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Replacement intervals for high efficiency filters in pharmaceutical plants
Replacement intervals for high efficiency filters in pharmaceutical plantsThe clean room used in the hospital is to meet the strict requirements of the surgical process on air temperature, humidity, wind speed, freshness and cleanliness, noise, etc., to create a comfortable environment conducive to work Therefore, the building of the surgical department has a clean area, quasi-clean area, general area strictly divided, with a clear flow and strict planar functional area, that in the clean system, how effective is the use of high-efficiency filters in pharmaceutical plants? How often is it replaced?According to the number of air dust particles with particle size greater than or equal to 0.5μm allowed to exist in the air after cleaning, the purified laminar flow operating room can be divided into 100000 level, 10000 level, 1000 level, and 100 level four levels. Where the higher the number, the lower the purification level. Primary filter resistance has exceeded the rated primary resistance of 60pa, or equal to 2 x design or operating primary resistance for 3-6 months, exceeding the standard replacement at any time; Medium efficiency filter resistance has exceeded the rated initial resistance 80pa, or equal to 2 x design or operating initial resistance 6-12 months, more than the standard at any time to replace; Sub-efficient filter resistance has exceeded the rated initial resistance of 100pa, or equal to 2 × design or operation of the initial resistance (3 times in the case of low resistance sub-efficient) more than 1 year, more than the standard at any time to replace; High-efficiency filter resistance in pharmaceutical plants has exceeded the rated initial resistance of 160pa, or equal to 2 x design or operating initial resistance for more than 3 years, and is replaced at any time when the standard is exceeded. In hospitals, many surgeries are required to be aseptic, and to truly achieve aseptic operation, it is inseparable from the operating room high-efficiency filter, but the pharmaceutical plant high-efficiency filter requirements are 2 to 3 years to be replaced once. |
