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Health Surveillance & Chemical Hazardous to Health Monitoring Program

Where an assessment of the risk to health from hazardous chemicals indicates that the monitoring of exposure is required or is appropriate to ensure the maintenance of adequate employee exposure control, the Occupational Safety and Health (Use and Standard of Exposure of Chemical Hazardous to Health) Regulations 2000, require that employers monitor such exposures in accordance with an approved method of monitoring and analysis, and that it be conducted by a hygiene technician registered with the Department of Occupational Safety and Health.

The two main objectives of monitoring chemical exposure are:

  • To monitor the integrity and performance of hazard control systems which:
    • Is concerned with measuring changes in ambient levels in order to follow trends of improvement (or deterioration) in air quality; and
    • Is located in fixed positions (area sampling), and normally in close proximity to contaminant sources; and

2.   To assess health risk of persons at work place which:

  • Is directed towards the measurement of personal exposure to airborne toxic substances; and
  • Is located in the breathing zone (personal sampling), and preferably positioned on the person to be assessed.