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1 Jpn. J. Health Phys., 46 (2) (2011) * 1 * 2 * 2 * Development and Operational Results of a Real-time Remote Biological Information Monitoring Device for the Workers Wearing Protective Clothes at a Nuclear Facility Naoki TAKAHASHI,* 1 Joo-Young LEE,* 2 Hitoshi WAKABAYASHI* 2 and Yutaka TOCHIHARA* 2 Workers must wear a respirator and protective clothing to prevent inhalation and contamination by radioactive materials when carrying out certain inspection, maintenance activities at nuclear facilities and other emergency situations. Temperature and humidity increase with time within the protective clothing during such work. This is because the protective clothing is necessarily impermeable so that heat and perspiration caused by physical labor remain. Therefore, the worker s body temperature and related heatstroke risk gradually increase. To date, workers wearing the protective clothing have been supervised by time management and individual subjective information. This conventional management method may physiological information (including measured worker s infrared tympanic temperature and heart rate) with individual subjective information, in order to reduce the risk of heatstroke. To this end, a remote (heat strain) monitoring device has operational results obtained under actual working conditions. KEY WORDS: remote monitoring, heat strain, heat stroke, protective clothing, infrared tympanic temperature, rectal temperature, nuclear facility. I. * Conversion Technology Section, Tokai Reprocessing Technology Development Center, Nuclear Fuel Cycle Engineering Laboratories, Japan Atomic Energy Agency; 4 33 Muramatsu Tokai-mura, Nakagun, Ibaraki , Japan. takahashi.naoki11@jaea.go.jp * Faculty of Design, Kyushu University; Shiobaru, Minami-ku, Fukuoka , Japan. Fig. 1 1, 2) 80 3)

Development and Operational Results of a Real-time Remote Biological Information Monitoring Device for the Workers Wearing Protective Clothes at a Nuclear Facility 141

2 Development and Operational Results of a Real-time Remote Biological Information Monitoring Device for the Workers Wearing Protective Clothes at a Nuclear Facility 141 Fig. 1 Typical protective clothing for nuclear facilities. 4) 5, 6) 7) 8) 5) 9) 20 10) ) II 1. ACGIH American Conference of Governmental Industrial Hygienists 12)

3 142 Naoki TAKAHASHI, Joo-Young LEE, Hitoshi WAKABAYASHI and Yutaka TOCHIHARA Fig. 2 13, 14) RFID Radio Frequency Identi cation Fig. 2 Ear plug type temperature measurement sensor (above) and wearing conditions (below). Fig. 3 The developed device (above) and wearing conditions (below).

4 Development and Operational Results of a Real-time Remote Biological Information Monitoring Device for the Workers Wearing Protective Clothes at a Nuclear Facility 143 Fig mm RFID mm ID SD PC ) 3 3 Fig. 4 Fig. 5 III 1

5 144 Naoki TAKAHASHI, Joo-Young LEE, Hitoshi WAKABAYASHI and Yutaka TOCHIHARA Fig. 4 The image of working management using the management device. Fig. 5 Visible of the measurement data. 13 cm kg W cm 69 kg

6 Development and Operational Results of a Real-time Remote Biological Information Monitoring Device for the Workers Wearing Protective Clothes at a Nuclear Facility Fig. 6 Fig. 6 from casing). IV 1. Fig. 7 Fig. 7 Fig Fig. 7 Change of rectal temperature and infrared tympanic temperature. 16) ACGIH 2. Fig

7 146 Naoki TAKAHASHI, Joo-Young LEE, Hitoshi WAKABAYASHI and Yutaka TOCHIHARA V Fig. 8 Actual measurement results in the workplace. (above: infrared tympanic temperature and heart rate change, below: temperature and humidity change inside the protective clothing) ACGIH ) 25, (1990). 2) II 26, (1991). 3) C. L. LIM, C. BYRNE and J. KW. LEE; Human thermoregulation and measurement of boby temperature in exercise and clinical settings, Ann. Acad. Med., 37, (4), (2008).

8 Development and Operational Results of a Real-time Remote Biological Information Monitoring Device for the Workers Wearing Protective Clothes at a Nuclear Facility 147 4) M. A. KOLAKA, L. LEVINE and L. A. STEPHENSON; Use of an ingestible telemetry sensor to measure core temperature under chemical protective clothing, J. Therm. Biol., 22 (4/5) (1997). 5) 41 (10), (2000). 6) 52 (12), 2 10 (2006). 7) The Annals of physiological anthropology, 12 (1), (1993). 8) 41 (1), ) 21 Available at: ) Available at: ) 51 (8), 9 16 (2005). 12) American Conference of Governmental Industrial Hygienists (ACGIH) 2007; Threshold Limit Values for chemical Substance and Physical Agents and Biological Exposure Indices. USA. 13) Heiner Brinnel and Michel Cabanac; Tympanic temperature is a core temperature in humans, J. Therm. Biol., 14 (1), (1989). 14) ) D. J. BRAKE and G. P. BATES; Deep body core temperatures in industrial workers under thermal stress, J. Occup. Environ. Med., 44 (2), (2002). 16) E. R. NADEL, S. M. HORVATH; Comparison of tympanic memberane and deep body temperatures in man, Life Sci., 9, (1970) MOX takahashi.naoki11@jaea.go.jp

Corrections of the Results of Airborne Monitoring Surveys by MEXT and Ibaraki Prefecture

August 31, 2011 Corrections of the Results of Airborne Monitoring Surveys by MEXT and Ibaraki Prefecture The results of airborne monitoring survey by MEXT and Ibaraki prefecture released on August 30 contained