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LEGISLATIVE INTERPRETATIONS

OCCUPATIONAL HEALTH AND SAFETY ACT

Air contaminants – Instruments calibration

Topic: Air contaminants – Instruments calibration Issued By: V.P.,WorkSafe Services
Statute: Regulation 91-191 Date Issued: December 11, 1998
Section: 24(4) Date Revised:

24(4) Where an employer or an employee has reason to believe that the level of concentration of an air contaminant may be approaching 50% of the threshold limit value, the employer shall ensure that the air is tested to determine the level of concentration of the air contaminant.

Question:
Is it necessary to calibrate instruments before testing?

Answer:
While the subsection does not make specific reference to calibration, it is necessary to calibrate instruments before testing.

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