Permissible Exposure Limits (PELs)

Federal regulations set by the Occupational Safety and Health Administration, U.S. Department of Labor, and found at 29 Code of Federal Regulations 1910.1000 and in the substance specific standards which follow.

API RP 2201, Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries, Fifth Edition, July 2003 (Reaffirmed October 2010), Global Standards

API RP 2009, Safe Welding, Cutting, and Hot Work Practices in the Petroleum and Petrochemical Industries, Seventh Edition, February 2002 (Reaffirmed, March 2012), Global Standards

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