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Requirements for cleanliness of dust-free workshops in purification projects

information | Release time:2021-06-18

We all know that the necessity of the clean room and the cleanliness requirements of the clean room in the purification workshop depend on the nature of the clean room process. In this regard, it is very critical that we consider the level of protection required by products, processes and personnel, as well as the entire requirements for cleanliness of all other components. From a realistic point of view, to ensure adequate pollution control for a specific environment, it is necessary to control the number of indoor air changes, the indoor temperature and humidity, the pressure difference with adjacent rooms, the indoor particle concentration, and the building materials and equipment used in the room, the number of microorganisms, the pollution level of clothing used and the number of ventilation filters. Other factors that need to be considered comprehensively are: personnel hygiene, equipment options, flow of people and logistics channels.

The ventilation of the clean room of the air handling system is generally to eliminate various pollutants in the room. This is not only to create a safe environment for products and processes, but also to create a satisfying working environment for the staff. There are two different methods for ventilation in the clean room: traditional airflow system and unidirectional airflow system.

(In the traditional airflow system, the air supply is completed by one or more high-efficiency filters (or other types of filters) at different locations in the room. In the unidirectional flow system (also known as the laminar flow system LAF or UDF), the air supply is completed by a high-efficiency filter (or other types of filters) that covers the entire ceiling (vertical flow clean room) or the entire wall (horizontal flow clean room).