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1、4.19 Where processing lines are included in closed isolators, grade A conditions should be ensured with first air protection in the critical zone and unidirectional airflow that sweeps over and away from exposed products during processing
如果加工生产线在封闭式隔离器中,则应确保 A 级条件,关键区域有首过气流保护,加工过程中单向气流扫过并远离暴露的产品
问题点:与前句“在进行简单操作的封闭隔离器中,气流可能不是完全单向的,但应使湍流最小,并且不会增加暴露产品污染的风险”不一致。对于隔离器,什么情况下需要单向流呢?
2、4.32 *performed according to a risk assessment documented as part of the CCS. However, required for filling zones supplied with unidirectional airflow (e.g. when filling terminally sterilised products or background to grade A and RABS). For grades with non-unidirectional airflow, a measurement of recovery testing should replace velocity testing.
按照风险评估执行并作为污染控制策略(CCS)的一部分进行书面记录 。但是, 用单向气流支持的灌装区 (例如,最终灭菌产品的灌装或作为A级与限制进入屏障系统 (RABS)的背景时 )要求执行 。 对于具有非单向气流的等级,恢复测试的测量应取代速度测试。
问题点:B级和C级也需要单向流?
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