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| Class ISO 14644-1 (Federal Standard 209E) | Maximum Particle Concentration Per M3 .1µm|.2µm|.3µm|.5µm|1µm|5µm | Average Airflow Velocity m/s (ft/min) | Air Changes Per Hour | Ceiling Coverage | Application | Terra Cleanroom Design |
| ISO 8 (Class 100,000) | c|c|c|3,520,000|832,000|29,300 | 0.005 – 0.041(1 – 8) | 5 – 48 | 5 – 15% | Automotive Environmental Research Food Manufacturing | Hardwall Softwall |
| ISO 7 (Class 10,000) | c|c|c|352,000|83,200|2,930 | 0.051 – 0.076(10 -15) | 60 – 90 | 15 – 20% | Nutraceutical Development Drug Compounding Cell Culture | Hardwall Softwall BioSafe® Hybrid |
| ISO 6 (Class 1,000) | 1,000,000|237,000|102,000|35,200|8,320|293 | 0.127 – 0.203(25 – 40) | 150 – 240 | 25 – 40% | Medical Device Life Science Operating Rooms | Hardwall BioSafe® Hybrid |
| ISO 5 (Class 100) | 100,000,|23,700|10,000|3,520|832|d, e, f | 0.203 – 0.406(40 – 80) | 240 – 480 | 35 – 70% | Nanofabrication Pharmaceutical Filling Optics | Hardwall BioSafe® Hybrid BioSafe® Steel |
| ISO 4 (Class 10) | 10,000|2,370|1,020|352|83|d | 0.254 – 0.457 (50 – 90) | 300 – 540 | 50 – 90% | Aerospace | BioSafe® Hybrid BioSafe® Steel |
| ISO 3 (Class 1) | 1,000|237|102|35|d|e | 0.305 – 0.457 (60 – 90) | 360 – 540 | 60 – 100% | Semiconductor Microelectronics | BioSafe® Hybrid BioSafe® Steel |
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Terra’s Cleanroom Design for Fire-Rated Areas
Fire-rated and explosion-proof cleanrooms must adhere to the standards set forth by the National Fire Protection Agency (NFPA). The National Fire Protection Association (NFPA) is a non-profit organization that develops and publishes codes and standards related to fire safety, electrical safety, and other safety issues. The NFPA has developed a set of cleanroom standards that are designed to ensure that cleanrooms are safe from fire hazards and other safety risks. Some of the key NFPA cleanroom standards include:
- NFPA 45: Standard on Fire Protection for Laboratories Using Chemicals - Provides guidelines for the safe handling and storage of chemicals in laboratory environments, including cleanrooms.
- NFPA 70: National Electrical Code - Offers guidelines for the safe installation and maintenance of electrical equipment in cleanrooms.
- NFPA 70E: Standard for Electrical Safety in the Workplace - Offers guidelines for protecting workers from electrical hazards in cleanroom environments.
- NFPA 652: Standard on the Fundamentals of Combustible Dust - Provides guidelines for managing the risks associated with combustible dust in cleanroom environments.
- NFPA 80: Standard for Fire Doors and Other Opening Protectives - Provides guidelines for the installation and maintenance of fire doors in cleanrooms to prevent the spread of fire.
Fire-rated cleanrooms are equipped with features and built from materials that help prevent the spread of fire while protecting the occupants and valuable equipment. Here are some common features of fire-rated cleanrooms:
- Fire-Resistant Construction: Fire-rated cleanrooms are constructed from fire-resistant materials designed to resist the spread of fire and provide a barrier between the cleanroom and surrounding areas.
- Fire Suppression Systems: Fire-rated cleanrooms are equipped with automatic fire suppression systems, such as sprinklers or clean agent systems, designed to quickly detect and extinguish fires.
- Fire-Rated Doors: Fire-rated cleanrooms have specially designed, fire-rated doors, equipped with intumescent seals or gaskets that expand when exposed to heat, to provide a barrier against smoke and flames.
- Fire-Rated Glazing: All fire-rated cleanroom windows or observation panels must use fire-rated glazing materials to resist the passage of fire and smoke while maintaining visibility into and out of the cleanroom.
- Fire and Smoke Detection Systems: Fire and smoke detection systems quickly detect the presence of smoke and initiate appropriate alarm systems.
- Evacuation Systems: Fire-rated cleanrooms feature well-designed evacuation routes and clear signage to guide occupants to a safe area (in the event of a fire). Emergency lighting and exit signs are installed to provide visibility during the evacuation process.
Terra’s Design for Fire-Rated Spaces: Modular Steel Fire-Retardant and Explosion-Proof Cleanrooms
Terra’s all-steel modular cleanroom features ASTM-rated powder-coated steel or 304-grade stainless steel wall panels and ceiling grid. The heavy-duty, explosion-proof ceiling LED light fixtures are enclosed in an FM 4910-rated lens cover. Stainless steel, explosion-proof HEPA fan filter units include non-sparking components, all-potted conduit and grounded filter screens to meet NEC Class 1 Division 1 requirements. UL-listed fire-rated entry doors feature wired-glass windows, mortise locks and honeycomb insulation. Explosion-proof switches and powder distribution modules are isolated from the rest of the system to prevent flame spread. All electrical components are enclosed in potted conduit to prevent exposure to sparks.
Learn More: Fire-Retardant Cleanrooms
Learn More: Explosion-Proof Cleanrooms
Terra’s Manufacturing Capabilities
Terra builds and installs over 500 cleanrooms per year, on average. All cleanroom components are pre-engineered, quality control tested, and stocked for quick integration and assembly. In addition to product manufacturing, Terra offers a wide range of value-add services, including white glove delivery, cleanroom installation, structural seismic analysis, expedited production, qualification documentation and extended warranties. Order-specific certificates of compliance, listing each product’s adherence to ISO, UL, OSHA and seismic standards, are supplied with every qualifying sale. The leader in critical environment solutions, Terra also manufactures laminar flow hoods, desiccator cabinets, glove box isolators, pass through chambers, and a broad array of cleanroom-compliant furniture, storage and gowning equipment. To determine the appropriate ISO rating, room design and configuration for your project; please call 714-578-6100 to consult with a Terra cleanroom professional.