Service Interruption Minimizing Integrated Maintenance Scenario
At a general level, the first maintenance strategy focuses on the building as the key system element. The main objective of this strategy is to reduce the access restrictions caused by maintenance activities of the different subsystems. For this purpose, a general planning logic based on building accessibility was developed.
Within this strategy, maintenance activities were conceptually classified according to their expected impact on building access and system operation [11,12]. Activities leading to full access restriction (High impact), partial access limitation (Low impact), or no access impact were distinguished in order to support coordinated planning at the system level. Activities that fully or partially restrict access were, as far as possible, grouped within the same time periods. This allows maintenance planning to be evaluated from a system level perspective considering perceived service availability.
The maintenance strategy defined at this stage does not aim to produce a final maintenance schedule or to perform numerical optimization. Instead, it provides the engineering based planning framework for the scenario based multi objective optimization. The optimization criteria, such as minimum spacing between interventions and reduced interruption days, are therefore applied within the boundaries defined by this strategy and should not be confused with the strategy itself.
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