NewsA 900 MHz coverage for the access tunnel of the Gouvaes power stationDate: 04/09/2017
The Gouvaes hydro-electric project includes the exploratory tunnel and the access to the sub-cavity of the hydroelectric power station with a range section of 8.0m and a variable height from 8 to 10m. Within the tunnel, any radio communication is inefficient because the environment is harsh and confined. Consequently, the workers are isolated and they cannot communicate with each other if a problem occurs. The operator, who has to follow the progress of the works and to ensure the safety of the staff, wants to implement a radio communication plan to:
The exploitation of the part of this tunnel includes, on the one hand, the safety of the involved staff and on the other hand, the need for information exchange between workers. Therefore, it is necessary to implement effective and reliable means of communication in order to establish a link between the persons located inside and outside.Despite environmental constraints, SELECOM has been able to provide a system from the Optirep range deployed in a scalable and remotely manageable version. The main unit is integrated into a 19” bay located in a hut outside the tunnel. As for three remote repeaters (2 high power and 1 Medium power), they are installed inside the tunnel. The installed system, the Optirep Singleband 900MHz, allows workers, when they are inside the tunnel, to receive or exchange information each other or with entities located outside the tunnel by using radio links. This durable solution will evolve to the 800MHz band with a service extension to the other plant installations with the main operators MEO, NOS and VODAFONE.
   
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