Skip to content
CSA Store
  • CSA Group
  • CSA OnDemandâ„¢
  • CSA Communities
  • Contact Us
  • Catalogue
    • Browse By Subject Area

      • Electrical
      • Fuels & Transportation
      • Petroleum & Natural Gas
      • Environment & Natural Resources
      • Construction & Infrastructure
      • Mechanical & Industrial Equipment
      • Nuclear
      • Health Care and Well-being
      • Worker & Public Safety
      • Management Systems
    • Browse By Publisher

      • ASME
      • ASTM
      • CSA Group
      • ESA
      • IEC
      • ISO
      • NRC
      • ORNAC
      • TSSA
    • ICS Catalogue

      • Browse by International Classification of Standards (ICS Codes)
  • Subscription
    • Browse By Subject Area

      • Electrical
      • Fuels & Transportation
      • Petroleum & Natural Gas
      • Environment & Natural Resources
      • Construction & Infrastructure
      • Mechanical & Industrial Equipment
      • Nuclear
      • Health Care and Well-being
      • Worker & Public Safety
      • Management Systems
    • CSA Subscriptions

      • Overview
      • Collections
    • ICS Catalogue

      • Browse by International Classification of Standards (ICS Codes)
  • Services
Cart Icon0
×
Login / Register
English / CAD

Language

en

fr

Currency

CAD

USD

  • CSA Group
  • CSA OnDemandâ„¢
  • CSA Communities
  • Contact Us
Wishlist

Catalogue

  • Browse By Subject Area

    • Electrical
    • Fuels & Transportation
    • Petroleum & Natural Gas
    • Environment & Natural Resources
    • Construction & Infrastructure
    • Mechanical & Industrial Equipment
    • Nuclear
    • Health Care and Well-being
    • Worker & Public Safety
    • Management Systems
  • Browse By Publisher

    • ASME
    • ASTM
    • CSA Group
    • ESA
    • IEC
    • ISO
    • NRC
    • ORNAC
    • TSSA
  • ICS Catalogue

    • Browse by International Classification of Standards (ICS Codes)

Subscription

  • Browse By Subject Area

    • Electrical
    • Fuels & Transportation
    • Petroleum & Natural Gas
    • Environment & Natural Resources
    • Construction & Infrastructure
    • Mechanical & Industrial Equipment
    • Nuclear
    • Health Care and Well-being
    • Worker & Public Safety
    • Management Systems
  • CSA Subscriptions

    • Overview
    • Collections
  • ICS Catalogue

    • Browse by International Classification of Standards (ICS Codes)

Services

Menu toggle Icon
Login / Register
English / CAD

Language

en

fr

Currency

CAD

USD

Wishlist Cart (
)

Search Section

    • Home
    • CSA Group
    • Worker & Public Safety
    • Occupational Health & Safety
    • Personal Protective Equipment
    • Z107.56-13 (R2018)

    Codes & Standards - Purchase

    Z107.56-13 (R2018)

    Measurement of noise exposure
    SKU: 2422158 Published by CSA Group Publication Year 2013 Reaffirmed in 2018 54 pages Withdrawn

    View Access for this document is only available for viewers in Canada

    Product Details

    • Overview
    • Preface/Scope

    Overview


    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:


    a) Describes procedures for determining the occupational noise exposure level of workers (Lex,T) using sampling techniques


    b) Provides procedures for measuring the occupational noise exposure from all types of noise including continuous noise, tonal noise, and impulsive noise


    c) Applies to individuals (Lex T) or groups (LGroup) with similar noise exposure


    d) 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

    Preface


    This is the fourth edition of CSA Z107.56, Measurement of noise exposure, which is part of the CSA Z107 series of Standards on workplace noise control, vibration control, and occupational audiology. This edition supersedes the third edition, entitled Procedures for the measurement of occupational noise exposure, published in 2006, and previous editions published in 1994 and 1986.


    Scope


    1.1

    This Standard describes procedures for determining the occupational noise exposure level of workers (Lex,T) using sampling techniques. Lex,T represents the long-term noise exposure of workers and is calculated from measurements of Leq,t in the workplace.


    Notes -


    1) Noise exposure has been expressed as % dose in the past. However, the use of Leq,t is recommended, as it is more convenient and less likely to be misunderstood.


