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Comparison of sound power levels of powered hand tools tested under loaded and unloaded conditions.

Authors
Zechmann-EL; Hayden-CS II
Source
Inter-Noise 2006. The 35th International Congress and Exposition on Noise Control Engineering, December 3-6, 2006, Honolulu, Hawaii. West Lafayette, IN: International Institute of Noise Control Engineering, 2007 Aug; 2:774-783
Link
NIOSHTIC No.
20037945
Abstract
Most electrically powered hand tools are specified in ANSI Standard S12.15 to have sound power levels measured while the power tool is in the unloaded condition (full-speed, no load or just simply idling). In an effort to properly define noise sources and levels on construction sites, sound power level data was gathered in both the loaded and unloaded condition from a variety of electrically powered hand tools. This paper compares the differences in the magnitude of the sound power level data and discusses whether existing test standards are in harmony with the reasons that we measure and subsequently use that data. On average for all tools tested, there is a 4.1 dBA increase in sound power level when the power tool is tested in the loaded condition compared to testing in the unloaded condition. In order to provide relevant data, specific recommendations are made to revise existing ANSI Standard S12.15. The recommendations include specifying loaded conditions for testing, standardization of test jig setup and work piece material size and type.
Keywords
Noise; Noise-levels; Mathematical-models; Work-environment; Power-tools; Hand-tools; Sound; Exposure-assessment; Noise-measurement; Noise-sources; Construction; Construction-equipment; Electrical-equipment; Standards
Contact
Edward L. Zechmann, National Institute for Occupational Safety and Health, 4676 Columbia Parkway, C27, Cincinnati, OH 45226
Publication Date
20070801
Document Type
Conference/Symposia Proceedings
Email Address
Ezechmann@cdc.gov
Fiscal Year
2007
NTIS Accession No.
NTIS Price
ISBN No.
9781604231366
NIOSH Division
DART
Source Name
Inter-Noise 2006. The 35th International Congress and Exposition on Noise Control Engineering, December 3-6, 2006, Honolulu, Hawaii.
State
HI; OH; IN
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