[Code of Federal Regulations]

[Title 40, Volume 24]

[Revised as of July 1, 2006]

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

[CITE: 40CFR211.206-2]



[Page 180-181]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 211_PRODUCT NOISE LABELING--Table of Contents

 

                  Subpart B_Hearing Protective Devices

 

Sec.  211.206-2  Alternative test data.



    (a) In lieu of testing according to Sec.  211.206-1, manufacturers 

may use the latest available test data obtained according to ANSI STD 

Z24.22-1957 or ANSI STD S3.19-1974 to determine the mean attenuation and 

standard deviation for each test frequency and the NRR calculated from 

those values. Manufacturers whose data is based on the ANSI STD Z24.22-

1957 measurement procedure must state in the supporting information 

required by Sec.  211.204-4 that the mean attenuation and standard 

deviation values used to calculate the NRR are based on ANSI STD Z24.22-

1957.

    (b) Manufacturers who initially use available data based on ANSI STD 

Z24.22-1957 must retest within one year of the effective date of this 

regulation (by September 27, 1981) the affected categories of hearing 

protectors in accordance with Sec.  211.206-1 of the regulation, and 

must relabel those categories as necessary.

    (c) Manufacturers who use available data based on ANSI STD S3.19-

1974 are not required to retest the affected categories of hearing 

protectors.

    (d) If a manufacturer has both ANSI STD S3.19-1974 test data and 

ANSI STD Z24.22-1957 test data on a hearing protector category, that 

manufacturer



[[Page 181]]



must use the data obtained according to ANSI STD S3.19-1974.



[45 FR 8275, Feb. 6, 1980]