JAEA-Testing-2011-007.pdf:46.74MB - 日本原子力研究開発機構

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6. References JAEA-Testing 2011-007 JAEA-Testing 2011-007 (1) Criteria that you should be familiar to (a) Utilization of swimming pools Utilization of outdoor swimming pool at schools in Fukushima (July 16, 2011, MEXT) Guideline for radioactivity concentration in swimming areas (June 24, 2011, MOE) (b) Quality of swimming pool water at schools School environmental health standard (march 31, 2011, MEXT Notice No. 60) Criteria for the school environmental health (February 10, 2004, MEXT decision) (c) School life Basis of the tentative policy issued on May 27, 2011, stating that radiological exposure at schools shall be suppressed below 1 mSv in a year (July 20, 2011, MEXT) (d) Tap water Measures against accidents in Fukushima Daiichi and Daini Nuclear Power Plants (March 19, 2011, MHLW) (e) Waste Policy on the treatment of wastes and refuses due to disaster in Fukushima (June 23, MOE) Policy on handling of byproducts from supply water purification/sewage treatment processes in which radioactivity was detected (June 16, 2011, NISA) (f) Effluent Water Quality Pollution Control Act (December 25, 1970, Law No. 138) - 183 - - 183 -
(2) Radioactivity measurement methods JAEA-Testing 2011-007 JAEA-Testing 2011-007 There are several types of radioactivity measurement method, and each of these methods has its own merits and demerits. Here, we listed features of two typical types of detector, germanium (Ge) solid-state detector and sodium iodine (NaI) scintillation counter. Description Operability Accuracy Cost Other remarks Ge solid-state detector NaI(Tl) scintillation counter (Commercially available as ・Place a sample cell on the detector within a radiation shield, and output signals are subjected to the pulse-height discriminator. ・Operation by experts ・Difficult to quantify at the site ◎ ・Standard radiation measurement method ・Superior energy discrimination capability ・Detection limit (10 minutes measurement): < 30Bq/L ・> 10 M Yen ・10-20 thousands yen/sample when commissioned to specialized institutions (e.g. Institute of Radiation measurements) × - 184 184 - food monitor, etc.) ・Place a sample cell on the detector within a radiation shield, and output signals are subjected to the pulse-height discriminator. ・Some types are operable by non-expert operators ・Standard radiation measurement method ・Good energy discrimination capability ・Detection limit (10 minutes measurement): < 60Bq/L ・2-5 M Yen ・Aloca: CAN-OSP-NAI ・ORTC: FoodGurard-1TM ・Berthold: LB200,LB2045 ・OHYO KOKEN: FNF-401 ○ ○ ○
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本レポートは独立行政法
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JAEA-Testing 2011-007 Guide for Dec
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近藤伸次福島技術本部
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菅野良信がんばろう福島
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JAEA-Testing 2011-007 JAEA-Testing
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3.準備をします JAEA-Testing 2
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「記録-1 作業開始前のプ
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「記録-3 (作業開始前)作業
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「記録-5 作業スケジュー
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「記録-10 1トンポリタンク
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「記録-12 プール水+沈殿物
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「記録-15 ろ布によるろ過
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「記録-18 廃棄物の一時保
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(2)放射性物質の測定方法 J
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1. Introduction JAEA-Testing 2011-0
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2. What should be checked at first?
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Record 3: Ambient dose rate map in
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Materials and tools (2) Pumps and r
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For the filtration of precipitate J
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Survey meter (1) Personal dosimeter
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JAEA-Testing-2011-007.pdf:46.74MB - 日本原子力研究開発機構

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