CGR behavior of low carbon stainless steel of hardened heat affected zone in PLR piping weld joints

Ando, Masami*; Nakata, Kiyotomo*; Ito, Mikiro*; Tanaka, Norihiko*; Koshiishi, Masato*; Obata, Ryoji*; Miwa, Yukio; Kaji, Yoshiyuki; Hayakawa, Masao*

Proceedings of 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems (CD-ROM), 16 Pages, 2007/00

Long term SCC growth tests for nuclear grade stainless steel (SUS316(NG)) were conducted in a simulated BWR environment using specimens taken from mock-up PLR piping weld joints to obtain the crack growth rate (CGR) of the hardened heat affected zone due to weld shrinkage around weld, in order to develop the CGR curve which will be used for flaw evaluation. The piping joints were made of forged and extracted materials with several welding techniques. The obtained CGRs were higher than that of solution heat treated material. The CGRs for hardened SUS316(NG) have a correlation with hardness regardless of materials and welding techniques. The CGRs increased with hardness in the range from 210 to 250 Hv. The CGR acceleration mechanism in hardened HAZ of low carbon stainless steel was estimated based on the strain distribution and the AFM image around a SCC crack tip. It was suggested that the interaction of the plastic strain gradient at a crack tip and local strain along GBs.

Evaluation of energy response of neutron rem monitor applied to high-energy accelerator facilities

Nakane, Yoshihiro; Harada, Yasunori; Sakamoto, Yukio; Oguri, Tomomi*; Yoshizawa, Michio; Takahashi, Fumiaki; Ishikura, Takeshi*; Fujimoto, Toshiaki*; Tanaka, Susumu; Sasamoto, Nobuo

JAERI-Tech 2003-011, 37 Pages, 2003/03

JAERI-Tech-2003-011.pdf:1.73MB

no abstracts in English

Shielding experiments and analyses on proton accelerator facility at TIARA

Nakashima, Hiroshi; Sakamoto, Yukio*; Tanaka, Shunichi; Tanaka, Susumu; Baba, Mamoru*; Nakamura, Takashi*; Hirayama, Hideo*; Shin, Kazuo*; JAERI-Universities Collaboration Working Group for Accelerator Shielding Study

Proceedings of 6th International Meeting on Nuclear Applications of Accelerator Technology (AccApp '03), p.959 - 968, 2003/00

In order to validate shielding design methods on proton accelerator facilities, a series of shielding experiments in several tens of MeV energy region were carried out at the Takasaki Ion Accelerators for Advanced Radiation Application (TIARA) of Japan Atomic Energy Research Institute (JAERI). The experiments include thick target neutron yield (TTY) measurements by charged particles, deep penetration experiments on concrete, steel and polyethylene shields using p-Li monoenergetic neutron source and radiation streaming experiment at a labyrinth of TIARA using p-Cu white neutron source. These experimental results are compared with calculation results with some high-energy particle transport codes such as MCNPX and NMTC/JAERI. The TTY measurements were analyzed by a code developed by Shin with a moving source model, and the streaming experiment was also analyzed by the DUCT-III code based on Shin's equation. This paper reviews the experimental results and the analyses on the results.

Analyses of neutron and ray measurements in a target room of several tens MeV Proton Facility

Nakashima, Hiroshi; Masumura, Tomomi*; Tanaka, Susumu; Sakamoto, Yukio; Takada, Hiroshi; Tanaka, Shunichi; Nakane, Yoshihiro; Meigo, Shinichiro; Nakamura, Takashi*; Kurosawa, Tadahiro*; et al.

Journal of Nuclear Science and Technology, 37(Suppl.1), p.192 - 196, 2000/03

https://doi.org/10.1080/00223131.2000.10874873

no abstracts in English

A Study of existing experimental data and validation process for evaluated high energy nuclear data; Report of task force on integral test for JENDEL high energy file in japanese nuclear data committee

Oyama, Yukio; *; Watanabe, Yukinobu*; Kawano, Toshihiko*; Numajiri, M.*; Ueki, Kotaro*; *; Yamano, Naoki*; Kosako, Kazuaki*; *; et al.

JAERI-Review 98-020, 130 Pages, 1998/11

JAERI-Review-98-020.pdf:6.4MB

no abstracts in English

Measurements of neutrons and photons Leaked through three-legs labyrinth from 68-MeV proton target room

; Nakane, Yoshihiro; Sakamoto, Yukio; Nakashima, Hiroshi; Meigo, Shinichiro; Tanaka, Shunichi; Kurosawa, Tadahiro*; Nakamura, Takashi*; Nakao, Noriaki*; Hirayama, Hideo*; et al.

Proc. of 1998 ANS Radiat. Protection and Shielding Division Topical Conf. Technol. for the New Century, 2, p.164 - 169, 1998/00

no abstracts in English

Measurement of reaction rate distributions in a plastic phantom irradiated by 40-and 65-MeV guasi-monoenergetic neutrons

Nakane, Yoshihiro; ; Sakamoto, Yukio; Tanaka, Shunichi

Radiat. Meas., 28(1-6), p.479 - 482, 1997/00

https://doi.org/10.1016/S1350-4487(97)00124-8

no abstracts in English

Measurement of radiation streaming in labyrinth; Measurement of radiation streaming in labyrinth at light ion room 2

Tanaka, Susumu; Nakashima, Hiroshi; Nakane, Yoshihiro; Sakamoto, Yukio; Meigo, Shinichiro; Tanaka, Shunichi; Takada, Masashi*; Kurosawa, Tadahiro*; Nakamura, Takashi*; Nakao, Noriaki*; et al.

Genshikaku Kenkyu, 41(3), p.101 - 112, 1996/06

no abstracts in English

Reaction rate distributions in a plastic phantom

Nakane, Yoshihiro; ; Sakamoto, Yukio; Tanaka, Shunichi

Genshikaku Kenkyu, 41(3), p.83 - 87, 1996/00

no abstracts in English

Transmission through shields of quasi-monoenergetic neutrons generated by 43- and 68-MeV protons,II; Iron shielding experiment and analysis for investigating calculational method and cross-section data

; Nakao, Noriaki*; Tanaka, Shunichi; Nakamura, Takashi*; Shin, Kazuo*; Tanaka, Susumu; Takada, Hiroshi; Meigo, Shinichiro; Nakane, Yoshihiro; Sakamoto, Yukio; et al.

Nuclear Science and Engineering, 124(2), p.243 - 257, 1996/00

https://doi.org/10.13182/NSE96-A28575

no abstracts in English