Nuclear Techniques ›› 2014, Vol. 37 ›› Issue (07): 70601-070601.doi: 10.11889/j.0253-3219.2014.hjs.37.070601

• NUCLEAR ENERGY SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Benefit for the analysis of P-T limit curve of a home-made RPV using RTT0 instead of RTNDT

CAO Yupeng1,2 HE Yinbiao2 HUI Hu1 LI Hui2 XUAN Fuzhen1   

  1. 1(Key Laboratory of Pressure System and Safety, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China) 2(Department of Component Research and Design, Shanghai Nuclear Engineering Research and Design Institute, Shanghai 200233, China)
  • Received:2014-01-28 Revised:2014-04-18 Online:2014-07-10 Published:2014-07-07

Abstract: Background: The leak test temperature and startup and shutdown pressure-temperatue (P-T) limits for reactor pressure vessel are specified in the ASME code and in the U.S. Part 50 to Title 10 of the Code of Federal Regulations. The ASME Code Case N-629 has been integrated into the 2013 ASME code. The KIc curves indexed by RTNDT and RTT0 are both accepted by the ASME code. Purpose: The application of KIc-RTT0 curve to the determination of the P-T curve needs to be compared against the results using KIc-RTNDT and KIR-RTNDT curves. Methods: The P-T limit curves at the design life of 40 years and in the extended period are made for a home-made Reactor pressure vessel (RPV) which is taken as an example. Results: It is indicated that there exists great difference among results using the three methods. The P-T operating window based on KIc-RTT0 is widened. The brittle facture can not occur during the normal start-up and cool-down transients. The P-T limit curves from KIc-RTNDT curve are relatively conservative while the results based on KIR-RTNDT curve are too conservative. Conclusion: The analysis in this paper provides the technical support to the operation and the potentional of life extension for this RPV.

Key words: Reactor pressure vessel, P-T limit curve, Master curve, ASTM E1921