Harrington Hoists and Cranes MR Trolley - (MR2) - Manual (Page 39)

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 trolley is
maintained in safe working condition.
Table 5-1 Frequent Inspection
All functional operating mechanisms for proper operation, proper adjustment, and unusual sounds.
Trolley braking system for proper operation
Hoist(s) in accordance with ANSI/ASME B30.16
Upper Limit Devices in accordance with ANSI/ASME B30.16
Hook(s) and hook latches in accordance with ANSI/ASME B30.10
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 trolley is maintained in safe working condition.
5.4.2 For inspections where load suspension parts of the trolley are disassembled, a load test per
ANSI/ASME B30.16 must be performed on the trolley after it is re-assembled and prior to its return to
service.
Table 5-2 Periodic Inspection
Requirements of frequent inspection.
Loose or missing bolts, nuts, pins or rivets.
Worn, cracked, or distorted parts such as pins, bearings, wheels, shafts, gears, rollers, yokes, and
bumpers.
Excessive wear of brake system parts
Deterioration of electrical components such as controllers, switches, contacts, pushbuttons.
Proper function of motion limit devices that interrupt power or cause a warning to be activated.
Function, instruction and warning labels for legibility and placement.
5.5 Occasionally Used Trolleys
5.5.1 Trolleys that are used infrequently shall be inspected as follows prior to placing in service:
 Trolley Idle More Than 1 Month, Less Than 1 Year: Inspect per FREQUENT Inspection criteria in
Section 5.3.
 Trolley Idle More Than 1 Year: Inspect per PERIODIC Inspection criteria in Section 5.4
5.6 Inspection Records
5.6.1 Dated inspection reports and records should be maintained at time intervals corresponding to those
that apply for the hoist’s PERIODIC interval per Section 5.2.4. These records should be stored where
they are available to personnel involved with the inspection, maintenance, or operation of the trolley.
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