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JOHNSTAFF

Attachment F

Site Infrastructure AssessmentThe Ultimo Presence Project

Engineering services enable architecture. Mechanical Engineering Copenhagen Level 8, 9 Castlereagh StreetSean Mulcahy Lighting Design London Sydney, NSW, 2000, Australia

Sustainable Design Sydney ABN 50 001 189 037Electrical Engineering Hong Kong t : +61 / 02 9967 2200

New York e : info©steensenvarming.com

BUILDING SERVICES STEENSEN VARMING

MAAS Powerhouse, UltimoBuilding Services Masterplan Assessment



New York e: [email protected]

STEENSEN VARMING

Document Revision and Status

Date Rev Issue Notes Checked Approved

31-07-2017 01 Draft Work in progress

For Comment CM, BS MH

08-08-2017 02 ForInformation

CM, BS MH

Sydney, August 08th, 2017

Ref. No. 177090 B01Craig Marsh

Associate

[email protected] +61 / (02) 9967 2200

Ben SavagePrincipal Mechanical Engineer

Ben.Savage©steensenvarming.com +61 / (02) 9967 2200Michael Harrold

Associate Director

Michael.Harrold©steensenvarming.com +61 / (02) 9967 2200

Disclaimers and Caveats:Copyright © 2017, by Steensen Varming Pty Ltd.All rights reserved. No part of this report may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of Steensen Varming Pty Ltd.This document is confidential and contains privileged information regarding existing and proposed services for the Building. The information contained in the documents is not to be given to or discussed with anyone other than those persons who are privileged to view the information. Privacy protection control systems designed to ensure the highest security standards and confidentiality are to be implemented. You should only re-transmit, distribute or commercialise the material if you are authorised to do so.

Page 2 / 58 steensenvarming.com


Sustainable Design Sydney ABN 50 001 189 037Electrical Engineering Hong Kong t : +61/ 02 9967 2200


S T E E N S E N V A R M I N G

Table of contents1.0 Project Information 5

1.1 Introduction 51.2 Aim 51.3 Reference Material 51.4 Limitations 6

2.0 Executive Summary 72.1 Existing Electrical Services Conditions 72.2 Existing Mechanical Services 72.3 Hydraulic Systems 82.4 Systems Condition Table 102.5 Plant and Equipment Locations 12

3.0 Museum and Building Details 133.1 General Information 133.2 Building Size and Layout 133.3 Site Plans 153.4 Indicative Site Massing Plan 16

4.0 Existing Infrastructure Services 174.1 Summary 174.2 Electrical Services 174.2.1 Substations 174.2.2 High Voltage Infrastructure 194.2.3 Low Voltage Infrastructure 204.3 Telecommunications Services 224.4 Security and CCTV 234.5 Lighting 234.6 Fire Systems 234.6.1 Fire Sprinkler System 234.6.2 Fire Hydrant System 234.6.3 Automatic Smoke Detection and Alarm Systems 244.7 Hydraulic Services 244.7.1 Natural Gas 244.7.2 Water 244.7.3 Sewer System 254.7.4 Stormwater System 264.8 Mechanical Services 274.8.1 General Description 274.8.2 Location of the Central Plant 274.8.3 Condition of the Existing Chillers 284.8.4 Condition of Existing Chilled Water Pumps 284.8.5 Seawater Heat Rejection Plant 294.8.5.1 Condition of the Existing Seawater Heat Rejection Plant 294.8.5.2 Ongoing Seawater Heat Rejection Maintenance Costs 314.8.6 Heating Water System 334.8.6.1 Heat Generation Source 334.8.6.2 Efficiency of Heating System 33




New York e : [email protected]


4.8.7 Existing AHUs and FCUs 344.8.7.1 Condition of the Units 344.8.7.2 Locations of the Units 354.8.7.3 Air Distribution from the AHUs and FCUs 354.8.8 Existing Control System 364.8.9 Existing Humidifiers 384.8.10 Existing Steam Boilers 384.9 Vertical Transportation 40

5.0 New Development Strategies 415.1 General 415.2 Masterplan Approach 425.3 Easements and Right of Ways 425.4 Power Infrastructure 425.4.1 Existing Subterranean Substation 425.4.2 Proposed High Rise Developments 435.4.3 Maintenance of Existing Services 435.5 Low Voltage Services 445.6 Telecommunications Services 445.7 Fire Services 455.7.1 Fire Sprinkler System 455.7.2 Fire Hydrant System 455.7.3 Automatic Smoke Detection and Alarm System 465.8 Hydraulic Services 465.8.1 Natural Gas 465.8.2 Water 475.9 Mechanical Services 475.9.1 Basis of New Development for Mechanical Services Considerations 475.9.2 Redundancy of Systems 475.9.3 Final Use of the Reconfigured Space 485.9.4 Recommended Central Plant Configuration 485.9.5 Estimated Reconfigured Cooling Load 485.9.6 Purpose and Size of a New Low Load Chiller 495.9.7 Water Cooled Packaged Air Condtioning Units 495.9.8 Basis for Replacing the Seawater System with Cooling Towers 495.9.9 A Possible Location for New Cooling Towers 505.9.10 Valves for Retained Systems 525.9.11 Replacement Controls System 535.9.12 Heritage Post Office Building 535.10 Vertical Transportation 545.11 Sustainability Design / ESD 54

Appendix A - Building Services Matrix 55






1.0 Project Information1.1 Introduction

Johnstaff have been engaged to undertake a master planning and concept options

development process for the Powerhouse Museum Site at Ultimo, NSW.Steensen Varming has been engaged by Johnstaff Projects Pty to assess and

provide information on the existing main building services infrastructure at the

Museum of Applied Arts and Sciences (MAAS) Powerhouse Ultimo site.The first and key component of this work is undertaking a site master planning

assessment that will review potential development on the site and potential

divestment strategies.This report documents the existing plant and equipment on the site, it's condition

and its viability in terms of keeping and/or integrating into a wider masterplan

development.For context, the preliminary design work that has been undertaken by Crone

Architects has been used for the basis of all masterplan development

considerations.All information is to be kept confidential, as there are several sensitivities and

aspects regarding this project.

1.2 AimThe main aim of this report is to advise on the general condition and configuration of

the base build services equipment and how it may be impacted by futuredevelopment.

This report aims to:Provide a review of the existing Building Services in terms of capacity,

1.conditioning and code compliance;

Establish building services infrastructure strategies in respect the

2.divestment and selling of part of the site;

Ensure the site masterplan has robust building servicing strategies in place

3.to fulfil the vision for the site and inclusive of future proofing.

1.3 Reference Material

The following documents where referenced in compiling this report:





S T E E N S E N V A R M I N GMUSEUM OF APPLIES ARTS & SCIENCES. Backlog & Capitalised Maintenance

Report Asset Technologies Pacific report Doc Ref: 03499-09-D1 8 date 9th

nSeptember 2010;

n Cultural Venue Renewal Program Final Business Case 6th March 2015;n Service Oriented Asset Management Framework Appendix 6th March 2015;n Indicate Site Massing plans - 6. Appendix VI - Indicative Site Massing Plan le

Sept 2016;a Various copies of "As built drawings" obtain July 2017.

1.4 LimitationsThe following limitations and assumptions exist, and should be considered in the

review of this report:Title searches for easements and right of ways are excluded. These are

nrecommended to be completed;

Check on Hazardous Materials such as Asbestos is excluded. These aren

recommended to be completed by the project manager;Detailed Site Survey of existing in ground services not included. This should ben

completed in the future to help mitigate risks.


Location of subterranean substation





2.0 Executive Summary2.1 Existing Electrical Services Conditions

The majority of the major plant equipment is at, or near the end of its useful service

life and will need to be replaced to facilitate the proposed developments per the

Crone Indicative Site Massing Plan.The implications of the above are significant and potentially expensive for the high

voltage infrastructure, particularly the subterranean substation located below the

forecourt adjacent the brick building located where the low-rise massing is

proposed.

The substations service buildings located along the goods line that are not owned and operated by The Powerhouse Museum. Therefore, the substation equipment, the access to it and the outgoing service cables will need to be maintained during the proposed developments.

Generally, the existing low voltage electrical installation, comprising mainswitchboards, distribution boards, cabling and fixtures and fittings, including lighting, will need to be replaced with new in order to meet current code, Supply Authority and energy efficiency requirements.

2.2 Existing Mechanical Services

The mechanical services were originally designed for a large scale museum with large halls for items such as railway locomotives, steam boilers to power these, and a sizable seawater heat rejection. The original systems were well constructed but that was 30 years ago. Mechanical equipment deteriorates at different speeds so some of the systems such as the air handling units and ducting are in fair order while the controls are very dilapidated and are not operational in some locations due to failures. All other systems are somewhere in between.

The central plant is located below the heritage sections of the Boiler and Turbine Houses. No specific impacts on the operation of the mechanical system are expected from the massing as proposed by Crones. The new reduced scale of the facility can be accounted for by removal of piping and air handling systems serving these areas.





S T E E N S E N V A R M I N GA reconfigured facility is not expected to justify the costs of a seawater cooling

system, which would include a refurbishment of the existing system. It is

recommended to reconfigure the heat rejection system to include new cooling

towers. This along with a new gas fired heating water generators will improve the

overall control of the system and potentially improve the life expectancy of the

chillers.The new use of the facility may necessitate the replacement of the air handling

systems as the systems are currently designed for large halls or the like in numerous

areas. The temperature and humidity control of the existing systems are a bit limited

so increased expectations in this regard may also result in the air handling systems

being replaced.

2.3 Hydraulic SystemsThe existing Hydraulic and Fire Services plant and equipment serves a variety of

locations and is not arranged in a typical fashion. Generally the systems and plant

will require significant modification and/or replacement to suit the future

development planning.

