Forklift Exhaust and Carbon Monoxide Monitoring in Factory Warehouses Malaysia
Meta Description: Monitor carbon monoxide, particulate matter and ventilation where diesel, LPG or petrol forklifts operate inside Malaysian factories and warehouses.
Forklift Exhaust and Carbon Monoxide Monitoring in Factory Warehouses Malaysia
Fuel-powered forklifts operating inside factories and warehouses may release carbon monoxide, particulate matter and other combustion pollutants.
Concentrations can increase when several forklifts operate simultaneously, loading doors are closed or ventilation is inadequate. Employees working at packing stations, loading bays and storage aisles may be exposed even when they are not driving the forklift.
A suitable monitoring plan helps factories identify when and where exhaust pollutants accumulate.
Which Forklifts Produce Exhaust?
Forklift types include:
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Diesel forklifts
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LPG forklifts
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Petrol forklifts
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Electric forklifts
Diesel, LPG and petrol units use combustion engines and produce exhaust.
Electric forklifts do not produce tailpipe exhaust during operation, but their battery-charging areas may present separate concerns such as hydrogen generation from lead-acid batteries or lithium-ion battery hazards.
What Pollutants May Be Present?
Depending on the engine and fuel, forklift exhaust may contain:
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Carbon monoxide
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Nitrogen oxides
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Particulate matter
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Carbon dioxide
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Hydrocarbons
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Other combustion products
A standard four-gas detector does not measure every possible exhaust pollutant.
For example, a detector with CO, H₂S, O₂ and LEL sensors does not automatically measure nitrogen dioxide.
Why Carbon Monoxide Is a Priority
Carbon monoxide is colourless and cannot be reliably detected through smell.
CO levels may increase because of:
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Incomplete combustion
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Poor engine maintenance
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Incorrect fuel mixture
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Cold starting
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Long idling
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Blocked exhaust
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Several forklifts operating together
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Poor warehouse ventilation
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Operating inside trailers or enclosed bays
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Exhaust entering offices or packing rooms
Employees should not depend on visible smoke or smell to determine whether CO is present.
Possible Warning Signs
Potential warning signs include:
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Headache
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Dizziness
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Nausea
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Weakness
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Confusion
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Unusual tiredness
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Complaints that improve outside the warehouse
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Detector alarms
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Higher readings during peak forklift activity
These symptoms are not specific to CO. If several employees become unwell or an alarm activates, the factory should follow its emergency procedure.
Portable CO Monitoring
A portable CO detector can be used to:
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Check loading bays
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Measure around forklift routes
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Inspect packing stations
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Compare busy and quiet periods
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Investigate employee complaints
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Check conditions before and after ventilation improvements
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Identify whether exhaust enters nearby rooms
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Monitor maintenance personnel
Measurements should be taken during normal forklift activity rather than only when the warehouse is empty.
Using the Wintact WT8812
The Wintact WT8812 includes sensors for:
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Carbon monoxide
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Oxygen
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Combustible gas
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Hydrogen sulphide
It may support portable CO monitoring where these four parameters match the identified hazards.
However, the WT8812 does not automatically measure:
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Nitrogen dioxide
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Diesel particulate matter
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Every hydrocarbon
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All combustion products
Additional instruments may be necessary depending on the forklift type and assessment objective.
CO Monitor vs CO₂ Monitor
Carbon monoxide and carbon dioxide are different gases.
CO Monitor
Used to detect a toxic product of incomplete combustion.
CO₂ Monitor
Commonly used as a ventilation indicator in normally occupied indoor spaces.
A Temtop CO₂ monitor cannot replace a carbon-monoxide detector for forklift-exhaust safety.
A warehouse may show a moderate CO₂ reading while still experiencing a local CO problem near a poorly maintained engine.
Monitoring Particulate Matter
Diesel forklift operation may contribute particulate matter to the warehouse environment.
A portable Temtop PM2.5 and PM10 monitor can compare:
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Active forklift routes vs quieter aisles
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Indoor vs outdoor conditions
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Loading periods vs non-loading periods
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Diesel-forklift operation vs reduced activity
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Conditions before and after ventilation changes
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Warehouse vs adjacent office areas
Optical PM readings indicate particulate trends but do not specifically identify diesel exhaust or chemical composition.
Professional exposure monitoring may be required when diesel particulate exposure must be formally assessed.
Where Should Readings Be Taken?
Useful monitoring locations include:
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Forklift travel routes
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Loading bays
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Packing stations
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Battery or fuel areas
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Warehouse offices
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Security rooms
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Enclosed aisles
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Trailer interiors before entry
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Areas where forklifts idle
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Fresh-air intakes
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Adjacent production zones
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Worker breathing zones
One reading near the warehouse entrance may not represent conditions deep inside storage aisles.
