Regulatory oversight of nuclear safety in Finland. Annual ... - STUK

Introduction
This report constitutes the report on regulatory control in the field of nuclear energy which
the Radiation and Nuclear Safety Authority (STUK) is required to submit once a year to
the Ministry of Employment and the Economy pursuant to Section 121 of the Nuclear
Energy Decree. The report is also delivered to the Ministry of Environment, the Finnish
Environment Institute, and the regional environmental authorities of the localities in
which a nuclear facility is located.
STUK-B 147
The regulatory control of nuclear safety in 2011 included the design, construction and
operation of nuclear facilities, as well as nuclear waste management and nuclear materials.
The control of nuclear facilities and nuclear waste management, as well as nuclear nonproliferation,
concern two STUK departments: Nuclear Reactor Regulation and Nuclear
Waste and Material Regulation.
The first parts of the report explain the basics of nuclear safety regulation included as part
of STUK’s responsibilities, as well as the objectives of the operations, and briefly introduce
the objects of regulation. The chapter concerning the development and implementation of
legislation and regulations describes changes in nuclear legislation, as well as the progress
of STUK’s YVL Guide revision work.
The section concerning the regulation of nuclear facilities contains an overall safety assessment
of the nuclear facilities currently in operation or under construction. For the nuclear
facilities currently in operation, the chapter describes plant operation, events during
operation, annual maintenance and observations made during regulatory activities. Data
and observations gained during regulatory activities are reviewed with a focus on ensuring
the safety functions of nuclear facilities and the integrity of structures and components.
Summaries are included for the development of the plants and their safety, and nuclear
waste management. The report also includes a description of the oversight of the operations
and quality management of organisations, oversight of operational experience feedback
activities, and the results of these oversight activities. The radiation safety of nuclear
facilities is examined using employees’ individual doses, collective doses, and the results of
emission and environmental radiation monitoring. For the Olkiluoto 3 plant unit currently
under construction, the report includes descriptions of the regulation of design, construction,
manufacturing, installation and commissioning preparations, as well as regulation
of the operations of the licensee and the organisations participating in the construction
project. At the end of the chapter on the regulation of nuclear facilities, there is a summary
of assessments initiated following the Fukushima accident, new plant projects and regulation
of the research reactor.
7