Noise in Mines- for DGMS SMC & FMC EXAM- AS PER DGMS CIRCULAR

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Recommended Noise Standards-
Based on the recent ILO Code of Practice* the following standards and guidelines are provisionally recommended for attainment, as far as practicable:
* A warning limit value of 85 dB (A) may be set as the level below which very little risk to an
unprotected ear, of hearing impairment exists for an eight hour exposure.
* The danger limit value shall be 90 dB (A), above which the danger of hearing impairment and
deafness may result from an unprotected ear:
Provided that during emergencies, or because of unforeseen technical reasons, a worker may be
temporarily authorised to exceed the daily dose, but only if on the next day he recuperates so that the maximum weekly dose does not exceed the value specified above.
* A worker should not be allowed to enter, without appropriate ear protection, an area in which the
noise level is 115 dB (A) or more.
* Personal protective equipment shall be worn, if there are single isolated outbursts of noise which
can go above 130 dB (A) Impulse or 120 dB (A) ‘Fast’.
* No worker shall be allowed to enter an area where the noise level exceeds 140dB(A).
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58dB (A)

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excellent concept on sound numerical

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[@agamadhar8917]

D(59)

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Very good.. Thanks

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very good topic

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Bahut hi achchi jankari di sir aapne 🙏🙏👍🏻❤️ Thanks.

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58db

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Thank u so much for this video

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Thank u sir

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3 Digit ka kaise karange

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Thanks

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D

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Thanks

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Super bro..

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What is the limite of sound (dB)) at face of solidblasting ?

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[@miningmystery9122]

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[@anilgosai4960]

Pls send circular year or no.

[@prodarling5620]

What if there are 3 or more different noise levels. Like 58db 68db 69db 67db

[@MiningTechnicalMT]

Highest and second highest then again same way

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C

[@sudheerreddy9181]

58 dB(A)

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a

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A 58 dB

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Ans 58.4

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👍👍👍👍👍👍👍👍👍

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Thank you for video...Sir... still waiting for full process of overman competency exemption certificate with new rules and regulations

[@MiningTechnicalMT]

Ok

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I got in 4 months

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Information about ccl

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1st q ans is 58db

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अगर दो-तीन digit है और पहले दो digit मे difference 2 ya 3 का और अगले दो digit मे difference 18 है तो कौन सा diffrennce माना जाएगा..

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58 db

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मेहनत करो

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58db

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58db

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58db