Natural GasThe existing natural gas supply is limited to small demands and may not be suitable

for retention against the scale of the future development. The meter location may

also not be suitable and should be considered in the future.

WaterThe existing water supplies and meter locations may not be suitable against the

future development. Consideration to supplementing and relocating the existing

arrangements should be made.There are six (6) existing watermains within the vicinity of the existing site which

may provide alternative options for connections.

Fire Sprinkler SystemThe existing site wide Fire Sprinkler system is generally in poor condition and is not

suitable for retention or extension. Pipework failures in multiple locations have been

verbally advised and we witnessed several rooms where sprinkler protection in the

plantroom had been capped off. Future staged construction would also be an issue

as the system is a single infrastructure approach with mains from the Museum

building to the Harwood building through the services tunnel. Additional equipment

will be necessary to suit staged development so that the varying sites can be

divided and separately developed

Fire Hydrant SystemThe existing sitewide Fire Hydrant system is designed and installed to Ordinance 70 and not suitable for retention. The future works shall replace this system with a new AS2419 system. Additional equipment will be necessary to suit staged development so that the varying sites can be divided and separately developed.

Automatic Smoke Detection and Alarm SystemsThe existing automatic smoke detection and EWIS will require significant re-workand upgrading to permit future development. Additional equipment will be





S T E E N S E N V A R M I N Gnecessary to suit staged development so that the varying sites can be divided and

separately developed.

Sewer SystemThere are a number of existing sewer connections around the perimeter of the

existing site. Depending on their size and condition, new connections may be

required for the proposed development in order to cater for the increased

population.The existing house sewer currently servicing the Powerhouse will need to be

deviated north and connect into the an existing sewer asset in William Henry Street.

Stormwater SystemThere are a number of existing stormwater assets surrounding the perimeter of the

existing site which may have exiting connections from the site. These assets can be

utilised for connection from the future development's OSD systems. There are also a

number of kerb and gutter connections from the site along Harris Street.






2.4 Systems Condition Table

Building ServiceItem

Location

Observed

Condition

CodeCompliance

Issues?Date

Installed

Estimated Life

Expectancy

(years)

Impacts and Notes

Substations

Subterranean

Fair.

Service Installation issues.

1988

10

Substation services multiple facilities adjacent Goods Line. Access to substation and outgoing services to be maintained throughout development construction.

High impact.

Harris Street

Good

No.

1988

20

Not recommended to retain this substation for the development.New installation required.

MainSwitchboards

Powerhouse basementPoor

Yes

1988

5

Harwood Building, ground floorPoor

Yes

1988

7-10

New installation required.

Distribution

BoardsThroughout

Poor

Yes

1988

5

New DBs required throughout development. New MCCs required throughout development.Motor control

panelsThroughout buildingsPoor

Yes

1988

7-10

Cabling

Throughout buildingsPoor

Yes

1988 onwards

5

New cabling required.

Lighting

Throughout.

Poor

No, but

energy

efficiency

issues198 onwards

5

New energy efficient lighting comprising LED lamp technology recommended.

General powerThroughout.FairNo1988 onwards5New installations required.SecurityThroughout.GoodNo1988 onwards10New installations required.

Seawater

equipmentBasement

Poor

Potentially

1988

2

Recommended to be replaced with cooling towers.Chillers

Basement

Fair

Not defined

Circa 2000

15

Recommended to be

retained.Various pumps

Basement

Poor

No.

1988

2

Recommended to be

replaced.AHUs and FCUs

Various

Fair

Not defined

1988

15

Potentially required to be replaced in a reconfigured facility.Controls

Throughout

Very poor

No.

1988

0

New controls system

required.PipingVariousFairNo.1988

20

Valves

Various

Fair

No.

1988

10

Need to be inspected

internally.Ducting and

plenumsThroughout

Fair

No.

1988

15

Steam boilers

Basement

Fair

Notinvestigated.

1988

15

Expected to be relocated to the new museum at Parramatta.






Humidifiers

Various

Poor

Notinvestigated1988

2

Recommended to be

replaced.Natural Gas

Omnibus Lane Plantroom

Fair

10

Not suitably sized for large scale future development. Single meter for museum building. No gas provisions made to Harwood building or Post Office

Museum CafeFair

Water

Omnibus Lane Plantroomfair

Unlikely to support future development

Post OfficeFair

Harwood Street

fair

Unlikely to support future developmentFire Sprinkler System

Ominbus Lane Plantroom (serves complete site)Poor

Yes

1997

5

System is in poor condition and should be replaced

Fire Hydrant

System

Harwood Building (serves complete site)Poor

Yes

1987approximately

5


Automatic smoke detection and alarm system

Harwood Building Fire Control Room (serves complete site)Fair

Yes

Not clear

5-10

System is in fair condition. Would require significant modification to allow staged development approach





STEENSEN VARMING

2.5 Plant and Equipment Locations





BUILDING SERVICES STEENSEN VARMING

MAAS Powerhouse, UltimoBuilding Services Masterplan Assessment





Document Revision and Status

Date Rev Issue Notes Checked Approved31-07-2017 01 Draft

Work in progress

For Comment CM, BS MH

08-08-2017 02 ForInformation

CM, BS MH

Sydney, August 08th, 2017

Ref. No.177090 B01Craig Marsh

Associate

[email protected] +61 / (02) 9967 2200

Ben SavagePrincipal Mechanical Engineer

Ben.Savage©steensenvarming.com +61 / (02) 9967 2200Michael Harrold

Associate Director

Michael.Harrold©steensenvarming.com +61 / (02) 9967 2200

Disclaimers and Caveats:Copyright © 2017, by Steensen Varming Pty Ltd.All rights reserved. No part of this report may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of Steensen Varming Pty Ltd.This document is confidential and contains privileged information regarding existing and proposed services for the Building. The information contained in the documents is not to be given to or discussed with anyone other than those persons who are privileged to view the information. Privacy protection control systems designed to ensure the highest security standards and confidentiality are to be implemented. You should only re-transmit, distribute or commercialise the material if you are authorised to do so.






Table of contents1.0 Project Information

1.1 Introduction1.2 Aim1.3 Reference Material1.4 Limitations

2.0 Executive Summary

5

7

5556

2.1 Existing Electrical Services Conditions 72.2 Existing Mechanical Services 72.3 Hydraulic Systems 82.4 Systems Condition Table 102.5 Plant and Equipment Locations 12

3.0 Museum and Building Details 133.1 General Information 133.2 Building Size and Layout 133.3 Site Plans 153.4 Indicative Site Massing Plan 16

4.0 Existing Infrastructure Services 174.1 Summary 174.2 Electrical Services 174.2.1 Substations 174.2.2 High Voltage Infrastructure 194.2.3 Low Voltage Infrastructure 204.3 Telecommunications Services 224.4 Security and CCTV 234.5 Lighting 234.6 Fire Systems 234.6.1 Fire Sprinkler System 234.6.2 Fire Hydrant System 234.6.3 Automatic Smoke Detection and Alarm Systems 244.7 Hydraulic Services 244.7.1 Natural Gas 244.7.2 Water 244.7.3 Sewer System 254.7.4 Stormwater System 264.8 Mechanical Services 274.8.1 General Description 274.8.2 Location of the Central Plant 274.8.3 Condition of the Existing Chillers 284.8.4 Condition of Existing Chilled Water Pumps 284.8.5 Seawater Heat Rejection Plant 294.8.5.1 Condition of the Existing Seawater Heat Rejection Plant 294.8.5.2 Ongoing Seawater Heat Rejection Maintenance Costs 314.8.6 Heating Water System 334.8.6.1 Heat Generation Source 334.8.6.2 Efficiency of Heating System 33






4.8.7 Existing AHUs and FCUs 344.8.7.1 Condition of the Units 344.8.7.2 Locations of the Units 354.8.7.3 Air Distribution from the AHUs and FCUs 354.8.8 Existing Control System 364.8.9 Existing Humidifiers 384.8.10 Existing Steam Boilers 384.9 Vertical Transportation 40

5.0 New Development Strategies 415.1 General 415.2 Masterplan Approach 425.3 Easements and Right of Ways 425.4 Power Infrastructure 425.4.1 Existing Subterranean Substation 425.4.2 Proposed High Rise Developments 435.4.3 Maintenance of Existing Services 435.5 Low Voltage Services 445.6 Telecommunications Services 445.7 Fire Services 455.7.1 Fire Sprinkler System 455.7.2 Fire Hydrant System 455.7.3 Automatic Smoke Detection and Alarm System 465.8 Hydraulic Services 465.8.1 Natural Gas 465.8.2 Water 475.9 Mechanical Services 475.9.1 Basis of New Development for Mechanical Services Considerations 475.9.2 Redundancy of Systems 475.9.3 Final Use of the Reconfigured Space 485.9.4 Recommended Central Plant Configuration 485.9.5 Estimated Reconfigured Cooling Load 485.9.6 Purpose and Size of a New Low Load Chiller 495.9.7 Water Cooled Packaged Air Condtioning Units 495.9.8 Basis for Replacing the Seawater System with Cooling Towers 495.9.9 A Possible Location for New Cooling Towers 505.9.10 Valves for Retained Systems 525.9.11 Replacement Controls System 535.9.12 Heritage Post Office Building 535.10 Vertical Transportation 545.11 Sustainability Design / ESD 54

Appendix A - Building Services Matrix 55





S T E E N S E N V A R M I N Gnecessary to suit staged development so that the varying sites can be divided and

separately developed.

Sewer SystemThere are a number of existing sewer connections around the perimeter of the

existing site. Depending on their size and condition, new connections may be

required for the proposed development in order to cater for the increased

population.The existing house sewer currently servicing the Powerhouse will need to be

deviated north and connect into the an existing sewer asset in William Henry Street.

