書誌事項
- タイトル別名
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- Collection efficiency and decontamination factor of HEPA filter.
説明
It is very important in a nuclear air cleaning system that HEPA (High Efficiency Particulate Air) filter is for reduction of releasing amounts of airborne radioactive particles. HEPA filter, by definition, has a minimum collection efficiency of 99.97% for 0.3μm particles. However, DF (Decontamination Factor), which is necessary for safety management, can not be directly derived from the efficiency. And the current standard defined for 0.3μm particles has no scientific justification, because it has been found that the most penetrating particle size through HEPA filter is not always 0.3μm.<br>In the present paper, a numerical experiment was made in order to estimate a relationship between DF and the efficiency. And new standard, in which the minimum DF is able to be easily obtained, was proposed. In the multistage filtration system, it was found that lower values of DF was possible to be experimentally indicated in the second and the third stages, even if the collection performance of the each filter is the same.
収録刊行物
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- 保健物理
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保健物理 21 (4), 237-244, 1986
一般社団法人日本保健物理学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282679266392320
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- NII論文ID
- 130000793103
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- COI
- 1:CAS:528:DyaL2sXit1agurw%3D
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- ISSN
- 18847560
- 03676110
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
