On the Regulatory Review of the TVO I/II Low Power and Shutdown Risk Assessment

1996 ◽  
pp. 357-362
Author(s):  
J. V. Sandberg ◽  
R. K. Virolainen ◽  
I. M. Niemelä
Keyword(s):  
Risk Assessment ◽  
Low Power ◽  
Regulatory Review

Risk and Performance Technologies: Identifying the Keys to Successful Implementation

2002 ◽  
Author(s):  
Lynn McClain ◽  
Art Smith ◽  
Patrick O’Regan
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Nuclear Power ◽  
Cost Effective ◽  
Successful Implementation ◽  
Individual Plant ◽  
Regulatory Review ◽  
Performance Technology ◽  
Proper Understanding ◽  
And Performance

The nuclear power industry has been utilizing risk and performance based technologies for over thirty years. Applications of these technologies have included risk assessment (e.g. Individual Plant Examinations), burden reduction (e.g. Risk-Informed Inservice Inspection, RI-ISI) and risk management (Maintenance Rule, 10CFR50.65). Over the last five to ten years the number of risk-informed (RI) burden reduction initiatives has increased. Unfortunately, the efficiencies of some of these applications have been questionable. This paper investigates those attributes necessary to support successful, cost-effective RI-applications. The premise to this paper is that by understanding the key attributes that support one successful application, insights can be gleaned that will streamline/coordinate future RI-applications. This paper is an extension to a paper presented at the Pressure Vessel and Piping (PVP-2001) Conference. In that paper, a number issues and opportunities were identified that needed to be assessed in order to support future (and efficient) RI-applications. It was noted in the paper that a proper understanding and resolution of these issues will facilitate implementation of risk and performance technology in the operation, maintenance and design disciplines. In addition, it will provide the foundation necessary to support regulatory review and approval.

The Shutdown PSA Model of the TQNPP CANDU Reactor and the Outage Risk Management

2017 ◽  
Author(s):  
Xiaochun Peng ◽  
Qiang Fu ◽  
Yu Han ◽  
Yong Cao
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Low Power ◽  
Safety Management ◽  
Nuclear Safety ◽  
Management Guideline ◽  
Working Plan ◽  
Assessment Result

This paper presents the characteristic of Outage Nuclear Safety Management Guideline (ONSMG) for Qinshan CANDU plant and the introduction of shutdown and low-power PSA (SPSA) of TQNPP. The SPSA model is used to assess the outage configuration risk of OT109. The result and its risk insight are discussed about the two different outage working plan. In conclusion, the risk of nuclear safety and the economic are discussed based on the risk assessment result.

Qualitative Risk Assessment in the ANS LPSD PRA Standard

2004 ◽  
Author(s):  
William E. Burchill ◽  
Jeffrey A. Julius ◽  
Mary Drouin ◽  
Kenneth L. Kiper
Keyword(s):  
Risk Assessment ◽  
Low Power ◽  
Probabilistic Risk Assessment ◽  
Quantitative Risk Assessment ◽  
Screening Process ◽  
Qualitative Risk Assessment ◽  
Assessment Standard ◽  
Limiting Value ◽  
Probabilistic Risk

This paper describes a Qualitative/Screening Methodology included in the draft ANS Low Power and Shutdown (LPSD) PRA (Probabilistic Risk Assessment) Standard. The screening methodology can be used to eliminate certain specified shutdown POSs (Plant Operating States) from requiring further quantitative risk assessment in the context of a specified application based on demonstrating that their risk is lower than some predetermined limiting value. The paper also describes a methodology for qualitative risk assessment (QRA) tools that are used to support the screening process. The paper outlines the bases of both methodologies.

A Risk Assessment Tool for Evaluating Geohazards and Fisheries Sensitivity at Pipeline Water Crossings

2008 ◽  
Author(s):  
Laura L. Rempel ◽  
Michael Porter
Keyword(s):  
Risk Assessment ◽  
Assessment Tool ◽  
River Valley ◽  
Risk Assessment Tool ◽  
Oil And Gas Development ◽  
Regulatory Review ◽  
Risk Rating ◽  
Fisheries Resources ◽  
Fisheries Act ◽  
Overall Risk

The Fisheries Act legislates Fisheries & Oceans Canada (DFO) to regulate all development activities affecting fish-bearing waters to ensure no net loss in habitat productivity. To meet the increasing regulatory demands of oil and gas development, DFO is developing a Fisheries Risk Assessment Tool (FRAT). The current focus is along the Mackenzie River Valley, Northwest Territories. The FRAT is applied to proposed pipeline stream crossings and evaluates the risk to fisheries resources from geohazards causing sedimentation impacts. Ultimately, the FRAT may be applied across Canada to streamline DFO’s regulatory process for pipeline stream crossings. The FRAT consists of a Geophysical Database that characterizes physical attributes of the river valley and channel in the vicinity of a crossing, plus a Fisheries Database that characterizes the fisheries resources and habitat of the stream. Algorithms have been developed to quantitatively estimate sedimentation hazard likelihood and fisheries sensitivity, which are coupled in a qualitative risk matrix that assigns an overall risk rating to each stream crossing. The overall risk rating then designates the level of regulatory review and authorization process carried out by DFO under the Fisheries Act. Geohazard algorithms are being calibrated and tested using field data and stream crossing construction scenarios are being incorporated into the risk assessment tool. This paper describes the FRAT and its application in the Mackenzie Valley, and presents preliminary results from risk analysis of pipeline stream crossings.

Risk assessment in dentistry

1998 ◽  
Vol 62 (10) ◽  
pp. 756-761 ◽  
Author(s):  
CW Douglass
Keyword(s):  
Risk Assessment
Sign in / Sign up

Export Citation Format

Share Document