Stormwater SystemThere are a number of existing stormwater assets surrounding the perimeter of the

existing site which may have exiting connections from the site. These assets can be

utilised for connection from the future development's OSD systems. There are also a

number of kerb and gutter connections from the site along Harris Street.





STEENSEN VAR MING

2.4 Systems Condition Table

Building ServiceItem

Location

Observed

Condition

CodeCompliance

Issues?Date

Installed

Estimated LifeExpectancy

(years)

Impacts and Notes

Substations

Subterranean

Fair.

Service Installation issues.

1988

10

Substation services multiple facilities adjacent Goods Line. Access to substation and outgoing services to be maintained throughout development construction.

High impact.

Harris Street

Good

No.

1988

20

Not recommended to retain this substation for the development.MainSwitchboards

Powerhouse basementPoor

Yes

1988

5


Harwood Building, ground floorPoor

Yes

1988

7-10


Distribution

BoardsThroughout

Poor

Yes

1988

5

New DBs required throughout development.Motor control

panelsThroughout buildingsPoor

Yes

1988

7-10

New MCCs required throughout development.Cabling

Throughout buildingsPoor

Yes

1988 onwards

5

New cabling required.

Lighting

Throughout.

Poor

No, but

energy

efficiency

issues198 onwards

5

New energy efficient lighting comprising LED lamp technology recommended.

General powerThroughout.FairNo1988 onwards

5New installations required.SecurityThroughout.GoodNo1988 onwards

10New installations required.Seawater equipmentBasement

Poor

Potentially

1988

2

Recommended to be replaced with cooling towers.Chillers

Basement

Fair

Not defined

Circa 2000

15

Recommended to be

retained.Various pumps

Basement

Poor

No.

1988

2

Recommended to be

replaced.AHUs and FCUs

Various

Fair

Not defined

1988

15

Potentially required to be replaced in a reconfigured facility.Controls

Throughout

Very poor

No.

1988

0

New controls system

required.PipingVariousFairNo.1988

20

Valves

Various

Fair

No.

1988

10

Need to be inspected

internally.Ducting and

plenumsThroughout

Fair

No.

1988

15

Steam boilers

Basement

Fair

Notinvestigated.

1988

15

Expected to be relocated to the new museum at Parramatta.






Humidifiers

Various

Poor

Notinvestigated1988

2

Recommended to be

replaced.Natural Gas

Omnibus Lane Plantroom

Fair

10

Not suitably sized for large scale future development. Single meter for museum building. No gas provisions made to Harwood building or Post Office

Museum CaféFair

Water

Omnibus Lane Plantroomfair

Unlikely to support future development

Post OfficeFair

Harwood Street

fair

Unlikely to support future developmentFire Sprinkler System

Ominbus Lane Plantroom (serves complete site)Poor

Yes

1997

5


Fire Hydrant

System

Harwood Building (serves complete site)Poor

Yes

1987approximately

5


Automatic smoke detection and alarm system


Yes

Not clear

5-10







2.5 Plant and Equipment Locations






3.0 Museum and BuildingDetails

3.1 General Information

The Powerhouse Museum is the major branch of the Museum of Applied Arts &

Sciences (MAAS) in Sydney, the other being the historic Sydney Observatory.The museum moved in March 1988 to its present location, into a converted

electric tram power station which was modified at the time from its original 1902

construction with new building services.The power station site at 500 Harris Street Ultimo Sydney, was subsequently

renamed to the Powerhouse Museum.The Powerhouse Museum complex comprises two stages, a northern annex and the

Ultimo Post Office. The two stages are the Harwood building (formerly the Ultimo

Tram Shed) and the power station building comprising three interconnected

buildings - the Wran building, Turbine Hall and Boiler Hall.

3.2 Building Size and LayoutAs reported in past documents the Powerhouse Museum site at Ultimo is an

integrated complex comprising the museum building, Harwood building (formerly

the Ultimo Tram Shed) and the Ultimo Post Office. The combined floor area of the

buildings is approximately 42,594m2, and contains exhibition space, function rooms,

offices and a cafeteria.






Indicative site building layout


The site houses two heritage items - the Post Office building fronting Pier St overpass and Harris Street and the Ultimo Power Station building, which has repur osed as the Powerhouse




STEENSEN VARMING

3.3 Site Plans

The site also contains two non-heritage elements - the Harwood Building

warehouse and the Powerhouse Museum extension that fronts Harris Street.


Heritage items on site INEM Non heritage items on site Darling Harbour developments Site Bdy

steensenvarming.com




STEENSEN VARMING

Site massing (reference: Crone Study of Alternate Uses, page 6)

3.4 Indicative Site Massing Plan

Opportunities exist to redevelopment the site. These do not represent the proposal but rather indicate the planning space limits.

Site Height Limits

Page 16 / 58



New York e: info©steensenvarming.com

STEENSEN VARMING

4.0 Existing InfrastructureServices

4.1 SummaryThis section of the report provides an overview of the existing building services in

terms of general overview, capacity, condition and code compliance.The information within is based on the brief site inspection, and listed reference

material such as existing drawings, reports and manuals. Information obtained from

discussions and liaison with relevant stakeholders and utility providers has also been

used to provide this overview of the existing services.

Reference should also be made to the past TAM register or required works.

n Service Oriented Asset Management Framework Appendix 6th March 2015.The listed works within the TAM and other issues as detailed within should be

considered in budget planning for the redevelopment project.4.2 Electrical Services

4.2.1 SubstationsThe Powerhouse Museum and Harwood Building are presently served by two

separate Ausgrid owned substations.

One substation is a subterranean substation comprising three(3) 1500kVAtransformers. The substation is accessed via a confined access trap door located

adjacent the brick outbuilding located within the level 1 forecourt. The brick building

is owned and utilised by Ausgrid for testing and LV distribution and therefore

contains a small testing substation and low voltage panels.The substation and brick building is located under the proposed low rise massing (to

maintain vista to Boiler House facade) per the Crone Indicative Site Massing Plan.It is understood that this substation provides three low voltage supplies to the

Powerhouse Museum main switchboard via cabling installed in dedicated cable trays

and underground conduits and one low voltage service supply to the Harwood

Building main switchboard via an underground service link/trench.It is also understood that the subterranean substation also provides the electrical

supply to a number of UTS buildings located along the pedestrian area known as

The Goods Line.


Three LV supplies to main switchboard

heritage

APProxt ton orAusgrid uilding and





Indicative image depicting existing Ausgrid substation and outgoing LV servicesAusgrid typically do not allow modern developments to comprise new or modified

subterranean substations without prior written approval. This is to prevent flooding

and to maintain safe working access and maintenance routes to their equipment.

Page 19 / 58 steensenva rm ing.com




STEENSEN VARMINGThe second substation that services the Powerhouse heritage buildings and Harris

Street extension is located on grade at Harris Street. The substation is located

within a dedicated space contained within the industrial building opposite the

museum extension and is owned and operated by Ausgrid.

Indicative image showing location of Harris Street substationIt is understood that this substation provides one low voltage service to the

Powerhouse Museum main switchboard via underground cabling within dedicated

conduits.Due to ownership and access rights, the exact layout of the substation and its

compliance with latest code and access requirements could not be verified.

4.2.2High Voltage InfrastructureThe major roads that surround the Powerhouse and Harwood building sites, namely

Harris Street and the Pier Street overpass, are used as major reticulation routes for

Supply Authority owned high voltage infrastructure.There are presently 'AV and 33kV underground networks reticulating below the

pavements of each road.There are also likV and 33kV networks located below Darling Drive which have been

recently modified to suit the new Darling Drive developments.






4.2.3 Low Voltage Infrastructure

Powerhouse Museum Main Switchboard

Main Switchboard.The Powerhouse museum, including the 1988 extension, is serviced by a low voltage

main switchboard located within the basement main plant space. The switchboard

was installed in 1988 and except for running repairs, hasn't been touched since.Four(4) 2000A services are derived from the two substations referred to in section

3.1.1 and terminate into the main switchboard. Through discussion with on-site

maintenance operatives, the capacity of the incoming services greatly exceeds the

demand of the museum buildings.The main switchboard contains multiple fuse outlets that service power and lighting

distribution boards, mechanical control panels, lifts and other large loads within the

building. The protective devices are not of the latest generation and are not

compliant with the current Wiring Rules as set out in AS/NZS 3000. In many cases,

the protective fuse devices used have been discontinued by suppliers and are no

longer available for purchase.The main switchboard is nearing the end of its useful service life, with maintenance

staff continuously having to make running repairs to defective devices in order

maintain the electrical service to the museum.

The switchboard has adequate maintenance space available, but is located within an

open basement area as opposed to a dedicated plant enclosure. This is not

compliant with AS/NZS 3000.





S T E E N S E N V A R M I N GAn assessment of the electrical installation in terms of asbestos and other hazardous

materials has not been completed.

Harwood Building Main SwitchboardThe main switchboard located within a dedicated electrical plant room on the ground

floor of the Harwood Building accessed via a single door. As the main protective

device is rated at 1600Amps it is not compliant with the latest code requirements

which state that two means of access/egress/escape must be provided.Similar to the Powerhouse Museum main switchboard, the switchboard contains

fuse based protective devices that are no longer compliant with AS/NZS 3000, nor

possible to purchase.Compared to the Powerhouse Museum main switchboard, the Harwood Building

switchboard is in relatively good condition and there does not appear to be a

likelihood of service failure.

