Self-cleaning and illumination test of purification workshop
Self-cleaning and illumination test of purification pharmaceutical cleanroom
The purpose of the clean room self-cleaning test is to determine the time it takes for a non-unidirectional flow clean room or clean area machine system to recover to a stable cleanliness level after a brief particle emission event in the clean space. The test steps are: determine the number and location of sampling points; ensure that the purification vehicle...
Text label: purification workshop test, purification workshop decoration company, purification workshop self-purification and illumination
Self-cleaning and illumination test of purification workshop
The purpose of the clean room self-cleaning test is to determine the time it takes for a non-unidirectional flow clean room or clean area machine system to recover to a stable cleanliness level after a brief particle emission event in the clean space. The test steps are: determine the number and location of sampling points; ensure that the HVAC system in the purification workshop is in operation; set the counter or photometer according to the manufacturer's instructions; the sampling probe should not be placed directly under the high-efficiency filter or room supply air, identify When out of the poor airflow area, turbulent area, etc. in the test area, the sampling probe should be slightly higher than the height of the working surface or the height where the product may be exposed; when the air handling system is working, particle dust is generated in the purification workshop or purification area, and the initial particles The concentration rises to 1000-10000 times the target cleanliness level; stop the aerosol generation, record the start time, and start measuring the aerosol concentration, record the aerosol concentration value every minute with a sampling period of 6-12s, until the particle count falls back To 10 times the target cleanliness level, record and give the corresponding graph of particle concentration and time at each sampling point; the self-cleaning time is expressed in minutes, the time required for the particle concentration to decrease by 2 orders of magnitude, that is, from 1000 times at each location The time for the target concentration to drop to 10 times the target concentration.
The purpose of the illuminance and uniformity test is to verify that the illuminance and uniformity of the installed lamps meet the specified requirements; the illuminance measurement should be carried out under actual working conditions, all lighting in the area, including general lighting, special lighting and supplementary lighting , should be in normal use; measure the height of the work surface and take it at the specified work point, which has both natural light and electric lighting; verify that the thermal conditions of the space are stable; should indicate and consider natural light sources Impact. Determine the average concentration of general lighting, determine the location of the measurement grid, which should include a representative area of u200bu200bthe work plane, obstacles above the work plane, avoid pillars, tall equipment, filing cabinets, etc., should be noted in the report. Using this method in the area can make the average illuminance within 10% of the value obtained by the grid method, which is to divide the area into 0.6m squares, and obtain in each square Take readings and calculate the average; when the measuring instrument takes readings, the photosensitive element is in a horizontal position and 750mm from the ground. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for purification workshops and purification projects.
The general purpose of sound measurement is to determine the actual sound level in the clean room. In order to correctly determine the sound pressure level, it must be carried out when other building systems and external sound sources are at the lowest level and have no effect on the measurement of the test equipment. ; Before and after the sound level measurement, on-site calibration should be carried out according to the manufacturer's recommendations; according to the occupancy status, when the appropriate system, equipment, personnel, etc. are in place, the sound measurement is carried out; Direct line-of-sight contact between the source and the sound level meter, unless otherwise specified, at a height of approximately 1200mm from the ground and at least 900mm from a wall, column or other large surface that can affect the measurement; sound level measurement Values u200bu200bare generally in dB, dB(A), noise standard or room standard.
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