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Dams Safety Committee

New South Wales Government

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Amendments List for DSC Publications

 

      

Technical Information Sheets

Policy or major procedural changes are approved by the Committee and are dated (date of publication) when the decision made.  Minor corrections or clarifications don’t result in a change of “date of publication”, only an alphabetical letter will be added.

 
Major Changes
Date of Publication
DSC01
  • Updated references to ANCOLD Guidelines.
  • "Hazard Rating" replaced by "Consequence Category".
  • Reporting requirements updated to new Consequence Categories.
April 2005
  • Reworded to include no-coal mining.
April 1998
DSC02  
  • Introduction of risk management principles.
  • Consequence Category replacing Hazard Rating.
April 2005
  • Section 2.2 "Mining" re-written. Section now clarifies that the Committee is only interested in mining damage that relates to the safety of the dam.

August 1999

 
  • Re-worded to include non-coal mining.
April 1998
DSC03
  • Revised mining terminology to represent current usage.
  • Revised flood terminology to reflect current usage.
  • Minor rewording only.
April 1998
DSC05
  • Updating new Departments and Authorities.
  • Updating importance of negligence laws.
August 1996 (a)
DSC06
  • Information Sheet booklet has not been updated since October 1996. There is a more up-to-date list in the Annual Report.
August 2000
DSC11

An interim policy which replaces the 1992 policy and includes:

  • Risk-based flood safety approach and adopts ANCOLD "Flood Capacity" guidelines, with qualifications.
  • Use of incremental consequences.
  • Need for community consultation.
  • Consideration of construction flood risks.
June 2002
  • The Consequence Categories were updated to bring them in line with DSC13.
August 1992 (a)
DSC12
  • Need for dam operator training.
  • New protocols for emergency notification.
  • Consideration of telemetered seepage monitoring.
April 2005
  • Note has been added referring to DSC12-1, an addendum to DSC12.
April 2003
DSC12-1
  • Updated definitions, authorities.

March 2006

  • Addendum to DSC12 to explain emergency contact protocols.
April 2003
DSC13
  • Evaluation of Consequences is to be "Worst Case" scenario.
March 2002 (b)
DSC14
  • Additional information assistance to dam owners.
  • Consequence Category replaces Hazard Rating.
April 2005
  • Outlined purpose and expanded details of information required.
August 2000
DSC15
  • Adding electronic reporting.
  • General update of references.
January 2003 (a)
  • Change D15 form within DSC15.
  • Replace "hazard rating" or "hazard" with "Consequence Category".
  • Add clause on Security Measures - 6 (c).
  • Change "seismic" to "earthquake".
January 2003
  • Checklist for owners and consultants preparing Type 1 and Type 2 Surveillance Reports has been added.
August 2000
  • Rewording and more detailed.
July 1998
DSC16 
  • Updated ANCOLD References.
  • Consequence Category replaces Hazard Rating.
February 2000 (c)
  • Updated earthquake events effecting dams.
  • Include Reference.
February 2000 (b)
  • Title has changed.
  • Interim Guidelines replaced with final guidelines relating to ANCOLD "Seismic Guidelines".
February 2000 (a)
DSC17 
  • Consequence Category replaces Hazard Rating.
  • Need for automatic telemetered monitoring to provide maximum emegency warning.
April 2005
  • Update sections in line with current requirements.
  • Added Purpose Section.
August 2000
  • Re-worded and more detailded.
July 1998
DSC18 
  • Adding Design Submission Checklist and reference.
April 2005
  • Original version
June 2003
DSC18-1
  • New. It's a Design Submission Checklist.
April 2005
DSC19
  • Original version.
November 2005
DSC32
  • Reference to DSC35.
  • Includes non-coal mining as well as coal mining.
  • Figure 1 (flow chart) clarified.
June 1998
DSC33
  • Includes reference to DSC35.
  • Includes non-coal mining as well as coal mining.
  • Clarification that mining near the embankment of ash & tailings dams is controlled.
  • Amended date of Reynolds Inquiry Report.
June 1998
DSC34 
  • Added Section 5.4 which refers to DSC35 for further information on contingency plans for mining under stored waters.
August 2000
  • New section 5.3 added: "Repair of mining induced damage to Prescribed Dams". This section states the Committee's policy that when there is potential for proposed mining to damage a dam the mining company and dam owner must come to an agreement regarding the repair of the dam prior to the commencement of mining.
August 1999
  • Reference to DSC35.
  • Includes non-coal mining as well as coal.
  • Notes water monitoring may be an indicator of strata performance.
  • Removes Annexure D (will be available separately).
June 1998
DSC35
  • Original Version.
June 1998

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Data Forms

 

 
Major Changes
Date of Publication
 D1
  • Request Sunny Day & Flood Consequence Categories rather than generic Consequence Category to align with DSC13.
  • Request more information on material stored in dam.
  • Provide more guidance on type of dam.
June 2006

  • Addition of "Very Low" Consequence Category to Section II.
August 2002
  • Minor re-wording regarding:
    • Request for material stored
    • Request for spillway type
    • Request for details of materials stored and its toxicity/salinity.
June 1999
D5
  • Explanation of which dams require a Type 3 Surveillance Report.
  • Request for description of any sink holes, piping & movement in embankment dams.
  • Request for frequency of routine inspections conducted by owner.
  • Request for information on whether inspection personnel are trained.
  • Request for recommendations necessary to make dam safe.
  • More explicit request for photos, drawings, advice on documentation availability.
April 2006
D8 Based on experience gained during the implementation the form has been modified so as to:
  • Ensure that the user writes the name of the dam on the form
  • Request the user provide the name and address of the landowner if they do not own the land
  • Repeat the name of the organisation on the official correspondence name
  • Request that only one "Attention" of person is identified
  • Request that persons not be marked both as "Attention of" and "cc".

June 2002
  • New Form: Dam Owners Address Form
August 2001
D9
  • The title "Construction Certificate" was changed to "Dam Construction Certificate" to avoid confusion with the term used in the EPA Act.
March 2006
D15
  • Added request to comment on compliance with storage level monitoring requirements in DSC12.
 November 2006
  • Updated electronic reporting
January 2003 (a)
  • Change “Hazard Rating” to Consequence Category”
  • Add “piping” to Condition of dam
  • Add “Statement on security measures”
  • Add “deformation surveys” to Comment on the instrumentation.
January 2003
  • Checklist for owners and consultants preparing Type 1 and Type 2 Surveillance Reports has been created.
August 2000
D19
  • New Form: "Tailings Dam - Intermediate Report Requirements".
November 2005

 

 

Attachments

 
Major Changes
Date of Publication
Annexure A
  • Added Mining Leasing Conditions
 June 2002
Annexure D
  • Updated Standard Mining Application Conditions
 April 2002
  • New condition 15 added.  This requires a colliery to satisfy the Committee that the dam owner will repair the dam if it is damaged by mining.
 August 1999

 

 

Updated 29 April 2007

 

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