Summary Report for Conduct of Kozloduy NPP Stress Tests

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“Kozloduy NPP” PLC SUMMARY REPORT for Conduct of Kozloduy NPP Stress Tests № Emergency measure Implementati on deadline Performer Supervisor Full-scale activation of the Emergency plan T 0 + £ 2 h GR1 (ERM) 4 Accident management activities: · immediate actions on limitation of accident progression; T 0 + £ 15 min Unit supervisor and GR2 Shift supervisor( GR1) · analysis and periodical assessment of once per hour GR3 emergency status; · in case of significant development of Immediately GR3 GR1(ERM) accident progression; · Strategies and procedures selection. GR1(ERM) 5 Measures for protection of personal, emergency personal and civil protection: · protective sheltering; Immediately GR5, GR6 GR1 (ERM) · iodine protective treatment; Under certain GR4 GR1 (ERM) criteria · Respiratory protection; If necessary GR4 GR1 (ERM) · Recommendations for immediate civil protective measures based on accident classification; T class + £ 15 min GR3 GR1 (ERM) · Evacuation. If feasible GR5, GR6 GR1 (ERM) 6 Rescue measures implementation If necessary GR5 GR1 (ЕRМ) 7 Personal registration and record keeping Permanently GR5 GR1 (ЕRМ) 8 Measures for of radioactive contamination control Permanently GR4 GR1 (ЕRМ) 9 Decision for implementation of immediate protective measures on the site T 0 + £ 30 min (GR1 - ЕRМ) 10 Completion of protective measures on the site T 0 + £ 2 h (GR1- ЕRМ) 11 Monitoring implementation on: · the site and protective zones; T 0 + £ 1 h GR4 · places of implementation of immediate T 0 + £ 1 h GR4 rescue measures and other activities · radiation survey of evacuation routes T 0 + £ 2 h GR4 · Routes for introducing of forces and aids T 0 + £ 4 h GR4 12 Organization and interaction with national and regional authorities After T 0 + £ 2h Permanently GR6 167/202
“Kozloduy NPP” PLC SUMMARY REPORT for Conduct of Kozloduy NPP Stress Tests 6.1.1.5 Procedures, training and exercises Actions of the personnel at design and beyond design basis accidents are defined in instructions for actions of the personnel in case of accident. Envisioned in instructions actions of the personnel result in bringing of the nuclear installations into safe condition. Actions of the personnel on diagnostics of condition of Units 5 and 6, on restoration of or replenishment for failed safety functions and on prevention or localization of consequences of core damage are defined in symptom-based emergency instructions (SBEOP). SBEOP were developed on the bases of protection of fundamental safety functions with approach similar to the Westinghouse one, as step-by-step procedures with description of main and alternative operator actions in two-column format. SBEOP are controlled and maintained adequate to existing powers through strict on-site rules on verification and validation which envision multiple checks before these are introduced into operation. Analytic validation is conducted on the original technique provided by Department of Energy (DOE USA). The validation covers all design modes and wide range of accidents, included in and required by [4]. For Units 5 and 6 3 sets are envisioned of SBEOP as follows: · SBEOP for power operations; · SBEOP for shut down reactor with pressurized primary circuit; · SBEOP for shut down reactor with depressurized primary circuit. SBEOP structure contains: · procedures on diagnostics of condition; · procedures on optimal recovery; · procedures on recovery of CSFs (critical safety functions); · procedures of ADP type (Accidents with destruction of protection). Actions on SBEOP are alerted after actuation of the emergency protection and/or involvement of the safety systems. The structure and scope of SBEOP cover all design accidents and wide range of beyond design basis accidents. Set of SBEOP on power operations is introduced into operation and distributed to operator workplaces. SBEOP for shut down reactor with pressurized primary circuit passed processes of verification and validation. Up to present operator training is conducted for work with instructions of this type, and after this they will be introduced into operation. SBEOPs set for shut down reactor with depressurized primary circuit – will be subject to internal procedures of verification and validation at the NPP. 168/202
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Summary Report for Conduct of Kozloduy NPP Stress Tests

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