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Istanbul Strait Road Tube Crossing Project Uses Good Practices to Manage Risks

Istanbul Strait Road Tube Crossing Project Uses Good Practices to Manage Risks


N. Munfah / S. Zlatanic / M. Ozturk

The iconic Istanbul Strait Road Tube Crossing Project (Eurasia Tunnel) includes 2.1 miles (3.4 km) of a bored double deck tunnel under the Bosphorus Strait and 0.62 mile (1 km) of twin NATM tunnels on the Asian side. The region’s variable geology, hydrology and propensity for seismic activity, combined with high water pressure and large-diameter/double-deck tunnel configuration, make the Eurasia Tunnel one of today’s most challenging and complex projects under construction. The project is coupled with numerous technical challenges with potential for high construction and commercial risks. In order to minimize the project risk exposure and meet Employer’s Requirements, the contractor established a system to control the risks during all phases of the project execution, including conceptual planning, final design, construction, and facility operation. An important component of such system is to assign an Independent Design Verifier (IDV), who is to ensure that the project’s major design risks are addressed by the Designer through design deliverables in accordance with planned construction Programme (Schedule). In light of the project’s accelerated schedule, IDV role is critical in reviewing the design for correctness, identifying potential risk issues, verifying corrective actions, and minimizing potential that any critical issue may “fall through the cracks.”

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Year 2015
City Dubrovnik
Country Croatia