The project in brief

The cable tunnel between Tuas Terminal Building and Pioneer Terminal Building is an essentially straight undersea cable tunnel with no further deviations throughout the 2.1 km tunnel with 2 bores except the inclusion of three vertical tunnel shafts. Each tunnel bore has 4 sets of cables which are fire-rated, oil-filled, sand packed and below the walkway.

Most of the tunnel is 2.3 m in height with the cables in 0.7 m depth of sand packed area. Each tunnel bore is approximately 5 m wide.

Why was a VID Fire-Kill solution chosen?

The customer, SPPG Singapore, chose a VID Fire-Kill solution because of its cost effectiveness in actual system cost, assembly, and maintenance, and, not least, the technical properties proven by an actual live fire test.

Some specifics

• Tunnel Type: Cable tunnel
• Tunnel Length: 2100 m
• Tunnel Height: 2.3 m
• Installation Year: 2017

New Low Pressure Watermist System and Linear Heat Detection System were installed in existing cable tunnel and vertical shafts.

Products used for this case

Low Pressure Watermist Tunnel Fire Protection System


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