Air Contaminants Standard 29 CFR

The purpose of the air contaminants standards are to reduce risk of occupational illness for workers by reducing permissible exposure limits (PEL) for chemicals. Table 14.10.3 lists the PELs [8-hr time-weighted average (TWA) exposure] for the solvents discussed. To achieve complianee with the PEL, administrative or engineering controls must first be determined and implemented, whenever feasible. When such controls are not feasible to achieve full eompliance, personal protective equipment, work practices, or any other protective measures are to be used to keep employee exposure below the PEL. 

Chemical Name (CAS No.) Permissible Exposure Limit (PEL) [Health Risk Basis for the PEL] 

Hexane isomers None new PEL was 500 ppm/1760 mg/m (1000 ppm STEL) same as ACGIH (TLV) [narosis] 

Commercial isohexane (none) (Same as hexane isomer) 

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The chemical name found in the OSHA General Industry Air Contaminants Standard (29 CFR 1910.1000) is listed in the blue box in the top left portion of each chemical table. This name is referred to as the primary name in the Chemical, Synonym, and Trade Name Index (page 383). 

The OSHA permissible exposure limits (PELs), as found in Tables Z-1, Z-2, and Z-3 of the OSHA General Industry Air Contaminants Standard (29 CFR 1910.1000), that were effective on July 1,1993 and which are currently enforced by OSHA are listed next. 

Air Contaminants Rule, 29 CFR 1910.1000 Hazard Communication Standard, 29 CFR 1910.1200 OSHA Safety Standards ... 

OSHA (2006) Occupational Safety and Health Administration. Permissible Exposure Limits (PELs) Establishing PELs. Regulations (Standards - 29 CFR) Table Z-1 Limits for Air Contaminants. 1910.1000 Table Z-1. http //www.oshagov/SLTC/pel/recognition.html... 

OSHA] Occupational Safety and Health Administration. 2001. OSHA regulations (standards—29 CFR) air contaminants (standard number 1910.1000). Washington (DC) Occupational Safety and Health Administration, US Department of Labor. 

Air Contaminant Standards A term used by OSHA to describe hazardous materials regulated by spedlic substance standards or exposure tables of 29 CFR 1910, Subpart Z. Permissible Exposure Limit (PEL) The maximum allowed OSHA exposure for workers working 8 hours during a 40-hour week. 

OSHA. 2002b. Limits for air contaminants. Occupational safety and health standards. Occupational Safety and Health Administration. Code of Federal Regulations. 29 CFR 1910.1000. http //www.osha.gov/. 

Occupational Safety and Health Standards for Shipyard Employment—TWA for Air Contaminants soluble insoluble 0.2 mg/m 0.2 mg/m 29 CFR 1915.1000 OSHA 1997b... 

Air Contaminants 29 CFR 1910.1000, Table Z-1, Limits for Air Contaminants 1910.1450, Occupational Exposure to Hazardous Chemicals in Laboratories 29 CFR 1910.1450, App A, National Research Council Recommendations Coneeming Chemical Hygiene in Laboratories (Non-Mandatory) and 29 CFR 1910.1450, App B, References (Non-Mandatory). Laboratory safety is also addressed by NFPA 45, the National Fire Protection Association (NFPA) Standard on Fire Protection for Laboratories, and the International Codes by the International Code Council (ICC). Laceration... 

Note For air contaminants for which OSH A has not determined a dose or permissible exposure limit, other sources of information can provide guidance in establishing acceptable atmospheric conditions. These include Material Safety Data Sheets (MSDSs) that comply with the Hazard Communication Standard (commonly known as HazCom 29 CFR 1910.1200), published information, and internal documents. 

Air purifying respirators must not be worn in atmospheres unknown and/or IDLH, atmospheres in oxygen deficient atmospheres, or in situations where the employer cannot prevent the canister or cartridge from becoming saturated. They also cannot be worn if prohibited by the respirator requirements for substance specific standards (e.g., methylene chloride) or other OSHA standards (e.g., abrasive blasting per 29 CFR 1910.94, Ventilation). Also, respirator manufacturers have lists of contaminants for which air purifying respirators are not recommended. 

Permissible Exposure Limits (PELs) (29 CFR 1910.1000 - Air Contaminants). In 1989, federal OSHA revised its PELs under 1910.1000, which MNOSHA adopted. Although federal OSHA has since reverted to the pre-1989 PELs, MNOSHA still enforces the 1989 PELs for substances that are not covered by separate standards. 

However, in lieu of the current federal occupational safety and health standards codified in 29CFR 1910.1000, the Commissioner of Labor and Workforce Development adopts the standards limiting exposure to air contaminants as contained in subparagraph (b) of Tennessee Department of Labor and Workforce Development Rule 0800-l-l-.07(2). Any reference to 29 CFR 1910.1000 or any part of that standard will be a reference to Rule 0800-l-l-.07(2) (b). 

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