Sound Level Meter
In this Part, “sound level meter” means an instrument for measuring levels of sound and impulse sound that meets the standards set out in ANSI Standard ANSI 21.4-1983, Specification for Sound Level Meters, as amended from time to time and is referred to in that Standard at type 0, 1 or 2.
Source: Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. Regulations
Source: Oil and Gas Occupational Safety and Health Regulations, SOR/87-612, Canada, current to April 29, 2013. Regulations