Sub-mains Cabling and ReticulationMIMS cabling is used extensively within both the Powerhouse Museum and the

Harwood Building and is approaching the end of its useful service life due to

corrosion and stiffening.On-site maintenance operatives have experienced issues with being able to repair

MIMS cabling due to the reluctance of installers to repair existing copper sheaths

and re-terminate the cable. Thus, cables that are damaged beyond repair are usually

replaced with XLPE or PVC sub-mains cabling.Many of the MIMS sub-mains cabling has been installed so that the outer sheath is

being used as the earth conductor. Cable degradation has led to earth leakage

problems and therefore circuit faults. This has been rectified on-site via the

installation of copper bridges between eroding conductors within the main

switchboard. This is not a long term reliable solution and would need to be rectified

should any development take place anywhere within the two buildings.Issues of faults within sub-mains cabling, leading to floating voltages between

neutral-earth and neutral-conductor etc. have also been reported by on-site

maintenance operatives. This issue has also been reported in final circuit cabling.

There is an existing services trench that joins the Harwood and Powerhouse

heritage building. The trench reticulates below Omnibus Lane (off Macarthur Street)

and contains electrical, communications and hydraulic services).

Standby GenerationStandby generation is achieved by on-site portable diesel generator units that are

not permanently connected.On-site maintenance operatives currently replace protective devices in the main

switchboard with ones that are connected to the generator and associated sub-

mains cable and rewire as necessary within the main switchboard. This does not

meet the requirements of a 'standby power source' per current code requirements.





S T E E N S E N V A R M I N GAny redevelopment would necessitate the permanent connection of a standby

generator.

MeteringThe existing electrical installation comprises Supply Authority meters on each of the

four incoming 2000A services to the Powerhouse Museum main switchboard. There

are no sub-meters installed to monitor individual power, lighting and large

equipment loads.Access to and copies of energy metering data from the energy retailer are required

for review.

4.3 Telecommunications ServicesMost carriers have significant telecommunications infrastructure located below the

roads highways that surround the Powerhouse museum and Harwood Building. The

largest of which comprises Optus services that emanate from their data centre

located directly opposite the Powerhouse Museum on Harris Street.The telecommunications lead-in cabling for the Powerhouse Museum and Harwood

building reticulates from Macarthur Street into the main security monitoring space. It

is understood that an AarNet carrier service is utilised by the Powerhouse Museum

site.

V o l e

OA le % P;ol ••....L.

v dlAarNet incoming service reticulation route (ref• Dial Before You Dig)

There is also a dedicated fibre link between the Powerhouse Museum and Harwood Building systems and the Powerhouse facility at Castle Hill provided via AarNet.

Page 22 / 58 steensenvarmIng.com




S T E E N S E N V A R M I N GA fibre network is distributed from the Main Communications space throughout the

site to communications racks located throughout each of the three buildings, which

then serve final outlets within a 90m radius.Field cabling is typically Cat 5 copper and installed on cable trays and appears to be

in relatively good condition.

4.4 Security and CCTVThe building contains an electronic access control and monitor system together with

a Closed Circuit Television (CCTV) surveillance system. The headend at the Power

House also monitors the Sydney Observatory site.

4.5 LightingThe internal and external lighting has been modified over the years. The existing

lighting in parts need further work in respect to ensuring functional adequacy,

energy efficiency and code compliance.

4.6 Fire Systems

4.6.1 Fire Sprinkler SystemBoth the Museum and Harwood buildings share a single Fire Sprinkler system with a

150mm supply connected to the 300mm Omnibus Lane Sydney Water Watermain.

The booster, pump, air compressor and alarm valves are located in the Hydraulics

Compound on Omnibus Lane. Pipework between the Museum building and

Harwood Building is reticulated via an underground services tunnel. The sprinkler

systems are largely pre-action type and were originally installed in 1987.The existing system is in poor condition and we were advised during our site walk

that lack of pressure holding of the pipework is a repeat issue. There was evidence

within the basement that several areas had been taken off the system pipework as a

result of pressure test failures.

4.6.2 Fire Hydrant SystemThe site has a single Fire Hydrant system with a 100mm diameter connection to the

300mm Sydney Water Watermain in Ominbus Lane. The Fire Hydrant booster is

located in the Hydraulics Compound and single pump-set located in the Harwood

Building. The system is an Ordinance 70 compliance installation which will need to

be replaced with an AS2419 compliant Fire Hydrant System to suit the future

development.





S T E E N S E N V A R M I N G4.6.3 Automatic Smoke Detection and Alarm

SystemsThe Powerhouse and Post Office building is generally provided smoke detection and

Evacuation system coverage as part of a networked solution. Provision of smoke

detection and evacuation within the Harwood building is not compliant with AS1670

requirements. There are several Sub Fire Indication Panel (SFIP) and Emergency

Control Panels (ECP) through the Powerhouse buildings. These are networked to

the Main Fire Indication Panel (MFIP) and ECP which are located in the Fire Control

Room/ Security Office in the Harwood Building.The Powerhouse also has a site in Castle Hill which has a communications link to the

Main FIP. We understand that smoke detector isolations and the like at Castle Hill

can be carried out at the Powerhouse MFIP.The Powerhouse portion of the system is certified as compliant to AS1670.1 and has

been recently upgraded by Wormald using TYCO MX panels and detectors.

4.7 Hydraulic Services

4.7.1 Natural GasThe Powerhouse building has an incoming main supply connected to the main in

Ominbus Lane. The gas meter is located in the Hydraulics compound underneath

the Museum and serves a single gas boiler in the basement plantroom only. The

Powerhouse Café has a small gas meter. There is no general gas supply to any of

the other buildings on the site including the Post Office or Harwood Building.

4.7.2 Water

There are three water supplies on the site:

nPowerhouse building connected to Ominbus Lane;nPost Office connection location not known; andnHarwood Building connected to Mary Ann Street.

New connections will need to be provided to cater for the future development.

The Sydney Water Hydra shows that the following watermains exist within the

vicinity of the existing site:

nDN250 watermain along the north of the site in William Henry Street;DN300, DN250 and DN150 watermains which all run along the west of the site inn

Harris Street;nDN100 watermain to the west in Omnibus Lane, and;

DN150 watermain to the south at the corner of Mary Ann Street and Omnibusn

Lane.






4.7.3 Sewer SystemThe Sydney Water Hydra and Sewer Service Diagrams show that the following

sewer mains existing within the existing site:There is an existing trunk sewer main which traverses the north eastern corner of

the site. This asset was laid in 1987, it is 1016mm x 1270mm in size and has an IL

nof approximately IL-4.0.

There is an existing oviform sewer main running along the east of the site in

Darling Drive. This oviform was laid in 1881, it is 812mm x 1219mm in size and is

approximately 5.0m deep. This sewer asset has one (1) manhole located withinn

the site boundary, located at the corner of Darling Drive and Hay Street.This asset also traverses the south-eastern corner of the site. At this location, the

sewer asset is approximately 4.80m deep.These assets may not pose any great restrictions on the proposed development

however, it is important that they be considered throughout the design

development.

The following sewer mains exist within the vicinity of the existing site:DN225 sewer main along the north of the site in William Henry Street which

n

appears to have a number of existing connections from the existing site;The 812mm x 1219mm sewer asset running along the east of the site appears to

have a number of existing sewer connections from the existing site. Refer to then

sewer service diagram for more details;nDN300 sewer main along the west of the site in Harris Street;n DN225 sewer main along the west of the site in Omnibus Lane

DN225 sewer main to the west of the site at the corner of Omnibus Lane andn

MacArthur Street, and;nDN450 sewer main along the south of the site in Mary Ann Street.

In order to keep the Powerhouse Museum building serviced throughout the

construction of the development to the east, the existing house sewer which

currently serves the Powerhouse Museum building will need to be deviated north

and connect into the existing sewer asset in William Henry Street. Please refer to

the following page for an illustration of the deviation.


EXISTING HOUSE SERVICE SEWER TO BE· DEVIATED AT THIS POINT TO WILLIAMS ______

EXISTING HOUSE SERVICE SEWER TO BE REMOVED AS PART OF NEW DEVELOPMENT AND A NEW CONNECTION PROVIDED TO THE EXISTING SEWER IN DARLING





Sewer system deviation.

4.7.4Stormwater SystemAn existing stormwater asset traverses across the middle of the site reticulating

west to east from Omnibus Lane to Darling Drive. The stormwater asset is DN750 in

size and increases to a DN950 as it approaches the eastern boundary of the existing

site. This asset has a total of two (2) stormwater pits located within the site

boundary.This asset may not pose any great restrictions on the proposed development

however, it is important that it is considered throughout the design development.The Sydney Water Hydra show that the following stormwater assets exist within the

vicinity of the existing site:

n The existing 812mm x 1219mm sewer asset along Darling Street to the east of the site appears to have a number of stormwater gully pits draining to it. Refer to the sewer service diagram for more details;

Two (2) existing stormwater pits are located to the west of the site in Harrisn

street;There appears to be a number of kerb and gutter conntections from the site ton

Harris Street;

Two (2) existing stormwater pits are located to the west of the site in MacArthur

Street and Omnibus Lane which reticulate into the DN750 which traverses then

site, and;





S T E E N S E N V A R M I N GTwo (2) existing stormwater pits are located to the south of the site in Mary Ann

Street which appear to reticulate into an existing DN750 stormwater asset that

·reticulates west along Mary Ann Street.

The above assets may be utilised for connection to from the future development's

OSD systems.4.8 Mechanical Services

4.8.1 General DescriptionThe chilled water system consists of 4 water cooled chillers, primary and secondary

chilled water pumps, and a heat rejection system based on a seawater cooled

system.The chilled water is reticulated throughout the site to the various air handling units

(AHUs) and fan coil units (FCUs) located in plantrooms and within the conditioned

spaces.The condenser water is used for heating in the FCUs and AHUs. The heating water

piping is reticulated with the chilled water piping to the AHUs and FCUs.

