Effects of aging infrastructure, contingency planning and preparedness for unusual

events.

11th WA Power 7 Gas Conference

Perth, 2017

Introduction

• Costs of Power Outages• Literature Review

• South Australia Experience

• Contingency Planning• What is in it

• Limitations

• Stress testing

• Planned vs unplanned events• Hazlewood Tx Failure

• Mining Operation 33kV Tx Failure

• Downer Utilities Vic

Cost of Power Outages

Literature Review:

Researchers grappling with issue

using various research methods

and modelling approaches

Articles as far back as the 1960s

Literature Review

Costs can be direct or indirect

Varies from domestic to C&I

Varies across industry classification

NO AGREEMENT;

• Quantitative methods

• What the true cost is

Literature Review - tables

Literature Review Conclusions:

• “We’ve committed a team of local and international experts, working around the clock for the past month –through holidays and extended hours – both on site in Tasmania and at our technical head support office preparing equipment,” said Aggreko Managing Director George Whyte.

Costs vary by type of consumer

Cost is not your cost of electricity nor

the cost of generation

Know the history

Attention of SA is giving us more

insight$

Contingency Plans

Designed to minimise outage time

Provides clear and accurate communications and requirements

Provide the customer with power or temperature control equipment

in the event of : Unplanned outages, planned outages, breakdowns

Formalises site requirements

What else?

What Else

• Fleet Availability/ability to supply

• Weather

• Stakeholders

• Logistics

Weather

Logistics

• Tanami mine closed for

second time due to no

deliveries for 57 days

• 150 containers shipped to

Tasmania

• Supply Chain

• Can you get night deliveries

Stakeholders

• Approvals

• What do the neighbours think

• Political expectations

• Media

Stress Test your Plan

• Wonthaggi Desalination Plant

• Cost of not doing this is missing

water and security payments

• On-site in case repairs take longer

than expected to 220kV GIS

• Undertake a lessons learnt

From this to this

Aged Infrastructure

• A couple of transformer failures

• Cost – a few weeks of reduced

production for a miner

• Black Start Failure for a power

station

Planned Outages

• United Energy aerial bundled cable

replacement program where Aggreko is

working with Downer and Zinfra to

provide generator power so that there is

minimal interruption to the power supply

while this cable is being replaced

In Summary

• Know your costs of an outage

• Direct

• Indirect

• Reputational

• Have a plan

• Engage early with suppliers (not just

technical consultants)

• Plan

• Test

• Refine

• Planned Outages

• Cost savings through collaborative

approaches

Thank you!