Source: http://www.law.cornell.edu/cfr/text/49/part-229/appendix-H
Timestamp: 2014-12-22 06:31:02
Document Index: 279585109

Matched Legal Cases: ['art 229', 'art 229', 'art 229', 'art 229', 'art 229', 'art 229', 'art 51', '§ 229']

49 CFR Part 229, Appendix H to Part 229 - Static Noise Test Protocols-In-Cab Static | LII / Legal Information Institute
CFR › Title 49 › Subtitle B › Chapter II › Part 229 › Appendix H 49 CFR Part 229, Appendix H to Part 229 - Static Noise Test Protocols-In-Cab Static
Pt. 229, App. H
Appendix H to Part 229—Static Noise Test Protocols—In-Cab Static
The instrumentation used should conform to the following: An integrating-averaging sound level meter shall meet all the requirements of ANSI S1.43-1997 (Reaffirmed 2002), “Specifications for Integrating-Averaging Sound Level Meters,” for a Type 1 Instrument. In the event that a Type 1 instrument is not available, the measurements may be conducted with a Type 2 instrument. The acoustic calibrator shall meet the requirement of the ANSI S1.40-1984 (Reaffirmed 2001), “Specification for Acoustical Calibrators.” The Director of the Federal Register approves the incorporation by reference of ANSI S1.43-1997 (Reaffirmed 2002) and ANSI S1.40-1984 (Reaffirmed 2001) in this section in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. You may obtain a copy of the incorporated standards from the American National Standards Institute at 1819 L Street, NW., Washington, DC 20036 or http://www.ansi.org.
You may inspect a copy of the incorporated standards at the Federal Railroad Administration, Docket Room, 1200 New Jersey Avenue, SE., Washington, DC 20950, or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html
(1) LAeq, T is defined as the A-weighted, equivalent sound level for a duration of T seconds, and the sound level meter shall be set for A-weighting with slow response.
(8) After the engine speed has become constant and the in-cab noise is continuous, LAeq, T shall be measured, either directly or using a 1 second sampling interval, for a minimum duration of 30 seconds at each measurement position (LAeq, 30s).
(9) The highest LAeq, 30s of the 4 measurement positions shall be used for determining compliance with § 229.121(a).
(6) Where a locomotive fails a test and is re-tested under the provisions of § III(9) of this appendix, the suspected reason(s) for the failure.
[71 FR 63136, Oct. 27, 2006, as amended at 74 FR 25174, May 27, 2009]