Harrington Hoists and Cranes (G)NTH Trolley - Manual (Page 21)

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5.3 Frequent Inspection
5.3.1 Inspections should be made on a FREQUENT basis in accordance with Table 5- 1, “Frequent
Inspection.” Included in these FREQUENT Inspections are observations made during operation for
any defects or damage that might appear between Periodic Inspections. Evaluation and resolution of
the results of FREQUENT Inspections shall be made by a designated person such that the hoist is
maintained in safe working condition.
Table 5-1 Frequent Inspection
All functional operating mechanisms for proper operation and adjustment, maladjustment and
unusual sounds.
Hoist braking system for proper operation
Hooks and latches in accordance with ANSI/ASME B30.10
Hook latch operation
Load chain in accordance with Section 5.7
Load chain reeving for compliance with Section 3.1 and 6.4
Hoist support for damage
Connection points between Hoist and Trolley in accordance with ANSI/ASME B30.16
5.4 Periodic Inspection
5.4.1 Inspections should be made on a PERIODIC basis in accordance with Table 5- 2, “Periodic Inspection.”
Evaluation and resolution of the results of PERIODIC Inspections shall be made by a designated
person such that the hoist is maintained in safe working condition.
5.4.2 For inspections where load suspension parts of the hoist are disassembled, a load test per ANSI/ASME
B30.16 must be performed on the hoist after it is re-assembled and prior to its return to service.
Table 5-2 Periodic Inspection
Requirements of frequent inspection.
Evidence of loose bolts, nuts, pins, or rivets.
Evidence of worn, corroded, cracked, or distorted parts such as load blocks, suspension housing,
chain attachments, clevises, yokes, suspension bolts, shafts, gears, bearings, pins, rollers, locking
and clamping devices, wheels, and bumpers.
Evidence of damage to hook retaining nuts or collars and pins, and welds or rivets used to secure
the retaining members.
Evidence of damage or excessive wear of load and idler sheaves.
Evidence of worn, glazed or oil contaminated friction disks; worn pawls, cams or ratchet; corroded,
stretched, or broken pawl springs in brake mechanism.
Evidence of damage to supporting structure.
Function label on hoist for legibility.
Warning label properly attached to the hoist and legible (see Section 1.2).
End connection of load chain.