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dc.contributor.advisorOnshus, Tor Engebretnb_NO
dc.contributor.authorJohansen, Anders Freddynb_NO
dc.date.accessioned2014-12-19T14:03:33Z
dc.date.available2014-12-19T14:03:33Z
dc.date.created2011-08-15nb_NO
dc.date.issued2011nb_NO
dc.identifier434334nb_NO
dc.identifierntnudaim:5953nb_NO
dc.identifier.urihttp://hdl.handle.net/11250/260331
dc.description.abstractThe main purpose of this thesis has been to identify the general usage of the applications textit{inhibit} and textit{override} for a collection of installations operated by Statoil ASA. The applications are provided by a Safety and Automation System (SAS) that performs monitoring, control and safeguarding of the plant and its process. Logs that keep track of the SAS operator's actions and other facility-related events have been received from each installation, and regarded with respect to:* the general evolvement and trend of the application usage* instances of inhibits/overrides of long-term character* redundant signals that are inhibited/overridden simultaneously* critical time periods that exhibit high activity* tags that are frequently involved in the application usageThe results that were obtained for each above-mentioned point made it possible to give a stetement of how the installations are controlled through utilization of the safety-impairing, but useful applications.nb_NO
dc.languageengnb_NO
dc.publisherInstitutt for teknisk kybernetikknb_NO
dc.subjectntnudaim:5953no_NO
dc.subjectMTTK teknisk kybernetikkno_NO
dc.subjectReguleringsteknikkno_NO
dc.titleInhibits and Overrides: Applications Seen in a Safety Perspectivenb_NO
dc.typeMaster thesisnb_NO
dc.source.pagenumber95nb_NO
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for teknisk kybernetikknb_NO


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