Michigan Administrative Code › Department - Labor and Economic Opportunity › MIOSHA › General Industry and Construction Safety and Occupational Health Standards › General Industry Safety Standards › Part 5 - POWERED PLATFORMS FOR BUILDING MAINTENANCE › WIRE, FIBER AND SYNTHETIC ROPE › Section R. 408.10575b - Two- and 4-point suspended working platforms

Current through Vol. 24-12, July 15, 2024
Rule 575b.
(1)
						The 2- and 4-point suspended working platform shall be not less than 24 inches
						(610 mm) wide and shall be provided with a minimum of a 12-inch (305 mm) wide
						passage at or past any obstruction on the platform.
(2) The flooring of the 2- and 4-point
						suspended working platform shall be of a slip-resistant type and shall not have
						an opening that would allow the passage of lifelines, cables, and other
						potential falling objects.
(3) The
						2- and 4-point suspended working platform shall be provided with a means of
						suspension that will restrict the platform from tilting more than 15 degrees in
						any direction.
(4) Any cable that
						is suspended from above the 2- and 4-point suspended working platform shall be
						provided with a means for storage to prevent accumulation of the cable on the
						floor of the platform.
(5) All
						operating controls for the vertical travel of the 2- and 4-point suspended
						working platform shall be of the continuous-pressure type and shall be located
						on the platform.
(6) Each operating
						station of every 2- and 4-point suspended working platform shall be provided
						with a means of interrupting the power supply to all hoist motors to stop any
						further powered ascent or descent of the platform.
(7) The maximum rated speed of the 2- and
						4-point suspended working platform shall not be more than 50 feet per minute
						(0.3 ms) for single-speed hoists and not more than 75 feet per minute (0.4 ms)
						for multispeed hoists.
(8) All
						tools, water tanks, and other accessories shall be secured to prevent their
						movement or accumulation on the floor of the 2- and 4-point suspended working
						platform.
(9) Portable fire
						extinguishers that are in compliance with the provisions of General Industry
						Safety Standard Part 8 "Portable Fire Extinguishers," as referenced in
						R
						408.10509, shall be provided and securely attached on
						all 2- and 4-point suspended working platforms.
(10) Access to and egress from a 2- and
						4-point suspended working platform, except for those that land directly on a
						safe surface, shall be provided by stairs, ladders, platforms, and runways that
						are in compliance with the provisions of General Industry Safety and Health
						Standard Part 2 "Walking-Working Surfaces," as referenced in
						R
						408.10509. Access gates shall be self-closing and
						self-latching.
(11) Means of access
						to or egress from a working platform that is 48 inches (1.2 m) or more above a
						safe surface shall be provided with a guardrail system or ladder-handrails that
						are in compliance with the provisions of General Industry Safety and Health
						Standard Part 2 "Walking-Working Surfaces," as referenced in
						R
						408.10509.
(12) The 2- and 4-point suspended working
						platform shall be provided with a secondary wire rope suspension system if the
						platform has overhead structures that restrict the emergency egress of
						employees. A horizontal lifeline or a direct connection anchorage shall be
						provided as part of a personal fall arrest system. The system shall be in
						compliance for each employee on such a platform with the requirements of
						General Industry Safety and Health Standard Part 33 "Personal Protective
						Equipment" as referenced in
						R
						408.10509.
(13) A vertical lifeline shall be provided as
						part of a personal fall arrest system. The system shall be in compliance with
						the requirements of General Industry Safety and Health Standard Part 33
						"Personal Protective Equipment," as referenced in
						R
						408.10509, for each employee on a working platform
						that is suspended by 2 or more wire ropes, if the failure of 1 wire rope or
						suspension attachment will cause the platform to upset. If a secondary wire
						rope suspension is used, vertical lifelines are not required for the personal
						fall arrest system, provided that each employee is attached to a horizontal
						lifeline anchored to the platform.