4.8.2 Location of the Central Plant

uni EN ■OZONE

The central plant is located below the heritage listed powerhouse building. With this

position, it is not subject to affects as dictated by the proposed massing plans for

the site as shown above. The indicative location of the central plant is as per the

following sketch:





STEENSEN VARMING

Indicative locations of chilled water system central plant

4.8.3 Condition of the Existing ChillersThere are 4 chillers but 1 is not operational. The vessel is cracked on the chiller that

is not operational so it is not repairable and is being as spares for the other chillers.The 3 remaining chillers are reportedly adequate to maintain the cooling load of the

whole facility during summer. The existing chillers are in the order of 15 years old

with an expected working life of 20 to 30 years. The existing operable chillers are in

reasonable condition and are worthy of being retained in a change of function for

the powerhouse museum site, especially one that reduces the overall cooling load

on the museum site.

Existing water cooled chillersThe existing valves associated with the chillers appeared to be original and these

would need to be expected to be inspected and potentially replaced in areconfigured use of the museum plant. This would need to occur during a shutdown

of the museum to allow the refurbishments to occur.

4.8.4Condition of Existing Chilled Water Pumps.The existing chilled water pumps are at the end of their working life and would need

to be replaced in a reconfigured use of the museum plant. Like the chillers, the

associated valves would need to be expected to be inspected and potentially

replaced in a reconfigured use of the museum plant.





S T E E N S E N V A R M I N GA photo of the existing pumps is as follows showing the dilapidated condition of the

pumps. The rusted bolts on the outside of the pump are an indication of the

expected internal condition of the pumps that are subject to bearing wear and other

degenerative conditions. Maintenance on the pumps is possible but notrecommended when undergoing refurbishments for a projected life requirement of

at least 15 years. The 15 years correlates to the expected remaining working life of

the chillers.

Existing chilled water pumps

4.8.5Seawater Heat Rejection Plant

4.8.5.1 Condition of the Existing Seawater Heat Rejection Plant

The existing seawater heat rejection plant is being progressively repaired and components replaced due to the age of the system. During the inspection, an extension shaft, or similar, was to be replaced for a valve that was recently replaced. This is an indication of the plant needing to be refurbished if it is to be retained for another 15 years.

The conditions to meet the EPA regulations is understood to be a maximum temperature rise of 1°C of the water being returned to the harbour. As the site is expected to be reduced in overall heat rejection this should be able to be accommodated by the existing heat exchangers. The continued rise in temperature of Darling Harbour is a concern to the EPA given the likes of the Star and





STEENSEN VARMINGBarangaroo also now use it as a heat sink. Presumably given the museum is an

existing system, if it maintains operation of the seawater heat rejection;then the

EPA will not be able to impose higher constraints than the current constraint of 1°C.A photo of the heat exchangers is per the photo below that shows the heat

exchangers appear to be in reasonable condition. This is not conclusive in any way

as the accumulation of marine growth and deterioration of the heat exchangers will

be internal to the equipment.

External view of the existing seawater heat exchangersThe piping was not inspected that connects to Darling Harbour but was understood

to be installed in removable glass sections. Whether this is still the same or not is

unknown. The length of run in the original tunnels associated with the powerhouse

is in the order of 1km. The proximity of Darling Harbour is as shown on the following

sketch that indicates it is a fair distance to the harbour.


adameLiSsauds:S9ciney0 SEA LIFE

7Siclhey Aqi

JQueen Victor

Skeol'OC4

1462- `66





eatreo

Australian Na,Vonal; Maritime Museum`

1.40•••i.J •

: 4:5 • Sydney ToTi a n t0'''. . • 1. INDICATIVE ROUTE OFta • las. 8 SEAWATER PIPING WITH A

$:ri ste THE ORDER OF 1kmLENGTH IN 1 DIRECTION OF INIs Hirbour• •....0 - • The Met

•01 ., Chinesetr; ••

1' Of Friencii c.

44 vet .-"'Powettouse Museume

GqpgleA map of the Powerhouse Museum relative to Darling Harbour4.8.5.2 Ongoing Seawater Heat Rejection

Maintenance CostsAs a comparison for ongoing costs for a reduced capacity system, the costs to

maintain the seawater heat rejection system at the maritime museum are in the

order of $100,000 per year. These costs include:

n Annual dismantling of the heat exchangers to clean the growth out in the plates;n Regular cleaning of the screens and strainers;· Chemical treatment (within the allowable limits of the EPA); and· Cleaning of pipes and valves of marine growth.

Some example photos of the maintenance requirements at the maritime museum are as follows:






Accumulation with heat exchanger restricting the water flow and reducing the efficiency

of the system

Damage to a seawater pump impeller






4.8.6 Heating Water System

4.8.6.1 Heat Generation SourceThe heating water system uses the condenser water from the chillers to provide

heating in the AHUs and FCUs. There were no other heating water generators for

the system independent of the chillers.

4.8.6.2 Efficiency of Heating SystemThis heating system appears to be highly efficient but it is not clear that it would

allow for suitable chilled water and heating water supply temperatures. A photo of a

chiller LCD is shown below shows the heating supply water at 40.7°C while the

chilled water supply temperature is at 14.1°C. The chilled water setpoint is 6°C and it

is not known why the setpoint is so far off being achieved.

Chiller LCD showing the water temperatures associated with the chiller

The heating water temperature of 40°C would require the coils in the AHUs and FCUs to be specifically designed for such a relatively low temperature. As this is the original design it is presumed the coils are appropriately sized.

A chilled water temperature of 14°C is relatively high. If humidity control is required, then this would need to be reduced to at least 8°C. For effective control though the water should be in the order of 6°C. The heating water temperature wouldpresumably be reduced a similar amount if the chilled water is reduced. This would then reduce the heating capacities of the heating coils in the AHUs and FCUs.

When water-cooled chillers operate with water temperatures as seen on the chiller, they operate at a lower efficiency than possible. Water cooled centrifugal chillers such as these operating at 6°C would

preferably operate with an entering condenser water in the order of 18°C. This would provide a significantly improved efficiency for





S T E E N S E N V A R M I N Gthe chiller. More efficiently operating chillers in combination with a gas fired heating

water would provide independence of the cooling of heating controls for the central

plant. This would provide more reliable humidity control if required to beimplemented in the future planning of the retained section of the museum.4.8.7 Existing AHUs and FCUs

4.8.7.1 Condition of the UnitsThe existing are in reasonable condition and would be expected to have a working

life of at least another 15 years. A newer fan coil unit was observed in the Harwood

behind the fire control room. Most of the units are original installations and some

sample examples of their condition are in the photos below.

A large AHU in the plantroom near the chillers serving the heritage building above.Note the coils are configured heating first and then cooling so this unit is not suitable

for use in close humidity control. Close control would require cooling for

dehumidification first followed by reheat of the air.


Engineering services enable architecture. Mechanical Engineering Copenhagen Level 8, 9 Castlereagh StreetSean Mulcahy Lighting Design London Sydney, NSW. 2000, Australia




A smaller AHU in the plantroom under the extension near Harris St. Note the old-style

isolation valves but that everything is in reasonable condition, externally. The valve

actuators are also the old-style from the presumably the original installations

4.8.7.2 Locations of the UnitsThe units are located under or in the various buildings that make up the existing

Powerhouse Museum. If the proposed reduction of the museum occurs and only the

heritage buildings are retained, then the heritage building plant can be retained with

the central plant and the AHUs. The demolition of the other buildings would only

entail disconnecting and capping the chilled and heating piping.

4.8.7.3 Air Distribution from the AHUs and FCUsThe museum currently has a large proportion of open gallery spaces. The method of

distributing the air to control the conditions with these spaces appears to be more

from a large volume of air rather that specific treatment of the spaces. Examples are

shown in the photos below for the Turbine Hall where the supplies are from large

outlets on columns distributed along the walls.


Lower level of Turbine Hall with AHU outlets on the tops of the




STEENSEN VARMING

Outlets like column capitols in the Turbine Hall. Note the height above to what appears

to be an uninsulated roof

This open type distribution will not suit any additional internal floors within the halls

in a reconfigured museum space. This may be the case for instance in a revised use

as an art gallery. To air condition other types of configurations new ducting and

AHUs may be required. How much is able to be reused will depend on the

expectations of the climate control within any reconfigured spaces.

4.8.8 Existing Control SystemThe existing controls system has not been upgraded since the original system was

installed 30 years ago. The system needs to be replaced if the mechanical services

in the museum are to be retained in any manner. Some examples of the outdated

and existing controls are as shown in the photos below.

Once the extent of the services to be retained is known then these could be

incorporated in to a new controls system.






An analogue temperature switch in the Harwood Building that is potentially redundant.

Note the dial for setpoint adjustment rather than the current technology of software

based setpoint adjustments at a central point (head end) with a PC

Functioning thermostats that look to be original installations. Note they are labelled

"T/STAT" indicating an outdated technology of actual thermostats rather than digital

temperature sensors





STEENSEN VARMING

An existing humidity control panel in the Harwood Building.Note the dial on the right for the humidistat has options for Open, Auto and Closed

with the dial set at Closed. This control panel is presumably not functioning correctly

and has been partially disabled

4.8.9Existing HumidifiersThe existing humidifiers are in need of replacement. The burning smell that was

noted in the inspection was advised to be related to the humidifiers that were

glowing when in operation. Besides them being dilapidated they also would appear

to be a fire risk.Any areas of the reconfigured museum that would require humidity control would be

recommended to be replaced with new humidifiers, with potentially newer

technology.

4.8.10 Existing Steam BoilersThere are 2 steam boilers in the plantroom near the chillers. These are shown in the

photos below. It is recommended that these be relocated to the new Powerhouse

museum at Parramatta if retained. This is due to them being a significant

maintenance item with daily maintenance requirements that would be more suitable

for a large technology museum.The use of these boilers could be enlarged if required as they are relatively large.

