{"id":261,"date":"2024-04-16T14:33:56","date_gmt":"2024-04-16T14:33:56","guid":{"rendered":"https:\/\/ehs-hub.contentstudioo.com\/?p=261"},"modified":"2025-01-11T10:39:04","modified_gmt":"2025-01-11T05:09:04","slug":"noise-what-is-it","status":"publish","type":"post","link":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/2024\/04\/16\/noise-what-is-it\/","title":{"rendered":"Noise? What is it?"},"content":{"rendered":"\n
\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n<\/figure>\n\n\n\n

NOISE :-<\/p>\n\n\n\n

Nothing but\u00a0 \u201cUnwanted Sound\u201d<\/p>\n\n\n\n

<\/p>\n\n\n\n

Noise: A Safety Concern<\/strong><\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Noise adversely affects the human behavior.<\/p>\n\n\n\n

Noise induced hearing loss (exposure to high noise levels) is a notifiable disease under Schedule\u00a0 III <\/strong>( no.: 22) of Factories Act 1948<\/p>\n\n\n\n

Section 89 of Factories Act 1948 and rules framed under it ( GFR No.: 104) demands reporting of the notifiable disease (schedule III) to the statutory authorities.<\/p>\n\n\n\n

Schedule 23 of GFR 1963 (Rule no.: 102) namely \u201cOperations involving High Noise Levels\u201d demands for protection against noise, reduction of noise by engineering controls and auditory examination of every worker employed in areas of high noise by a Medical Practitioner.<\/p>\n\n\n\n

Sound Basics:<\/strong><\/p>\n\n\n\n

\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n<\/figure>\n\n\n\n

Frequency:<\/strong><\/p>\n\n\n\n

Rate at which the variation in air pressure takes place. It is expressed in Hertz (Hz). Audible range of frequency to Human Ear is 20-20000 Hz.<\/p>\n\n\n\n

Intensity<\/strong>:<\/p>\n\n\n\n

The rate at which the sound energy passes through a unit area normal to the direction of propagation is known as sound intensity. The unit ofmeasurement is decibel. The scale most often used in the measurement of decibels is the \u201cA\u201d scale & expressed as db(A).<\/p>\n\n\n\n

Effects (Hazards) of Noise:<\/strong><\/h3>\n\n\n\n

The effects are categorized as Auditory & Non-auditory.<\/p>\n\n\n\n

\u00a0 Auditory<\/strong><\/p>\n\n\n\n

  -Temporary threshold<\/p>\n\n\n\n

  -Permanent threshold<\/p>\n\n\n\n

  -Sudden rupture of an ear-drum on short exposure to high     impact noise.<\/p>\n\n\n\n

\u00a0 Non-auditory<\/strong><\/p>\n\n\n\n

  -Annoyance (Irritation)<\/p>\n\n\n\n

  -Alteration in heart rate, blood pressure<\/p>\n\n\n\n

  -Decreased role of color perception<\/p>\n\n\n\n

  -Sleeplessness<\/p>\n\n\n\n

\u00a0 -Interference in speech communication<\/p>\n\n\n\n

Noise frequency & intensity<\/p>\n\n\n\n

Exposure time<\/p>\n\n\n\n

Distance from noise source<\/p>\n\n\n\n

Individual susceptibility depending on age, health etc.<\/p>\n\n\n\n

Exposure Limits of Noise:<\/strong><\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Control of Noise:<\/strong><\/h3>\n\n\n\n

Noise can be controlled at three stages:<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

At source<\/strong><\/h4>\n\n\n\n
    \n
  1. Isolation<\/li>\n<\/ol>\n\n\n\n

    2.\u00a0 Substitution<\/p>\n\n\n\n

    3.\u00a0 Enclosures<\/p>\n\n\n\n

    4.\u00a0 Spplication of acoustic materials<\/p>\n\n\n\n

    5.\u00a0 Proper and timely maintenance<\/p>\n\n\n\n

    At Path:<\/strong><\/h4>\n\n\n\n
      \n
    1. Reduction in distance from source to receiver<\/li>\n<\/ol>\n\n\n\n

      2.\u00a0Segregation of machines by means of enclosure,\u00a0partition walls<\/p>\n\n\n\n

      3.\u00a0Use of proper acoustic material just like concrete of wood.<\/p>\n\n\n\n

      At Receiver<\/strong><\/h4>\n\n\n\n

      The third line of defense, that is use of Personal Protective Appliances\u2026Ear plugs, Ear muffs.<\/p>\n\n\n\n

      Audiometry:<\/strong><\/h3>\n\n\n\n

      Every worker employed in areas where the noise exceeds the maximum permissible levels should be subjected to an auditory examination<\/strong> by a registered medical practitioner having qualification M.B.B.S. or equivalent within 14 days of his\u00a0 or her first employment and thereafter, should be re-examined at least once in every 12 months.<\/p>\n\n\n\n

      Audiometric tests measure a person\u2019s threshold of hearing at selected sound frequencies. The test instrument is called and Audiometer & records obtained are called an audiogram<\/p>\n\n\n\n

      \"\"<\/figure>\n\n\n\n

      Extra Comments:<\/strong><\/h3>\n\n\n\n

      Noise is an environmental concern<\/p>\n\n\n\n

      Noise pollution (R & C) Rules, 2000 framed\u00a0\u00a0 under Environment Protection Act, 1986<\/p>\n\n\n\n

      You are acted upon by Noise:<\/p>\n\n\n\n

      If employees say that they have heard ringing noises in their ears at the end of the workday, they may be exposed to too much noise.<\/p>\n\n\n\n

      If employees complain that the sounds of speech or music seem muffled after leaving work, but that their hearing is fairly clear in the morning when they return to work, they may be exposed to noise levels that cause a partial temporary loss of hearing, which can become permanent with repeated exposure.<\/p>\n","protected":false},"excerpt":{"rendered":"

      NOISE :- Nothing but\u00a0 \u201cUnwanted Sound\u201d Noise: A Safety Concern Noise adversely affects the human behavior. Noise induced hearing loss (exposure to high noise levels) … <\/p>\n","protected":false},"author":2,"featured_media":269,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[129],"tags":[],"class_list":["post-261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-safety-blog"],"_links":{"self":[{"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/posts\/261","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/comments?post=261"}],"version-history":[{"count":1,"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/posts\/261\/revisions"}],"predecessor-version":[{"id":271,"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/posts\/261\/revisions\/271"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/media\/269"}],"wp:attachment":[{"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/media?parent=261"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/categories?post=261"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ehs-hub.contentstudioo.com\/index.php\/wp-json\/wp\/v2\/tags?post=261"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}