Today, on February 22, 2013, the First Deputy Chairman of the State Nuclear Regulation Inspectorate of Ukraine (SNRIU), the Principal State Supervisor for Nuclear and Radiation Safety of Ukraine, Mikhail Gashev visited Chernobyl NPP.

The objective of the visit was to hold meeting on issues regarding investigation of the event occurred on February 12, 2013, in ChNPP Unit 4 Turbine Hall and development of the corrective measures; progress on construction of new ventilation stack (NVS), as well as issues on management of damaged spent nuclear fuel (DSNF).

A specific attention was paid to investigation of the event occurred on February 12, 2013. The First Deputy Chairman of SNRIU, the Principal State Supervisor for Nuclear and Radiation Safety of Ukraine, inspected the site of occurrence, visited workplaces of operating personnel, where he got familiar with the records of the operating logs (including those of February 12, 2013). He was also demonstrated with operation of radiation and seismic monitoring subsystems of the Integrated Automated Shelter Monitoring System, including data of February 12.

Mikhail Gashev visited Unit 2 Central Hall (CH-2), where he became familiar with progress on ChNPP Unit release from spent nuclear fuel (SNF), including damaged one.

Following the visit, there was held a meeting with participation of SSE ChNPP managers, during which the First Deputy Chairman of SNRIU, the Principal State Supervisor for Nuclear and Radiation Safety of Ukraine, was reported on investigation progress regarding partial collapse of a part of roof and walls of Unit 4 Turbine Hall, being held by ChNPP commissions, and he was provided with action plan on mitigating roof breakdown and potential hazards for available structures and personnel.

Further during the meeting, the SSE ChNPP management provided scheduled measures on NVS commissioning. After discussion of issues on damaged spent nuclear fuel management, the First Deputy Chairman of SNRIU, the Principal State Supervisor for Nuclear and Radiation Safety of Ukraine agreed a decision on DSNF disposal at available Interim Storage Facility for Spent Nuclear Fuel (ISF-1). At the end of meeting, M. Gashev turned over the licenses to the SSE ChNPP Management for the right to perform organizational and administrative functions associated with nuclear and radiation safety assurance.