R 408.42809
R 408.42809 Personnel hoisting.
Cite as Mich. Admin. Code R 408.42809
Rule 2809. (1) All the provisions of construction safety standard Part 26. "Steel
Erection" being R 408.42601 to R 408.42655, which is referenced in R 408.42806,
apply to all hoisting.
(2) Riding the headache ball is prohibited except when the work area is
inaccessible or hazardous to reach by other means, a maximum of 2 connectors may ride
the headache ball to and from the workstation with the knowledge and consent of the
employer or the employer's designated representative. The connector or connectors
may be lifted to the workstation only when all of the following conditions exist:
(a) Connectors riding a load line standing platform shall be protected from falling
by a positioning device system or a personal fall arrest system as prescribed in
construction safety standard Part 45. "Fall Protection," R 408.44501 to R 408.44502
which is referenced in R 408.42806.
(b) The connector or connectors and his or her immediate supervisor, who shall
be a competent person, and the operator who will perform the lift shall verbally agree and
certify in writing that using the load line standing platform is the safest alternative.
They shall plan the lift together to minimize the transport distance. A minimum
distance of 20 feet shall be maintained between the load line standing platform and the
top sheave.
(c) A load line standing platform shall be a minimum of 3/8 of an inch thick steel
plate not less than 12 inches nor more than 18 inches in diameter and shall provide
means for slip resistant footing. The platform shall be secured in such a manner to
prevent tipping and shall be placed between the headache ball and the wedge socket.(See
figure 1.) As an alternative, a shackle rated not less than 25 tons may be used.(See figure
2.)
(d) No rigging or load shall be attached to the crane or derrick during the use of a
load line standing platform by the connector or connectors.
(e) The maximum rate of travel for the connector or connectors riding the load
line standing platform shall be 100 feet per minute. Free-spooling and live booms are
prohibited. Controlled load lowering shall be used when the load line standing
platform is used to lower the connector or connectors.
(f) There shall be a communication system between the connector or connectors on a
load line standing platform and the operator of the crane or derrick. The system may be
hand signals or a closed 2-way selective frequency radio system. Hand signals shall
be followed according to appendix A of this part.
(g) An operator of a crane or derrick shall:
(i) Not be authorized to raise or lower the connector or connectors on a load line
standing platform unless the operator is certified by the national commission for the
certification of crane operators or an equivalent crane certification organization.
(ii) Be trained in all of the provisions of R 408.42809(2) before being allowed to
transport the connector or connectors on a load line standing platform.
(h) When a load line standing platform is in use by the connector or
connectors, the operator of a crane or derrick shall maintain the minimum distance
from an energized power transmission or distribution line as required in table 1, as
follows:
VOLTAGE
MINUMUM CLEARANCE
Up to 50 kV
20 feet
Over 50 kV
20 feet + 0.8 inch per kV over 50 kV
(i) The load line of a crane or derrick that is used to raise or lower the connector or
connectors on a load line standing platform shall have a safety factor of 10 for the
anticipated load, and be equipped with a swivel to prevent any rotation of the load
line standing platform. A minimum of 1/2-inch diameter load line shall be used.
(j) Neither the load line standing platform nor the boom shall be lowered below
the point where less than 3 full wraps of the wire rope remain on their respective drums.
(k) A crane or derrick that is used to raise or lower a load line standing platform
shall be set level according to the crane or derrick manufacturer's specifications. The
travel lock shall be engaged on a crane when the load line standing platform is in use.
(l) A crane that is equipped with outriggers shall have the beams and jacks fully
extended to provide maximum stability and the floats shall have a stable bearing
when the load line standing platform is in use by the connector or connectors. A
crawler crane shall have its crawlers fully extended when the load line standing
platform is in use.
(m) Where a crane or derrick will be used to elevate the connector or
connectors on the load line standing platform to an area where there has been no previous
lift of structural members, a trial lift shall be performed and consist of positioning the
load line standing platform to the position it is to be used with an assumed minimum
anticipated load of 1,000 pounds. The operator shall determine that all configurations
necessary to reach the work location will allow the crane or derrick to remain under the
50% limit of the hoisting capacity; that all systems, controls, and safety devices are
activated and functioning properly; and that interferences do not exist. This will be done
at each set-up location of a crane or derrick prior to elevating the connector or
connectors.