Japanese Evaluated Nuclear Data Library version 5; JENDL-5

Iwamoto, Osamu; Iwamoto, Nobuyuki; Kunieda, Satoshi; Minato, Futoshi; Nakayama, Shinsuke; Abe, Yutaka*; Tsubakihara, Kosuke*; Okumura, Shin*; Ishizuka, Chikako*; Yoshida, Tadashi*; et al.

Journal of Nuclear Science and Technology, 60(1), p.1 - 60, 2023/01

https://doi.org/10.1080/00223131.2022.2141903

Addendum report of the JHPS expert committee on radiation protection of the lens of the eye, 2; When and how should the dosimetry of beta (3) be made?

Akahane, Keiichi*; Iimoto, Takeshi*; Ichiji, Takeshi*; Iwai, Satoshi*; Oguchi, Hiroyuki*; Ono, Kazuko*; Kawaura, Chiyo*; Kurosawa, Tadahiro*; Tatsuzaki, Hideo*; Tsujimura, Norio; et al.

Hoken Butsuri, 50(4), p.257 - 261, 2015/12

In a mixed field of photon and beta radiations, the same dose assigned to skin is normally assigned to the dose to the lens of the eye as a conservative estimate of H(3). In exceptional cases that a very high beta dose might be imparted of the same order with the dose limit, however, the conservatively biased dose must be too limiting, and thereby an accurate estimate of beta (3) is desirable. This article presents a practical proposal of when and how the dosimetry of beta (3) should be made.

Interim report of the JHPS expert committee on radiation protection of the lens of the eye, 2; The Dosimetry method for the lens of the eye of workers in Japan

Akahane, Keiichi*; Iimoto, Takeshi*; Ichiji, Takeshi*; Iwai, Satoshi*; Oguchi, Hiroyuki*; Ono, Kazuko*; Kawaura, Chiyo*; Tatsuzaki, Hideo*; Tsujimura, Norio; Hamada, Nobuyuki*; et al.

Hoken Butsuri, 49(3), p.153 - 156, 2014/09

https://doi.org/10.5453/jhps.49.153

A brief review is given of the history and methodology of external dosimetry for the lens of the eye. Under the 1989 revision to domestic radiological protection regulations, the concept on the effective dose equivalent and the dose limit to the lens of the eye (150 mSv/y) both introduced in ICRP 1977 recommendations has changed nationwide the external monitoring methodology in non-uniform exposure situations to the trunk of a radiological worker. In such situations, often created by the presence of a protective apron, the worker is required to use at least two personal dosemeters, one worn on the trunk under the apron and the other, typically, at the collar over the apron. The latter dosemeter serves the dual purpose of providing the dose profile across the trunk for improved effective dose equivalent assessment and of estimating the dose to lens of the eye. The greater or appropriate value between (10) and (0.07), given by the dosemeter, is generally used as a surrogate of (3).

The Effect of -sterilization of biofertilizer's carrier on bacterial inoculants survival

Tejima, Kohei*; Yokoyama, Tadashi*; Sato, Katsuya; Takeda, Kiyoko; Narumi, Issei

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 112, 2013/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2012-046.pdf

The Effect of -sterilization of carrier materials made with different types of soils on the shelf life of biofertilizer containing strain USDA110

Tejima, Kohei; Sato, Katsuya; Takeda, Kiyoko; Yokoyama, Tadashi*; Narumi, Issei

Radioisotopes, 61(4), p.161 - 171, 2012/04

https://doi.org/10.3769/radioisotopes.61.161

A biofertilizer is a substance that holds beneficial microorganisms for plant growth in a carrier material. To demonstrate the effect of -sterilization, the survival of the was monitored to assess the shelf life of biofertilizers. As biofertilizer carriers, five kinds of typical Japanese soil-based materials were used. Following the sterilization of carrier materials by -irradiation or autoclaving, was inoculated into each material. The biofertilizer was stored for 12 months at 4C or 30C. After storage, viable inoculants in the biofertilizer were enumerated. Results indicated that inoculant density after storage was greater than the initial density in biofertilizers made from sterilized carriers, whereas it decreased significantly in biofertilizers made from non-sterilized carriers. -sterilization was superior to autoclave sterilization in enhancing inoculant survival in some cases.

The Long-term storage of Rhizobial biofertilizer made from -sterilized carriers

Tejima, Kohei; Yokoyama, Tadashi*; Sato, Katsuya; Narumi, Issei

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 114, 2012/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2011-043.pdf

Phenotypic improvement of USDA 110 into a high temperature tolerant strain in terms of ion-beam microbial mutation-breeding technology

Takeda, Kiyoko*; Tejima, Kohei; Sato, Katsuya; Narumi, Issei; Yokoyama, Tadashi*

JAEA-Review 2010-065, JAEA Takasaki Annual Report 2009, P. 75, 2011/01

https://jopss.jaea.go.jp/pdfdata/JAEA-Review-2010-065.pdf

Detailed design of new material nitric acid recovery evaporator

Yokoyama, Hiroomi*; Kanazawa, Toshio*; Fukuma, Tadashi*; Tamekiyo, Kozo*; Yanagida, Koji*; Furuya, Takashi*; Kono, Hiroshi*; Ito, Keiji*; Shirakura, Takao*; Kashiwara, Shinichiro*; et al.

PNC TN8410 87-086VOL1, 1037 Pages, 1986/09

PNC-TN8410-87-086VOL1.pdf:34.39MB

A detailed design for a New Material Nitric Acid Recovery Evaporator was carried out with a plan to use it to replace an already constructed stainless steel Nitric Acid Recovery Evaporator at the Power Reactor and Nuclear Fuel Development Corporation's Tokai Works. Most of the original Evaporator's conditions such as compliance with applicable laws, standards, structure, treatment performance and operating conditions were maintained when designing the new machine. The material is titanium with the addition of 5% tantalum. The Evaporator was designed with an operational life expectance of 10 years. We have calculated that the new Evaporator will have sufficient strength (including a seismatic design) and have the same evaporative performance as the already constructed one. During design, we referred to the results of already completed basic designs (Phase 1) of New Material Nitric Acid Recovery Evaporators, design and production of small-scale test equipment units, and the development of successful joints between different materials. We also considered manufacturing, installation, trial runs, maintenance, and the specifications for materials used for manufacturing, installation, piping and operation of the new Evaporator.

Reactive-transport evaluation for alteration of granite under alkaline conditions

Kirino, Yusuke*; Nakashima, Satoru*; Yokoyama, Tadashi*; Sasamoto, Hiroshi

no journal, , 

Cementitious grout materials will be used to reduce groundwater inflow during excavation and construction of drifts for deep geological disposal of high lever radioactive waste. High alkaline solution derived from cementitious materials could alter the host rock surrounding the engineered barriers. In the present study, the experiments of interactions between the alkaline solution and the granitic rock (10 10 5 mm block sample) were conducted to understand the evolution of rock properties. The surface of granitic block sample is assumed the fresh fracture surface and the inside of block sample is regarded as rock matrix. Evolution and distribution of alteration products were estimated by both the accelerated laboratory experiments and the computer simulations considering reactive-transport processes.

Phenotypic characterization of high temperature tolerant mutants of generated by ion-beam irradiation

Takeda, Kiyoko; Tejima, Kohei; Sato, Katsuya; Narumi, Issei; Yokoyama, Tadashi*

no journal, , 

no abstracts in English