A CNC room classification refers to a Controlled Non-Classified area, which is a space with specific environmental controls.
Understanding CNC Areas
- Definition: A Controlled Non-Classified (CNC) area is a designated space where the HVAC (Heating, Ventilation, and Air Conditioning) systems are designed to reduce airborne contaminants below the levels found in the surrounding environment.
- Environmental Control:
- These areas maintain tighter control over temperature and relative humidity compared to the ambient environment.
- This ensures a stable and cleaner environment.
- Purpose:
- CNC areas are used where some level of environmental control is necessary, but the strict requirements of a classified cleanroom aren't needed.
- They are often used as buffer zones or preparatory areas for classified cleanrooms.
Key Differences
| Feature | CNC Area | Ambient Environment |
|---|---|---|
| Airborne Contaminants | Reduced below ambient level | Normal environmental levels |
| Temperature Control | Tighter than ambient environment | Standard/Fluctuating |
| Humidity Control | Tighter than ambient environment | Standard/Fluctuating |
Practical Insights
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Examples of Use:
- Manufacturing areas requiring less stringent controls than cleanrooms.
- Pharmaceutical packaging areas prior to final sealing.
- Some electronic assembly areas.
-
Benefits:
- Reduced risk of contamination compared to ambient conditions.
- Improved product quality and consistency.
- More cost-effective than implementing full cleanroom technology.
In summary, a CNC room classification denotes an area with controlled environmental conditions, making it cleaner and more stable than a typical ambient environment but less stringent than a classified cleanroom.
