[1H01-06] Radiation Transport Behavior

[1H06] Discussion on the Standardization of Shielding Material focusing on Shielding Concrete (24)

Progress of standard concrete composition preparation for shielding calculation.

*Mikihiro Nakata¹, Yoshihiro Hirao ², Toshio Amano Amano³, Koichi Okuno⁴, Toshinobu Maenaka⁵, Masahiro Taniguchi ⁶, Kosako Kazuaki⁷, Tatsuya Osawa⁸, Koji Oishi ⁹, Yukio Sakamoto ¹⁰ (1. NDC, 2. NMRI, 3. CTC, 4. HAZAMA ANDO, 5. Takenaka Corporation , 6. TAISEI, 7. Shimizu, 8. MHI, 9. JER, 10. ATOX)

Keywords:Shielding, Shielding calculations, material compositions of concrete

A working group of Standards Committee in Atomic Energy Society of Japan has been providing the document of standard material compositions of concrete for shielding calculations. In this presentation, we reorganize the matters that were considered and examined in this study of concrete composition which is appropriate for shielding calculation and does not contradict in concrete engineering. We will also introduce the results of further evaluation of concrete composition data used in the examination and dose rate effect evaluation on concrete elemental composition variation investigated the progress since the presentation in autumn 2023.