Control features of four major purification projects

2019-07-12 09:11:00   Editor: Yan Hong shares    0

The four major fields of purification engineering application mainly refer to: electronic factories, pharmaceutical factories, operating rooms, biosafety laboratories, and different requirements for purification control systems in different fields. At the same time, these areas of control standards can be widely used in other industries. For example, the control system of the electronic factory purification project can be used in PCB production workshops, electrical appliances, injection molding workshops, and the like. The control characteristics of the four major areas of purification engineering are as follows:


The cleanliness of the electronics factory directly affects the quality of electronic products. It adopts a primary air supply and secondary air supply system, and uses a large number of FFU fan filter units to purify the air in layers, achieving level 8 purification in the locker room, level 7 in the corridor, and level 6 in the production workshop. Partially required between level 5 or level 4, static acceptance is required after the project is completed.


The three objectives of the purification control of the pharmaceutical factory are cleanliness. The air lock chamber widely uses the six-level standard to control the clean room without cross-contamination; the CFU refers to the number of live bacteria in the clean room; the project needs to obtain the national GMP certification; the three are completed. The target can be a qualified purification project. The engineering system needs to use 5 parts of the duty fan, which is dynamically monitored by the drug inspection bureau and used after static acceptance.


The operating room control is more strict, using MAU+AHU system, air supply ceiling 3m*3m, thousands of purification levels, acceptance criteria for static acceptance, dynamic acceptance of temperature, humidity, CFU. Under normal circumstances, the patient's infection rate is 25%. According to statistics, the current surgical infection rate is 10%-15%. Many hospitals use the daily surgical infection rate as an excellent indicator for the operation room purification project.


Biosafety laboratory purification engineering control characteristics China has formulated relevant safety regulations. The engineering purification equipment uses bio-safety isolation suits and independent oxygen supply systems. The waste liquid and waste gas are uniformly purified and passed through the rigorous test after treatment. The closed isolator is used. The level barrier system guarantees personal safety and formulates a complete biosafety laboratory purification management order.