|Document ID (ISN)||77756|
|Convention or series no.
||Offshore Technology Report OTO 2000 074
||Simpson M.E., MacKenzie J.
Health and Safety Executive
||Noise exposure limits under hyperbaric conditions
||HSE Books, P.O. Box 1999, Sudbury, Suffolk CO10 2WA, United Kingdom, 2000. vi, 53p. Illus. 48 ref.
||An examination of data available on the sources of noise to which divers are exposed suggests that sound pressure levels both underwater and in diving chambers often exceed those allowable to workers onshore. However, sensitivity to different sound conditions is known to be altered in hyperbaric conditions, and current noise exposure limits specified in the Noise at Work Regulations 1989 (see CIS 90-21) are acknowledged to be inappropriate. Furthermore, there are difficulties in measuring noise levels, since calibrated microphones designed to work under normal atmospheric pressure will respond differently in hyperbaric environments. In the absence of complete understanding of how to assess noise attenuation in differing media across the range of frequencies, it is recommended that noise reduction measures be implemented as a precautionary measure. Several noise reduction measures which are currently under development are discussed.
||hyperbaric pressure; diving; noise level
||threshold limit values; United Kingdom; report; legislation; sound attenuation; exposure evaluation; noise dosimetry; sound propagation
||E - Books, reports, proceedings
|Country / State or Province||United Kingdom|
||Noise, hearing and vibration
|Broad subject area(s)