In the industrial landscape of Kuala Lumpur and Selangor, hazardous area ventilation is a critical safety infrastructure designed to prevent the accumulation of explosive gases, vapors, or combustible dust. Unlike standard HVAC, these systems are engineered to eliminate ignition risks while ensuring that contaminants are diluted or extracted before they reach the Lower Flammability Limit (LFL) or toxic thresholds.
EKG M&E Sdn Bhd specializes in the design, installation, and JKKP (DOSH) LEV certification of ventilation systems for high-risk zones, complying with MS IEC 60079, NFPA 91, and ASHRAE standards.
As an HVAC and Clean Air Specialist, we categorize ventilation requirements based on the Hazardous Area Classification (Zones) of your facility:
Zone 0 / 20 (Continuous Hazard): Ventilation is used to maintain a safe atmosphere within enclosed vessels. We utilize Intrinsically Safe (Ex ia) equipment and high-integrity ducting to manage constant flammable concentrations.
Zone 1 / 21 (Occasional Hazard): Ventilation must be "Primary Protection." We design systems to provide high air-exchange rates (typically 6 to 12 ACH) to ensure that any accidental leak is rapidly diluted.
Zone 2 / 22 (Unlikely Hazard): Focus is on "Dilution Ventilation." We use Non-Sparking (Ex nA) fans to ensure that even during a rare equipment failure, the ventilation system itself does not become an ignition source.
We implement two primary methods to manage hazardous atmospheres:
This method introduces a large volume of fresh air to "thin out" contaminants across the entire room.
Application: Large warehouses or chemical storage areas where leaks are small and scattered.
EKG Touch: We integrate Variable Frequency Drives (VFDs) to modulate airflow based on real-time gas sensor data, significantly reducing energy costs during "clean" periods.
This captures contaminants at the source (e.g., a mixing tank or a spray nozzle) before they enter the general workspace.
Application: Laboratory fume hoods, paint booths, and chemical decanting stations.
Compliance: In Malaysia, these systems require mandatory annual testing and certification by a JKKP-registered Competent Person under the USECHH Regulations.
Every component in a hazardous area ventilation system must be "Spark-Resistant" and "Flameproof":
| Feature | Standard Requirement | EKG M&E Implementation |
| Fan Type | AMCA Type A or B (Non-Sparking). | Aluminum or Anti-Static Carbon Fiber blades. |
| Motor | Ex d (Flameproof) or Ex e (Increased Safety). | ATEX / IECEx / SIRIM Certified Motors. |
| Ducting | Conductive/Grounded. | Stainless Steel or Anti-Static PPS/FRP. |
| Control | Interlocked with gas sensors. | PLC-driven logic with VFD speed ramping. |
To prevent the high operational costs of constant 24/7 high-speed ventilation, we synchronize the system with Gas Detectors:
Low Speed: Runs during normal operations to maintain air freshness.
High Speed: Triggered automatically when gas sensors detect 10% LFL.
Emergency Trip: If the exhaust fan fails or gas reaches 25% LFL, the system can automatically shut down the production process to stop the gas source.
Turnkey JKKP (DOSH) Compliance: We manage the entire process from Hazardous Area Classification to the final LEV airflow certification.
Vibration & Health Monitoring: We perform Vibration Analysis on all high-speed exhaust fans to identify bearing wear early, preventing frictional heat—a major ignition risk in hazardous zones.
Strategic Support: Based in Kuala Lumpur, we provide 24/7 maintenance for critical ventilation systems in the oil & gas, pharmaceutical, and chemical manufacturing sectors.
Malaysia
