Nortel Networks Option 11C Manual De Usuario
Spares planning
Page 189 of 544
Figure 18
Centralized depot service
Centralized depot service
Actual turnaround periods will vary in the field.
Population range: the population range is the quantity of each type of
Meridian 1 switch in the area served by the depot.
Meridian 1 switch in the area served by the depot.
Spare stock size: the spare stock size for a given item depends on the sparing
interval, stock confidence level, failure rate, turnaround time for repair, and
population range.
interval, stock confidence level, failure rate, turnaround time for repair, and
population range.
Calculating spares requirements
The quantity of a replaceable item that is required to stock a depot for one
year can be calculated using a formula:
year can be calculated using a formula:
N x F x T
The spares planning formula has the following components:
N — The number of a spares item in use.
1
2
3
4
5