Tsuruga 13-14 November 2008 ISOE International ALARA Symposium 1 OCCUPATIONAL EXPOSURE DYNAMICS IN...
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Transcript of Tsuruga 13-14 November 2008 ISOE International ALARA Symposium 1 OCCUPATIONAL EXPOSURE DYNAMICS IN...
Tsuruga 13-14 November 2008
ISOE International ALARA Symposium
1
OCCUPATIONAL EXPOSURE DYNAMICS IN DIFFERENT
TYPES OF RUSSIAN NUCLEAR POWER PLANTS
Dr. Boris Bezrukov Concern Energoatom, RussiaDr. Olga Bezrukova VNIIAES, RussiaDr. Vadim Glasunov VNIIAES, Russia
ВНИИАЭС
Tsuruga 13-14 November 2008
ISOE International ALARA Symposium
2
Beloyarsk NPP
Balakovo NPP
Novovoronezh NPP
Kursk NPP
Kalinin NPP
Kola NPPLeningrad NPP
Smolensk NPP
Bilibino NPP
VVER-1000
VVER-440BN-600EGP-6
RBMK-1000
Volgodonsk NPP
List of the Russian commercial reactors1010 NPPs, 3131 Units, P=2324223242 MW(el)
ВНИИАЭС
Tsuruga 13-14 November 2008
ISOE International ALARA Symposium
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Nowadays, 31 commercial reactors are totally operated in the Russian Federation
- 15 VVER type reactors- 11 RBMK type reactors- 5 custom – built reactors
+ 4 reactors are at the stage of decommissioning
ВНИИАЭС
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ISOE International ALARA Symposium
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All Russian plants centralized management is executed by one
operating utility – Concern Energoatom (till September 2008 – Concern Rosenergoatom)
Concern Energoatom is fully responsible for providing all aspects of operational
safety at Russian NPPs
ВНИИАЭС
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ISOE International ALARA Symposium
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The main task of All-Russian Research Institute for Nuclear Power Plants Operation (VNIIAES), which was
established in 1979, to provide scientific and technical support in the area of NPP operation, based on the development and implementation and methods, aimed at increasing of the plants safety, reliability
and economical efficiency
ВНИИАЭС
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ISOE International ALARA Symposium
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In the Russian Federation, since 01 January 2000, effective dose 100 mSv per five successive years
with the provision that it should not exceed 50 mSv in any single year was determined as the main dose
limit in occupational exposure
Since 1961 until 01 January 2000, the main dose limit in occupational exposure was fixed 50 mSv
of annual equivalent dose in the Soviet union and later in Russia
ВНИИАЭС
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ISOE International ALARA Symposium
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The 1996-1999 transient period of time was specially planned for development and practical implementation of organizational and technical activities to meet the new more strict occupational radiation requirements
ВНИИАЭС
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ISOE International ALARA Symposium
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Comparison of some occupational radiation protection indicators of Russian reactors in 1996 and 2007
ВНИИАЭС
Kind of indicator Reactor type 1996 2007Average annual individual dose of plant personnel and contractors, mSv
VVER 2.0 0.9
RBMK 7.0 2.2
Custom-built 3.9 1.5
All reactors 4.8 1.6
Number of plant personnel and contractors exceeding 20 mSv individual dose, persons
VVER 68 0
RBMK 861 0
Custom-built 37 0
All reactors 966 0
Average annual collective dose per unit, man Sv
VVER 1.7 0.9
RBMK 9.4 3.4
Custom-built 1.3 0.5
All reactors 4.3 1.6
Tsuruga 13-14 November 2008
ISOE International ALARA Symposium
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Average annual individual doses at different types Russian reactors for the years
1994-2007
ВНИИАЭС
0
2
4
6
8
10
12
14
16
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Volgodonsk
Balokovo
Beloyarsk
Kalinin
Kola
Novovoronezh
Average
Leningrad
Smolensk
Bilibino
Kursk
Ave
rage
ann
ual i
ndiv
idua
l do
se, m
Sv
Р
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ISOE International ALARA Symposium
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Distribution of the number of plant personnel and contractors
according to the intervals of the annual individual dose for 2007, in %
ВНИИАЭС
79.8
45.6
65.7
7.0
22.1
12.96.7
18.3
11.16.5
14.010.4
0
10
20
30
40
50
60
70
80
%
less then 1 mSv 1-2 mSv 2-5 mSv 5-20 mSv
VVERRBMKAll reactors
Tsuruga 13-14 November 2008
ISOE International ALARA Symposium
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Evolution of the total number of plant personnel and contractors with the annual
individual dose less than 1 mSv for the years 2000-2007, in % from total
0102030405060708090
2000 2001 2002 2003 2004 2005 2006 2007VVER RBMK All reactors
%
ВНИИАЭС
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ISOE International ALARA Symposium
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Number of plant personnel and contractors with the annual individual dosemore than 20 mSv for the years 1997-2007
ВНИИАЭС
693
291
110
6 417
801827
0000
100200300400500600700800900
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
Num
ber o
f pla
nt p
erso
nnel
and
co
ntra
ctor
s
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ISOE International ALARA Symposium
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Distribution of the number of plant personnel and contractors according to accumulated individual dose for the years 2003-2007
ВНИИАЭС
00.170.631.32
95.9
0
10
20
30
40
50
60
70
80
90
100
<50 50-60 60-70 70-80 80-100 >100Dose intervals, mSv
%
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ISOE International ALARA Symposium
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Average annual collective doses per unit at different types Russian reactors for the years 1994 - 2007
ВНИИАЭС 0
510
1520
25
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007
VolgodonskBalakovo
BeloyarskAverage for all reactors at decommissioning
BilibinoKalinin
KolaNovovoronezh (3 operating reactors)
Average for all operating reactorsAverage for all reactors
LeningradSmolensk
Kursk
Ann
ual c
olle
ctiv
e do
se p
er u
nit,
man
Sv
Рис.2.9
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ISOE International ALARA Symposium
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In the years 1996-2007, as a result of the implementation the considerable organizational and technical activities, the levels of occupational exposure at different type of Russian reactors were substantially decreased. Nowadays, occupational radiation protection indicators are fully correspond with the requirements of the national radiation protection regulation which is based on the ICRP Publication 60 and the IAEA BSS 115
ВНИИАЭС