ConfinedSpaces.ppt

ConfinedSpaces Standard Permit-Required Confined Spaces 29 CFR 1910.146 Confined Space Confined space is space that: Is large enough so configured that employee can bodily enter perform assigned work Has limited or restricted means for entry or exit (i.e. tanks, vessels, silos, pits, vaults or hoppers) Is not designed for continuous employee occupancy Permit-RequiredConfined Space Permit-Required Confined Space is confined space that has one or more of following characteristics: Contains or has potential to contain hazardous atmosphere Contains material that has potential for engulfing entrant Permit-RequiredConfined Space Has internal configuration such that entrant could be trapped or asphyxiated by inwardly converging walls or by floor which slopes downward tapers to smaller cross-section Contains any other serious safety or health hazard Examples Characteristics Internal configuration Open - no obstacles, barriers or obstructions within space (i.e. water tank) Obstructed - permit space contains some type of obstruction that rescuer would need to maneuver around, such as baffle or mixing blade Large equipment, such as ladder or scaffold brought into space for work purposes, would be considered obstruction if positioning or size of equipment would make rescue more difficult Characteristics Elevation Elevated - permit space where entrance portal or opening is above grade ≥ 4 ft Usually requires knowledge of high angle rescue procedures because of difficulty in packaging transporting patient to ground from portal Non-elevated - permit space with entrance portal located ≤ 4 ft above grade Will allow rescue team to transport injured employee normally Characteristics Portal size Restricted - portal ≤ 24” in least dimension Too small to allow rescuer to simply enter space while using SCBA Too small to allow normal spinal immobilization of injured employee Unrestricted - portal ≥ 24” in least dimension These portals allow relatively free movement into and out of p