Directives for determining methods for measuring and evaluation of workplace noise and ultrasound Jurisdiction Czechoslovakia - Czech Socialist Republic Year 1977 Published in Czech Original/other title [Czech] Směrnice, jimiž se stanoví způsob měření a hodnocení hluku a ultrazvuku v pracovním prostředí Serial title Hygienické předpisy Source 1977, Vol.37, p.51-90. Descriptors [Primary] Czech Socialist Republic, Czechoslovakia, noise, noise measurement, ultrasound [Secondary] background noise, continuous noise, description of technique, directive, exposure evaluation, hearing damage risk criteria, impulse noise, recurrent noise Subject category Physical hazards Abstract Contents of these directives (effective 1 July 1977): definitions; measuring instruments - testing and verification; data checked and recorded when measuring noise and ultrasound (type, duration of exposure); measurement of noise and ultrasound (measuring method, place, background noise, measurement of steady-state, recurrent or impulse noise, verification of effects of noise); interpretation of results of measurement (general principles, calculation of mean levels, calculation of equivalent A noise levels, continuous noise, variable noise, impulse noise, calculation of noise or ultrasound at the workplace or in the work area, calculation of stress due to noise of ultrasound); evaluation of workplace environment noise and ultrasound. Appendix: method for determining maximum permissible levels of exposure to noise and ultrasound in the workplace. CIS No. 79-397 Database ID 30910