S A F E T Y M A N U A L
M S I C R A N E S C A L E
13
M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
S A F E T Y M A N U A L
M S I C R A N E S C A L E
Field Inspection and Repair
• Examine crane scale hook for excessive wear. A scale
hook showing a wear-reduction greater than a
5%
value
should be removed from service.
• Examine crane scale hook for nicks and gouges.
• Examine crane scale hook periodically by magnetic
particle and/or dye penetrant test methods, or more often
in severe operating conditions. Hooks found to contain
cracks should be removed from service.
• Never repair, alter, rework, or reshape any load bearing
component by welding, heating, burning or bending.
Recommended Preventive Maintenance
Initial Inspection
Prior to use, all crane scale hook and shackle or lifting eyes
should be inspected
.
Frequent and Periodic Inspection
Inspection procedures and record keeping requirements for
crane scale hook shackle and lifting eyes in regular service
shall be governed by the type of equipment with which they
are used.
Operator Inspection
Visual examination by the operator or other designated
person; records not required.
Normal
Monthly
Heavy
Weekly
Designated Person Inspection / Manufacturer
Visual inspections by a designated person making records of
apparent external conditions to provide the basis for continu-
ing evaluation.
Normal
Annual
Heavy
Semiannual
Severe
Quarterly
Calibration
Normal
Annual
Heavy
Semiannual
