In the highly regulated industrial landscape of Kuala Lumpur and Selangor, a Specialized Safety Exhaust System is more than just a ventilation duct—it is an active life-safety barrier. These systems are specifically engineered to manage concentrated hazardous pollutants, such as radioactive isotopes, highly corrosive acid vapors, or explosive gas mixtures, which standard industrial ventilation cannot safely handle.
EKG M&E Sdn Bhd provides end-to-end EPCC (Engineering, Procurement, Construction, and Commissioning) for safety exhaust systems, ensuring compliance with JKKP (DOSH) USECHH Regulations, NFPA 45, and ANSI Z9.5.
As an HVAC and Clean Air Specialist, we select containment technology based on the specific toxicity and physical properties of the contaminant:
Chemical Fume Hoods: For volatile solvents and acids. We focus on Face Velocity (typically 80–120 FPM) to ensure the "capture" of fumes even when the operator is moving.
Biosafety Cabinets (BSC): For biological hazards. These use HEPA-filtered laminar airflow to protect both the worker and the sample.
Radioisotope Hoods: Constructed with stainless steel or specialized lead-shielded liners, designed for easy decontamination with rounded (coved) internal corners.
Snorkel Arms (Point Extraction): For localized tasks like welding or small-scale chemical dispensing where a full enclosure is impractical.
Standard galvanized steel will fail rapidly in a specialized safety exhaust environment. We specify materials based on the chemical resistance required:
| Material | Application | Benefit |
| 316L Stainless Steel | Corrosive & High-Toxicity | Fully welded to prevent leaks; highly resistant to acid pitting. |
| Anti-Static PPS / FRP | Explosive & Corrosive | Prevents static buildup while handling aggressive chemical vapors. |
| Lead-Lined Ducting | Radiochemistry | Provides radiation shielding for the transport of isotopes. |
| PVDF / Teflon Coated | Extreme Solvents | Prevents chemical degradation in semiconductor or high-end lab settings. |
A specialized system is defined by its ability to remain safe during a failure. We integrate the following logic:
Negative Pressure Path: We mount exhaust blowers as close to the Exhaust Stack (roof) as possible. This ensures the entire duct run inside the building is under negative pressure, so any leak pulls air into the duct rather than pushing contaminants out into the facility.
Emergency Power Interlock: Critical safety fans are connected to the building's emergency generator or a dedicated UPS, ensuring a "Timed Purge" even during a total power failure.
VFD Modulation (VAV): We utilize Variable Frequency Drives linked to sash-position sensors. This reduces energy costs when the hood is closed while maintaining a safe, constant face velocity when in use.
The final stage is ensuring the hazardous air is dispersed safely without "re-entrainment" (being sucked back into the building's fresh air intakes):
High-Velocity Upblast Stacks: We design stacks to discharge air at a minimum of 3,000 FPM to punch through the "boundary layer" of the roof.
7-10 Foot Rule: In accordance with NFPA 45, stacks extend at least 7 to 10 feet above the roofline to ensure safe atmospheric dilution.
Scrubbers & Filtration: For specific environmental permits (DOE), we integrate wet scrubbers or carbon filtration banks to neutralize pollutants before they exit the stack.
JKKP (DOSH) Competency: We are specialized in LEV (Local Exhaust Ventilation) testing and certification, a legal requirement in Malaysia for any system handling hazardous chemicals.
Turnkey MEP Delivery: As a one-stop provider, we manage everything from the Vibration Analysis of the exhaust fans to the precision wiring of the safety alarms.
34-Year Legacy: Based in Kuala Lumpur, we bring decades of experience in designing safety-critical environments for hospitals, laboratories, and chemical plants.
Malaysia
