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Electromagnetic Compatibility of NPP

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Electromagnetic Compatibility and Safety of Nuclear Power Plants.

Tech Area / Field

  • FIR-NSS/Nuclear Safety and Safeguarding/Fission Reactors

Status
3 Approved without Funding

Registration date
01.12.1995

Leading Institute
All-Russian Research Institute for Nuclear Power Plant Operation, Russia, Moscow

Supporting institutes

  • NIIIT (Pulse Techniques), Russia, Moscow\nVNIIEF, Russia, N. Novgorod reg., Sarov\nState Marine Technical University, Russia, St Petersburg

Collaborators

  • Ecole Polytechnique Federale de Lausanne, Switzerland, Lausanne\nRadio Frequency Investigation Ltd., UK, Basingstoke\nLos-Alamos National Laboratory, USA, NM, Los-Alamos\nEDF, France, Paris

Project summary

The prоblem of eleсtrоmagnetiс соmpatibility at nuclear pоwer plants (NFF ) originated from analysis of operational reliability of equipment employed in safety systems and safety-related systems at the period of NFP reconstruction soon after Chernobyl catastrophe.

To ensure the safety operation of nuclear reactors the NFP are equipped with safety systems. (SS), safety-related systems (SRS) and standard operation systems.

Safety of population and environment depends on a degree of reliability in operation of these systems.. Failures in operation of these systems may initiate disruptions of nuclear power plant normal operation.

One common cause for initiation of SS and SRS failures may be inadequate electromagnetic compatibility of these systems or their inadequate immunity to electromagnetic factor's action on circuits of reliable power supply, control and protection.

At present the electromagnetic compatibility of SS and SRS remains unclarified in many respects which hampers the development of measures for ensuring reliable and safe operation of NFP units. The reason is that at the stage of NPP development and design the problems of ensuring SS and SRS electromagnetic compatibility didn't get proper attention.

Experience in operating NFP proved that the accidents at NFP' related to failures in SS and SRS functioning under real operation conditions frequently have its origin in inadequate electromagnetic compatibility of equipment and systems vital for safety.

All the above factors decrease reliability and safety of NPP operation and may negatively affect environment and population safety.

The present Project's purpose is:

to develop technical and methodological means for support of works for improvement of SS and SRS compatibility in accordance with established requirements of standardizing documents for both newly constructed NPP and ones already in operation with different reactor types which will make possible to raise the operation safety of NPP units, population and environment safety.

To achieve this goal it is necessary to carry out:

- Expert examination of designs of power units with RBMK. and VVER reactors for NPP both in operation and at the stage of designing with aim to see how the electromagnetic compatibility of NPP SS and SRS is being ensured.

- Computation and experimental research of possible occurence of technogenous catastrophes due to the effect of EMP on equipment and SRS of NPP.

- Development of standard experimental and computation techniques and programs for investigation and assessment of parameters of electromagnetic origin needed in development NFP equipment and in designing NFP safety and safety-related systems.

- Clarification of standard requirements determining electromagnetic compatibility of NPP SS and SRS. Experimental investigations of electromagnetic environment at NPP and characteristics оf nuclear reactor and power equipment electromagnetic compatibility, investigations of EMC- effects on ensuring NPP safety.

- Development of technical measures and means for enhancing EMC of NPP equipment and SRS with the purpose to decrease the number of false activations of protection systems- and preventing unauthorized operation of nuclear reactor equipment.

It is possible to extend the results obtained in the course of the Project realization to NPP located abroad in CIS countries where similar problems, are available.

The most actual is the problem of EMC investigation and improvement of nuclear reactor emergency protection systems, nuclear reactor neutron power control systems, incore monitoring systems-, safety monitoring systems of NPP reactor.

Expected results of works:

- Improvement and scientific support of requirements and conceptions for ensuring electromagnetic compatibility of NPP equipment in accordance with accepted postulates providing for operational safety of NPP.

- Raising reliability of NPP equipment and ensuring safety of NPP personnel, population and environment.

- Building up technical and manpower basis for earring out international cooperation on certification of equipment manufactured for NPP of Russia and CIS countries which will give rise to long-term prospect for peaceful employment of nuclear weapon scientists.

The results of works may be published and made accessible to scientists around the world, reported at international conferences devoted to problems, of reliability and operational safety of NPP and at symposiums on EMC of power equipment and systems.


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