Statistical properties of material strength for reliability evaluation of components of fast reactors; Austenitic stainless steels

Takaya, Shigeru; Sasaki, Naoto*; Tomobe, Masato*

JAEA-Data/Code 2015-002, 54 Pages, 2015/03

JAEA-Data-Code-2015-002.pdf:25.53MB

Many efforts have been made to implement the System Based Code concept of which objective is to optimize margins dispersed in several codes and standards. Failure probability is expected to be a promising quantitative index for optimization of margins, and statistical information for random variables is needed to evaluate failure probability. Statistical information of material strength has not been provided enough yet. In this report, the statistical properties of material strength was estimated for SUS304, 316FR steel and some other austenitic stainless steels. These materials are registered in the JSME code of design and construction of fast reactors, so test data used for developing the code were used as much as possible in this report.