THE FlRST ATOMlC POWER INDUSTRY GROUP
■ 随 想
■ 紹 介
■ FAPIG Activities
Cover Design：Kim, Min-Gun
Tadao Hashimoto, Toru Hasegawa, Keisuke Fukumoto, Yasushi Ooki
In the radiation facilities such as nuclear power plants, surface contamination
of the people accessing or articles conveyed in and out of the radiation
controlled areas is detected and monitored by installing contamination
monitors at the boundary of controlled areas and uncontrolled areas
against the expansion of the radioactive materials to out of the facilities.
It is required for the surface contamination of articles to be tightened
of control criteria as “Guidelines for discrimination ways of nonradioactive
waste (not classified as radioactive waste) generated from nuclear power
plants” (hereinafter referred to as “the Guideline”) was established
by the Nuclear and Industrial Safety Agency of the Ministry of Economy,
Trade and Industry in August, 2005. It predicts that the control criteria
of monitors other than article monitors are also tightened in the future.
KEYWORDS：article transfer monitor, clothing monitor, body surface contamination monitor
Katsuhiro Haga, Hiroyuki Kogawa, Takashi Wakui, Kohei Hanano, Masatoshi
The construction of the mercury target system of 1MW spallation neutron source in J-PARC was completed and now all the system is ready to receive the first proton beam. In this paper, the outline of the mercury target system and several topics appeared in the course of the system fabrication and assembling are presented; i.e. the residual stress in the beam window caused by welding process in the target vessel and its improved fabrication process, the R&D of the rotated permanent magnet pump (PM pump) for the mercury circulation system and the target trolley installation.
KEYWORDS：mercury target, spallation neutron source, J-PARC project, residual stress, PM pump, target trolley
The Air Cooled Heat Exchangers are widely used for condensation and
cooling of various fluids (steam, gas, water, oil, etc.) in various
fields (petrochemical, power generation, energy recycle, etc.) and it
is not exceptional equipment for nuclear energy field.
KEYWORDS：air cooled, heat exchanger, condenser, fin tube, embedded fin, tube bundle
Hiroyuki Kogawa, Hidetaka Kinoshita, Katsuhiro Haga, Takashi Wakui
Materials and Life Science Facility is one of the experimental facilities of Japan Proton Accelerator Research Complex (J-PARC). The mercury circulation system and the target exchange truck for the spallation neutron source of J-PARC are presented in this paper. The functions of the mercury circulation system are to supply mercury to the target vessel, and to cool down the mercury that is heated by proton beam injection. The target exchange truck is used to remove a used target vessel and to install a new target vessel by remote operation.
KEYWORDS：proton accelerator, J-PARC, spallation neutron, mercury circulation, target replacement, remote operation
Shinji Miura, Kaoru Kikuchi, Syuichi Ueno, Taku Ohira, Hiroyuki Sasaki,
Shuji Ishiguro, Roger Asay, Richard Kohlmann
Novel and unprecedented ion exchange resin cleaning system, for use in BWR plants and featuring a vibration separator and basic design factors of Radiological Solutions, Inc., had been delivered to Tokai No. 2 Power Station, Japan Atomic Power Company, in October 2005. This compactly-designed system effectively separates crud and resin fines from ion exchange resins, with no clogging of separation screens. It generates minimized waste liquid and has a specially designed over-pack cleaning tank. The system has been in operation for about 2 years and half now and favorable operational data, such as crud and sulfate concentration decrease in feed water and reactor water respectively, and evaluation results have been reported from Japan Atomic Power Company and so on.
KEYWORDS：ion exchange resin cleaning system, feed water, reactor water
Atsuhisa Takahashi, Michinori Kutami, Seiya Yamazaki
The Fujitsu Group has been conducting a variety of environmental activities, thinking that environmental management is one of the most important issues as the corporate value. And the environmental activities have been promoted in all of the business division under the slogan, “We Make Every Activities Green”. Moreover, from December 2007, Fujitsu Group started a new project called Green Policy Innovation to address recent environmental global issues. This project aims to reduce the environmental burdens of customers through our Green IT. This paper introduces the framework of the Fujitsu Group's environmental policy and gives an overview of the Group's environmental management and activities.
KEYWORDS：environmental management, green IT