For emergency response in an unknown or potentially IDLH atmosphere, what is the minimum number of people required?
At a minimum, four (4) people are required: two working as a team inside the unknown or potentially IDLH atmosphere, and two working outside this atmosphere for assistance or rescue. Reference Interpretation and Compliance Letters: • The interpretation of the OSHA standards 1910.134 and 1910.156 which address the requirements for workers who are actively conducting operations in atmospheres that are IDLH. [11/01/95] (See the Attached 5/1/95 Memo from James W. Stanley.) • See Also: OSHA Instruction CPL 2-2.59A, Inspection Procedures for the Hazardous Waste Operations and Emergency Response Standard, 29 CFR 1910.120 and 1926.65, Paragraph (q): Emergency Response to Hazardous Substance Releases, Appendix A, Paragraph IV.A. and Appendix C, Paragraph II.E.-F. [04/24/98] Can refresher training be given in segments? Refresher training may be given in segments so long as the required 8 hours have been completed by the employee’s anniversary date. Reference Interpretation and Compliance Letters
