National Report of the Slovak Republic - Radiation and Nuclear Safety
, September 1998
2.3.2 EMO Units Safety Reviews
The final goal of Nuclear Power Plants Mochovce's operator has been to complete the construction of, and to operate the power plant at a safety level complying with the current international requirements and standards, and acceptable to the general public of Western European countries. Owing to this, several reviews by international experts and organizations were organized already during the construction stage; the results of those reviews have been implemented into the project documentation, and their implementation is expected to help reaching a high safety and reliability standard of the WWER-440/V213 unit operation.
Since the early 1990s, NPP Mochovce has been subject of several international audits oriented towards the review of the safety standards. About 2,000 experts took part in them, and their conclusions can be summarized to state that there are no safety issues which could not be treated and which would prevent the commissioning of NPP Mochovce.
- IAEA Mission - for OSART, conducted on January 9 - 29, 1993, was focusing on the review of the preparedness of the operator to commission and to operate the plant. The Final Report contains recommendations for improvements in the areas of management, staff training, operation and maintenance, technical support, radiation protection, emergency planning and preparedness, as well as in the area of start-up which cover operation safety and identify good practices and activities to be considered also by other nuclear power plants.
- IAEA Mission - Safety Improvements Review for NPP Mochovce. The Mission was focusing on the check-up of safety improvements at NPP Mochovce. The aim was to discuss safety-related problems known to exist with respect to WWER 440/213 reactors, safety improvements already incorporated into the NPP Mochovce project or suggested in the Safety Improvements Report prepared by EdF and SIEMENS experts working together with Slovak organizations. The review covered the main safety functions - power control fuel cooling, maintaining of the primary circuit integrity. In addition, CMS, electric feeding, emergency analyses, internal and external risks were all considered. A report was compiled containing the findings and recommendations for individual areas reviewed, and they were incorporated into the NPP Mochovce´s safety improvements program.
- IAEA Seismic Safety for Nuclear Power Plants Bohunice and Mochovce Mission. The aim of the Mission was to verify the evaluation method of seismic input data and to assess the effects of external earthquake risk on NPP safety. The prepared POSP was used as a background material. The Mission reviewed the background materials supplied, and compared them with the recommendations of the IAEA 50 - SG - S1 safety guide concerning the location of NPP. In conclusion, procedures and results obtained were considered adequate.
- RISKAUDIT Mission (consortium of technical support organizations IPSN and GRS working for national nuclear authorities of France and Germany) focused on the review of safety improvements of NPP Mochovce and the assessment of design safety was conducted on December 20, 1994.
- IAEA experts meeting held on September 14 - 18, 1998 in Vienna conclude that no concerns were identified with the integrity of the Mochovce Unit Reactor Pressure Vessel.
All the technical suggestions as well as the organizational measures suggested by the final reports of the above reviews were incorporated into the NPP Mochovce´s safety improvements program either directly or in a modified form, and are being gradually implemented through various safety measures, as shown in Section 2.3.3.
Copyright © UJD SR, 1998
Copyright © SE, a. s., 1998