Cal. Code Regs. Tit. 8, § 1667 - Suspended, Power-Driven Scaffolds
NOTE: For additional details relating to exterior building maintenance and window cleaning operations see Articles 5 and 6 of the General Industry Safety Orders.
(a)
Powered scaffold platforms, not required to be completely railed, such as those
supported by 2 or more hoisting units, shall at least have a protective
railing, or equivalent, on all open sides and ends. The railing shall be not
less than 36 inches nor more than 42 inches high, and it shall be capable of
supporting a 200-pound concentrated load without permanent
deflection.
(b) Loading. The total
load on any 1 power unit shall not exceed the rated working capacity. If a unit
is to support 500 pounds or more, special attention shall be given in advance
to eliminate the possibility that the staging, hooks, shackles, parapet walls,
and other load-carrying items will be overstressed. The total allowable load on
stage ladders of the type described in Section
1660(f) shall not
exceed 425 pounds.
(c) Wire Rope.
Powered scaffolds shall be supported by wire rope providing a safety factor of
6 or more. It shall be 6 by 19 or 6 by 37 hemp center construction or better,
not less than
5/16 inch in
diameter, or with a breaking strength of not less than 6,000 pounds.
(d) Platforms shall not be less than 20
inches wide and shall be provided with a guardrail as specified in Section
1658(o). Platforms
shall be designed to support the loads to be imposed without exceeding
allowable working stresses established by recognized engineering
practice.
(e) Safety Devices for
Electric-Powered Unit.
(1) Wiring. All wiring
including supply cords shall conform to the Electrical Safety Orders.
(2) Electrical Devices. All electrical
devices, such as control switches, shall conform to the Electrical Safety
Orders.
(3) Load Release. A
hand-operated release mechanism to allow unit to descend faster than normal
speed is prohibited.
(f)
Safety Devices for Air-Powered Unit.
(1)
Control Valve. Control valve shall be a nonlocking dead-man-control type. A
shutoff valve shall be installed ahead of the control valve for the purpose of
shutting off air when employees leave the stage.
(2) Load Release. A hand-operated release
mechanism to allow unit to descend faster than normal speed is
prohibited.
Notes
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
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