TTTAAARRRRRRAAALLLEEEAAAHHH PPPOOOWWWEEERRR SSSTTTAAATTTIIIOOONNN CCCooonnnssseeerrrvvvaaatttiiiooonnn MMMaaannnaaagggeeemmmeeennnttt PPPlllaaannn Prepared by Austral Archaeology Pty Ltd (David Parham) & Ian Terry For Hydro Tasmania April 2007 ADDRESS: 23 BAYLEY STREET GLEBE TASMANIA 7000 POSTAL: GPO BOX 495 HOBART TASMANIA 7001 TELEPHONE (03) 6234 6207 FACSIMILE (03) 6234 6207 www.australarchaeology.com.au Certified Quality System to AS/NZS ISO9001:2000 Austral Archaeology Pty Ltd ABN 25 008 174 829 CONTENTS Page 1.0 Introduction ............................................................................................................3 1.1 Background ........................................................................................................3 1.2 Heritage Listings ................................................................................................3 1.3 Objectives ..........................................................................................................3 1.4 Study Area .........................................................................................................3 1.5 Authorship and Acknowledgments.....................................................................3 2.0 Historical Overview ................................................................................................3 2.1 Abbreviations .....................................................................................................3 2.2 General Context .................................................................................................3 2.3 First Stage Development (Generators 1, 2 and 3) .............................................3 2.3.1 Planning & Design..........................................................................................3 2.3.2 Construction Phase ........................................................................................3 2.3.3 Opening..........................................................................................................3 2.4 Second Stage Development (Generators 4 and 5) ............................................3 2.4.1 Planning..........................................................................................................3 2.4.2 Construction and Installation ..........................................................................3 2.5 Third Stage Development (Generator 6)............................................................3 2.5.1 Planning..........................................................................................................3 2.5.2 Construction and Installation ..........................................................................3 2.6 War Time............................................................................................................3 2.7 Operating the Power Station ..............................................................................3 2.7.1 Control Room .................................................................................................3 2.8 Maintenance and Upgrading ..............................................................................3 2.9 Late Twentieth Century Redevelopment............................................................3 3.0 Physical Description...............................................................................................3 3.1 Introduction ........................................................................................................3 3.2 Tarraleah Power Station – External incl Wider System Elements......................3 3.2.1 Forebay ...........................................................................................................3 3.2.2 Hilltop Pipelines...............................................................................................3 3.2.3 Surge Towers..................................................................................................3 3.2.4 Valve House....................................................................................................3 3.2.5 Hillside Penstocks ...........................................................................................3 3.2.6 Haulageway ....................................................................................................3 3.2.7 Switchyard.......................................................................................................3 3.2.8 Power Station..................................................................................................3 3.3 Power Station—Internal Spaces & Elements.....................................................3 3.3.1 Second Floor ..................................................................................................3 3.3.1.1 Entrance Vestibule – S1...............................................................................3 3.3.1.2 Second Floor Passage – S2 ........................................................................3 3.3.1.3 Tarraleah Team Leader’s Office - S3...........................................................3 3.3.1.4 Shared Office – S4.......................................................................................3 3.3.1.5 Communications Room – S5 .......................................................................3 3.3.1.6 Men’s and Women’s Toilets - S6 & 7 ...........................................................3 3.3.1.7 Staff Room – S8...........................................................................................3 3.3.1.8 Control Room Vestibule – S9.......................................................................3 3.3.1.9 Communications Room – S10 .....................................................................3 3.3.1.10 Control Room – S11...................................................................................3 3.3.1.11 Auxiliary Switchboard Room – S12............................................................3 3.3.1.12 Southern Stairwell – S13............................................................................3 Tarraleah Power Station Conservation Management Plan April 2007 Austral Archaeology Pty Ltd 2 3.3.1.13 Maintenance Space for Stained Glass Windows – S14.............................3 3.3.2 First Floor ........................................................................................................3 3.3.2.1 Computer/Planning Room – S15 .................................................................3 3.3.2.2 First Floor Passage – S16............................................................................3 3.3.2.3 Terminal Room and Control Cable Duct – S17............................................3 3.3.2.4 Storeroom (former Battery Room) – S18 .....................................................3 3.3.2.5 Motor Generator Sets Room – S19..............................................................3 3.3.2.6 Supervisory and Charger Room – S20 ........................................................3 3.3.2.7 Central Stairwell – S21.................................................................................3 3.3.2.8 Battery Room – S22.....................................................................................3 3.3.2.9 Transformer Cubicle Room - 23...................................................................3 3.3.2.10 Store Room – S24......................................................................................3 3.3.2.11 Northern Stairwell to Machine Room – S25 ...............................................3 3.3.3 Ground Floor ...................................................................................................3 3.3.3.1 Store Room – S26........................................................................................3 3.3.3.2 Circuit Breaker Room – S27 ........................................................................3 3.3.3.3 Auxiliary Generator Switchgear Room – S28...............................................3 3.3.3.4 Cable Tunnel – S29 .....................................................................................3 3.3.3.5 Store – S30 ..................................................................................................3 3.3.3.6 Machine Room – S31...................................................................................3 4.0 Cultural Significance ..............................................................................................3 4.1 Introduction to the Significance Assessment Process........................................3 4.2 Basis for Assessment.........................................................................................3 5.0 Conservation Policy ...............................................................................................3 5.1 General Conservation Policies...........................................................................3 5.2 Ongoing Use Policies.........................................................................................3 5.3 Buildings and Structures Policies.......................................................................3 5.3.1 Interior .............................................................................................................3 5.3.2 Power Station Exterior & River/Road Side Retaining Walls Policies...............3 5.4 Machinery and Components Policies.................................................................3 5.5 External Infrastructure Policies ..........................................................................3 5.6 Landscaping Policy ............................................................................................3