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发表于 2023-12-8 22:17:23
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PDA TR34
1.Residual concentrations of gas/vapor must be aerated or out-gassed to a safe level. The safe level must be defined within the context of each isolator project, but in almost every case will be in the low part-per-million range. It is known, for example, that gas/vapor residuals can affect growth supporting characteristics of media used for testing or environmental monitoring. Decontaminant residual levels on production materials must also be considered.
残余气体/蒸汽的浓度必须经过充气或者脱气的方式将其降低到安全等级。这里对提出的安全等级必须是以每个隔离器项目的背景而定义的,但是基本上所有实例中安全等级都要控制在百万分之一的范围以内。总所周知,举个例子,残存的气体/蒸汽会对用于测试或者环境监测的媒体的生长特性造成影响。在原料生产中必须要考虑到污染物的残留等级。
A human safety exposure limit of 1 ppm or less is typical for the gas/vapors used in isolator decontamination over an eight-hour time weighted average. However, this does not mean that the URS for aeration of the gas for process use needs to be this low. It may very well be that the level of residual gas/vapor found on product contact materials after treatment must be 1 ppm or even lower, however this may equate to a much higher level of gas in the aeration section of the isolator or on the surfaces of the over-wrap and packaging materials. The specific URS for aeration and
out-gassing must be determined for each process.
在人体暴露的平均时间为8小时的情况下,隔离器净化过程中气体/蒸汽残存量应限制在1ppm或者更低。但是这并不意味着对工序中所使用的气体曝气的用户需求规范也要与其一致。如果能要求在经过处理之后的产品接触材料上发现的气体/蒸汽残存等级必须为1ppm甚至更低则最好,但是这就等于要求在对隔离器或者外包装和包装材料的表面进行曝气的环节中用到的气体的等级有更高的要求。在每个工艺中用于曝气和脱气的特殊URS都要做限定。 |
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