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SAE J1281 (APR2022)

Operator Sound Pressure Level Exposure Measurement Procedure for Powered Recreational Craft
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SAE J1281 (APR2022)

Operator Sound Pressure Level Exposure Measurement Procedure for Powered Recreational Craft

PUBLISH DATE 2022
PAGES 7
SAE J1281 (APR2022)
This SAE Standard establishes the procedure for determining the operator duty cycle sound pressure level L odc to which operators of powered recreational craft up to 24 m in length are exposed during typical operation as determined by marine engine duty cycle studies. This document describes the instrumentation, the required calibration procedures, the test site, the specifications for “standard craft”, the craft operating conditions, microphone positioning, test procedure, engine speeds for each of the Duty Cycle modes and the formula and table for calculating the Duty Cycle operator ear sound pressure level. This document is subject to change to keep pace with technical advances as well as other international standards and practices. Changes in this Revision: The sound pressure level measurements performed while applying this document are based on the Five-Mode Marine Engine Duty Cycle instead of a single engine speed. A calculation is required to obtain the Duty Cycle operator ear sound pressure level (L odc ). Provisions for type testing are provided along with specifications for Standard Craft.
SDO SAE: SAE International
Document Number J1281
Publication Date April 25, 2022
Language en - English
Page Count 7
Revision Level 202204
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