[1D01-06] Radiation Shielding Analysis

[1D06] Discussion on the Standardization of Shielding Material focusing on Concrete (17)

Approach to Specified Concrete Composition for Shielding Design

*Mikihiro Nakata¹, Toshihisa Tsukiyama², Koichi Okuno³, Toshinobu Maenaka⁴ (1. MHI NSE, 2. HGNE, 3. Hazama Andou Corp. , 4. Takenaka Corp.)

Keywords:Shielding, Concrete, Chemical Conposition, Decay rate, Dose rate

The shielding material standard working group of the shielding subcommittee of the AESJ standard committee is examining the concrete composition for shielding design prescribed in the standard. In this report, we introduce the state of study on the proposed concrete composition and the selection method of the composition according to the application condition. In addition, the trend of neutron decay rate of each composition proposal is shown.