MODULE “ PREPARING AND MANAGEMENT OF DOCUMENTATION ”

1. MODULE “PREPARING AND MANAGEMENT OF DOCUMENTATION” DECOMMISSIONING MANAGEMENT SAFE DECOMMISSIONING OF NUCLEAR POWER PLANTS Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

2. CONTENTS • Decommissioning plans: - conceptual plan; - decommissioning plan; - plan for final shut down of the nuclear facility. 2. Reports associated with decommissioning Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

3. TRAINING OBJECTIVES Upon completion of training trainees should be able to: • Describe the structure and main parts of decommissioning documentation. • Explain the scope and content of the Conceptual Plan and the Decommissioning Plan. • Explain the scope and content of the Plan for Final Shut Down of the Nuclear Facility. • Describe the structure and the scope of the Decommissioning Safety Analysis Report. • Describe the structure and the scope of the Environment Impact Report. • Describe the structure and the scope of the Final Decommissioning Report. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

4. STANDARD REGULATIONS • Holder of permit (licensee) for selection of site, design, construction, commissioning and licensee for nuclear facility operation develop initial and interim concepts and plans for nuclear facility decommissioning. • Stressing on the ethical principles – not to accrue burden on future generations in result of today’s generation activities – requires speeding up of decommissioning process. • Nuclear facility decommissioning is based on a concept used as a basis for choosing optimum and safe option for main activities performance and implementation phases during decommissioning. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

5. CONTENTS OF CONCEPT • Long-term decommissioning concept; • Technical measures and modifications facilitating decommissioning activities: • appropriate layout of facilities, systems and components; • structural materials, equipment and systems easy to decontaminate. • Preliminary analyses and assessments of decommissioning impact on population and environment; • Financial assurance substantiation: • preliminary evaluation of needed finances; • ways and mechanisms to provide needed financial means and their management in accordance with local current standard regulations. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

6. THE CONCEPT – A DEMONSTRATIVE INFORMATION DOCUMENT • Expected status of sites and equipment; • Volume and activity of radioactive materials and waste; • Radiological status; • Decommissioning activities; • Environmental status; • Expected impact of activities on environment; • Activities to decrease unfavorable impact; • RAW and spent fuel management; • Evaluation of advantages and disadvantages of different options. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

7. A CONCEPT PRIOR TO NUCLEAR FACILITY COMMISSIONING • Contains updated information related to: • existing facility status; • technologies for RAW and spent fuel management. • Defines requirements for registration and archiving of information important for preparation for decommissioning; • Contains detailed substantiation of changes in option selections, if any. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

8. DECOMMISSIONING PLAN – BASIS FOR DEVELOPMENT • Safety analysis report; • Good practices, results, documents and data received in the process of ongoing planning; • Results of other analyses, studies and projects related to decommissioning, including environmental impact assessment; • Analyses and substantiations that cover and justify availability, technical status, operational lifetime, and preparedness to perform the functions of existing systems and safety related equipment. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

9. DECOMMISSIONING PLAN – IMPROVED CONCEPTUAL PLAN • Based on the concept; • Contains description of social aspects; • Contains the two options for technical solution; • Contains zero option in case of failure to implement decommissioning. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

10. CONTENTS OF DECOMMISSIONING PLAN • Short description of main plan components; • Description of facility and site; • Description of conditions and events that occurred during operations and reasons for decommissioning; • List of standards used for decommissioning planning; • Radiological criteria at decommissioning; • Substantiation of selected decommissioning option; • Schedule and description of decommissioning activities; • Evaluation of generated radioactive and other hazardous materials; • Classification of safety related systems and equipment for different decommissioning phases; • Description of planned modifications of existing systems and new systems needed for decommissioning; Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

11. CONTENTS OF DECOMMISSIONING PLAN – CONTND. • Description of decontamination activities; • Description of technologies and technical means; • RAW management program; • Safety assessment program; • Radiation protection concept; • Radiation monitoring programs; • Description of organization and responsibilities; • Quality assurance program; • Plant emergency plan; • Documents identifying measures for physical protection; • Evaluation of needed financial resources; • Monitoring programs upon completion of decommissioning; • Schedule for reporting to BNRA. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

12. MAIN TECHNICAL AND ECONOMIC PARAMETERS • Process costs per cause nature: • Costs for industrial activities; • Costs depending on time; • Single costs. • Labour-consuming; • Stuffing; • Duration of the process. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

13. PARAMETERS CHARACTERISING IMPACT ON STAFF • Individual exposure dose: • External radiation; • Absorbed radiation. • Collective exposure dose. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