Different types of equipment such as wool bale compactors and timber mill saws

could be demonstrated similar to the steam equipment displays at Echuca.






The larger of the 2 steam boilers in the existing museum

4The smaller of the 2 steam boilers in the existing museum.

Note what appears to be the chemicals for the boiler operation on the left and thefeed tank high on the wall behind the boiler






4.9 Vertical TransportationThere are several lifts throughout each building that provide vertical transportation

from floor to floor. In most cases the lifts provide a general circulation link between

floors.There are two main passenger lifts and a goods lift installed in the stage 2 section of

the Museum. The site also has a total of eight escalators and a small stair lift.The stage 1 section of the Powerhouse Museum contains four lifting hoists, one lift

and a service dumb waiter lift.

The existing lifts are of reasonable quality and are fit for their existing purpose.There are two exceptions to the above. There is a hydraulic service goods lift within

the Harwood Building that transports large artefacts to and from the basement

storage facility. There is also a glass passenger lift located within the heritage

building that is accessible from the Harris Street entrance to the museum which

provides a link between the new and old buildings.






5.0 New DevelopmentStrategies

5.1 General

This section of the report provides an overview of the impact of a totalredevelopment of the site in respect to the Electrical, Hydraulic. Fire and Mechanical

Services.It establishes building services infrastructure strategies respect the divestment and

selling of part of the site and helps to ensure the site masterplan has robust building

servicing strategies in place to fulfil the vision for the site and inclusive of future

proofing of the facilities that are to be retained.For the purpose of this report, it is assumed that the extent of the Museum will be

limited to the heritage buildings indicated in orange colour below. The lots adjacent

will be sold for development with the zones in magenta colour indicating their

possible size.

Site Massing Diagram


Master Plan

0

Master

Planning

Regulations

\Ns.... 0 °Wrinkles




STEENSEN VARMING

5.2 Masterplan ApproachThe extent works should be designed with respect to a master plan approach such

that the redevelopment of the Museum considers a holistic view starting with the

important functional briefing requirements and desired solutions.At this point it is assumed that for the Museum Building sections that are planned to

be retained, that their functional use of those spaces will remain as they are now.It is noted that if the existing functional requirements change so will the associated

building services requirements. The services for the museum will need to be

reviewed once a final brief is completed.

Implementation e .̂ ",►

Functional Requirements

and Desired Solution

Existing Review

Diagram - Master Plan Approach

5.3 Easements and Right of Ways

As the site was a transport power station at first use, so there is a strong possibility that there are existing easements within the building footprint.The Title searches for easements and right of ways are excluded. These are

recommended to be completed and checked with the utility suppliers.

5.4 Power Infrastructure

As the proposed redevelopment of the site is conceptual, no preliminary discussions have been undertaken with Supply Authorities at this stage.

5.4.1 Existing Subterranean Substation

The indicative site massing plan performance envelope suggests that the existing subterranean three transformer chamber substation and adjacent brick building is





S T E E N S E N V A R M I N Glocated in the area earmarked for low rise massing. Should the low rise massing be

constructed it will trigger significant upgrade and augmentation works to the Ausgrid

electricity and infrastructure in this area. Therefore, this presents two options for

consideration: retain or replace.

Option 1— Retain existing substation and brick buildingOne option is that the proposed low rise massing is omitted from any proposed

developments in order to maintain the substation in its existing location and

maintain the existing access to it.

Option 2 — Replace existing installation with new substationsThe second option is that the low-rise massing is constructed and the development

allows for a chamber substation as part of its footprint. The size of the substation

will need to be established via consultation with Ausgrid as part of any development

process.To comply with the latest NSW Service Installation rules and Ausgrid requirements,

the substation will need to be located on grade and accessed from the facade of any

development. The substation will be owned and operated by Ausgrid.Due to heritage restrictions associated with the Powerhouse museum, it is

anticipated that a new substation will also serve a new main switchpanel located

within the basement of the Powerhouse museum i.e. replacing the existing

installation.It should be noted that there will be a significant cost associated with the removal,

replacement and augmentation of the existing infrastructure that should be

considered as part of the development proposals.

5.4.2 Proposed High Rise DevelopmentsPer the Crone Indicative Site Massing Plan, the existing lots associated with the

Harris Street museum extension and the Harwood Building have been earmarked

for high rise, mixed use development. Due to the change in use and change in

footprint, the developments will need to allow for chamber substations that meet

the NSW service installation and Ausgrid requirements.As a part of the development process associated with the mixed-use developments,

the developers will need to consult Ausgrid to determine if new chamber

substations are to be appropriately sized in order to supply existing buildings

presently served from the subterranean substation e.g. the UTS buildings located

adjacent the Goods Line.

5.4.3 Maintenance of Existing ServicesAs the existing subterranean substation services, other local facilities, the substation,

the adjacent brick building and LV panel and all outgoing cable routes will need to

be protected and maintained as part of any development surrounding the level 1

forecourt (i.e. the low-rise mass area), until such a time that the service can be





STEENSEN VARMINGswitched to a new supply point e.g. a new substation installed within one of the new

developments.To facilitate the above, it is recommended that a detailed in-ground survey is

conducted to accurately identify existing service routes so that they can be

appropriately protected during the ground works and construction of the low-rise

mass development.It is not recommended that the existing substation accessible from Harris Street is

utilised as a part of any new developments, due to the disruption to the services

installed below Harris Street. As the new and existing facilities will have adequate

power from new or retained substations it can be isolated in future.Due to the scale of potential developments proposed, it is unlikely that the existing

service trenches between the heritage building and the Harwood Building will be

retained.

5.5 Low Voltage Services

The low voltage electrical infrastructure, comprising the main switchboards,distribution boards and cabling has either reached, or is close to reaching the end of

its useful service life.Further to the above, the current LV installations are not compliant with the latest

code and NSW service installation requirements. Therefore any new developments

and refurbishments of existing buildings will need to be furnished with new

electrical low voltage services, comprising main switchboards, distribution boards,

sub-mains and final circuit cabling, mechanical control panels, control cabling and

final outlets.To ensure that new and refurbished developments meet current code and energy

efficiency requirements, developments should be furnished with new light fixtures

comprising the latest available LED lamp and driver technology available at the time

of design.

5.6 Telecommunications ServicesThe upgrade of existing infrastructure shall also facilitate the connection of class

leading fibre optic infrastructure within each of the development blocks. The

infrastructure shall be capable of providing high speed communications and

integrated building technologies for private tenant services.It is anticipated that any new development on the Harris Street and Harwood sites

will require the demolition of the existing buildings. Therefore, newcommunications building and floor distributors will be incorporated into the spatial

planning of any new developments.The developer will need to establish the incoming fibre lead-in service provider for

each site, as well as the reticulation route and cable pathways.





S T E E N S E N V A R M I N GA new building distributor and fibre lead-in cable route will need to be established

for the retained and (possibly) refurbished heritage building.Conduit provisions are to be provided to facilitate the installation of lead in cabling

by multiple carriers and accommodate future technologies in the form of spare

conduits. Consideration should be given to diverse entry paths where possible to

maximise flexibility and redundancy.Cable paths, communication room space and riser provisions shall be made to

enable fibre-to-premise to be implemented in line with carrier requirements.The communications infrastructure provisions shall be sized to allow for mobile

phone coverage services to be provided within each development block by multiple

carriers; facilitating current 4G technology and Future 50 upgrades.

5.7 Fire Services

5.7.1 Fire Sprinkler SystemThe current fire sprinkler system is reported to be prone to failure and not able to

hold water pressure under test. It is recommended that the Museum system be

replaced with a new wet type system as part of the future development to ensure

long term protection can be assured. The recommended upgrade includes all

pipework, valves and pumps in the current system.The existing plant and equipment within the existing hydraulics compound is

obsolete and is recommended to be replaced with new wet type fire sprinkler

system infrastructure.Given the site is protected by a single system there will be considerable works

involved in separating the proposed lots for future development. Each future lot

shall be provided separate fire sprinkler systems as required by future development

guidelines and the National Construction Code.Staging of the future construction shall consider provision of new fire sprinkler

system infrastructure as necessary.Each new Fire Sprinkler system would have as a minimum a new authority's towns

main connection, pumps and alarm valves. Any future building over 25m effective

requires a water supply tank and secondary pumps as the reliable supply to support

the town's main connection.

5.7.2 Fire Hydrant SystemThe current system, is Ordinance 70 compliant and does not provide adequate

pressure to suit Fire and Rescue NSW fire fighting operations. It is recommended

that a total replacement of this system be undertaken to ensure future system

reliability is ensured. Total replacement of pumps and booster assemblies would

form part of this upgrade.





STEENSEN VAR MINGThe existing plant and equipment within the existing hydraulics compound is

obsolete and is recommended to be replaced with new wet type fire sprinkler

system infrastructure.Given the site is protected by a single system there will be considerable works

involved in separating the proposed lots for future development. Each future lot

shall be provided separate fire hydrant systems as required by future development

guidelines and the National Construction Code.Staging of the future construction shall consider provision of new fire hydrant

system infrastructure as necessary.

5.7.3 Automatic Smoke Detection and Alarm SystemThe current smoke detection and evacuation systems are relatively new and do not

require significant upgrade to ensure ongoing compliance or reliability.Future development on the site will require the current system network to be

broken up and separate infrastructure to be provided to each new lot to achieve

compliance with the National Construction Code.The Powerhouse Museum should create a new Fire Control Centre so the network

connection to other sites can be relocated from the Harwood MFIP and the Museum

system be monitored from that.All other new lots on the site shall be provided new Automatic Smoke Detection and

alarm systems to suit NCC requirements including separate Fire Brigade Monitoring

connections.5.8 Hydraulic Services

5.8.1 Natural GasThe current gas usage at the Powerhouse Museum is limited to a single boiler that

provides steam to a permanent display item and a small system within the Café.

