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CISDOC database

Document ID (ISN)77756
CIS number 01-1805
Year 2000
Convention or series no. Offshore Technology Report OTO 2000 074
Author(s) Simpson M.E., MacKenzie J.
Health and Safety Executive
Title Noise exposure limits under hyperbaric conditions
Bibliographic information HSE Books, P.O. Box 1999, Sudbury, Suffolk CO10 2WA, United Kingdom, 2000. vi, 53p. Illus. 48 ref.
Abstract 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.
Descriptors (primary) hyperbaric pressure; diving; noise level
Descriptors (secondary) threshold limit values; United Kingdom; report; legislation; sound attenuation; exposure evaluation; noise dosimetry; sound propagation
Document type E - Books, reports, proceedings
Country / State or ProvinceUnited Kingdom
Subject(s) Noise, hearing and vibration
Broad subject area(s) Physical hazards
Browse category(ies) Noise
Hyperbaric pressure