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Metalworking Fluids

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OSHA Standards

State Standards

There are twenty-eight OSHA-approved State Plans, operating state-wide occupational safety and health programs. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or more stringent requirements.

Metalworking fluids (MWFs) hazards are addressed in specific standards for general industry, shipyard employment, and the construction industry. This section highlights OSHA standards, Federal Register notices (rules, proposed rules, and notices), and letters of interpretation (official letters of interpretation of the standards) related to MWFs.

General Industry (29 CFR 1910)

  • 1910 Subpart Z, Toxic and hazardous substances [related topic page]
    • 1910.1000, Air contaminants
      • Table Z-1, Limits for air contaminants
        • Oil Mist, mineral: 5 mg/m³
        • Particulates not otherwise regulated, total dust: 15 mg/m³
        • Particulates not otherwise regulated (PNOR), respirable fraction: 5 mg/m³

Shipyard Employment (29 CFR 1915)

  • 1915 Subpart Z, Toxic and hazardous substances
    • 1915.1000, Air contaminants
      • Oil Mist, mineral: 5 mg/m³
      • Particulates not otherwise regulated (PNOR), total dust organic and inorganic: 15 mg/m³

Construction Industry (29 CFR 1926)

  • 1926 Subpart D, Occupational health and environmental controls
    • 1926.55, Gases, vapors, fumes, dusts, and mists
      • Appendix A, Gases, vapors, fumes, dusts, and mists
        • Oil Mist, mineral: 5 mg/m³
        • Particulates not otherwise regulated (PNOR), total dust organic and inorganic: 15 mg/m³
Federal Register Notices
Letters of Interpretation

State Standards

There are twenty-eight OSHA-approved State Plans, operating state-wide occupational safety and health programs. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or more stringent requirements.

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