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BS EN 12056-2:2000 covers wastewater drainage systems which operate under gravity
a) The terms used for the types of screeds take account of developments in European standardization
designed to meet particular shaft conditions and machinery requirements
b) welded joints (in air or sea water) in such material
and longevity of pipes
Acoustics. Hearing protectors - Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture Ingestion-build-58320 BS EN 12056-2:2000 covers wastewater1 Scope This part of ISO 4869 specifies a method for measuring the insertion loss of ear muff type hearing protectors using an acoustic test fixture. The method is applicable to the investigation of production spreads of performance as part of type approval or certification procedures, and to the investigation of the change of performance with age. It is intended to ensure that ear muffhearing protector samples submitted for subjective testing of
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