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发表于 2020-8-14 10:51:16
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The EMA Annex 1 Guidance requires recovery testing for classifed spaces. Recovery of a classifed space (Grade
7, 8) from in-use condition to at-rest condition depends on dilution effciency and on air changes (the frequency that
the air in the space is replaced, expressed in air changes per hour). The term “recovery” and the term “air change” do
not apply to Unidirectional Airflow (UAF) spaces (usually Grade 5), where UAF patterns will naturally create extremely
large air change rates. |
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