Published date:
29 October 2004
NEA/CNRA/R(2009)2
In order to capture the current situation, members of the WGOE IOEF Task Group provided short narratives outlining their national OEF practices. The IOEF Report notes that, in order to get a comprehe...
Published date:
11 May 2009
As all safety systems in the majority of existing nuclear power plants use the preferred power supply, any voltage surges in these systems could lead to common-cause failures. In the event of an unus...
Published date:
17 May 2013
Managing the ageing of fuel cycle facilities (FCFs) means, as for other nuclear installations, ensuring the availability of required safety functions throughout their service life while taking into a...
Published date:
31 December 2013
The way in which nuclear licensees’ organisations are structured and resourced clearly has a potential impact on nuclear safety. As experience has continually demonstrated, operating organisations wi...
Published date:
15 May 2012
Acceptance criteria for emergency core cooling systems (ECCS) define the maximum temperature and degree of oxidation in order to avoid excessive embrittlement and hence failure of the fuel cladding, ...
Published date:
21 September 2011
Probabilistic safety analyses (PSAs) for many of the nuclear power plants throughout the world are being maintained as "living PSAs" (LPSAs), being updated to take account of changes to the design an...
Published date:
1 February 2005
These technical opinion papers represent the consensus of risk analysts and experts in NEA Member countries on the current state of the art in Fire Probabilistic Safety Assessment (PSA) for nuclear p...
Published date:
26 September 2002
This technical opinion paper represents the consensus of risk analysts in NEA member countries on the current state of the art of level-2 probabilistic safety assessment (PSA) and its applications in...
Published date:
20 April 2007
This technical opinion paper provides the reader with a concise description of both the benefits and disadvantages of using probabilistic safety assessment (PSA) to analyse operational events in nucl...
Published date:
2 December 2004
Nuclear licensees are increasingly required to adapt to a more challenging commercial environment as electricity markets are liberalised. One of the costs that is often perceived as being amenable to...
Published date:
9 June 2004
This technical opinion paper represents the consensus of risk analysts in NEA member countries on the current state of the art of human reliability analysis (HRA) in probabilistic safety assessment (...
Published date:
9 February 2004
Feedback on operating experience from nuclear power plants is intended to help avoid occurrence or recurrence of safety-significant events. Well-established feedback systems exist on the national and...
Published date:
31 December 2004
It is a dynamic time for the nuclear power sector. Existing reactor control rooms are undergoing various forms of modernisation. New reactors are being built in many countries and advanced reactors a...
Published date:
11 December 2009
Errors during maintenance and periodic testing are significant contributors to plant events. These errors may not always be revealed by post-maintenance tests and may remain undetected for extended p...
Published date:
26 February 2009
Nuclear power plant modifications may be needed for a number of different reasons. These include physical ageing of plant systems, structures and components; obsolescence in hardware and software; fe...
Published date:
3 February 2009
CSNI Technical Opinion Paper No. 17: Fire Probabilistic Safety Assessments for Nuclear Power Plants: 2019 Update provides an authoritative review of the current status and use of the fire PSA in nucl...
Published date:
27 May 2019
Seismic probabilistic safety assessment (SPSA) is a systematic method for examining and evaluating the risk from earthquake-initiated accidents. The significant advances in the area of SPSA since the...
Published date:
27 September 2021
Published date:
28 May 2008
The CSNI Action Plan in the Area of Safety Margins was set up by the Committee on the Safety of Nuclear Installations (CSNI),
Published date:
27 April 2020
Published date:
6 May 2013
Published date:
30 May 2013
The OECD Nuclear Energy Agency (NEA) Committee on Nuclear Regulatory Activities (CNRA) Working Group on Public Communication of Nuclear Regulatory Organisations (WGPC) organised the workshop “Crisis ...
Published date:
15 June 2020
Published date:
27 May 2003
NEA/CNRA/R(2018)3
This consensus position provides evaluation guidance for the qualification of platforms developed for general industrial use as well as those developed specifically for nuclear applications important...
Published date:
4 September 2018
NEA/CNRA/R(2018)2
This consensus position addresses agreed-upon principles on data communication independence for digital I&C systems between safety systems, between redundant divisions of a safety system, and between...
Published date:
13 June 2018
Control room, PAKS NPP.
Software-based systems are used and retrofitted in operating nuclear power plants worldwide. The failure modes of both hardware and software in these systems are to some ext...