Why Monitoring Time Matters
Forklift-related pollution may be highest during:
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Morning startup
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Shift changes
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Peak loading periods
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Multiple deliveries
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Rainy periods when doors are closed
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Heavy engine operation
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Extended idling
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Operation inside trailers
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Ventilation-system downtime
Continuous or repeated measurements provide more useful information than a single spot check.
Checking Warehouse Ventilation
Ventilation affects how quickly exhaust pollutants are diluted and removed.
Inspect:
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Exhaust fans
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Supply-air openings
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Loading doors
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Roof ventilators
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Air-conditioning intakes
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Blocked grilles
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Fan operation
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Filters
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Airflow behind storage racks
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Dead-air zones
The Benetech GM8903 hot-wire anemometer can measure air velocity at ducts and ventilation outlets.
Airflow measurements should be combined with pollutant readings because a running fan does not guarantee effective removal in every warehouse zone.
Using Fixed Monitoring
Fixed CO monitoring may be suitable when:
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Fuel-powered forklifts operate daily
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The warehouse is enclosed
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Loading doors remain closed
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Employees work continuously near forklift routes
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The same problem area is repeatedly identified
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An audible or visual alarm is required
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Continuous data is needed
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Ventilation control is planned
The fixed detector should be positioned according to expected pollutant movement, worker location and ventilation design.
Basic Forklift-Exhaust Investigation
A practical investigation may include:
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List the forklift types and fuels.
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Record the number operating.
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Inspect engine-maintenance records.
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Measure background CO before activity.
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Monitor during startup.
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Check peak loading periods.
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Measure near worker stations.
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Check adjacent offices.
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Record ventilation conditions.
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Measure particulate trends where relevant.
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Repeat tests after engine or ventilation maintenance.
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Consider fixed monitoring at confirmed problem zones.
The measurement record should include forklift activity and operating conditions.
Why Forklift Maintenance Matters
Poor engine condition may increase pollutant emissions.
Maintenance items may include:
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Air filter
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Fuel system
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Ignition system
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Exhaust system
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Engine tuning
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Fuel mixture
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Injector condition
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Catalytic device
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Oil condition
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Idle speed
CO readings before and after maintenance can help show whether emissions have improved under comparable operating conditions.
Administrative and Engineering Controls
Possible improvements include:
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Switching to electric forklifts where suitable
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Improving general ventilation
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Adding local exhaust in enclosed bays
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Restricting unnecessary idling
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Maintaining engines
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Keeping loading doors open when appropriate
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Separating pedestrian workstations from traffic routes
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Monitoring peak operating periods
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Preventing forklifts from operating inside unsuitable enclosed spaces
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Installing permanent CO alarms
Monitoring verifies whether these measures improve the actual workplace condition.
Common Monitoring Mistakes
Checking Only When the Warehouse Is Empty
The problem may appear only during forklift operation.
Depending on Exhaust Smell
CO has no reliable warning odour.
Using a CO₂ Meter for CO
The sensors measure different gases.
Assuming LPG Produces No CO
Any combustion engine may produce CO when combustion is incomplete.
Measuring Only Beside the Forklift
Pollutants may accumulate at worker stations or inside enclosed aisles.
Ignoring Nitrogen Oxides and Particles
A CO reading alone may not describe the complete exhaust condition.
Using One Short Reading for the Whole Shift
Pollution may change with traffic and ventilation.
Questions to Ask Before Buying Monitoring Equipment
Before selecting an instrument, determine:
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Which forklift fuel is used?
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Is CO the main parameter?
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Are nitrogen dioxide or particles also a concern?
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Is portable or fixed monitoring required?
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How many forklifts operate simultaneously?
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Is the warehouse enclosed?
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Do workers remain near forklift routes?
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Is data logging required?
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Must the monitor activate ventilation or an alarm?
These questions help determine whether a portable CO detector, multi-gas monitor, PM monitor or fixed system is required.
Forklift Exhaust Monitoring Equipment Supplier Malaysia
MTM Precision supplies carbon-monoxide detectors, four-gas monitors, particulate meters and airflow instruments for factories, warehouses and loading facilities in Malaysia.
Contact MTM Precision with the forklift type, fuel, warehouse layout and required monitoring parameters to discuss suitable equipment.
Contact MTM Precision
MTM Precision Sdn. Bhd.
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia
🌐 Website: www.mtmpre.com.my
📧 Email: mtmpre@yahoo.com
📱 WhatsApp: +6016-660 7346
01 Sep 2026
