Risk Management for the Mengkuang Dam Upgrading and Enlargement Project

  • C. H. KhorEmail author
  • Abu H. Shamsuddin
Conference paper
Part of the Water Resources Development and Management book series (WRDM)


This paper describes the risk management plan implemented for a large dam project which involved raising the existing dam and construction of a new dam. Construction of this dam upgrading and enlargement project was exposed to serious risks on safety of existing dam, risk of delay, cost overrun and contractual claim. A three tiered approach in risk assessment and risk mitigation was implemented. A quantitative risk analysis on risk of piping failure of the existing dam due to foundation excavation works was conducted to aid in the decision making process for resolving the construction risk encountered. The risk management of the project has created opportunities for design optimization. The integration of risk management and value engineering in the project has resulted in cost saving of over RM 150 million. The framework of the risk management plan and process involved in risk identification, risk assessment, mitigating measure options evaluation, risk control and the issues resolved are described.


Earthfill dam Risk control Risk management Event tree 



The authors acknowledge the project team members of Bahagian Bekalan Air, Angkasa Consulting Services Sdn. Bhd. and China International Water & Electric Corp. (M) Sdn. Bhd. who contributed directly or indirectly to the development and execution of the project risk management plan.


  1. Canadian Dam Association: Dam safety guidelines 2007, 2013th edn. CDA, Canada (2007)Google Scholar
  2. Australian National Committee on Large Dams: Guidelines on Risk Assessment. ANCOLD, Australia (2003)Google Scholar
  3. Foster, M.A., Fell, R., Davidson, R., Wan, C.F.: Estimation of the Probabilities of Failure of Embankment Dams by Internal Erosion and Piping Using Event Tree Methods. ANCOLD, Australia (2002)Google Scholar
  4. Wan, C.F., Fell, R.: Investigation of rate of erosion of soils in embankment dams. J. Geotech. Geoenviron. Eng. ASCE 130(4), 373–380 (2004)CrossRefGoogle Scholar
  5. Fell, R., et. al.: A unified method for estimating probabilities of failure of embankment dams by internal erosion and piping. UNICIV, Australia (2008)Google Scholar
  6. Khor, C.H., Woo, H.K.: An Investigation of Crushed Rock as Filters for A Dam Embankment. ASCE Geotechnical Division, USA (1989)CrossRefGoogle Scholar
  7. Khor, C.H.: Crushed rock filters and leakage control in embankment dams. J. Instit. Eng. Malays. (IEM), Bil. 50 (1992)Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Angkasa Consulting Services Sdn. Bhd.Subang JayaMalaysia
  2. 2.Bahagian Bekalan Air, KATSPutrajayaMalaysia

Personalised recommendations