Ceiling Suspended Laminar Air Flow (CLAF)
Custom-designed ceiling-suspended laminar air flow modules that bathe entire automated filling, capping, or compounding lines in unidirectional sterile air. Features anti-static tear-drop PVC curtains, decentralized Fan Filter Units (FFUs), and automated velocity controls.
Engineering Overview & Fluid Dynamics
Active contamination barrier and laminar downflow principles
The Himalayan Steel Ceiling Suspended Laminar Air Flow (CLAF) system is engineered to provide overhead Grade A / ISO Class 5 sterile protection over pharmaceutical automated filling machines, stopper loading bowls, and formulation reactors without requiring floor-mounted legs that obstruct cleanroom traffic. Anchored directly to ceiling structural slabs, it discharges vertical laminar air at 0.45 m/s through ceiling HEPA filters, enclosed by anti-static flexible PVC clear strip curtains or rigid polycarbonate panels to prevent side-draft cross-contamination.
Technical Engineering Specifications
Standard dimensional tolerances, electrical parameters, and air quality ratings
Standard Dimensional Matrix
Fabrication schedule comparison in Imperial and Metric standards
| Size (Feet) | Metric (MM) | Internal Chamber (W x D x H) | External Footprint (W x D x H) |
|---|---|---|---|
| 4 x 4 ft (Modular Square) | 1220 x 1220 x 550 mm | 1220 x 1220 x 1800 mm (under hood) | 1300 x 1300 x 600 mm |
| 6 x 4 ft (Filling Machine Hood) | 1830 x 1220 x 550 mm | 1830 x 1220 x 1800 mm | 1910 x 1300 x 600 mm |
| 8 x 4 ft (Conveyor Run) | 2440 x 1220 x 550 mm | 2440 x 1220 x 1800 mm | 2520 x 1300 x 600 mm |
| Custom Modular Array | Engineered to client line length | Tailored to machine geometry | Modular CAD layout |
Cleanroom Construction & Architectural Design
cGMP sanitary fabrication details from our Baddi engineering works
Constructed from 1.5 mm thick AISI 304 stainless steel with internal tubular stiffeners to ensure zero deflection across large ceiling spans.
Direct-drive electronically commutated (EC) motorized fans with integrated speed controllers delivering constant airflow while cutting power consumption by 40%.
Acoustically optimized perforated stainless steel diffuser face creates even air velocity distribution across the entire working envelope.
Extruded stainless steel perimeter curtain track allows fast sliding or detachment of PVC clear strips for cleaning.
Built-in upstream PAO introduction manifold enables routine filter integrity testing from floor level without ladder climbing.
IP65 stainless steel wall-mounted operator push-button console controls lighting, fan speeds, and displays differential pressure.
Standard Operating Protocol (cGMP SOP)
Standard operating guidelines and contamination control sequence
Step-by-Step Material Transfer Sequence
Sanitization & Wipe-Down Protocol
- Wipe PVC strip curtains with 70% sterile IPA cleanroom wipes at beginning of each shift.
- Sanitize perforated stainless diffuser faces weekly.
- Inspect FFU pre-filters quarterly; replace or wash as per validation schedule.
Fail-Safe Interlock Protection
- Differential pressure alarm alerts operator if FFU filters become loaded.
- Safety cable arrestors prevent hood displacement in seismic or mechanical failure events.
Optional Engineering Customizations
Site-specific hardware adaptations
- Motorized electric winch hoist for adjustable ceiling height positioning
- Rigid sliding polycarbonate side access windows with glove ports
- Air velocity sensor with automatic FFU speed auto-balancing
- Integration with central Building Management System (BMS) via Modbus RTU
- Differential pressure transmitter with cleanroom wall LED display
Quality Validation Package (DQ/IQ/OQ)
Audit-ready documentation for US FDA and EU-GMP inspections
- Design Qualification (DQ) Documentation & Suspension CAD Layout
- Installation Qualification (IQ) Protocol Checklists
- Operational Qualification (OQ) Air Velocity Distribution Mapping
- DOP/PAO HEPA Filter Integrity Scan Test Certificate
- Smoke Pattern Visualization (Airflow Smoke Studies) Report
- Particle Count Certification (ISO Class 5 / Grade A)
Cleanroom Design Highlights
- Suspended ceiling mount frees 100% of floor space around sterile machinery lines
- Decentralized EC motor blowers provide high energy efficiency and low heat emission
- Anti-static PVC curtain enclosures channel laminar downflow straight down to machine deck
- Modular ganging design allows joining multiple modules to cover long conveyor runs
Target Pharmaceutical Applications
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