    2) The procedures in this Standard normally form part of any occupational hearing conservation program. Users of this Standard should be proficient in noise measurement.


    1.2

    This Standard provides procedures for measuring the occupational noise exposure from all types of noise, e.g., continuous noise, tonal noise, and impulsive noise. All types of noise (including impulsive noise) are included in a single equivalent sound level for an individual or group.


    Note: Although this Standard was written to measure noise exposure in the workplace, it can equally be used to measure non-occupational noise exposures, including those from music players, radios or other sound reproduction devices.


    1.3

    This Standard can be used to determine the noise exposure level of individuals (Lex,T) or extended to groups (LGroup) with similar noise exposures. It can also be used to measure the average noise (Leq,t) from a given job or activity (e.g., operating a particular machine).


    1.4

    This Standard provides for measurements in terms of equivalent sound level, Leq,t (3 dB exchange rate), and calculation of noise exposure level, Lex,T, regardless of noise type. Procedures for calculating related quantities, such as % dose, are provided.


    This Standard may also be used to measure LOSHA (5 dB exchange rate) and calculate the associated indices as shown in Annex D. In this case, the results may not be a good representation of exposure to impulsive noise.


    Note - Measurements taken in Leq cannot be converted to LOSHA , or vice versa, unless the time distribution of sound levels is known.


    1.5

    This Standard provides procedures to determine the noise exposure level of workers with a given precision. In certain cases, the user is only interested in determining that a worker's exposure is above or below the criterion level. Therefore, the procedures in this Standard can be less rigorously applied when the noise exposure level is either far above or far below the criterion level.


    1.6

    In CSA Standards, shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; should is used to express a recommendation or that which is advised but not required; may is used to express an option or that which is permissible within the limits of the standard; and can is used to express possibility or capability.


    Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.


    Notes to tables and figures are considered part of the table or figure and may be written as requirements.


    Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

    copyright imgRequest Copyright Permissions

    Buy

    Quantity
    -
    +
    • FAQs
    • Contact Us
    • Email Product

    GST REG No R119441681
    QST REG No R1006017360

    Compare Formats

    Determine the subscription format that is right for you.

    Features CSA AdvantageTM CSA OnDemandTM
    Offline accessSelectedSelected
    Full-text searchSelectedSelected
    Create highlights and personal notesSelectedSelected
    Newest editions added automaticallySelectedSelected
    Includes all supported languages and archive versionsSelected
    My Files - create customized files by adding multiple clauses, tables or figures from the standard into your own personal File for quick referenceSelected
    Toggle between your files and the full standard to maintain contextSelected
    Instantly preview cross referenced material within the bookSelected
    Export personal notes to ExcelSelected
    Transfer notes and highlights when updates are availableSelected
    Adobe Reader PDF and browser compatible for iOS and AndroidSelected
    Web, Android, iOS CompatibleSelected

    Follow Us On Social Media

    Get Our Newsletter

    Get CSA Newsletter

    • About CSA Store
    • Subscription
    • Services
    • Catalogue
    • FAQ
    • Return Policy
    • FULFILLMENT DETAILS
    • EBOOK SUPPORT
    • Product Updates
    • Contact Us
    • CSA GROUP
    • CSA COMMUNITIES
    • CSA Update Service
    • About CSA Store
    • Subscription
    • Services
    • Catalogue
    • FAQ
    • Return Policy
    • FULFILLMENT DETAILS
    • EBOOK SUPPORT
    • Product Updates
    • Contact Us
    • CSA GROUP
    • CSA COMMUNITIES
    • CSA Update Service

    • General Terms and Conditions
    • Privacy Policy
    • Accessibility
    © 2022 Canadian Standards Association. All rights reserved
    logo close
    Privacy Preference Centre

    Please manage your cookie choices by switching the consent toggles on or off under the Purposes below.

    You may change your preference at any time as described in our Cookie Policy

    • Cookie Settings
    • List of Cookies
    close
      Cookies on CSA Group

      We use Cookies to create a secure and effective website experience for our customers. For more information about Cookies and how you can disable Cookies, visit our privacy policy page. Learn More

      Free Login/Registration Required

      View Access for this document is only available for viewers in Canada.

      A free user account is required to view this document.

      Login or Register