KRŠKO NUCLEAR POWER PLANT, Slovenia Continuous Monitoring of Nuclear Safety Culture and Human Performance Đurđica Šmit Mlinarič, 23.10.2017.

Krško NPP after more than 30 Years of Operation Owners: GEN Energija 50% HEP 50% Operator: Krško Nuclear Power Plant NSSS Supplier: Westinghouse Reactor Type: PWR Construction Permit: 1975 Commercial Operation: 1983 Operating Licence: 60 years No. of Employees: ~617 Gross Plant Output: 727 MW

Evaluation of safety culture Three safety culture self-assessments were performed at NEK. Methods used: observation, interview and questionnaire. Last self-assessment was performed in 2013: - 662 employees engaged voluntarily, - correlation was made between results of last two self-assessments for general NEK results and additionally for each department-level, - results were presented to all employees at all levels in organization. When comparing the results of the last two self-assessments, none of the 70 questions showed a negative trend! Next self assessment will be performed in 2018.

Continuous Monitoring of Nuclear Safety Culture and Human Performance SC and HU representatives are named in each department, Different SC and HU inputs, Trending of SC and HU, Action plans for improvement, Implementation of actions.

Continuous Monitoring of Nuclear Safety Culture and Human Performance Model NEI 09-07 „Fostering Strong Nuclear Safety Culture“, 2014

Categorization of inputs SAFETY CULTURE TRAITS Personal Accountability Questioning Attitude Safety Communication Leadership Accountability Decision-Making Respectful Work Environment Continuous Learning Problem Identification and Resolution Environment for Raising Concerns Work Processes HUMAN PERFORMANCE TOOLS Self-checking Pre-job briefing Effective communication Peer checking Questioning Attitude Use and adherence to procedures Use of operating experience Observation and coaching Independent verification Post-job briefing

Struggles we‘ve met VS. Lessions learned (so far) How to be a representative and NOT a „spie“?! How to get valuable inputs and sustain trust? Corrective Action Program as an main source of inputs. Are ALL inputs equally valuable? It is after all additional work… Informal leaders are best representatives, Communicate! Encourage team members to contribute with their own ideas of what input is, We are all one Team working for the same goal, Help them organize: - reminder for monthly reports, - categorization of inputs, - guide don‘t tell

Thank you for attention! www.nek.si A: Vrbina 12, 8270 Krško M: nek@nek.si www.nek.si