# 29 CFR 1926.52 - Occupational noise exposure.

§ 1926.52 Occupational noise exposure.

(a) Protection against the effects of noise exposure shall be provided when the sound levels exceed those shown in Table D-2 of this section when measured on the A-scale of a standard sound level meter at slow response.

(b) When employees are subjected to sound levels exceeding those listed in Table D-2 of this section, feasible administrative or engineering controls shall be utilized. If such controls fail to reduce sound levels within the levels of the table, personal protective equipment as required in subpart E, shall be provided and used to reduce sound levels within the levels of the table.

(c) If the variations in noise level involve maxima at intervals of 1 second or less, it is to be considered continuous.

(d)

(1) In all cases where the sound levels exceed the values shown herein, a continuing, effective hearing conservation program shall be administered.

Table D-2 - Permissible Noise Exposures

Duration per day, hours Sound level dBA slow response
8 90
6 92
4 95
3 97
2 100
1 1/2 102
1 105
1/2 110
1/4 or less 115

(2)

(i) When the daily noise exposure is composed of two or more periods of noise exposure of different levels, their combined effect should be considered, rather than the individual effect of each. Exposure to different levels for various periods of time shall be computed according to the formula set forth in paragraph (d)(2)(ii) of this section.

(ii)Fe = (T1/L1) (T2/L2) · · · (Tn/Ln)

Where:
Fe = The equivalent noise exposure factor.
T = The period of noise exposure at any essentially constant level.
L = The duration of the permissible noise exposure at the constant level (from Table D-2).
If the value of Fe exceeds unity (1) the exposure exceeds permissible levels.

(iii) A sample computation showing an application of the formula in paragraph (d)(2)(ii) of this section is as follows. An employee is exposed at these levels for these periods:

110 db A 1/4 hour.
100 db A 1/2 hour.
90 db A 1 1/2 hours.
Fe = ( 1/4/ 1/2) ( 1/2/2) (1 1/2/8)
Fe = 0.500 0.25 0.188
Fe = 0.938
Since the value of Fe does not exceed unity, the exposure is within permissible limits.

(e) Exposure to impulsive or impact noise should not exceed 140 dB peak sound pressure level.

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

This list is taken from the Parallel Table of Authorities and Rules provided by GPO [Government Printing Office].

It is not guaranteed to be accurate or up-to-date, though we do refresh the database weekly. More limitations on accuracy are described at the GPO site.

United States Code
U.S. Code: Title 5 - GOVERNMENT ORGANIZATION AND EMPLOYEES
U.S. Code: Title 6 - DOMESTIC SECURITY
U.S. Code: Title 29 - LABOR
U.S. Code: Title 40 - PUBLIC BUILDINGS, PROPERTY, AND WORKS
U.S. Code: Title 42 - THE PUBLIC HEALTH AND WELFARE
U.S. Code: Title 49 - TRANSPORTATION

Title 29 published on 05-May-2017 03:24

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 29 CFR Part 1926 after this date.

• 2017-03-21; vol. 82 # 53 - Tuesday, March 21, 2017
1. 82 FR 14439 - Occupational Exposure to Beryllium; Further Delay of Effective Date
GPO FDSys XML | Text
DEPARTMENT OF LABOR, Occupational Safety and Health Administration
Final rule; further delay of effective date.
As of March 21, 2017, the effective date of the final rule amending 29 CFR parts 1910, 1915, and 1926 that published in the Federal Register of January 9, 2017 at 82 FR 2470, delayed at 82 FR 8901 on February 1, 2017, is further delayed to May 20, 2017.
29 CFR Parts 1910, 1915, and 1926

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