What is a clean room

Clean Room is a complex technical room where the counting concentration of pollutants suspended in air, microorganisms are maintained within certain limits.

Particles are generally understood to be a solid, liquid or multiphase object or microorganism with dimensions from 0.005 to 100 μm. When classifying clean rooms, particles with lower threshold sizes of 0.1 to 5.0 μm are taking into account.

Cleanroom is a room in which a countable concentration of aerosol particles is monitored. It is constructed and used to minimize the generation, and accumulation of particles inside the room, while allowing other parameters such as temperature, humidity and pressure to be monitored.

At the heart of architectural and building solutions for creating a clean room is the principle of building a “room in the room.” The working area of ​​a clean room is formed by a space limited by the use of encapsulated elements of enclosing structures.

An important characteristic of a clean room is its cleanliness class.

Cleanliness class is characterized by a classification number that determines the upper limit of the maximum allowable counting concentration of aerosol particles in 1 m3 of air.

By the way of constructing the architecture of the ventilation and air conditioning system, clean rooms can be conditionally divided into 2 large groups:

• with laminar air flow;
• with a non-directional (turbulent) air flow;

There are three states of a clean room:

• As built

The room is completely assembled. Engineering systems are connected. Equipment, materials and personnel are absent.

• At rest

The room is fully equipped with working equipment. Staff is absent.

• Operational

The room functions in an established manner. Personnel performs work functions.

NET PREMISES. CONSTRUCTION FEATURES

The main structural materials:

• Walls
• Ceiling
• Window
• Doors
• Floors
• Additional accessories and additional elements

Creation of a system of supply and exhaust ventilation:

Air preparation system:

• Air filtration
• Air conditioning
• Air drying and moistening
• Duct network
• Ceiling diffusers and air grilles

Installation of lighting and wiring:

• Lights
• Socket network
• Low-current networks

Installation of automation and control system of a maintained class of cleanliness:

• Climatic parameters control devices inside a clean room (temperature, humidity)
• System for maintaining excess pressure inside a clean room
• Devices for monitoring and control of maintained air purity