Electricity Asset Management Plan 2019-2029
206
Vector Limited://
Zealand Transport Authority regulations for rail safety. Furthermore, the tunnel is classed as a confined space that requires strict entry requirements and these specified auxiliary systems to be operational 24/7.
For an auxiliary system failure there is a health and safety risk, which could result in the Asset Safety Incident Rate being increased (see Section 2.3.2). To ensure the integrity and safe operation of personnel and plant within this strategic asset there is a need to replace and refurbish auxiliary systems inclusive of the rail and its anchor systems.
TARGETED OUTCOMES
CUSTOMER EXPERIENCE
SAFETY
RELIABILITY
RESILIENCE
OPERATIONAL EFFICIENCY
CYBER SECURITY AND PRIVACY
OPTIONS CONSIDERED Options to address the need identified above have been assessed and are summarised in the following table.
DESCRIPTION
DISCUSSION OF OPTION
ESTIMATED COST (NPV IF APPLICABLE)
STATUS
Option 1: Do nothing
Not undertaking replacement or refurbishment works will result in continued and escalating maintenance costs and the risk that plant will be operated to failure. This runs the risk that that the tunnel cannot be safely operated and entered for regular maintenance or emergencies. Failure of auxiliary systems poses a risk to the continued operation of Vector and Transpower primary plant required for supply to Auckland CBD, North Auckland and Northern customers. Do nothing implies a Health and Safety risk to personnel and contravention of the New Zealand Transport Authority statutory Rail Act and risk of loss of reputation with Transpower, Electricity Commission, New Zealand Government and Auckland City Council. Selecting this option will remove the risks associated with the ‘Do nothing’ option. Undertaking a staged and scheduled programme of works will ensure continued operation and maintenance of the primary plant in the tunnel. It will also correctly manage the Health and Safety risks to personnel that work in the tunnel
Rejected
Option 2: Undertake a staged and scheduled programme of works to replace and refurbish auxiliary systems in the tunnel
$3.56M Selected
Made with FlippingBook - professional solution for displaying marketing and sales documents online