In the high-stakes industrial zones of Kuala Lumpur and Selangor, hazardous gas ventilation is not merely a comfort requirement—it is a life-safety critical system. Whether you are managing toxic laboratory fumes, flammable hydrogen in battery rooms, or volatile organic compounds (VOCs) in chemical plants, the goal is twofold: dilution to prevent explosive atmospheres and extraction to protect personnel from toxic exposure.
EKG M&E Sdn Bhd provides specialized engineering and JKKP (DOSH) LEV certification for gas ventilation, strictly adhering to USECHH Regulations 2000 and international standards like NFPA 45.
As an HVAC and Clean Air Specialist, we implement two primary methodologies based on your site’s Chemical Health Risk Assessment (CHRA):
Local Exhaust Ventilation (LEV): Captures hazardous gases at the point of release (e.g., fume hoods, "snorkels"). This is the most efficient method for highly toxic or expensive gases, as it moves the least amount of air.
Dilution (General) Ventilation: Uses large volumes of fresh air to "thin out" low-toxicity gas concentrations across the entire room. We utilize Variable Frequency Drives (VFDs) to modulate these fans, ensuring high-speed flushing only when sensors detect a leak.
In gas-rich environments, every mechanical part is a potential ignition source. We eliminate this risk using:
Flameproof (Ex d) Motors: Heavy-duty enclosures designed to contain an internal explosion so it cannot ignite the surrounding atmosphere.
Spark-Resistant Impellers: Fan blades made of non-ferrous materials (Aluminum/FRP) or anti-static carbon fiber to prevent mechanical sparking if the blade strikes the housing.
Corrosion-Resistant Ducting: For acidic or corrosive gases, we utilize welded stainless steel or anti-static Polypropylene (PPS) to ensure the system doesn't leak due to chemical degradation.
| Parameter | Standard Requirement | EKG M&E Implementation |
| Zone Rating | Zone 1 (High) / Zone 2 (Med) | ATEX / IECEx Certified Equipment. |
| Air Changes | 6 - 12 ACH (Occupied Lab) | PLC-driven airflow management. |
| Pressure | Negative relative to corridors | Differential pressure sensor monitoring. |
| Fail-Safe | Continuous monitoring | Loss-of-flow alarms & secondary backup. |
We integrate the ventilation system with Gas Detection Systems to create an "Active Safety" loop:
Pre-Alarm (e.g., 10% LFL): The VFD ramps the exhaust fan to 100% and opens the fresh air dampers to flood the room with oxygen.
High Alarm (e.g., 25% LFL): The system triggers an emergency shutdown of the gas supply or the production line while maintaining maximum exhaust.
Purge Cycle: For pressurized rooms (Ex p), we time the purge to ensure 5–10 air volume exchanges before electrical power is even allowed to the equipment.
JKKP (DOSH) Registered: We provide the mandatory annual testing and certification required by Malaysian law for hazardous area LEV systems.
Predictive Maintenance: We perform Vibration Analysis on critical exhaust fans to detect bearing wear early, preventing the frictional heat that could lead to a fire.
Strategic Support: Based in Kuala Lumpur, we manage the entire lifecycle—from initial Hazardous Area Classification to final commissioning and 24/7 emergency response.
Malaysia
