Amendment to the Commerce Act




1012 NEW ZEALAND GAZETTE, No. 35 29 MARCH 2010

Indicator Description Guidance / Instruction
Interruption Start Time The interruption start time is the earlier of the date and time at which: the CIV is closed by Powerco; plant is isolated by Powerco; or the time and date initially logged by the call centre following calls received to the Emergency Services number in respect of multiple losses of supply arising from a single cause; or Powerco is advised of loss of supply by a retailer or customer.
Leaks Detected by Routine Survey Number of leaks detected on system by routine network survey. Calculated as [Number of leaks detected on distributor’s network by routine network survey / total length pipeline in kms x 1000]. Measurement of leaks will be limited against assets for which Powerco is responsible. Includes DRSs, valves, Powerco GMSs etc. Excludes outlet pipe. Routine surveys include those conducted by third parties contracted by Powerco to conduct these on Powerco’s behalf.
Leak Survey A planned or scheduled maintenance activity where the gas pipelines are surveyed to detect any possible leaks.
Loss of Gas Supply Is where gas in the distribution network is not sufficient at the CIV to supply a customer’s appliances and/or gas equipment.
Mains Mains are the network of pipes that transport gas from the bulk supply transmission system to the service.
Outage Event Any unplanned interruption that affects more than five customers. This is interpreted to mean any unplanned event that causes more than five customers to have their gas supply interrupted. Powerco must record the following details for each event: Date, regional network name, number of connections affected, average duration, whether caused by third party interference damage.
Planned Interruptions Any interruptions that have been planned by Powerco and notified to the customer or its retailer. Planned interruptions occur when a distributor needs to disconnect supply either for its own reasons (ie, to undertake maintenance or construction work) or on the initiative of another party (ie customer, local council, other utilities providers) and when the distributor is able to give 10 business days’ notice to either the customer or its retailer or arrange the interruption with the customer or its retailer. Powerco must give customers or their retailers at least 10 business days’ notice for all planned interruptions unless otherwise arranged with the customer or its retailer.
Poor Pressure Events Number of confirmed unplanned incidents where delivery pressure drops below target levels within a pressure system. Incidents caused by low gate station pressure, and third party damage events to the network should be excluded. Number of “confirmed unplanned network incidents” that have caused the customer to complain about poor supply pressure. A confirmed network incident is a result of poor supply pressure and is upstream of the CIV. Excludes incidents caused by transmission system fault and third party damage events to the network. Note that where poor supply pressure results in an interruption, it will not be recorded as a poor pressure event.


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Online Sources for this page:

Gazette.govt.nz PDF NZ Gazette 2010, No 35





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🏭 Amendment to the Commerce Act (Powerco Natural Gas Services) Authorisation 2008 (continued from previous page)

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Commerce Act, Authorisation, Powerco, Natural Gas, Amendment, Commerce Commission