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Saisu, Motofumi*; Ando, Tadahiko*; Uchiyama, Keizo*; Ueno, Toshihiro*; Takizawa, Koichi*; Endo, Yuji*; Yoshimura, Kazuya; Sanada, Yukihisa
Journal of Radiological Protection, 44(2), p.021518_1 - 021518_16, 2024/06
Morimoto, Makoto; Suto, Masayoshi; Ito, Yoshio; Ito, Hideaki; Aoki, Hiroshi; Odo, Toshihiro
JNC TN9430 2004-002, 60 Pages, 2004/03
JNC-TN9430-2004-002.pdf:2.28MB
This paper describes the result of the sodium purity measurement test on MK-III function tests. This test meant cold traps caught impurity which was carried into the primary and the secondary cooling system by MK-III modification work of the heat transport system, and the amount of impurity was evaluated by plugging temperature before and after the primary and secondary purification operation. Then the following two tests were practiced. Test number and name was shown. (1)SKS-122 Measurement test of purity on primary sodium purification system (2)SKS-211 Measurement test of purity on secondary sodium purification system As the cold traps could catch impurity which made with MK-III modificatlon work, impurity concentrations of sodium in the both of systems were generally within the reference limits of JOY0, while the function tests took in practice for Mk-III. As a result, the amount of impurity Oxygen caught by cold traps calculated approximately 400g in the primary sodium cooling system and approximately 1100g in the secondary one.
Michino, Masanobu; Suzuki, Toshiaki; Aita, Tsuyoshi; Suto, Masayoshi; Saito, Takakazu; Kawahara, Hirotaka; Isozaki, Kazunori; Ito, Hideaki; Inoue, Setsunari; Aoki, Hiroshi; et al.
JNC TN9430 2004-001, 103 Pages, 2004/03
JNC-TN9430-2004-001.pdf:4.06MB
This report describes the results of the primary and secondary cooling system interlock test and the fuel handling system function test, which were done as a part of JOYO MK-3 function test. The items of the test are: (1) Primary and secondary cooling system interlock test (SKS-106,210) (2) Loss of electric power supply test (SKS-116) (3) In-vessel and ex-vessel automatic fuel transportation test (SKS-501,502) As the interlock of the primary and secondary cooling system was changed, the interlock test by the reactor scram and the loss of electric power supply was carried out. The function of the remote automatic fuel handling system was confirmed before the handling of the fuel for MK-3 core configuration. The results of the test satisfied the required performance, and it was confirmed that operation of the primary and secondary cooling system interlock and operation of the fuel handling system in JOYO MK-3 were normal.
Mitsugi, Takeshi; Odo, Toshihiro; Abe, Tomoyuki; Isozaki, Kazunori; Maeda, Koji; Ito, Chikara
Genshiryoku eye, 49(9), 1 Pages, 2003/08
Focusing on the cover layer materials (as the Radon Barrier Materials), which could have the effect to restrain the radon from scattering into the air and the effect of the radiation shielding, we produced the radon barrier materials with crude bentonite on an experimental basis, using the rotary type comprehensive unit for grinding and mixing, through which we carried out the evaluation of the characteristics thereof.
Oba, Toshihiro; Suetsugu, Hidehiko*; Yano, Masaya*; Kato, Chiaki; Yanagihara, Takao
JAERI-Tech 2002-082, 47 Pages, 2003/01
JAERI-Tech-2002-082.pdf:1.87MB
The demonstration test for evaluating reliability of the acid recovery evaporator at Rokkasho Reprocessing Plant has been carried out at JAERI. For the nondestructive measurement of the thickness of heat transfer tubes of the acid recovery evaporator in corrosion test, we have developed thickness measurement apparatus for heat transfer tubes by ultrasonic immersion method with high resolution. The ultrasonic prove in a heat transfer tube can be moved vertically and radially. The results obtained by this apparatus coincident well with those obtained by a destructive method using an optical microscope.
Ishikawa, Kazuyoshi; Kikuchi, Taiji; Isozaki, Futoshi*; Inoue, Hiromi; Oba, Toshihiro; Matsui, Yoshinori; Saito, Takashi; Nakano, Junichi; Tsuji, Hirokazu
JAERI-Tech 2002-061, 69 Pages, 2002/08
JAERI-Tech-2002-061.pdf:12.21MB
Study of irradiation assisted stress corrosion cracking (IASCC) is an important subject for the plant life assessment and extension of the light water reactors (LWRs). It is necessary that initiation mechanism of IASCC should be made clear under combined effect of irradiation, environment and stress in order to understand IASCC phenomena. Under the existing circumstance, Saturated Temperature Capsule (SATCAP) were fabricated for the irradiation test of IASCC studies in Japan Material Testing Reactor (JMTR). SATCAP is the irradiation rig to irradiate materials in high pressure water of controlled chemistry and temperature simulating Boiling water reactors (BWRs) core environment from the new water feelding system of out-of-pile. This report describes (1) investigation of technical problems for the design and fabrication of SATCAP, (2) the tests results of the problems and (3) fabrication and inspection of SATCAP.
Oba, Toshihiro; Yanagihara, Takao; Kato, Chiaki; Hamada, Shozo
JAERI-Tech 2001-059, 36 Pages, 2001/09
The demonstration test for evaluating reliability of the acid recovery evaporator at Rokkasho Reprocessing Plant has been carried out at JAERI. For the nondestructive mesurement of the thickness of heat transfer tubes in the acid recovery evaporator and short tubes used in corrosion test, we have developed ultra sonic thickness measuring apparatus using immersion method with high resolution. This apparatus can measure and record tube thickness automatically with a personal computer. The results obtained by this apparatus are coincident with the results obtained by a destructive method using an optical microscope.
Fuji, Toshihiro*; Yamazaki, Kazuhiko
JAERI-Tech 2000-053, 27 Pages, 2000/10
JAERI-Tech-2000-053.pdf:0.93MB
no abstracts in English
Kobayashi, Kensuke; Ishigami, Tsutomu; ; ; ; ;
Genshiryoku Kogyo, 42(1), p.44 - 53, 1996/00
no abstracts in English
; ; Ueda, Shuzo; ; ; ; ; ; ; ; et al.
JAERI 1236, 96 Pages, 1974/09
no abstracts in English
Okabe, Toshihiro*; Ono, Hiroyuki*; Hatayama, Ichiro*; Waguri, Atsushi*; Sawada, Yuzuru*; Tsugawa, Hidehito*; Ichida, Tadao*; Nakane, Akio*; Sano, Teruo*; Tanaka, Kazuaki*; et al.
no journal, ,
Yanase, Shinichiro*; Sugitsue, Noritake; Ishimori, Yuu; Yokoyama, Kaoru; Ohara, Yoshiyuki; Takahashi, Nobuo; Rong, D.*; Takeda, Hiroshi*; Kochi, Toshinori*; Takami, Toshihiro*; et al.
no journal, ,
no abstracts in English
Saisu, Motofumi*; Uchiyama, Keizo*; Ishii, Toshiaki*; Ando, Tadahiko*; Ueno, Toshihiro*; Nakayama, Kazumi*; Sato, Rina; Yoshimura, Kazuya; Sanada, Yukihisa
no journal, ,
no abstracts in English
