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The Control of Noise at Work Regulations 2005

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Regulation 2(1)

SCHEDULE 1

PART 1Daily Personal Noise Exposure Levels

1.  The daily personal noise exposure level, LEP,d, which corresponds to LEX,8h defined in international standard ISO 1999: 1990 clause 3.6, is expressed in decibels and is ascertained using the formula:

where—

  • Te is the duration of the person’s working day, in seconds;

  • T0 is 28,800 seconds (8 hours); and

  • is the equivalent continuous A-weighted sound pressure level, as defined in ISO 1999: 1990 clause 3.5, in decibels, that represents the sound the person is exposed to during the working day.

2.  If the work is such that the daily exposure consists of two or more periods with different sound levels, the daily personal noise exposure level (LEP,d) for the combination of periods is ascertained using the formula:

where—

  • n is the number of individual periods in the working day;

  • Ti is the duration of period i;

  • (LAeq,T)i is the equivalent continuous A-weighted sound pressure level that represents the sound the person is exposed to during period i; and

  • is equal to Te, the duration of the person’s working day, in seconds.

Regulation 2(1)

PART 2Weekly Personal Noise Exposure Levels

The weekly personal noise exposure, LEP,w, which corresponds to

defined in international standard ISO 1999: 1990 clause 3.6 (note 2) for a nominal week of five working days, is expressed in decibels and is ascertained using the formula:

where—

  • m is the number of working days on which the person is exposed to noise during a week; and

  • (LEP,d)i is the LEP,d for working day i.

Regulation 2(1)

SCHEDULE 2Peak Sound Pressure Level

Peak sound pressure level, LCpeak, is expressed in decibels and is ascertained using the formula:

where—

  • pCpeak; is the maximum value of the C-weighted sound pressure, in Pascals (Pa), to which a person is exposed during the working day; and

  • p0 is 20 µPa.

Regulation 15(2)

SCHEDULE 3Revocations

Regulations revokedReferencesExtent of revocation
The Noise at Work Regulations 1989S.I. 1989/1790The whole Regulations
The Quarries Regulations 1999S.I. 1999/2024Schedule 5 Part II insofar as it amends regulation 2 of the Noise at Work Regulations 1989
The Offshore Electricity and Noise Regulations 1997S.I. 1997/1993Regulation 3
The Personal Protective Equipment at Work Regulations 1992S.I. 1992/2966Schedule 2 Part IX
The Health and Safety (Safety Signs and Signals) Regulations 1996S.I. 1996/341Schedule 3 Part II paragraph 1(a) and (b)
The Offshore Installations and Wells (Design and Construction, etc.) Regulations 1996S.I. 1996/913Schedule 1 paragraph 46(b) and the word “noise” in paragraph 59(b)

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