Published date:
7 November 2023
NEA/CNRA/R(1998)1
This report presents a comparison of inspection practices in participating OECD countries relating to control room operator and shift supervisor licenses. Key questions for this comparison were ”What...
Published date:
1 January 1998
NEA/CNRA/R(2008)5
This revision of the CNRA Historical Record represents an up-to-date accounting of the work performed by the Committee since its conception in 1989. As noted during the 2004 review of the CNRA, “This...
Published date:
8 July 2008
NEA/CNRA/R(2004)2
The organisations, structures and processes of regulatory authorities have evolved over the past 50 or so years. Major changes have taken place following events such as Three Mile Island and Chernoby...
Published date:
15 November 2004
NEA/CNRA/R(2006)2
The Joint CSNI/CNRA Strategic Plan states in its last paragraph that:
"CNRA and CSNI each prepare an operating plan which describes in more detail their committeeís organisation, planned activities, ...
Published date:
26 June 2006
NEA/CNRA/R(2009)1
Fire is a one of the hazards that is most commonly encountered in Nuclear Power Plants and could result in damages to safety related systems and to systems important to obtain and maintain safe shutd...
Published date:
10 February 2009
The Committee on Nuclear Regulatory Activities (CNRA) is an international committee created in 1989 to guide the NEA concerning safety in the regulation, licensing and inspection of nuclear installat...
Published date:
16 February 2024
NEA/CNRA/R(2011)3
Report jointly prepared by the CNRA Working Group on Public Communication of Nuclear Regulatory Organisations and by the Working Group on Transparency Activities of the European Nuclear Safety Regula...
Published date:
20 December 2010
This report was jointly prepared by the Working Group on Public Communication of NuclearRegulatory organisation of the Nuclear Energy Agency (NEA) Committee on Nuclear Regulatory Activities (CNRA) an...
Published date:
15 June 2020
Published date:
12 October 2001
Published date:
11 December 2001
Published date:
31 December 2004
Published date:
26 March 2004
Codes and standards are technical positions that govern specific activities such as welding, fabrication, testing and non-destructive examination, and are crucial to nuclear safety operations.
Published date:
18 March 2020
NEA/CNRA/R(2005)1
This report completes a study that was endorsed by CNRA following discussion on the issue. It is intended to be a basis for a new section in the next revision of the “Status Report on Regulatory Insp...
Published date:
4 April 2005
NEA/CNRA/R(2009)3
In 2006, the CNRA Working Group on Operating Experience (WGOE) began the task of examining national and international operating events databases in order to identify any potential safety issues relat...
Published date:
19 May 2009
The Committee on Nuclear Regulatory Activities (CNRA), at its June 2006 meeting, agreed to form a Senior-level Expert Group to produce a report called "The Regulatory Goal of Assuring Nuclear Safety"...
Published date:
13 March 2020
NEA/CNRA/R(1992)1
This report provides the conclusions of two surveys send in 1988 and 1989. The work, initiated by the CSNI, has been completed by the newly created CNRA.
It provides a comparison of regulatory practi...
Published date:
1 January 1992
NEA/CNRA/R(2011)2
The Joint CSNI/CNRA Strategic Plan states, the Committees' Operating Plans describe each Committee's organisation, priorities and operating procedures to be used in fulfilling their mandates. The Ope...
Published date:
7 October 2010
NEA/CNRA/R(2008)2
The Joint CSNI/CNRA Strategic Plan states in its last paragraph that: "CNRA and CSNI each prepare an operating plan which describes in more detail their committeeís organisation, planned activities, ...
Published date:
22 January 2008
NEA/CNRA/R(2008)1
With the development of the Joint CSNI/CNRA Strategic Plan and the drafting of a CNRA Operating Plan, the need to develop operating guidelines was recognised. These documents along with the Review Re...
Published date:
22 January 2008
NEA/CNRA/R(2010)3
Consistent with the CNRA/CSNI Joint Strategic Plan (2005-2009) and CNRA Operating Plan, the WGRNR began in May 2008 a task of examining and documenting the various practices used by regulatory author...
Published date:
17 May 2010
NEA/CNRA/R(2003)4
This report presents the WGIP survey on contracted work. The task was undertaken by the WGIP to identify trends and impacts from the use contractors by NPP organisations in member countries. The surv...
Published date:
3 October 2003
NEA/CNRA/R(2012)5
Following discussions at the CNRA meeting held on 7-8 June 2010, the Senior Task Group on Long-term Operation was established to prepare a document on regulatory challenges for long-term operation of...
Published date:
15 May 2012