Title of article :
Thermal–hydraulic passive system reliability-based design approach
Author/Authors :
Luciano Burgazzi، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
8
From page :
1250
To page :
1257
Abstract :
In order to enhance the safety of new advanced reactors, optimization of the design of the implemented passive systems is required. Therefore, a reliability-based approach to the design of a thermal–hydraulic passive system is being considered, and a limit state function (LSF)-based approach elicited from mechanical reliability is developed. The concept of functional failure, i.e., the possibility that the load will exceed the capacity in a reliability physics framework, in terms of performance parameter is introduced here for the reliability evaluation of a natural circulation passive system, designed for decay heat removal of innovative light water reactors. Water flow rate circulating through the system is selected as passive system performance characteristic parameter and the related limit state or performance function is defined. The probability of failure of the system is assessed in terms of safety margin, corresponding to the LSF. Results help the designer to determine the allowable limits or set the safety margin for the system operation parameters, to meet the safety and reliability requirements.
Keywords :
Passive systems , Safety margin , reliability , Natural circulation
Journal title :
Reliability Engineering and System Safety
Serial Year :
2007
Journal title :
Reliability Engineering and System Safety
Record number :
1187673
Link To Document :
بازگشت