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When we build acleanroom，a wide range of parameters must be carefully considered to ensure compliance with industry standards and to meet operational requirements.
Cleanrooms must be designed rationally to effectively control contamination. A stable environment must also be maintained to successfully carry out sensitive processes.
In this guide, I outline the key steps and considerations for building a cleanroom, covering aspects such as standards, design, construction, and system integration.
HVAC and Supplementary Air
A robust HVAC system is crucial in maintaining temperature, humidity, and pressure differentials within the cleanroom.- Temperature Control: Systems should maintain a stable environment to prevent condensation and microbial growth.
- Air Quality: Install supplementary air systems to ensure adequate ventilation and air change rates according to the cleanroom classification.
- Temperature: 20-24℃, Humidity: 40-60%
- Pressure differential: 10-15 Pa
- iso 7 cleanroom: 60-90 ACH
Circulating Air System
Design an air circulation system that facilitates consistent airflow and contaminant removal, employing unidirectional or turbulent airflow patterns as required.- Airflow Patterns: Ensure the system supports the necessary air change rates to maintain a particulate-free environment, tailored to the cleanroom's ISO classification.
Cleanroom Construction Process
There are several key stages involved in constructing a cleanroom, ranging from initial planning to final validation:Phase 1: Defining the Scope Everything starts with the cleanroom’s core mission—classification and capacity limits. If the project owner doesn't lock down these specs early, you’re looking at a nightmare of mid-stream redesigns and compliance failures that eat your budget.Phase 2: Precision Engineering Our lead designer, Jason Peng, translates these needs into layout drawings and a granular BOM. This isn't just paperwork; missing a single parameter here usually leads to erratic ACH and pressure drops once the system is live.Phase 3: The Build & Hidden Works On-site, the real battle is behind the walls. Contractors must verify duct insulation and air-tight sealing before the pressure tests. A single gap in a concealed joint will trigger persistent particle leaks, making it impossible to stabilize zone differentials.Phase 4: HVAC & System Tuning Installation is more than placing equipment; it’s about cross-system linkage. Technicians focus heavily on debugging loops—if this isn't dialed in perfectly, your temperature and humidity will swing wildly during daily operations.Phase 5: Final Validation The finish line involves rigorous DQ/IQ/OQ/PQ testing by a third-party lab. This is the "make-or-break" for your official permit. Skimping on validation isn't an option unless you want to delay your entire production startup.Conclusion
Constructing a cleanroom requires a systematic approach, focusing on standards, design, materials, and systems integration. By following these guidelines and leveraging expertise from providers like Deiiang™, led by Deiiang Jason.peng, facilities can create high-performance cleanrooms that meet stringent industry requirements.Common Questions and Answers
Q: What are the primary standards for cleanroom construction?
A: ISO 14644 provides the international standards for air cleanliness and performance testing.
Q: How does HVAC contribute to cleanroom efficiency?
A: It maintains temperature, humidity, and pressure, essential for controlling the cleanroom environment.
Q: Why is modular design beneficial in cleanrooms?
A: Modular designs allow for future scalability and easy reconfiguration to adapt to changing needs.
Q: How does Deiiang™ ensure cleanroom compliance?
A: By integrating advanced materials and systems into the design, ensuring adherence to ISO standards.
Q: What role do HEPA filters play in cleanrooms?
A: They remove 99.97% of airborne particles, maintaining high air quality.
Q: What impacts cleanroom costs & typical budgets?
A: Costs vary by ISO grade, materials and HVAC. Deiiang™ offers tiered solutions, with high-grade filters and sealing as key cost drivers.
Q: How long is the project cycle?
A: Standard projects take 30-60 days; retrofits need 20-40 days, including DQ/IQ/OQ/PQ validation led by Jason.peng.
References
- International Organization for Standardization. ISO 14644-1: Cleanrooms and Associated Controlled Environments.
- The Institute of Environmental Sciences and Technology (IEST), Recommended Practices for cleanroom design and Construction.
- U.S. Pharmacopeial Convention (USP), Environmental Standards
