Regulations (Preambles to Final Rules) - Table of Contents Regulations (Preambles to Final Rules) - Table of Contents
• Record Type: Occupational Exposure to 4,4' Methylenedianiline (MDA)
• Section: 0
• Title: Intro to 29 CFR Parts 1910 and 1926, Occupational Exposure to 4,4' Methylenedianiline (MDA)

DEPARTMENT OF LABOR

Occupational Safety and Health Administration

29 CFR Parts 1910 and 1926

[Docket No. H040]

Occupational Exposure to 4,4' Methylenedianiline (MDA)

AGENCY: Occupational Safety and Health Administration (OSHA), Labor.

ACTION: Final rule.

SUMMARY: By this document, the Occupational Safety and Health Administration is promulgating new standards regulating exposure to MDA. The basis for this action is a determination by the Assistant Secretary, based on animal and human data, that exposure to MDA at the current occupational exposure levels causes adverse effects on employee health including an increased risk of cancer and that limiting occupational exposure to MDA to an eight-hour time-weighted average (TWA) of 10 parts per billion (ppb), establishing a short-term exposure limit (STEL) of 100 ppb, and implementing associated provisions will significantly reduce this risk. In addition to establishing permissible exposure limits (PELs) for MDA, this regulation includes requirements such as medical surveillance, exposure monitoring, hygiene facilities, engineering controls and work practices, proper respirator use, and recordkeeping. An action level of 5 ppb is included in this final standard as a mechanism for exempting employers from the obligation to comply with certain requirements, such as employee exposure monitoring, in instances where the employer can demonstrate that employee exposures are at or below the action level.

The standards apply to all industries covered by the OSH Act including general industry, construction, and maritime.

For the most part, the provisions adopted by OSHA in these final regulations were recommended by the MDA Mediated Rulemaking Advisory Committee (Committee).

Effective Date: These final rules shall become effective on September 9, 1992.

ADDRESSES: In compliance with 28 U.S.C. 2112(a), the Agency designates for receipt of petitions for review of the standard, the Associate Solicitor for Occupational Safety and Health, Office of the Solicitor, Room S-4004, U.S. Department of Labor, 200 Constitution Avenue NW., Washington, DC 20210. Any such petitions for review must be filed not later than the 59th day following the promulgation of the standard. See section 6(f) of the OSH Act; 29 CFR 1911.18(d) and United Mine Workers of America v. Mine Safety and Health Administration, 900 F.2d 384 (D.C. Cir. 1990).

FOR FURTHER INFORMATION CONTACT: Mr. James F. Foster, Director Office of Public Affairs, OSHA, Rm. N-3641, 200 Constitution Avenue, N.W., Washington, D.C., 20210, Telephone (202) 523-8151. Copies of this document may be obtained two weeks after the publication date from the OSHA Publication Office, Rm. N-3101, at the above address, or by calling (202-523-9667) or at any OSHA regional or area office.

SUPPLEMENTARY INFORMATION:


Table of Contents

I.    Introduction
II.   Pertinent Legal Authority
III.  Events Leading to the Final Standard
IV.   Properties, Manufacture, and Uses of MDA
V.    Health Effects
      Acute Effects
      Chronic Effects
      Reproductive Effects
      Teratogenic Effects
      Absorption, Distribution and Deposition
VI.   Risk Assessment
VII.  Significance of Risk
VIII. Summary of the Regulatory Impact Analysis and Regulatory
      Flexibility Analysis
IX.   Summary and Explanation of the
      Standard for General Industry
X.    Summary and Explanation of the
      Standard for the Construction Industry
XI.   Environmental Assessment; Findings of No Significant Impact
XII.  State Plan Requirements
XIII. Federalism
XIV.  Clearance of Information Collection Requirements
XV.   Authority and Signature
XVI.  Regulatory Text

General Industry

Appendix A to 1910.1050 - Substance Data Sheet For 4,4'-Methylenedianiline
Appendix B to 1910.1050 - Substance Technical Guidelines, MDA
Appendix C to 1910.1050 - Medical Surveillance Guidelines for MDA
Appendix D to 1910.1050 - Sampling and Analytical Methods for MDA
  Monitoring and Measurement Procedures
Appendix E to 1910.1050-Qualitative and Quantitative Fit Testing
  Procedures

Construction Industry

Appendix A to 1926.60 - Substance Data Sheet For 4,4'-Methylenedianiline
Appendix B to 1926.60 - Substance Technical Guidelines, MDA
Appendix C to 1926.60 - Medical Surveillance Guidelines for MDA
Appendix D to 1926.60 - Sampling and Analytical Methods for MDA
  Monitoring and Measurement Procedures
Appendix E to 1926.60 - Qualitative and Quantitative Fit Testing
  Procedures

[57 FR 35630, Aug. 10, 1992]

Regulations (Preambles to Final Rules) - Table of Contents Regulations (Preambles to Final Rules) - Table of Contents