dc.contributor.advisor | Onshus, Tor Engebret | nb_NO |
dc.contributor.author | Johansen, Anders Freddy | nb_NO |
dc.date.accessioned | 2014-12-19T14:03:33Z | |
dc.date.available | 2014-12-19T14:03:33Z | |
dc.date.created | 2011-08-15 | nb_NO |
dc.date.issued | 2011 | nb_NO |
dc.identifier | 434334 | nb_NO |
dc.identifier | ntnudaim:5953 | nb_NO |
dc.identifier.uri | http://hdl.handle.net/11250/260331 | |
dc.description.abstract | The 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.language | eng | nb_NO |
dc.publisher | Institutt for teknisk kybernetikk | nb_NO |
dc.subject | ntnudaim:5953 | no_NO |
dc.subject | MTTK teknisk kybernetikk | no_NO |
dc.subject | Reguleringsteknikk | no_NO |
dc.title | Inhibits and Overrides: Applications Seen in a Safety Perspective | nb_NO |
dc.type | Master thesis | nb_NO |
dc.source.pagenumber | 95 | nb_NO |
dc.contributor.department | Norges teknisk-naturvitenskapelige universitet, Fakultet for informasjonsteknologi, matematikk og elektroteknikk, Institutt for teknisk kybernetikk | nb_NO |