In the 2026 Malaysian regulatory landscape, HEPA Filter Leak Detection is a high-precision diagnostic requirement under ISO 14644-3 and the DOSH ICOP IAQ 2026. A leak is defined as any localized penetration of the filter media or its seals that exceeds the allowable limit (typically 0.01%). For semiconductor fabs in Penang or pharmaceutical labs in the Klang Valley, an undetected leak is not just a maintenance issue—it is a risk to product yield and biosafety.
At EKG M&E, we leverage 34 years of engineering depth to provide certified leak detection that identifies the exact coordinates of a breach before it triggers a system-wide failure.
We utilize two primary methods for detecting microscopic bypasses in your H13/H14 filtration arrays:
Aerosol Photometry (PAO Test): The industry standard for on-site validation. We inject a Polyalphaolefin (PAO) aerosol upstream and scan the downstream face. A "Leak" is a localized spike in concentration that indicates a hole in the glass-fiber media or a failure in the frame seal.
Discrete Particle Counting: Often used for ULPA (U15-U17) filters in ISO Class 1-3 cleanrooms. This method uses high-sensitivity laser counters to identify individual particles bypassing the media, providing a more granular look at the "Efficiency Envelope."
Ultrasonic Leak Detection: In specific pressurized housing applications, we use ultrasonic sensors to "hear" the high-frequency turbulence of air escaping through a compromised gasket or a pinhole in the welded ductwork.
Under DOSH 2026 audits, we frequently find that "Leaks" are not caused by the filter itself, but by its installation:
Gasket Compression Set: Traditional rubber gaskets can lose their "memory" over time, creating bypass channels. We verify the clamping torque to ensure even pressure.
Gel-Seal Air Pockets: In liquid-seal systems, bubbles or "dry spots" in the silicone gel can allow air to bypass the knife-edge. We perform a visual and radiometric audit of the seal interface.
Media Fatigue: Excessive vibration from the AHU can cause micro-tears in the delicate pleated paper. We use FFT Analysis to prevent this (see below).
Leak detection is intrinsically linked to your Variable Frequency Drive (VFD) and overall system health under the Energy Efficiency and Conservation Act (EECA):
Pressure-Drop Anomalies: A sudden drop in differential pressure ($\Delta P$) is often the first indicator of a major leak. We link these sensors to the VFD to alert the BMS immediately.
The Cube Law Advantage: A "leaky" system forces the fan to work harder to maintain room pressure, wasting significant energy. Following the Cube Law, by sealing leaks and allowing the VFD to run at a 20% lower speed, we can slash your ventilation power draw by nearly 50%.
To ensure that "repaired" or "newly installed" filters do not develop leaks immediately, we employ Fast Fourier Transform (FFT) Analysis:
Resonance Fingerprinting: We monitor the vibration signature of the filter housing. If the fan motor creates a harmonic resonance that causes the filter media to "flutter," it will eventually lead to a media breach.
VFD Frequency Skipping: We program the VFD to "skip" the specific RPM ranges that trigger these mechanical resonances, preserving the "Leak-Free" status of your H14 filters for their entire 18-month lifecycle.
34 Years of Engineering Depth: A Malaysian leader in high-performance MEP for the most sensitive industrial and medical hubs.
Audit-Ready Documentation: Every detection cycle concludes with a Certified Leak Map and Integrity Report, essential for DOSH 2026 and NPRA compliance.
Turnkey Remediation: If a leak is found, we don't just report it—we offer Certified Patching (within ISO limits) or immediate Filter Replacement to restore your cleanroom's status.
Malaysia
