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

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Record 13: Radioactivity concentration in the pool water and precipitate after the 2 nd treatment Month Day Year Measurement date: Radioactivity concentration(Bq/L) Discharge Sampling time 1 t plastic tank No. Cesium-134 Cesium-137 Total : (AM, PM) 1 Yes ・ No : (AM, PM) 2 Yes ・ No : (AM, PM) 3 Yes ・ No : (AM, PM) 4 Yes ・ No : (AM, PM) 5 Yes ・ No : (AM, PM) 6 Yes ・ No : (AM, PM) 7 Yes ・ No : (AM, PM) 8 Yes ・ No : (AM, PM) 9 Yes ・ No : (AM, PM) 10 Yes ・ No : (AM, PM) 11 Yes ・ No : (AM, PM) 12 Yes ・ No : (AM, PM) 13 Yes ・ No : (AM, PM) 14 Yes ・ No : (AM, PM) 15 Yes ・ No : (AM, PM) 16 Yes ・ No : (AM, PM) 17 Yes ・ No : (AM, PM) 18 Yes ・ No : (AM, PM) 19 Yes ・ No : (AM, PM) 20 Yes ・ No JAEA-Testing 2011-007 JAEA-Testing 2011-007 : (AM, PM) 21 Yes ・ No : (AM, PM) 22 Yes ・ No : (AM, PM) 23 Yes ・ No : (AM, PM) 24 Yes ・ No - - 161 ~ 162 〜 162 --
JAEA-Testing 2011-007 JAEA-Testing 2011-007 (e) 3 rd treatment of the supernatant and precipitate When the radioactivity concentration of the supernatant after secondary treatment is higher than the criteria for discharge, transfer the water in the 1 ton plastic tank to 100 L tank using a small capacity engine pump where 3rd treatment is conducted using the zeolite (photos shown below). Measure the radioactivity of the transferred water and write down the measurement results in the form, “Record 14: Radioactivity concentration in the supernatant before the 3rd treatment”. Add zeolite to the water in the 100 L tank. No flocculant (PAC) is used in the 3rd treatment. Transfer supernatant with the radioactivity concentration higher than the criteria for discharge to the 100 L tank using a small capacity engine pump, and provide 3 rd treatment using the zeolite. Add zeolite only for the 3 rd treatment Treat the precipitate left on the bottom of the tank using the same method as that applied to the precipitate left on the bottom of the plastic tank, as described in the section “(6) Treat the precipitate left on the bottom of the 1 ton plastic tanks”. Keep at rest for one night and measure radioactivity concentration of filtrated water accumulated in the tray, and write down the results in the form, “Record 15: Radioactivity concentration in the water after filtration with a filter cloth”. When the radioactivity concentration is lower than that in the criteria for discharge, discharge the water in the tray. When it is higher, dilute the water with the tap water, and discharge it after checking for the compliance. - 163 - - 163 -
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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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(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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JAEA-Testing-2011-007.pdf:46.74MB - 日本原子力研究開発機構

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