Kozloduy :	|	Operating History	|	Scope of DOE Activities	|	Accomplishments	|

Accomplishments

Management and Operational Safety

• Processes, hardware, and software were transferred to the plant for developing internationally accepted emergency operating instructions (EOIs) that promote safety through improved accident mitigation strategies.

• Twenty-two of 29 emergency operating instructions for the VVER-440/230 reactors and 36 of 40 emergency operating instructions for the VVER-1000 reactors were drafted by plant staff. A series of workshops has been completed to support the development of an EOI regulatory infrastructure.

• Operator exchanges that trained plant personnel to develop improved operating safety procedures and practices were completed.

• A complete set of 16 management and operational control procedures that promote safety through improved operating practices were developed and implemented at the plant.

• A configuration management system was developed for the plant.

• The transfer of the Systematic Approach to Training methodology and training materials developed at the Balakovo and Khmelnytskyy Training Centers is ongoing at the Kozloduy plant. The Systematic Approach to Training provides a standard framework for identifying training needs, developing course materials, and teaching. The approach combines classroom instruction with the use of hands-on equipment, including a full-scope simulator. A seminar on the Systematic Approach to Training was held for management personnel to ensure familiarity with and support for the methodology.

• Pilot courses for shift supervisors, reactor repair technicians, mechanical maintenance personnel, and control room reactor operators have been taught at the plant.

• Simulator instructor training was provided at the plant.

Engineering and Technology Upgrades

• A backup emergency diesel generator was delivered to the plant. The generator provides backup power for operation of key safety systems, should an emergency disable both offsite electrical power and other onsite sources.

• A fire truck, communications equipment, and radiation monitoring equipment were provided to the plant to improve the response capability of the fire brigade.

Plant Safety Evaluations

• A seismic assessment of the buildings that route key electrical cables for Units 5 and 6 was completed. The assessment identified structural supports that could be vulnerable in an earthquake and recommended measures to strengthen the supports and anchor the cables.

• A seismic assessment of the plant's essential service water system that provides cooling for safety-related equipment outside the reactor containment areas was completed. The assessment provided recommendations to reduce the seismic vulnerability of pipes and valves.

• Analysis capability and training were provided to Bulgarian technical specialists to enable them to evaluate the potential for combustion/detonation of hydrogen, which could threaten the plant's containment integrity during accident scenarios.

• Computers, safety codes, and training were provided to improve the safety analysis capability at the plant.

• A series of training workshops (including a month-long short course in Idaho Falls) was completed to assist the Bulgarian analytical organizations in completing the thermohydraulic analysis that will validate the operator actions contained in the emergency operating instructions.