[Code of Federal Regulations]
[Title 40, Volume 22]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR211.206-2]

[Page 178-179]
 
                   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 179]]

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

[45 FR 8275, Feb. 6, 1980]