[Code of Federal Regulations]

[Title 49, Volume 4]

[Revised as of October 1, 2005]

From the U.S. Government Printing Office via GPO Access

[CITE: 49CFR210.31]



[Page 62]

 

                        TITLE 49--TRANSPORTATION

 

       CHAPTER II--FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF 

                             TRANSPORTATION

 

PART 210_RAILROAD NOISE EMIS SION COMPLIANCE REGULATIONS

--Table of Contents

 

                    Subpart B_Inspection and Testing

 

Sec. 210.31  Operation standards (stationary locomotives at 30 meters).



    (a) For stationary locomotives at load cells:

    (1) Each noise emission test shall begin after the engine of the 

locomotive has attained the normal cooling water operating temperature 

as prescribed by the locomotive manufacturer.

    (2) Noise emission testing in idle or maximum throttle setting shall 

start after a 40 second stabilization period in the throttle setting 

selected for the test.

    (3) After the stabilization period as prescribed in paragraph (a)(2) 

of this section, the A-weighted sound level reading in decibels shall be 

observed for an additional 30-second period in the throttle setting 

selected for the test.

    (4) The maximum A-weighted sound level reading in decibels that is 

observed during the 30-second period of time prescribed in paragraph 

(a)(3) of this section shall be used for test measurement purposes.

    (b) The following data determined by any locomotive noise emission 

test conducted after December 31, 1976, shall be recorded in the 

``Remarks'' section on the reverse side of Form F 6180.49:

    (1) Location of test;

    (2) Type of test;

    (3) Date of test; and

    (4) The A-weighted sound level reading in decibels obtained during 

the passby test, or the readings obtained at idle throttle setting and 

maximum throttle setting during a load cell test.

    (c) Any locomotive subject to this part that is found not to be in 

compliance with the Standards as a result of a passby test shall be 

subjected to a load cell test or another passby test prior to return to 

service, except that no such retest shall be required if the cause of 

the noise defect is readily apparent and is corrected by the replacement 

of defective components or by a normal maintenance or repair procedure.

    (d) The last entry recorded on Form F 6180.49 as required in 

paragraph (b) of this section shall be transcribed to a new Form FRA F 

6180.49 when it is posted in the locomotive cab.

    (e) Locomotives tested pursuant to the procedures prescribed in this 

part and in the Standards shall be considered in noncompliance wherever 

the test measurement, minus the appropriate tolerance (Sec. 210.25), 

exceeds the noise emission levels precribed in appendix A of this part.



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