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ISOE International ALARA Symposium

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Presentation on theme: "ISOE International ALARA Symposium"— Presentation transcript:

1 ISOE International ALARA Symposium
верхний OCCUPATIONAL EXPOSURE DYNAMICS IN DIFFERENT TYPES OF RUSSIAN NUCLEAR POWER PLANTS Dr. Boris Bezrukov Concern Energoatom, Russia Dr. Olga Bezrukova VNIIAES, Russia Dr. Vadim Glasunov VNIIAES, Russia Tsuruga November 2008 ISOE International ALARA Symposium нижний

2 List of the Russian commercial reactors
верхний List of the Russian commercial reactors 10 NPPs, 31 Units, P=23242 MW(el) Tsuruga November 2008 ISOE International ALARA Symposium нижний

3 ISOE International ALARA Symposium
верхний Nowadays, 31 commercial reactors are totally operated in the Russian Federation VVER type reactors - 11 RBMK type reactors - 5 custom – built reactors reactors are at the stage of decommissioning Tsuruga November 2008 ISOE International ALARA Symposium нижний

4 ISOE International ALARA Symposium
верхний 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 Tsuruga November 2008 ISOE International ALARA Symposium нижний

5 ISOE International ALARA Symposium
верхний 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 Tsuruga November 2008 ISOE International ALARA Symposium нижний

6 ISOE International ALARA Symposium
верхний 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 Tsuruga November 2008 ISOE International ALARA Symposium нижний

7 ISOE International ALARA Symposium
верхний The 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 Tsuruga November 2008 ISOE International ALARA Symposium нижний

8 ISOE International ALARA Symposium
верхний Comparison of some occupational radiation protection indicators of Russian reactors in 1996 and 2007 Kind of indicator Reactor type 1996 2007 Average 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 68 861 37 966 Average annual collective dose per unit, man Sv 1.7 9.4 3.4 1.3 0.5 4.3 Tsuruga November 2008 ISOE International ALARA Symposium нижний

9 ISOE International ALARA Symposium
верхний Average annual individual doses at different types Russian reactors for the years Tsuruga November 2008 ISOE International ALARA Symposium нижний

10 ISOE International ALARA Symposium
верхний Distribution of the number of plant personnel and contractors according to the intervals of the annual individual dose for 2007, in % Tsuruga November 2008 ISOE International ALARA Symposium нижний

11 ISOE International ALARA Symposium
верхний Evolution of the total number of plant personnel and contractors with the annual individual dose less than 1 mSv for the years , in % from total % Tsuruga November 2008 ISOE International ALARA Symposium нижний

12 ISOE International ALARA Symposium
верхний Number of plant personnel and contractors with the annual individual dose more than 20 mSv for the years Tsuruga November 2008 ISOE International ALARA Symposium нижний

13 ISOE International ALARA Symposium
верхний Distribution of the number of plant personnel and contractors according to accumulated individual dose for the years Tsuruga November 2008 ISOE International ALARA Symposium нижний

14 ISOE International ALARA Symposium
верхний Average annual collective doses per unit at different types Russian reactors for the years Tsuruga November 2008 ISOE International ALARA Symposium нижний

15 ISOE International ALARA Symposium
верхний In the years , 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 Tsuruga November 2008 ISOE International ALARA Symposium нижний

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