β¨ Gas Reliability Performance Measures
3.3 RELIABILITY PERFORMANCE MEASURES
For the 12 months ended 31 December 2002
Schedule 1 β PART 4
Unplanned Interruptions in Distribution Systems
a) The measure of unplanned interruptions (other than those directly resulting from unplanned interruptions of a transmission system) calculated by the formula a/b where:
a = the sum obtained by adding together the number of customer-hours lost during each interruption; and
b = the total number of customers being supplied by means of the system.
| System | Unplanned interruption measure (within distribution system) |
|---|---|
| Jan 02-Dec 02 | |
| Alfriston | - |
| Ashhurst | # |
| Auckland Central | 0.0024 |
| Bruce McLaren | - |
| Dannevirke | # |
| Drury | # |
| Feilding | # |
| Foxton | # |
| Hastings | # |
| Hunua | - |
| Kakariki | - |
| Kairanga | # |
| Kingseat | - |
| Levin | # |
| Longburn | # |
| Mangaroa | # |
| Mangatainoka | # |
| Oroua Downs | # |
| Pahiatua | # |
| Palmerston North | # |
| Pukekohe | - |
| Ramarama | - |
| Takapau | - |
| Tuakau | - |
| Waiau | - |
| Waiuku | - |
| Wellington | 0.0040 |
On systems where the number of customers affected has been recorded, the duration of each interruption is not recorded and the local engineer has estimated the average length of the interruptions. Data indicated by # has been amalgamated into the Wellington system.
During 2002 Waimauku and Waiuku gates have been removed. Bruce McLaren has been interconnected with other Auckland Central Networks.
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Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 2003, No 54
Gazette.govt.nz —
NZ Gazette 2003, No 54
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Energy Delivery, Efficiency Measures, Load Factor, Gas Systems, Performance Statistics, System Length, Customer Numbers, Reliability Performance Measures, Unplanned Interruptions, Distribution Systems