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Paper Abstract and Keywords
Presentation 2014-05-30 11:15
Development of Monitoring Sensors for Aging of Radioactive Waste Storage Containers by using CFRP-FBG and for Leakage from it
Issei Sasaki (Chitose Inst. of Science and Tech.), Masao Gotou (STJ), Makoto Yamada (Osaka Pref. Univ.) OFT2014-14
Abstract (in Japanese) (See Japanese page) 
(in English) This report presents optical fiber sensors for extremely long term monitoring of aging and radiation leakage from radioactive waste storage containers. As is well known, the treatment of radioactive waste caused by the accident of the Fukushima nuclear power plant has become a national issue. It is recently considered keeping them for more than hundred years in special containers designed with tough and effective shielding material. During the period, radiation leakage due to aging or damage caused by natural disasters will be strongly concerned. Therefore super monitoring technology would be needed to watch them under severe conditions. The sensors for the monitoring may be required of ultra long life and must work well stably and automatically on remote for the long period. In this report, sensors are designed applicable to this purpose with using long life material such as optical fiber and carbon filament sheet. In addition, the fact that a magnet suction force becomes weaker when iron metal has rust is used. This implies degradations of iron due to aging. In this report, an optical fiber sensor FBG in a reinforced plastic with carbon sheet (CFRP-FBG) is also used to detect the magnetic force as the wavelength change of Bragg reflection from FBG. This optical phenomena is passive and thus stably works for long time. The other hand, the scintillation fiber sensor which works only by the energy of the radiation power in principle may be almost ideal as radiation leakage monitor stably and automatically working without need of neither light source nor external electric power supply for long time.
Keyword (in Japanese) (See Japanese page) 
(in English) FBG / CFRP-FBG / Radioactive waste / Container / Aging monitor / Iron rust monitor / Radiation leakage monitor /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 64, OFT2014-14, pp. 65-68, May 2014.
Paper # OFT2014-14 
Date of Issue 2014-05-22 (OFT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF OFT2014-14

Conference Information
Committee OFT  
Conference Date 2014-05-29 - 2014-05-30 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2014-05-OFT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Development of Monitoring Sensors for Aging of Radioactive Waste Storage Containers by using CFRP-FBG and for Leakage from it 
Sub Title (in English)  
Keyword(1) FBG  
Keyword(2) CFRP-FBG  
Keyword(3) Radioactive waste  
Keyword(4) Container  
Keyword(5) Aging monitor  
Keyword(6) Iron rust monitor  
Keyword(7) Radiation leakage monitor  
Keyword(8)  
1st Author's Name Issei Sasaki  
1st Author's Affiliation Chitose Institute of Science and Technology (Chitose Inst. of Science and Tech.)
2nd Author's Name Masao Gotou  
2nd Author's Affiliation Sensing Technology Japan (STJ)
3rd Author's Name Makoto Yamada  
3rd Author's Affiliation Osaka Prefecture University (Osaka Pref. Univ.)
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Speaker Author-1 
Date Time 2014-05-30 11:15:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2014-14 
Volume (vol) vol.114 
Number (no) no.64 
Page pp.65-68 
#Pages 4 
Date of Issue 2014-05-22 (OFT) 

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