（亚））高效过滤器的更换周期

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14. At what frequency do manufacturers have to clean or change filters such as G4, F9 and H13 filters?
Manufacturers should establish the intervals for cleaning, replacement and testing of filters based on risk assessment. Risk assessment should take various factors into consideration such as suppliers’ recommendations, process steps, product range and properties, hours of use, history, maintenance schedule, pressure differentials over filters, outcomes on tests such as installed filter leakage testing and others.


23. What is the maximum allowable time before a H13 filter is replaced?
There is no prescribed timeframe for the replacement of HEPA filters. Manufacturers should define the intervals at which H-type filters are replaced. This may be based on supplier recommendations and other risks identified. Contributing factors may include the overall design of the AHU (with pre-filters), dust loads (as a result of the environment, product type, processing step, type of equipment used such as open or closed systems), pressure differential over the filter, results of installed filter leakage test, preventive maintenance and quality attribute checks. Filter media may also deteriorate over time. The interval defined by a manufacturer should be appropriate and there should be no risk of filter failure (where the filter failure can have a significant negative effect on for example, but not limited to areas, conditions, operations, materials or products) prior to replacement of the filter.


实际操作过程中，请问大家是怎样风险评估相应的高效过滤器的更换周期的呢？？？？

北重楼

根据厂家建议以及公司历史使用情况来评估的

masiying

自己定期检漏，SOP规定

每驿必通

作为英语学习不错