management of tunnels on the zagreb – macelj motorway ... - Index of

92Rud.-geol.-naft. zb., Vol. 25, 2012.Z. Deković, I. Pili: Management <strong>of</strong> <strong>tunnels</strong>...Figure 12. Tunnel equipment systems parameters optimisation cycleSlika 12. Proces optimizacije parametara tunelske opremeFor each individual tunnel equipment system, aswell as the comprehensive system as a whole, followingphases <strong>of</strong> optimisation comprised in optimisation cycle asshown in figure 12 are carried out: observation <strong>of</strong> the tunnelequipment systems throughout system monitoring andsupervision, regular inspections and routine maintenance;assessment <strong>of</strong> the tunnel equipment systems conditiontrough Key Performance Indicators, inspection and maintenanceanalyses; work identification; planning, schedulingand execution <strong>of</strong> work, follow up. Optimisation cyclerepresents systematic approach to the operation and maintenance<strong>of</strong> the tunnel equipment systems that is foundationfor accomplished <strong>of</strong> the high safety level <strong>of</strong> tunnelconditions and functionality <strong>of</strong> tunnel equipment systems.4. ConclusionIn terms <strong>of</strong> business continuity aspect, undisturbedtraffic throughout Zagreb – Macelj motorway, <strong>tunnels</strong> arethe most demanding facilities for maintaining appropriatesafety and operational level in order to rich continuousavailability. Tunnels operation is complex and demandactivity that requires the systematic approach to undisturbedand safe traffic flow through the <strong>tunnels</strong>. As result <strong>of</strong>the systematic approach stems the optimised operationaltunnel system that ensures maximum efficiency in tunneloperation and maintenance. Maintenance <strong>of</strong> <strong>tunnels</strong>, asone <strong>of</strong> operational tools, and in particular the maintenance<strong>of</strong> tunnel equipment systems, requires a high quality <strong>of</strong>services in terms <strong>of</strong> response time in case <strong>of</strong> malfunction,undesirable event or accident in a tunnel. Active monitoring<strong>of</strong> each individual system and <strong>of</strong> the tunnel equipmentsystem as a whole throughout Key Performance Indicatorsrepresents basis for optimised operation <strong>of</strong> the tunnelequipment systems. Optimised operational tunnel systemis representing answer on identified and analysed functionalrisks in tunnel operation. The Concessionaire andthe Operator are dedicated to strengthening the efficiencyand permanently improving the level <strong>of</strong> services providedto the motorway users by keeping up with the latest technologydevelopments and the best operational practices.5. ReferencesDeković, Z., Cviljak, B., (2011): Fundamental Characteristics <strong>of</strong> Tunnellingand Tunnel Maintenance on the Zagreb-Macelj Motorway,Proceedings <strong>of</strong> the 1 st International Congress on Tunnels and UndergroundStructures in South-East Europe Using underground space,Dubrovnik, Croatia, pp. 78-79Deković, Z., Pili, I., (2011): Optimisation <strong>of</strong> the operation and the maintenance<strong>of</strong> the tunnel equipment systems on the Zagreb-Macelj motorway,Proceedings <strong>of</strong> the 10 th International Symposium on TunnelConstruction and Underground Structures, Ljubljana, Slovenia, pp.140-145Duddeck, H., (1987): Risk Assessment and Risk Sharing in Tunneling,Tunnelling and Underground Space Technology, Vol. 2. No. 3, pp.315 – 317Mlinarević, I., Klarić, S., (2007): Standard redovnog održavanja autocesta1, Hrvatske autoceste, Zagreb, pp. 81-86PIARC (2005): Good Practice for the Operation and Maintenance <strong>of</strong>Road Tunnels, PIARC Committee on Road Tunnel Operation (C5),pp. 47-49Pili, I., Skiba, H., (2008): Standard operating procedure defect reportand maintenance response and disaster recovery procedure <strong>of</strong>equipment maintenance <strong>of</strong> Zagreb – Macelj motorway, Egis RoadOperation Croatia Ltd, Zagreb, Croatia, pp. 6-9