Asset Lifecycle Plan
The asset lifecycle plan includes
routine and preventative
maintenance and asset renewals
and refurbishment. Key drivers for
lifecycle planning include:
Risk Management
Risk management is a critical
component of asset management,
as demonstrated by the inclusion of
specific risk management objectives
in our service level targets. Risk
management is central to effective
asset stewardship and is particularly
significant for the management
of long lived assets which provide
essential services.
• Consequences and probability
of failure (including safety,
reliability and environmental
consequences).
MainPower maintains excellent
data about the quantity, condition
and performance of its assets.
This is compiled from historical
construction records, asset
inspections, testing and field
work. Asset failures and recurring
fault causes are investigated and
measures to eliminate or mitigate
the problems are built into the
maintenance plan. This information
and the associated inspection and
testing processes provide the basis
for the maintenance and renewals
plan.
• Interrelationship between lifecycle
plans and network development
plans.
The key focus areas for our lifecycle
plan over the planning period
include:
• Protection and continuity of
electricity supply;
Maintenance across the network
is now primarily condition based
whereby individual components are
maintained until their condition and
serviceability has deteriorated to the
point that it creates an unacceptably
high risk of failure, which triggers
renewal. Maintenance activities
include:
• Addressing the ongoing risk
of pole failure, in particular to
ensure we meet our health and
safety objectives for our staff,
contractors and the public with
access to our network.
• Optimising lifecycle costs
(operation, maintenance, renewal,
replacement and disposal).
• Assessment of an asset’s
expected performance.
• Condition based maintenance;
• Time based preventative
maintenance;
• Reactive maintenance or repair on
breakdown.
Renewals are typically triggered
where assets have deteriorated to
an unsafe condition, or where it
is economically and operationally
efficient as adjacent assets are
being replaced. In practice most
replacements on our network are
determined by:
• Reliability based maintenance;
• Managing overhead switchgear
performance, maintenance and
replacement to help ensure our
reliability and safety targets are
met.
• Improving the safety and
reliability of our ground mounted
kiosk switchgear.
• Improving network resilience
through targeted network
component replacements.
• Incorporating new technologies
into our replacement program,
consistent with our smart grid
philosophy.
• Reduce the impact of tree related
faults on our network.
• Natural upgrades of assets due to
growth;
• Changes in fault levels;
• Additional intelligence or
performance requirements at
selected locations.
MainPower maintains excellent
data about the quantity,
condition and performance of
its assets.
The objectives of ri