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Analysis of Common Cause Failures Coupling Factors and Mechanics from Ageing Point of View
The investigation of ageing phenomenon impact on CCF potential was the main goal of Task 5 of the EC JRC Ageing PSA (APSA) Network. This report is devoted to investigation of close links between CCF potential and ageing, and provides expert opinions (based on the questionnaire answers) regarding connection between common cause failure potential and ageing phenomenon, as the influence of the individual prevention factors against CCF. In the questionnaire, two main topics were discussed: -What is the strength of relation between the individual CCF coupling factors (contributing to total CCF potential) and ageing phenomenon? -For those CCF coupling factors, which have been evaluated as coincident with ageing phenomenon (at least medium level of coincidence) - what is the effect of CCF prevention measures on the coupling factor versus ageing relation? A specific color scale was used to specify the strength value of CCF coupling factor and ageing phenomenon relation and to define the strength of potential influence of prevention factor on the strength of link between CCF potential and ageing phenomena. The strength value assigned in the table was commented (reflection in operational experience, assumptions etc.). The strength between CCF coupling factors and ageing and the influence of the individual prevention factors against CCF was evaluated based on available operational experience and expert judgments. ; JRC.F.5-Nuclear Reactor Safety Assessment
Analysis of Common Cause Failures Coupling Factors and Mechanics from Ageing Point of View
The investigation of ageing phenomenon impact on CCF potential was the main goal of Task 5 of the EC JRC Ageing PSA (APSA) Network. This report is devoted to investigation of close links between CCF potential and ageing, and provides expert opinions (based on the questionnaire answers) regarding connection between common cause failure potential and ageing phenomenon, as the influence of the individual prevention factors against CCF. In the questionnaire, two main topics were discussed: -What is the strength of relation between the individual CCF coupling factors (contributing to total CCF potential) and ageing phenomenon? -For those CCF coupling factors, which have been evaluated as coincident with ageing phenomenon (at least medium level of coincidence) - what is the effect of CCF prevention measures on the coupling factor versus ageing relation? A specific color scale was used to specify the strength value of CCF coupling factor and ageing phenomenon relation and to define the strength of potential influence of prevention factor on the strength of link between CCF potential and ageing phenomena. The strength value assigned in the table was commented (reflection in operational experience, assumptions etc.). The strength between CCF coupling factors and ageing and the influence of the individual prevention factors against CCF was evaluated based on available operational experience and expert judgments. ; JRC.F.5-Nuclear Reactor Safety Assessment
Analysis of Common Cause Failures Coupling Factors and Mechanics from Ageing Point of View
HOLY Jaroslav (author) / NITOI MIRELA (author) / DINU Irina (author) / BURGAZZI Luciano (author)
2010-08-10
Miscellaneous
Electronic Resource
English
DDC:
690
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