BHP : Annual Network Safety Performance Objectives 2021

BHPIO - Mount Newman Supply

Authority

Electricity (Network Safety) Regulations 2015

Annual Network Safety Performance Objectives:

2021

Executive Summary

Mount Newman Supply Authority annual network safety performance objectives for current financial year and the next three financial years:

Regulation 30 - Network safety performance incident	2021/22	2022/23	2023/24	2024/25
(a)	Total Electric Shock		0	0	0	0
	i) Electric Shock - No Injury		0	0	0	0
	ii) Electric Shock - Injury		0	0	0	0
	iii) Electric Shock - Death		0	0	0	0
	iv) Livestock - Death		0	0	0	0
(b)	Property Damage (Not Fire)		0	0	0	0
(c)	Property Damage (Fire)		0	0	0	0
(d)	Pole fire	T1	0	0	0	0
		D	0	0	0	0
(e)	Conductor clashing	T	0	0	0	0
		D	0	0	0	0
(f)	Unassisted pole failures2	T1	0	0	0	0
		D	0	0	0	0
(g)	Unassisted overhead conductor failures	T	0	0	0	0
		D	0	0	0	0
(h)	Unassisted stay wire failures	T	0	0	0	0
		D	0	0	0	0
(i)	Unassisted underground cable failure	T	0	0	0	0
		D	0	0	0	0

Table 1: Network Safety Performance Objectives for current financial year and the next three

financial years

1. All steel poles for the Transmission and Distribution system.
2. Refer to section 3.6 on pole types and failure rates.

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Contents Page

1.	Purpose ...................................................................................................................	4
2.	Definitions ................................................................................................................	4
	Mount Newman Supply Authority .............................................................................	4
	Mount Newman Supply Authority Network ...............................................................	4
3.	Network Safety Performance Incidents ....................................................................	6
	Electric shock, injury or death ..................................................................................	6
	Property damage (non-fire) ......................................................................................	6
	Property damage (fire) .............................................................................................	6
	Pole fire ...................................................................................................................	6
	Conductor clashing ..................................................................................................	7
	Unassisted pole failure.............................................................................................	7
	Unassisted overhead conductor failure ....................................................................	7
	Unassisted stay failure .............................................................................................	7
	Unassisted cable failure ...........................................................................................	8

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Overview

1. Purpose

This report details the network safety performance objectives for the Mount Newman Supply Authority with respect to the requirements of the Electricity (Network Safety) Regulations 2015, the report is to be published on the BHP website on or before each 30th of November and is compiled to meet the requirements of Regulation 31.

2. Definitions

Mount Newman Supply Authority

For the purpose of this report, Mount Newman Supply Authority refers to the collective Network Operator listed in Regulation 4(1) (f), 4(1) (g) and 4(3).

Mount Newman Supply Authority Network

The Mount Newman Supply Authority, own, operate and maintain the generation, transmission and distribution electricity network within the Pilbara region which supplies power to its Iron Ore operations and to the Newman Township, associated bore fields, Newman Airport and Capricorn Roadhouse.

			132/33kV Yandi		132/33kV		66/11kV SM
		33kV	132kV	Junction		11kV
		Substation		Substation
MAC Power				Substation
Station
	Yandi Mine
	and Camps			132kV			66kV		Whaleback
							6.6kV		Mine
	132/33kV MAC		132kV CPT				66/6.6kV HUB	Whaleback
33kV	132kV				Hub
Substation	Switchyard				Substation
MAC & South									11kV
Flank Mine and
Camps		132kV
						66kV
							11kV MWB
								Switchroom
			Alinta Powerstation						11kV
			(Owned by Others)
11kV	11/132kV NCC		132kV		132/66kV NP	66kV	66/11kV MWB
Substation			Substation	Switchyard
									11kV
Yarnima Power
Station							66kV
	132kV		Warrawandu			66kV	66/11kV South
		Village				Town Substation
						11kV
						OB24
	132/66/33kV							Newman
33kV	Jimblebar Mine		33kV					Town
	Substation
				11kV
Jimblebar		66/33kV JVS		66/11kV KNJ	66kV	66/11kV Town	11kV
66kV	Substation		Substation	Substation
Mine
				66kV					OB25 &
									Borefields
	66/11/33kV						11kV
				66/11kV HSC
33kV	Shovelanna	11kV
		Substation
	Substation
			OB18				6.6kV	11kV	33kV
							66kV	132kV	Disconnected
							(Future Connection)

Figure 1: Mount Newman Supply Authority, Transmission and Distribution networks (Block)

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NEWMAN HV NETWORK

Figure 2: Mount Newman Supply Authority, Transmission and Distribution networks (topographic)

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