Paper Title:
Determination of Pressure-Temperature Limit Curves Using Deterministic and Probabilistic Approaches
  Abstract

Reactor pressure vessel (RPV) is the most critical component in nuclear power plant. RPV is subjected to radiation embrittlement, which is characterized as neutron fluence-dependent reduction in fracture toughness of the material. Therefore, risk for potential failure of RPV increases as operating time and fluence level increase. To prevent the potential failure, it is requested for RPV to operate in accordance with pressure-temperature (P-T) limit curve during operation. However, it has been reported that P-T limit curve which is typically developed in accordance with the procedure in ASME code is too conservative. Therefore, in order to investigate the conservatism of current P-T limit curve and develop more realistic one, probabilistic approach based on the risk was utilized in this paper. The resulting P-T limit curve is very higher than that from deterministic approach, and can be used as alternative operation limit of the RPV, because probabilistic P-T limit curve seems to have enough safety margin for potential failure of RPV.

  Info
Periodical
Key Engineering Materials (Volumes 306-308)
Edited by
Ichsan Setya Putra and Djoko Suharto
Pages
333-338
DOI
10.4028/www.scientific.net/KEM.306-308.333
Citation
S. G. Jung, I. G. Park, C. S. Lee, H. S. Kim, T. E. Jin, "Determination of Pressure-Temperature Limit Curves Using Deterministic and Probabilistic Approaches", Key Engineering Materials, Vols. 306-308, pp. 333-338, 2006
Online since
March 2006
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Price
$32.00
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