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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:
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:
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.
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:
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.
Peak sound pressure level, LCpeak, is expressed in decibels and is ascertained using the formula:
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.
|Regulations revoked||References||Extent of revocation|
|The Noise at Work Regulations 1989||S.I. 1989/1790||The whole Regulations|
|The Quarries Regulations 1999||S.I. 1999/2024||Schedule 5 Part II insofar as it amends regulation 2 of the Noise at Work Regulations 1989|
|The Offshore Electricity and Noise Regulations 1997||S.I. 1997/1993||Regulation 3|
|The Personal Protective Equipment at Work Regulations 1992||S.I. 1992/2966||Schedule 2 Part IX|
|The Health and Safety (Safety Signs and Signals) Regulations 1996||S.I. 1996/341||Schedule 3 Part II paragraph 1(a) and (b)|
|The Offshore Installations and Wells (Design and Construction, etc.) Regulations 1996||S.I. 1996/913||Schedule 1 paragraph 46(b) and the word “noise” in paragraph 59(b)|
Explanatory Memorandum sets out a brief statement of the purpose of a Statutory Instrument and provides information about its policy objective and policy implications. They aim to make the Statutory Instrument accessible to readers who are not legally qualified accompany any Statutory Instrument or Draft Statutory Instrument laid before Parliament from June 2004 onwards.
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