OH Consultant

Diesel Particulate Monitoring

Diesel exhaust particulate matter (DPM) exposure assessment

Current WES
Not listed
New WEL (Dec 2026)
0.01 mg/m³ (respirable EC)New limit

What Is Diesel Particulate Monitoring?

Diesel particulate monitoring measures worker exposure to the submicron carbon particles and adsorbed organic compounds in diesel engine exhaust. IARC classified diesel exhaust as carcinogenic to humans (Group 1) in 2012, with strong evidence for lung cancer.

Elemental carbon (EC) is the preferred exposure metric. The current WES list has no entry for diesel particulate matter. The WEL list adds a limit of 0.01 mg/m³ (as respirable elemental carbon, TWA-8h) from 1 December 2026. Monitoring helps evaluate ventilation effectiveness and diesel fleet management strategies.

How Is It Done?

Personal sampling via quartz fibre filter in cassette. Analysis for elemental carbon (EC) and organic carbon (OC) by thermal-optical method (NIOSH 5040).

When You Need This

  • +Underground mining operations with diesel equipment
  • +Enclosed loading docks and warehouses with diesel forklifts
  • +Tunnelling and civil construction with diesel plant
  • +Fleet transition planning (diesel to electric)
  • +Worker health complaints related to exhaust exposure

Relevant Standards

NIOSH 5040AIOH Position Paper on DPM

Common Industries

Related Monitoring

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