Upgrades to the current system would only be driven by changes to mechanical

system equipment or a change in use of the Museum building itself.The current meter set for the powerhouse building shall be reviewed for capacity

against any future load to determine suitability for retention.The Café gas meter is to be reviewed for suitability for retention once development

planning is established.All new development works are assumed to require a natural gas supply and as such

current buildings such as the Post Office, Harwood Building and the West building

will require new natural gas connections and meter sets.All new lots proposed by the development plan are assumed to require gas and will

be separate new connections.






5.8.2 WaterThe current water supply to the Museum is sufficient unless a change in use for this

building is proposed. If the hydraulics compound is retained in the futuredevelopment then no upgrades are necessary.

The water supply to the Harwood building and Post Office building shall be

reviewed by the future development team against estimated supply requirements

and current meter size and locations.The existing water meters shall be reviewed for suitable capacity and location

against the future development plans.Additional water meters for West building and other new proposed developments

will be required to suit future planning requirements.

5.9 Mechanical Services5.9.1 Basis of New Development for Mechanical

Services ConsiderationsThe new development considered in this report for the mechanical services is a

stand-alone systems serving the heritage buildings of the Ultimo Power Station

building and the Post Office building.The other buildings including the Harwood building and the Powerhouse museum

extension that fronts Harris street are assumed to be demolished and changed from

government ownership to private ownership.The basis of the reconfiguration in this report is for a life expectancy of 15 years, with

an upper limit of 20 years, of the services to be retained, refurbished or installed as

new items for the mechanical services.The reconfigured museum spaces are not considered as special applications that

would require mechanical services with generator backed power supplies. The

future purpose of the museum is considered that of a general purpose rather than

one that would justify generator back mechanical services, such as for a data centre.

5.9.2 Redundancy of SystemsA key consideration for museums is that the systems be configured with adequate

redundancy to allow for outages of equipment. For the central plant this entails all

systems having a degree of redundancy for the working components such as

chillers, pumps and cooling towers.Additional redundancy for items beyond key central items are not considered

justified for museums of this kind. Examples of items that could be accounted for

with additional redundancy are piping, switchboards, valves, AHUs/FCUs and fans.





S T E E N S E N V A R M I N GThis kind of redundancy is only applied to significant facilities like data centres and

strategic military facilities.

5.9.3 Final Use of the Reconfigured SpaceThe final expectations of the revised use for the museum would need to be

assessed to verify if the current AHU and FCU arrangements are suitable. This

report generally discusses the options of reusing the existing systems without

significant changes to AHUs, FCUs, and associated ducting. If more specific controls

are required in specific applications, and potentially humidity controlled, then new or

relocated units would need to be considered if the existing arrangements are not

suitable. It is unknown in the specific data for the AHUs will be available to confirm

alternative usage of the units is viable. Generally, spaces with specific new uses

would justify new AHUs to serve these spaces.

5.9.4Recommended Central Plant ConfigurationFor a replanned museum it is recommended to reconfigure the existing central plant

to provide a new arrangement that will be more robust for the next 15 to 20 years.

The recommended reconfiguration is as follows:Retain the existing operable water cooled chillers and demolish the existing

nchiller that has failed;

Provide a new smaller chiller for low load applications located in the position ofn

the failed chiller. Provide a new pump to suit the new smaller chiller;Replace the existing chilled water pumps, on both the primary and secondary

circuits. Replace the secondary pumps with smaller pumps to match the reducedn

load of the reconfigured museum;Disconnect the existing seawater cooling system from the central plant for the

museum mechanical services systems. Retain the system for future use by othern

developments in the precinct or for future uses of the museum site;Install a new condenser water system. Included in this would be new cooling

towers, pumps and piping connecting to the condensers of the water cooledn

chillers;n Relocate the existing steam boilers to the new museum at Parramatta

Provide a new gas fired heating water system that connects to the existing

heating water system. This is to include new gas fired heating water generators,

npumps, and flues connecting to the existing flues for the relocated steam boilers;

Assess the condition of the existing valves in the systems to be retained andn

replace where in a poor condition.

5.9.5 Estimated Reconfigured Cooling LoadBased on the physical size of the existing chillers, they appear to be in the order of

2MW in capacity each under normal operating conditions. As they appear to be

running less efficient than normal, the total load in summer for the existing museum

would be in the order of 5MW. For a reconfigured smaller museum with potentially

more specific loads, the overall load may be in the order of 3MW. Based on a

Page 48 58 steensenvarming.com


Sustainable Design Sydney ABN 50 001 189 037Electrical Engineering Hong Kong t : -F61 / 02 9967 2200


S T E E N S E N V A R M I N Gprojected future cooling load of 3MW the 3 chillers at 2MW each will provide a spare

capacity of 1 chiller.

5.9.6 Purpose and Size of a New Low Load ChillerIn a reconfigured museum, it would be appropriate to consider a reduced amount of

spaces that would require 24 hours of air conditioning. Also, a reduction in the

amount of dehumidification control would reduce the amount of cooling, and reheat,

of the spaces above that solely for temperature control. The normal operating load

at low season at night may only be in the order of 30kW so a low load chiller with

base load chillers 2MW in size is fully justified.A low load chiller in the order of 300kW is a reasonable allowance at this stage. this

is still relatively large for a minimum load of 30kW so a buffer tank may need to be

considered in any further assessments of a low load chiller.

5.9.7 Water Cooled Packaged Air Condtioning UnitsIf the function of the museum changed to one without 24 hours a day conditioning

of the exhibit areas, a water-cooled system for miscellaneous systems could be

considered. For areas expected to operate 24 hours a day with internal loads such as

communications rooms, condenser water cooled packaged units could be used in

lieu of the chilled water systems.5.9.8 Basis for Replacing the Seawater System with

Cooling TowersWith the expected reduction in the overall heat rejection required from a reduced

scale museum, the maintenance of the existing seawater heat rejection plant is

expected to be unviable.In terms of maintenance costs, the seawater system is difficult to maintain and hence

it will have significant maintenance costs across the next 15 (to 20) years of the life

of a reconfigured museum. As discussed above, a similar size system to the

reconfigured museum costs in the order of $100,000 a year to maintain. The system

with this cost did not have 1km of pipe runs to the harbour either.Maintenance costs for 3 cooling towers, when factoring in chemical treatment as well

as mechanical services, would not be expected to be more than half the costs to

maintain the seawater system.In terms of running costs, both systems are expected to have similar operating

costs. For cooling towers the water consumption, fan energy and pump energy costs

would be similar to the pumping costs for the seawater system. The pumping costs

for the seawater system will be significant with the water needing to be pumped

through the heat exchangers and strainers as well as through the pipes to Darling

Harbour 1km away.





S T E E N S E N V A R M I N GIf cooling towers are used the energy efficiency of the chillers is expected to be

improved. This is expected to be offset through in part by an additional operating

cost of gas for the proposed new gas fired heating water system.The installation costs of the new cooling towers may be similar order to the costs of

refurbishing the seawater system. The seawater system will need new pumps, heat

exchangers, strainers, valves, and other items yet to be fully identified. The costs for

the building works for any new cooling towers would need to be considered in

conjunction with other trades.

5.9.9A Possible Location for New Cooling TowersAs part of the reconfiguration, a new space could be made for new cooling towers to

serve the water-cooled chillers. A possible location is at the southern end of the

Switchhouse gallery. The pipes would then drop down to the tunnel below that

currently connects to the Harwood Building.Layout sketches for this is as shown below for Levels 3 and 4. The sketches account

for the following considerations:

nA total cooling load of 3MW that equates to a heat rejection of 3.9MW;nThe use of vertical towers to limit the floor space used;

Intake and discharge attenuation to account for the noise considerations of then

nearby residential buildings;nRedundancy of at least 1 tower.

EXISTING DUCTING FROM THIS PLANTROOM RECONFIGURED TO SUIT THE NEW COOLING TOWER PLANTROOM

VERTICAL FORCED DRAFT COOLING TOWERS

AIR INTAKE DROPPER FROM LEVEL ABOVE WITH ACOUSTIC LINING

Level 3 - Sketch of a possible cooling tower plantroom location in the south end of the Switch House


ALTERNATIVE ACCESS TO

ROOF TERRACE VIA STAIRS

VERTICAL RISER DUCTS

FROM COOLING TOWERS

WITH ATTENUATORS ON

DISCHARGES THROUGH THE

ROOFDUCTED AIR INTAKE WITH

ACOUSTIC LINING

CONNECTING TO

OPENINGS NV WALL FROM





Level 4 — Sketch of the area on Level 3 that will need to be opened to allow for double

height plantroom for the cooling towersThe photo below shows the end of the Switch House that is the possible location for

the cooling tower plantroom. There is an elevated pedestrian walkway past this end

of the building so there is not expected to be any significant heritage issues from

opening the windows or having roof discharges.The overall height of the cooling towers is expected to be in the order of 6m. This

would include a discharge attenuator in the vertical of the cooling tower. This

accounts for the need for a double height plantroom to accommodate the cooling

towers in this location.Also, if additional water supply is required to cater for the cooling towers then the

existing water meter located below. This could be upgraded and the connecting

pipe to the cooling towers would be relatively short.




