Page 4560 - Week 12 - Thursday, 26 October 2017
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|
Inspection Type |
Googong Dam |
Bendora, Corin & Cotter Dams |
Lower Molonglo Storage Dam |
|
Dam Consequence (Hazard) Category | |||
|
Extreme |
High |
Low | |
|
Comprehensive Surveillance and Reporting |
Five yearly |
Five yearly |
Not specified |
|
Safety Reviews |
15 yearly |
15 yearly |
15 – 20 yearly |
|
Independent Peer Reviewer report on the Safety Review |
Prior to acceptance of a Safety Review by the Utilities Technical Regulator | ||
|
Independent audit of dam owner’s surveillance program |
10 yearly – This is an audit of the type and frequency of monitoring and inspections conducted to ensure the continuing appropriateness of dam monitoring and inspection programs and the adequacy of surveillance evaluation and reporting. | ||
(4) Surveillance activities have most recently been completed as noted in Table 2 below.
Table 2: Date of most recent audits
|
Inspection Type |
Bendora Dam |
Corin |
Googong Dam |
Lower Molonglo Storage Dam |
|
Routine Visual inspections |
Conducted at the frequency required by Table 1 above | |||
|
Intermediate Inspections and Reporting |
Conducted at the frequency required by Table 1 above | |||
|
Comprehensive Surveillance and Reporting |
July 2017 |
April 2017 |
May 2014 |
June 2017 |
|
Safety Reviews |
Supporting studies have been completed. However Icon Water has not completed formal Safety Reviews for these four dams. | |||
|
Independent Peer Reviewer report on the Safety Review |
Not completed | |||
|
Independent audit of dam owner’s surveillance program |
June 2015 | |||
Icon Water is working towards compliance with current regulations. In this respect Icon Water has confirmed that it has engaged experts in the field of dam design, construction and safety to complete Dam Safety Reviews and the Independent Peer Reviewer’s Reports. Icon Water has advised that these will all be complete by December 2018.
Cotter Dam was commissioned in 2013/14. The designer’s Construction Report and Independent Peer Reviewer’s Report on the construction report confirmed that the dam was safe at the time it was commissioned. A further Safety Review is not needed until approximately 2028/29.
(5) As required by the ACT Dam Safety Code 2014, Icon Water is responsible for the program of surveillance needed to demonstrate continuing safety of its dams.
(6) Icon Water conducts routine inspection using its own staff. However it engages consultants that are recognised experts in the field of dam design, construction and safety to complete Dam Safety Reviews and the Independent Peer Reviewer’s Reports.
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