| Tweet |
Custom Search
|
|
|
||
 TB 55-1900-201-45/1
e. The proof load applied to cranes and hoists shall be lifted, topped and swung (slewed) as far as possible in
each direction. If the boom of the crane has a movable radius, it shall be tested with a proof load as set forth in Table 2-
4, at the maximum radii of the boom. In the case of hydraulic cranes whose capacity is limited by pressure, and which it
is not possible to lift a load 25% in excess of the safe working load, the greatest possible load in excess of the safe
working load shall be used. After satisfactory completion of the proof testing of the cargo gear, it should be disassem-
bled after the test as necessary to determine its suitability for continued service. (Reference paragraph 32a).
f. On all types of winches and cranes, efficient means shall be provided to stop and hold the proof load in any
position, and the efficiency of such means shall be demonstrated.
(1) When electric winches and electric hydraulic winches are fitted with electromagnetic or hydraulic brakes
at the winch, the winches should be so equipped that a failure of the electric power shall stop the motion and set the
brakes without any action on the part of the operator.
2-39. Marking of Booms and Cranes. The safe working load for the assembled gear shall be marked in accordance
with MIL-M-11745B. The markings shall be located on the heel of each boom with a minimum angle.
2-40.
a. Chains, hooks, rings, links, shackles and swivels of wrought iron used as cargo gear should be annealed at
the following intervals.
(1) Wrought iron chains and gear in general use, one-half inch or less, at least once in every six months.
(2) All other wrought iron chains and gear, including topping lift chains, in general use, at least once in every
twelve months.
2-41.
Modifications, Renewals, or Repairs of Cargo Gear.
a. No modifications, major repairs, or renewals affecting the safety of the vessel with regard to cargo gear will
be made without the knowledge of the US Army Troop Support and Aviation Materiel Readiness Command, ATTN:
DRSTS-MMM, 4300 Goodfellow Blvd., St. Louis, MO 63120.
b. Test and examinations of the modifications, major repairs or renewals shall be in accordance with paragraph
1a.
SECTION XI. Miscellaneous Survey Inspections
2-42.
Watertight Integrity.
a. All watertight doors shall be operated locally by manual power and also by hydraulic or electric power if so
equipped. Where
2-24
|
||
|
||
