[Control Characteristics of Purification Engineering in Four Major Areas] The four major areas of wide application of purification engineering mainly refer to: electronic factories, pharmaceutical factories, operating rooms and biosafety laboratories. The requirements of purification control systems in different fields are different. At the same time, control standards in these areas can be widely used in other industries, such as electronic factories. The control system of purification engineering can be used in PCB production workshop, electrical appliances, injection workshop, etc. The control characteristics of purification projects in the four major fields are different as follows:
The cleanliness of electronic factory directly affects the quality of electronic products. Using primary air supply and secondary air supply system, FFU fan filter unit is widely used to purify air layer by layer, reaching 8-level cleanliness in dressing room, 7-level corridor and 6-level in production workshop. Locally, it needs 5-level or 4-level. Static acceptance is required after the completion of the project.
The three objectives of purification control in pharmaceutical factories are cleanliness, six-level standards are widely used in air lock rooms to control cross-contamination in clean rooms; CFU refers to the number of live bacteria in clean rooms; the project needs to be certified by the national GMP; only when the three objectives are completed can it be a qualified purification project, and the project system needs to use on-duty fan parts. The 5 poles are monitored dynamically by the Drug Inspection Bureau and used after static acceptance.
Operating room control is more stringent, using MAU + AHU system, air supply ceiling 3m*3m, 1000 grade purification level, acceptance criteria for static acceptance, dynamic acceptance of temperature, humidity, CFU. Usually, the infection rate of patients during operation is 25%. According to statistics, the infection rate of operation is 10%-15%. Many hospitals use the infection rate of routine operation as a good index to evaluate the cleaning project of operating room.
Characteristic of purification engineering control in biosafety laboratory Our country has formulated relevant safety regulations. Biosafety isolation clothing and independent oxygen supply system are selected for engineering purification equipment. After tightness test treatment, closed isolator and negative pressure secondary barrier system are adopted for unified purification of waste liquid and exhaust gas to ensure personal safety. Good Biosafety Laboratory Purification Regulations. To learn more about the medical purification industry, please pay attention to the Wechat Public No. Aide-188 (Ed Purification and Oxygen Supply)