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south‐north traffic (east deck) showed a more worrying state of conservation than the engineering structure that includes the north‐south traffic (west deck). Additionally, high‐grade anomalies found on site on the support devices, namely accentuated corrosion and abnormal displacements in some of them, were the main reasons for this work.
Highlighting the high level of complexity, both in terms of adverse access to
the work fronts, and in the work to
be implemented, sequential surveys
were carried out through various sets
of pumps and hydraulic jacks, with capacities of 100, 250 and 400 metric tons, depending on the locations to
be worked on, seeking to enable the replacement of all the east deck’s support
HIGH-INTENSITY FLASHING LIGHTS RTIL System
devices, which were in a more advanced stage of deterioration (these were pot‐ bearing devices, with a total of 78 units). In the west deck, the work was carried out using the same means of access and elevation, with 42 elastomeric supports being replaced and 36 units being repaired, in cases where their state of repair met the minimum admissibility criteria, i.e., that they still performed the function for which they were designed. After this work, the functionality and proper operation of the structure will be re‐established.
The works are expected to take seven months and despite their intensity
and duration, all measures have been taken to ensure that road traffic is never restricted.
PORTUGAL
RTIL SYSTEM
IN HORTA AIRPORT
Mota-Engil installs
air navigation aid system.
The Electromechanics unit of Mota‐Engil Engenharia e Construção was responsible for the supply and installation of an RTIL system (Runway Threshold Identification Lights) in Horta Airport, in the Azores, for ANA
– Aeroportos de Portugal, SA.
This system is designed to support air navigation during landing in conditions of low or very low visibility. The equipment is installed in a way that allows the pilots to identify the ends
of the runway through high‐intensity flashing lights, thus enabling positive orientation in relation to the centre
of the track.
POST-WORK SUPPORT
Cávado Bridge
The works included all connections
and the configuration of the control and signalling cables in the Runway Control System, the installation of recessed and raised RTIL and the installation of RTIL master and slave panels.
Once the installation was completed, all the checks, tests and trials were carried out to ensure the correct response of the implemented system.
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