51.7(2)A firefighter entering a confined space for the purposes of rescue shall wear a body harness that meets or exceeds NFPA 1983, “Standard on Fire Service Life Safety Rope and System Components”, 1995 edition and self-contained respiratory protective equipment that meets or exceeds NFPA 1981, “Standard on Open-Circuit Self-Contained Breathing Apparatus for Fire Fighters”, 1992 edition.