SemView system for jack-up rigs Jack-up Rack Phase Difference (RPD) monitoring system measuring the extension on each of the leg chords at each leg. See figure below. This is achieved through the use of encoders or other sources, which provide a value to the software module within the SemView system. From these values the total leg cord extensions and RPD values are calculated. These calculated values are then displayed as part of a SemView operator station screen or picture. Further, the software module displays the leg inclination angle and direction that are derived from the RPD values together with physical leg constants. All values are constantly displayed to give the operator an overview of the system during jacking. Should a user defined RPD limit be exceeded an alarm will occur and the actual leg and chord causing the alarm will be shown in a red colour. The RPD monitoring software continuously monitors and logs calculated data as well as events and alarms in the SemView system database system. From the logged values historical trend curves, fault logs and other reports or logs can be generated for display and printing. System components A complete SemView RPD monitoring system includes a SemView central system with application module, encoders (if applicable) and SemView operator station. Further, the SemView RPD monitoring software module can be integrated into an existing SemView system (generation 2 and up) in which case the SemView central system and operator station would not be required. The RPD monitoring system has the following facilities: • A visual overview screen, continuously showing the actual RPD values for each leg together with inclination angle, direction and leg extension. • Visual and acoustic alarms when the predefined RPD alarm limit is exceeded with indication of which leg and chord that have caused the alarm. • Alarm for system failure, encoder failure, etc. • Continuously logging of events and alarms. • Historical trend facility. • User set-up facility for alarm levels and system parameters. • All extensions and RPD values are automatically on hold upon power loss. SEMCO MARITIME reserves the right to make changes without prior notice. ©2019, SEMCO MARITIME and the SEMCO MARITIME Group of Companies. Dropbox\Marketing\Product flyers\SemView\subh 110319 For further information: www.semcomaritime.com
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