid
wood
1,2
India
n Pt.
2
Com
anch
e Pk
1,2
McG
uire
1,2
O hi
Turuga
2
Cook
0
Seab
rook
P erson-Sv/U nit
PWR Three Year Rolling Average by Plant in
USA and Japan
2.5
From FY2004 to FY2006
M IN :0.51
M A X :1.84
M IN :0.43
M A X :2.1
0.5
U SA
Japan
Dose Rate at PLR Piping
in Japanese BWR and US BWR
>4.0
3.5-4.0
3.0-3.5
9
2.5-3.0
8
2.0-2.5
3 4 5 6 7
O utage N um ber
1.5-2.0
2
Japan
USA
1.0-1.5
1
Median:1.55 mSv/h
0.5-1.0
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
<0.5
12
10
8
6
4
2
0
U S P lant(Ferm i-2)
Japan(H am aoka-3)
Number of plants
m Sv/h
Median:0.89 mSv/h
Japan
mSv/h at PLR Piping
Japan:2000.12-2003
USA :2005.1
Operation Period and Maintenance Period
by Country from 1996 to 2005
Operating period (days)
0
100
200
Outage (days)
0
20
Capacity Factor　９０％
40
Capacity Factor ８０％
60
80
USA
Finland
100
Korea
Japan
120
Switzerland
Belgium
140
300
400
500
600
700
Further Exposure reduction
Japanese utilities are continuing the
approach for further exposure reduction.
 Regulatory side will encourages and
support their activity.
 The effort of the improvement on
inspection way for nuclear facilities is
continued in Japan.

Summary




BWR average collective dose per reactor for
2006 decreased 3 years in a row, and the value
of 1.33 person-Sv is the lowest in the past.
Average collective dose per reactor for PWRs
shows a stable trend in general in around 1
person-Sv.
Relatively much maintenance work is
performed in Japanese plants.
It is expected that the improvement of
inspection way and utility’s ALARA activity
will promote to decrease the exposure in
Japanese plants.
Thank you for your
attention !!

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