Regulatory Guides on nuclear safety and security (YVL)
Authorisation
According to Section 7 r of the Nuclear Energy Act (990/1987), the Radiation and Nuclear Safety Authority (STUK) shall specify detailed safety requirements concerning the implementation of safety level in accordance with this Act.
Rules for application
The publication of a YVL Guide does not, as such, alter any previous decisions made by STUK. After having heard those concerned, STUK makes a separate decision on how a new or revised YVL Guide applies to the operating nuclear facilities or to those under construction, and to the licensees' operational activities. The Guides apply as such to new nuclear facilities.
When considering how new safety requirements laid down in YVL Guides apply to the operating nuclear facilities or to those under construction, STUK takes into account Section 7 a of the Nuclear Energy Act (990/1987): The safety of nuclear energy use shall be maintained at as high a level as practically possible. For the further development of safety, measures shall be implemented that can be considered justified considering operating experience, safety research and advances in science and technology.
In accordance with Section 7 r, paragraph three, of the Nuclear Energy Act, the safety requirements of the Radiation and Nuclear Safety Authority (STUK) are binding on the licensee, while preserving the licensee's right to propose an alternative procedure or solution to that provided for in the regulations. If the licensee can convincingly demonstrate that the proposed procedure or solution will implement safety standards in accordance with this Act, the Radiation and Nuclear Safety Authority (STUK) may approve a procedure or solution by which the safety level set forth is achieved.
Safety management of a nuclear facility
YVL A.1 Regulatory oversight of safety in the use of nuclear energy (pdf), 17 Mar 2020
YVL A.2 Site for a nuclear facility (pdf), 15 Feb 2019
YVL A.3 Leadership and management for safety (pdf), 15 Mar 2019
YVL A.4 Organisation and personnel of a nuclear facility (pdf), 15 Dec 2019
YVL A.5 Construction and commissioning of a nuclear facility (pdf), 15 Mar 2019
YVL A.6 Conduct of operations at a nuclear power plant (pdf), 15 Jun 2019
YVL A.7 Probabilistic risk assessment and risk management of a nuclear power plant (pdf), 15 Feb 2019
YVL A.8 Ageing management of a nuclear facility (pdf), 15 Feb 2019
YVL A.9 Regular reporting on the operation of a nuclear facility (pdf), 15 Feb 2019
YVL A.10 Operating experience feedback of a nuclear facility (pdf), 15 Feb 2019
YVL A.11 Security of a nuclear facility (pdf), 12 Feb 2021
YVL A.12 Information security management of a nuclear facility (pdf), 12 Feb 2021
Plant and system design
YVL B.1 Safety design of a nuclear power plant (pdf), 15 Jun 2019
YVL B.2 Classification of systems, structures and components of a nuclear facility (pdf), 15 Jun 2019
YVL B.3 Deterministic safety analyses for a nuclear power plant (pdf), 2 Sep 2019
YVL B.4 Nuclear fuel and reactor (pdf), 15 Mar 2019
YVL B.5 Reactor coolant circuit of a nuclear power plant (pdf), 2 Sep 2019
YVL B.6 Containment of a nuclear power plant (pdf), 15 Jun 2019
YVL B.7 Provisions for internal and external hazards at a nuclear facility (pdf), 15 Dec 2019
YVL B.8 Fire protection at a nuclear facility (pdf), 15 Dec 2019
Radiation safety of a nuclear facility and environment
YVL C.1 Structural radiation safety at a nuclear facility (pdf), 15 Mar 2019
YVL C.2 Radiation protection and exposure monitoring of nuclear facility workers (pdf), 1 Nov 2019
YVL C.3 Limitation and monitoring of radioactive releases from a nuclear facility (pdf), 15 Mar 2019
YVL C.4 Assessment of radiation doses to the public in the vicinity of a nuclear facility (pdf), 15 Mar 2019
YVL C.5 Emergency arrangements of a nuclear power plant (pdf), 20 Jan 2020
YVL C.6 Radiation monitoring at a nuclear facility (pdf), 15 Mar 2019
YVL C.7 Radiological monitoring of the environment of a nuclear facility (pdf), 19 Dec 2016
Nuclear materials and waste
YVL D.1 Regulatory control of nuclear safeguards (pdf), 24 May 2019
YVL D.2 Transport of nuclear materials and nuclear waste (pdf), 15 May 2019
YVL D.3 Handling and storage of nuclear fuel (pdf), 17 Mar 2020
YVL D.4 Predisposal management of low and intermediate level nuclear waste and decommissioning of a nuclear facility (pdf), 15 Dec 2019
YVL D.5 Disposal of nuclear waste (pdf), 13 Feb 2018
YVL D.6 Production of uranium and thorium in the mining and milling industry (withdrawn)
YVL D.7 Release barriers of spent nuclear fuel disposal facility (pdf), 13 Feb 2018
Structures and equipment of a nuclear facility
YVL E.1 Authorised inspection body and the licensee’s in-house inspection organisation (pdf), 15 Mar 2019
YVL E.2 Procurement and operation of nuclear fuel and control rods (pdf), 2 Sep 2019
YVL E.3 Pressure vessels and piping of a nuclear facility (pdf), 15 Dec 2019
YVL E.4 Strength analyses of nuclear power plant pressure equipment (pdf), 17 Mar 2020
YVL E.5 In-service inspection of nuclear facility pressure equipment with non-destructive testing methods (pdf), 15 Feb 2019
YVL E.6 Buildings and structures of a nuclear facility (pdf), 19 Jun 2020
YVL E.7 Electrical and I&C equipment of a nuclear facility (pdf), 15 Mar 2019
YVL E.8 Valves of a nuclear facility (pdf), 20 Jan 2020
YVL E.9 Pumps of a nuclear facility (pdf), 20 Jan 2020
YVL E.10 Emergency power supplies of a nuclear facility (pdf), 20 Jan 2020
YVL E.11 Hoisting and transfer equipment of a nuclear facility (pdf), 2 Sep 2019
YVL E.12 Testing organisations for mechanical components and structures of a nuclear facility (pdf), 15 Mar 2019
YVL E.13 Ventilation and air conditioning equipment of a nuclear facility (pdf), 23 Oct 2020