Which standard provides ANSI guidance on confined spaces?

Which standard provides ANSI guidance on confined spaces?

• A. ANSI Z117.1
• B. AFMAN 91-203
• C. 29 CFR 1910.146
• D. NFPA 70

Answer: (A)

ANSI Z117.1 is the standard that provides guidance specifically for confined spaces. It outlines safety requirements for identifying and evaluating confined spaces, distinguishing permit-required spaces, and establishing entry procedures, atmospheric testing, ventilation, isolation, attendant roles, rescue planning, and training. This focus on practical safety measures and program requirements is what makes it the go-to ANSI reference for confined-space safety. The other items address different areas: the OSHA regulation 29 CFR 1910.146 governs permit-required confined spaces in workplaces but is a federal regulation, not an ANSI standard. AFMAN 91-203 is the Air Force Safety Manual covering broad safety management, not specifically ANSI guidance for confined spaces. NFPA 70 is the National Electrical Code, which deals with electrical installations rather than confined-space safety.

ANSI Z117.1 is the standard that provides guidance specifically for confined spaces. It outlines safety requirements for identifying and evaluating confined spaces, distinguishing permit-required spaces, and establishing entry procedures, atmospheric testing, ventilation, isolation, attendant roles, rescue planning, and training. This focus on practical safety measures and program requirements is what makes it the go-to ANSI reference for confined-space safety.

The other items address different areas: the OSHA regulation 29 CFR 1910.146 governs permit-required confined spaces in workplaces but is a federal regulation, not an ANSI standard. AFMAN 91-203 is the Air Force Safety Manual covering broad safety management, not specifically ANSI guidance for confined spaces. NFPA 70 is the National Electrical Code, which deals with electrical installations rather than confined-space safety.