New York e : info ©steensenvarming.com

STEENSEN VARMING

End of switchhouse where the cooling tower plantroom could be located. Note the

windows at high level that could be replaced for air intake screens either side of the

corner of the building with the security camera

5.9.10 Valves for Retained SystemsThe valves installed as part of the original installations are at the end of their

working life. A valve replacement process is usually implemented over time to

prevent the valves from failing due to corrosion and other degradation that is usually

of the internal components. Water treatment usually allows for an extended life of

the valves with passivation agents added to the closed systems to prevent corrosion

of primarily ferrous components. Old rusted valves were not seen left around the

plantrooms that are usually an indicator that the valves have been subject to failure

over the life of the system. It is therefore presumed that they may be in reasonable

condition.If 15 years of expected life is the projected life expectancy of the mechanical

systems then removal and inspection of some sample valves would allow an

assessment to be undertaken of the general condition of the valves. If they are seen

to be in reasonable condition then they could be retained and only replaced on a

needs basis over the next 15 years. Alternately, if they are in poor condition then




New York e: info©steensenvarming.com

S T E E N S E N V A R M I N Gthey would be recommended to be replaced as part of the refurbishment works

when retaining the existing components for the reconfigured museum.This would include the isolation valves that isolate the AHUs and FCUs from the

main supply pipes. Any other valves associated with the AHUs and FCUs, such as

drain valves, can be replaced on a needs basis as the units could be isolated and

drained locally to allow this to occur.All motorised valves and actuators are recommended to be replaced for the retained

services in the reconfigured museum. The existing systems are quite old and a

controls refurbishment would normally include these valves to avoid ongoing

problems with defective components.

5.9.11 Replacement Controls SystemThe existing controls system must be replaced if the existing services are to be

retained in any way to serve a reconfigured museum. The new system isrecommended to be powerful system that control all of the mechanical systems as

well as being able to be expanded to interface of control lighting, security, and other

services within the reconfigured museum. The new control system is recommended

to be what is commonly called a Building Management System (BMS).

The new BMS would include all of the following components:New field devices throughout including sensors, valves and actuators, damper

nactuators where used, and any after hours switches and the like;

n All new controls devices that locally control the mechanical system;A new head end and computer for interface with the BMS. From the head end

there would be remote interfacing available and alarms able to be sent to emailsn

or phone numbers where programmed to do so;All new control panels and internal components such as transformers and circuitn

breakers; andAll new wiring for the new BMS. The method of communication would dependn

on the available data network to reduce costs of cabling a separate system.Improved reliability of the new BMS would be recommended to be applied such as

providing a UPS to support the system in any power outages. This would also

prevent the system from being subject to local power surges.

Numerous other improvements would be derived from a new BMS such acentralised timeclock scheduling, remote chilled water temperature set point

adjustment to optimise the chiller efficiencies, and remote monitoring of the system

so faults can be rectified in a timely manner.

5.9.12 Heritage Post Office BuildingThis building will be isolated by the proposed massing plans. Whether this can be

provided with chilled and heating water supplies from the reconfigured central plant

would depend on the considerations of the new developments. If not local air

cooled systems may need to be incorporated in the allowances for space around the

building for future air cooled condensers.






5.10 Vertical TransportationAny refurbishment of the heritage building will need to consider the possible

retention and re-use of the existing lifts, including the glazed feature lift.

5.11 Sustainability Design / ESD

Environmentally Sustainable Design is a key priority for any responsible organisation and design team to embrace. However, in the design of museum spaces, the interpretation of sustainability needs to be placed in the context of the challenges of providing the effective display of the Collection, a comfortable and safe environment for visitors and staff and conditions conducive with Collection preservation and conservation. It is therefore important that some traditional ESD principles are not pursued as the ultimate priority as this will inevitably result in the Gallery being unable to fulfil their duty of care to the collection.

The best approach is to design in an integrated manner to maximise the benefits all elements that are complimentary to the pursuit of providing suitable conditions with a minimal environmental impact.

To minimise the project's environmental impact as well as reducing recurrent costs for operating the facility, the systems should incorporate techniques to minimise energy usage while still providing the optimal physiological and acoustic conditions:

n Environmental (internal)Production of collection conservation and occupant comfort through the control oftemperature, humidity, ventilation, particulates and noise,

n Environmental (external)The achievement, or betterment, of environmental policy requirements for emissions from the building, including the provision of energy and water conservation features where practical and cost effective and

n FlexibilityDecisions regarding designs will be taken in a manner which includes the need forfuture adaptability/flexibility where these are highlighted and cost parameters allow.

The Seawater Cooling System should be rectified and maintained.

Consideration to provision of waste heat to other nearby facilities.






Appendix A - BuildingServices MatrixMain Building Service Item

Location

Observed Condition

CodeCompliance Issues?

Date Installed

Estimated Remaining Life Expectancy - (less than 'x' years)Impact of divestment and selling of part of the site.Spatial plans for the new building are excluded at this stage.

Substations

1. Subterranean chamber substation located below forecourt adjacent brickbuilding.

No at immediate risk of failure, however subterranean substations are no longer permitted by Ausgrid as a part of new building designs.No code compliance issues, however refer to adjacent cell for Ausgrid allowance issues.

1988

10

Substations service multiple facilities located along the Goods Line. Therefore the substation, its equipment and access to it will need to be maintained during any developments.

The above creates significant risk and expense for the construction, mainly ground works, associated with the proposed low rise massing.

0.On grade chamber substation located on Harris Street opposite 1988 museum extension.

Unable to gain access into chamber substations due to Ausgrid ownership rights. Ausgrid representatives have stated that the equipment located within the substation are in good condition.No

Unknown.

Estimated

mid-90's

20

Due to the location of the substation, it is not recommended that this is used as a part of new and refurbished developments.

Electrical Switchboards

1. Located within basement of heritage building. Services powerhouse museum and extensions.

Poor.Condition of equipment is good and has been expertly maintained, but devices are no longer code compliant and available for purchase.Yes

1988

5

Any new and/or refurbished developments will need to allow for new switchboard installations.






2. Located within ground floor of Harwood Building. Services Harwood building.

Poor.Condition of equipment is good and has been expertly maintained, but devices are no longer code compliant and available for purchase.

Yes 1988 7-10 Any new and/or refurbished developments will need to allow for new switchboard installations.

Distribution Boards

Throughout buildings.


Yes 1988 5 New distribution boards, comprising the latest generation of protective devices, will be required as a part of any new and/or refurbished developments.

Motor control panels



Yes 1988 5 New MCPs, comprising the latest generation of protective and control devices, will be required as a part of any new and/or refurbished developments.

Sub-mains cabling


Poor.Many of the main sub-mains cabling comprises MIMS cabling, which has degraded.

Yes 1988 5 New sub-mains cabling required as part of any new and/or refurbished developments.

General lighting and power


Poor. No longer compliant with latest energy (e.g. GreenStar) requirements.

No - but energy efficiency issues

1988 5 New power and lighting (comprising latest LED technology) required.

Security Throughout buildings.

Good. No. Circa.2000

10 New security installations will be required as a part of new and/or refurbished developments.






Seawater heat exchangers and seawater pumps

In basement below the Turbine House

Unable to be inspected internally but would assume to be in poor condition after 30 years of service.

Potentially issues with the EPA for the water temperature being returned to Darling Harbour.

1988 2 The reduced scale of the site make the system unviable with the high maintenance costs associated with these systems.

Water chillers In basement below the Boiler House

1 has failed but the other 3 appear to be in fair condition.

It is not verified if current refrigerant exposure codes are applicable to these existing installations.

Circa.2000

15 A reduced scale of site will allow for more redundancy of the system improving the reliability of the chillers.

Chilled, heating, and condenser water pumps

In basement below the Boiler House and Turbine House

Poor No. 1988 2 Chilled water pumps - No impactHeating water pumps - A revised system is recommended based on new gas fired boilers and pumpsCondenser water pumps - A revised strategy is recommended based on cooling towers in lieu of seawater heat exchangers

Air handling units and fan coil units

Various locations throughout the site. Numerous units are located in the basement near the central plant

Fair Outdoor air intake locations were not verified as being appropriate for current standards as not known to be applicable.

Mainly in1988

15 A reconfigured site may not suit the current AHU and FCU arrangements. New units may be required if the existing systems are unsuitable.

Controls system

Throughout thebuildings.

Very poor No. 1988 0 The control system is in need of replacement and any reconfigurations are recommended to include a new controls system.

Chilled and heating water piping

Various areas throughout the site.

Unable to assess internal conditions but appeared to be in fair condition.

No. Mainly in1988

20 Minimal

Chilled and heating water valves

Various areas throughout the site.

Unable to assess internal conditions but appeared to be

No. Mainly in1988

10 Recommended to be inspected and replaced where required in a reconfigured facility.






in fair

condition.

Ducting and plenums

Throughout thebuildings.Fair

No.

Mainly in1988

15

Steam

boilers

In basement below the Boiler House

Fair

Not investigated as not expected to be retained.1988

15

Expected to be relocated to the new site at Parramatta.

Humidifiers

Associated with the AHUs

Poor

Not investigated as expected to be replaced.1988

2

Recommended to be replaced in a

reconfigured facility.

Natural Gas

Omnibus

Lane

Plantroom

Fair

No

Unknown

10

Not suitably sized for large scale future development. Single meter for museum building. No gas provisions made to Harwood building or Post Office.

Museum

CaféFair

No

Unknown

10

Unlikely to support future development.

Water

Omnibus

Lane

PlantroomFair

No

Unknown

10


Post OfficeFairNoUnknown

10Unlikely to support future development.

Harwood StreetFair

No

Unknown

10


Fire sprinkler system

Omnibus

Lane

Plantroom

(serves

complete

site)Poor

Yes

1997

5


Fire hydrant system

Harwood

Building

(serves

complete

site)Poor

Yes

1997

5


Automatic

smoke

detection

and alarm

system


Yes

Unknown

5-Oct



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