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Nemag | User Manual | Quick Release Link EN | Revision 1.3
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6.6 Inspection interval and lifetime indication
CAUTION
The data in the tables below are indicative lifetimes, based on our experience and general applications. High dynamic
forces in the application decreases the lifetime significantly. You must assess the application to determine the required
inspection interval and lifetime. At new applications, additional inspection intervals must be applied in order to determine
the lifetime for that application. The number of load cycles per grab cycle is affected by the average amount of trimming
works and the crane system.
Refer to section 6.3 for the methods of inspection.
Refer to chapter 7 for the criteria of rejection.
Criterion: Number of cycles at Safe
Work Load (SWL)
Grab operation General purpose and container operation
60 cycles / hour
1,6 load cycle during one grab cycle.
60 cycles / hour
1 load cycle during one operation cycle.
Inspection after 125,000 cycles at SWL 125,000 cycles at SWL
Do not use after 250,000 cycles at SWL 250,000 cycles at SWL
Criterion: Hours of operation Grab operation General purpose and container operation
Inspection after 1300 hours of operation 2000 hours of operation
Do not use after 2600 hours of operation 4000 hours of operation
Criterion: Shifts of operation Grab operation General purpose and container operation
24 hours per day operation Inspection after 8 weeks
Do not use after 16 weeks
Inspection after 12 weeks
Do not use after 24 weeks
16 hours per day operation Inspection after 12 weeks
Do not use after 24 weeks
Inspection after 18 weeks
Do not use after 36 weeks
8 hours per day operation Inspection after 24 weeks
Do not use after 48 weeks
Inspection after 36 weeks
Do not use after 72 weeks