ABSTRACT
A risk management plan for a tunnel project include the following key steps and processes: preparation of contractual documentation; risk workshops; preparation of risk register with preliminary risk allocation; regular updating of risk register for each stage of design, and; regular risk meetings during construction with further updating of the risk register. The initial assessment of tunnel construction risk is achieved by a qualitative risk assessment and the preparation of a risk register. The risk score is presented with a colour coded table with elevated risks shown in orange and red, and low risks shown in yellow and light green. The risk response or action item for mitigation should also include the risk action plan and date to be completed. Quantitative risk assessments are a simple extension of a qualitative risk assessment and include the addition of quantified consequences in terms of construction costs to allow for a total estimate of the cost impact of construction risks to the project.
