Electricity Asset Management Plan 2019-2029
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Vector Limited://
Figure 4-26 Age Profile for Distribution Ground Mounted Switchgear Northern
Condition and Health The distribution switchgear population is ageing and while our maintenance regime is succeeding in keeping the fleet operational it does not remove the risks posed by the ageing fleet in terms of arc flash capability and ageing internal components that are not replaceable (i.e. spares are simply not available), nor will our maintenance regime extend the asset life indefinitely. We have thus embarked on a replacement strategy as expanded below under the Strategy heading and in our Asset Strategy document, EEA500 Asset Strategy Distribution Systems. Our CBARM model to inform our intervention plan for ground mounted switchgear is fully developed and the first graph below, taken from our CBARM model for distribution ground mounted switchgear, shows the asset health in year “0”, i.e. the current year. The second graph shows the health index of ground mounted switchgear if no intervention is undertaken in the AMP 10 year period.
Figure 4-27 Asset Health at Year 0 - Distribution Ground Mounted Switchgear
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