Bush Skitek Technical Officer

Draft State Transmission Code- screening and prudent avoidance

Co-use Guidelines document

explains philosophies applied in co-use application assessment

posted on Powerlink websitewww.powerlink.com.au

Network» Property & Easements

» Co-Use requests

Resources are available

What we consider

Public safety statutory clearances

Network operational integrity do we have operational access 24/7 to all structures? Is there a fire hazard?

Future network expansion consideration is given to plans to expand, upgrade, and augment the network, eg space for additional structures especially on angles

Reconfiguration of lots to accommodate Powerlink easements

Construction phase of the proposal maintenance of exclusion zones Safety Regulations Schedule 2

Terms and definitions

Conductor Shadow Area (CSA)

Blow out conductor condition

Every day condition and Maximum Sag Design

20m access around structures

Powerlink structure references XXXX-STR-XXXX

Annexure A list of other issues to consider

Conductor Shadow Area

Still no wind condition

100Pa wind

250Pa wind

350Pa wind

500Pa wind max design

500Pa wind max design

The surveyed conductor height will NOT be at its lowest conductor position 99.9%

Everyday Temp. (EDT) and Max Design Temp.

20m access around structures

Typical plant set up for maintenance work

Recognising Powerlink structures

Recognising Powerlink structures

Electrical Safety Regulations 2002

Schedule 2 operating plant by untrained person exclusion zones

Plant, eg crane in operating modeVehicle, eg crane in travelling configuration

Schedule 4 statutory clearances

Need to comply under all operating conditions

Lot reconfiguration

Rearranged the boundary to follow the easement

One unencumbered lot Lot 7

Approximate area of the lots stayed the same

Permitted, conditional and prohibited activities

Permittedeveryday activities which can be safely carried out on the Easement e.g. walking, gardening, driving, parking

Conditional

Subject to detailed Powerlink investigation and written consent some prohibited activities may be carried out provided that conditions are met

Prohibited

In line of Powerlink s prudent avoidance policy, no dwellings or substantial structures will be allowed on the easement

Permitted activities - Walking, driving, parking

Conditional activities

Trees planted in the CSA +5m

More detailed investigations incur costs

Prohibited

Unauthorised dumping of soil within the easement area

Prohibited

Unauthorised bikeway restricting access to structures

Summary

There are three (3) levels of review:

- Co use request for permitted activities

- Technical review for conditional activities

- Detailed engineering investigation for conditional activities