Costa Nera Tunnel in Chile
Tunnel safety in Santiago de Chile

Two relief road tunnels in the Chilean capital Santiago de Chile are being protected from fire thanks to Securiton's proven SecuriSens TSC 515 temperature sensor cable. It was chosen in the face of stiff competition from well-known rivals.

Securiton's involvement in the large Costanera Norte tunnel project was down to the good offices of its partner Eurocomercial. The tunnels are located in Santiago de Chile which, including the suburbs, is home to more than 6 million people. This means that some 40 per cent of all Chileans live in this region. The city is the uncontested political and commercial heart of the country – which made it all the more important that Securiton should win this contract. In the final analysis, the deal was clinched as a result of the company's expertise, negotiating skills and powers of persuasion.

Relief for millions

The Costanera Norte road project consists of a major 33 km relief road that cuts straight through the Chilean capital. A particular concern of the authorities was safety – in the tunnels especially. Securiton's involvement revolved around the pair of tunnels, which are protected with SecuriSens TSC 515 temperature sensor cable. The Los Saldes tunnel comprises two bores, 1272 and 1760 metres in length. Each bore of the Vivaceta tunnel is just under 4 km long and the tunnel runs under the River Mapotcho at a given point. The road relief will do much to ease Santiago de Chile's congestion problems. The four daylight cut-outs in the Los Saldes tunnel presented Securiton with a particular challenge when it came to installing the TSC 515. These 140 metre-long grating-covered apertures partly replace the roof, allowing drivers to see out of the tunnel. Securiton's solution was to deploy special CCA cable in those areas.

Successful tests

Before final installation, every component of the SecuriSens TSC 515 temperature sensor cable was tested to check for any damage the cable might have sustained during transportation. The Chile's Ministry of Public Works also conducted a real-world fire test to ascertain the cable's response behaviour. The TSC 515 passed with flying colours: the CTP 515 cable terminal processors forwarded data (temperature fluctuations, alarm and fault conditions, etc.) from the cable's sensors to the control centre, which signalled a successful conclusion to the customer's acceptance test. The tunnels, incorporating 11.5 km of SecuriSens TSC 515 cable, were officially opened in mid-April 2005. Successful realisation of this South American project was of key importance for Securiton as the scheme is the focus of international interest in the industry. The SecuriSens TSC 515 temperature sensor cable has demonstrated its excellent reliability all over again.

Tried and proven: tunnels in Chile's capital city Santiago de Chile are protected from fire thanks to SecuriSens TSC 515 temperature sensor cable.

Tricky: bridging the grating-covered cut-outs in the tunnel presented quite a challenge. Special CCA cable was deployed in those areas.

Utilized products:
[SecuriSens TSC 515]

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