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

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JAEA-Testing 2011-007 JAEA-Testing 2011-007 (5) Discharge the supernatant, while leaving the precipitate Discharge the water in the plastic tank when it meets the criteria for discharge with respect to radioactivity concentration and pH. In accordance with the section 4.(2)(a), remove mud and fallen leaves accumulated in the discharge flow path such as drain gutter around the swimming pool and foot washing pond to discharge water compliant to the criteria. Put collected mud and fallen leaves into plastic bags with a serial number. The mouth of the bags shall be twisted, folded back and closed with a banding band. The bags shall be put into additional plastic bags, forming a double packing. The outer bags shall also be twisted, folded back and closed with a banding band. Measure the dose rates of each bag at the surface using a radiation detector. If possible, weigh the bag (weight by the kilogram is acceptable). Write down the results in the form, “Record 7: Dose rate measured on the surface of bags that contains mud accumulated at the discharge flow path”. Use medium capacity engine pumps for the discharge. Take care to pump up as little precipitate as possible, and discharge it through a bag filter. Pumping the supernatant Bag filter Filtrated water with the bag filter (6) Treat the precipitate left on the bottom of the 1 ton plastic tanks Apply filtering to the precipitate to remove water as much as possible for disposal. Pump up precipitate accumulated on the bottom of the 1 ton plastic tanks with a small capacity engine pump into a container covered with a sheet (or basket) at a low flow rate. Prepare two sets of tray to receive the filtrated water and a - 145 - - 145 -
container (or basket) stand. Prepare a destination tray in advance Tray to receive filtrated water JAEA-Testing 2011-007 JAEA-Testing 2011-007 Prepare two sets of a filter stand in a tray. Prepare a filter by putting a sheet on the net basket or container on the filter stand. Filter stand - 146 - - 146 - Because turbid liquid containing high concentration of radioactive materials is produced at first in the filtration using a sheet, move the filter to the fresh empty receiving tray when the filtrated water has become clear. Transfer sludge using a small pump Tray for collecting initially filtrated water Sheet Use Jacquard or Flat sheet. The former is coarser, and thus shows faster filtration. Precipitate receiving net basket covered with a sheet. Use a basket with a net side and bottom.
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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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Page 86 and 87: (2)放射性物質の測定方法 J
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Page 94 and 95: 1. Introduction JAEA-Testing 2011-0
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Page 108 and 109: Materials and tools (2) Pumps and r
Page 110 and 111: For the filtration of precipitate J
Page 112 and 113: Survey meter (1) Personal dosimeter
Page 116 and 117: 4. Start decontamination procedures
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Page 152 and 153: (9) Clean the swimming pool wall JA
Page 158 and 159: 5. Final finishing JAEA-Testing 201
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Page 164 and 165: 6. References JAEA-Testing 2011-007
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Page 172: 国際単位系(SI) 国際単位系
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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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