14. ENVIRONMENT IMPACT PARAMETERS • Gaseous releases; • Liquid releases. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

15. PARAMETERS CHARACTERIZING THE NEED FOR WASTE DISPOSAL • Quantity of generated by-product waste; • Possibility for temporary storage of waste; • Number of containers with conditioned RAW for pre-surface disposal; • Number of containers with conditioned RAW for disposal in deep geological formations; • Possibilities for long-term storage of waste prior disposal. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

16. OTHER PARAMETERS • Weight of the metal for unlimited usage; • Weight of re-cycled material generated during demolition of construction sites; • Volume of non-radiated material; • Weight of contaminated metal for disposal; • Liquid waste generated during decommissioning; • Solid waste generated during decommissioning; • Consumption parameters. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

17. DOCUMENTS DEVELOPED DURING DECOMMISSIONING • Plan at the stage of final shutdown of a nuclear facility • Required documentation for granting a permit at decommissioning phase • Plan of a phase during decommissioning Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

18. OBJECTIVES OF FINAL SHUTDOWN DOCUMENTATION • Identification of safe, reliable and efficient method of operation of equipment needed at that phase; • Identification of equipment and sites not needed for further operation; • Identification of methods for shutdown and safe separation of equipment. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

19. FINAL SHUTDOWN DOCUMENTATION - CONTENTS • Description of new supporting venting systems or restoration of available systems; • Description of maintenance, repair and reconstruction; • Installation of modular boxes; • Installation of laundry equipment and RAW treatment equipment; • Erection of disposal facilities; • Implementation of new monitoring systems. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

20. DOCUMENTATION FOR GRANT OF PERMIT (LICENSE) FOR DECOMMISSIONING • Identification data of the applicant; • Type of requested permit (license); • Term of permit (license); • General description of site main characteristics; • Data for administrative acts; • List of attached documents. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

21. ATTACHMENTS TO APPLICATION • Legal documents; • Documents concerning the applicant; • Substantiation of term duration; • List of applicable standards; • Safety assessment report; • Decommissioning plan; • Operational regulations; • Operational procedures; • Decision on the assessment of environment impact. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

22. DOCUMENTS FOR PERMITION OF A PHASE DURING DECOMMISSIONING • Updated decommissioning plan for corresponding phase; • Activity organization and implementation plan; • Operational regulations; • Operational procedures; • Updated SAR for the phase. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

23. CONSTITUENT PARTS OF PHASE PLAN • Results of radioactive control; • Program for control; • Substantiation of changes in operating limits and conditions; • Substantiation of selected equipment. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

24. TYPES OF PHASE PLANS • Plan for preparation of safe enclosure phase; • Plan for safe enclosure phase; • Plan for finishing phase. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

25. SAFETY ASSESSMENT REPORT • Description of nuclear facility and its ambient media; • Concept for decommissioning; • Spent fuel management; • Radioactive waste and other hazardous materials management; • Radiation protection; • Release from control of materials; • Legal requirements; • Description of decommissioning activities; Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

26. SAFETY ASSESSMENT REPORT – CONTND. • Description of decommissioning technologies; • Description of the new and reconstructed systems; • Safety analyses; • Description of hazardous substances inventory; • RAW description and classification; • Description of radioactive releases; • Monitoring program; • Description of procedures for radiological protection of staff; • Description of organization of decommissioning. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

27. ENVIRONMENT IMPACT ASSESSMENT REPORT • Structure similar to the one of safety report; • Compares several options of decommissioning process; • Covers in details decommissioning costs and losses; • Developed on the basis of updated decommissioning conceptual plan. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

28. FINAL DECOMMISSIONING DOCUMENTATION • Final report; • Site radiological status assessment; • Application for issuance of permit for release of nuclear facility: • Description of nuclear facility status; • Description of decommissioning activity; • Report on professional exposure doses; • Inventory of radioactive materials; • Inventory of materials cleared from regulatory control; • List of retrieved information; • Report on final radiological survey and independent review report. Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”

29. REFERENCES • Decommissioning of Nuclear Power Plants and Research Reactors, Safety Guide, SS № WS-G-2.1 (1999) • Organization and Management for the Decommissioning of Large Nuclear Facility, TRS № 399 (2000) • The Decommissioning of WWER-Type Nuclear Power Plants, IAEA-TECDOC-1133 (2000) • Act on the Safe Use of Nuclear Energy, 2002 • Regulation for the Safety of the Decommissioning of Nuclear Facilities, 2004 • Regulation for the Procedure for Issuing Licenses and Permits for Safe Use of Nuclear Energy, 2004 Project BG/04/B/F/PP-166005, Programme “Leonardo da Vinci”