❓ Mr. Kobelke asks about the construction and upgrade works to the existing water supply scheme to cope with the additional desalinated water from the Southern Seawater Desalination Plant. The answer details the works, outcomes, completion dates, costs, and expenditure to date for three components.
AnsweredQoN 6486Legislative Assembly
QuestionView source ↗
(1) What are the various components of the major construction and upgrade works to the existing water supply scheme which have or are being undertaken to cope with the additional volume of desalinated water being provided from the Southern Seawater Desalination Plant (SSDP)?
(2) For each works component, what is the:
(a) description of the works;
(b) outcome to be delivered by it;
(c) actual or anticipated date of completion;
(d) anticipated full cost; and
(e) expenditure to date?
(2) For each works component, what is the:
(a) description of the works;
(b) outcome to be delivered by it;
(c) actual or anticipated date of completion;
(d) anticipated full cost; and
(e) expenditure to date?
AnswerView source ↗
Answered
29 November 2011
Responded by
Minister for Water
Response time
28 days
(1) The major construction and upgrade works to the existing Integrated Water Supply Scheme (IWSS) which are being undertaken to cope with the additional 50 gigalitre (GL) per annum of desalinated water from the Southern Seawater Desalination Plant (SSDP) are listed below.
i. Construction of an additional 32 megalitre (ML) summit tank at the Harvey Summit Tank site.
ii. Construction of a 26.9 kilometre duplication of the Stirling Trunk Main.
iii. Upgrade of the Ravenswood Pump Station.
(2) For the each works components above:
(a) Description of the works:
i. Construction of a 32 ML post-tensioned reinforced concrete tank with a diameter of 56 metres and a height of 14 metres together with all associated earthworks and pipework to connect into the existing IWSS.
ii. Construction of 26.9 kilometres of a 1.4 metre diameter mild steel cement mortar lined trunk main adjacent to the existing Stirling Trunk Main.
iii. Upgrade the transfer capacity of the existing Ravenswood Pump Station from 285 ML per day to 330 ML per day.
(b) Outcome to be delivered by it:
i. To provide 32 ML of additional potable water storage for the IWSS.
ii. Increase the hydraulic capacity of the Stirling Trunk Main to allow the SSDP to operate at 100 GL per annum production.
iii. Increase the transfer capacity of the Ravenswood Pump Station to 330 ML per day to allow the increased production from the SSDP to be pumped northwards in the IWSS.
(c) Anticipated date of completion:
i. 31 December 2012.
ii. 31 December 2012.
iii. 31 December 2012.
(d) Anticipated full cost:
i. Estimated $11 million - subject to final geotechnical investigations and market bids.
ii. Estimated $60 million - subject to final geotechnical investigations and market bids.
iii. Estimated $9 million - subject to market bids.
(e) Expenditure to date:
i. $0.3 million
ii. $1.6 million
iii. $0.23 million
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i. Construction of an additional 32 megalitre (ML) summit tank at the Harvey Summit Tank site.
ii. Construction of a 26.9 kilometre duplication of the Stirling Trunk Main.
iii. Upgrade of the Ravenswood Pump Station.
(2) For the each works components above:
(a) Description of the works:
i. Construction of a 32 ML post-tensioned reinforced concrete tank with a diameter of 56 metres and a height of 14 metres together with all associated earthworks and pipework to connect into the existing IWSS.
ii. Construction of 26.9 kilometres of a 1.4 metre diameter mild steel cement mortar lined trunk main adjacent to the existing Stirling Trunk Main.
iii. Upgrade the transfer capacity of the existing Ravenswood Pump Station from 285 ML per day to 330 ML per day.
(b) Outcome to be delivered by it:
i. To provide 32 ML of additional potable water storage for the IWSS.
ii. Increase the hydraulic capacity of the Stirling Trunk Main to allow the SSDP to operate at 100 GL per annum production.
iii. Increase the transfer capacity of the Ravenswood Pump Station to 330 ML per day to allow the increased production from the SSDP to be pumped northwards in the IWSS.
(c) Anticipated date of completion:
i. 31 December 2012.
ii. 31 December 2012.
iii. 31 December 2012.
(d) Anticipated full cost:
i. Estimated $11 million - subject to final geotechnical investigations and market bids.
ii. Estimated $60 million - subject to final geotechnical investigations and market bids.
iii. Estimated $9 million - subject to market bids.
(e) Expenditure to date:
i. $0.3 million
ii. $1.6 million
iii. $0.23 million
Notice: This document is created or edited using unregistered or evaluation copy of rtLib valid for testing or development purposes only. To use it for productive or any other purposes please register it. You may purchase the license on
http://www.rtlib.com
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