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Publications Z107.56-13 (R2018)

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Z107.56-13 (R2018) - Measurement of noise exposure

Publication Year:

  • 2013

Total Pages:


Reaffirmed Year:

  • 2018


  • CSA

CSA Z107.56 - Procedures for the Measurement of Occupational Noise Exposure

Construction Worker wearing hearing protection

Workers in many occupational sectors – including manufacturing, mining, construction, transportation, and emergency services – often perform their jobs while exposed to high levels of occupational noise. Long-term exposure to noise can result in both hearing loss and stress-related illness. As part of the series of standard for acoustics and noise control, this third edition of Z107.56 focuses on procedures for measuring occupational noise exposure to determine if the exposure poses a threat to worker safety.

Highlights of Z107.56 Include:

  • Describes procedures for determining the occupational noise exposure level of workers (Lex,T) using sampling techniques
  • Provides procedures for measuring the occupational noise exposure from all types of noise including continuous noise, tonal noise, and impulsive noise
  • Applies to individuals (Lex T) or groups (LGroup) with similar noise exposure
  • Designed to be rigorously applied to determine noise exposure with a given precision, or less rigorously applied to determine noise exposure above or below a given criterion level

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GST REG No R119441681
QST REG No R1006017360