In the industrial and commercial hubs of Kuala Lumpur and Selangor, lead-acid battery banks (UPS, Telecom, or Substation backups) are essential for power continuity. However, during the charging process—particularly "boost" or "equalize" charging—these batteries undergo electrolysis, releasing Hydrogen (H2) gas.
Hydrogen is colorless, odorless, and extremely buoyant. Most critically, it is explosive at concentrations as low as 4% by volume (LFL). Because hydrogen rises rapidly, it collects in "pockets" at the ceiling, creating a severe fire and explosion risk if not managed by a dedicated extraction system.
EKG M&E Sdn Bhd designs and installs Fail-Safe Hydrogen Extraction systems that comply with IEEE 484 and NFPA 70 (NEC) standards.
As an HVAC and Clean Air Specialist, we treat hydrogen extraction differently from standard comfort cooling:
High-Point Suction: Since hydrogen is roughly 14 times lighter than air, standard floor-level or wall-mounted exhaust fans are ineffective. We install extraction points at the highest point of the ceiling or within specialized hoods directly above the battery racks.
Non-Sparking (ATEX) Fans: To prevent the extraction system itself from becoming an ignition source, we utilize ATEX-rated or AMCA Type A/B Spark-Resistant fans. These feature non-ferrous blades and explosion-proof motors.
Continuous vs. On-Demand Flow: We often design systems to provide a baseline continuous ventilation rate (typically 2 to 4 air changes per hour) that ramps up to high-speed extraction when gas is detected.
A reliable extraction system must "think" in real-time. We integrate multi-level safety controls:
Hydrogen ($H_2$) Detectors: We place sensors at the ceiling "collecting points."
Level 1 (1% concentration): Triggers the extraction fans to high speed and sends a "Pre-Alarm" to the Building Management System (BMS).
Level 2 (2% concentration): Activates a local audible/visual alarm and can be programmed to trip the battery charger to stop further gas production.
Airflow Proving Switches: We don't just "command" the fan to run; we measure the actual movement of air. If a fan belt snaps or a motor trips, the system immediately alerts the maintenance team of a "Loss of Ventilation" status.
| Feature | Standard Requirement | EKG M&E Implementation |
| Max Concentration | Must stay below 1% (25% of LFL). | High-CFM VFD-Controlled Fans. |
| Ignition Protection | No sparks near the ceiling. | Ex d (Flameproof) Rated Motors. |
| Redundancy | Prevent single-point failure. | Dual-Fan Duty/Standby Logic. |
| Backup Power | Must run during power failure. | Connected to Essential/UPS Circuit. |
VFD Modulation: We use Variable Frequency Drives (VFDs) to maintain a low "trickle" exhaust during normal operation, saving energy while ensuring no gas pockets form.
Fire Alarm Interlock: In the event of a fire (not caused by hydrogen), the extraction system can be programmed to shut down to prevent the "fanning" of flames, or remain active if gas buildup is the primary threat, depending on your Bomba-approved Fire Strategy.
Turnkey MEP Capability: We handle the specialized ducting (often PVC or coated steel to resist acid fumes), electrical wiring for hazardous zones, and the final sensor calibration.
Local Compliance: Based in Kuala Lumpur, we ensure your battery room meets Malaysian JKKP/DOSH safety standards for hazardous gas management.
Predictive Maintenance: We offer Vibration Analysis for extraction fans and regular gas sensor recalibration to ensure the system is always ready to respond.
Malaysia
