83 of 124  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 8: Electrical Works  Software will support full screen, live camera video images and video viewing from disk  (MPEG,AVI) simultaneously without any interruption. Screen window refresh speeds will not be  influenced from this. In the event that communication with certain I/O tag is disconnected, software will send a visual  warning to location where these data are displayed regarding that value is not valid. Software should be designed such that changes can be made in graphs while system is running. It  should not be necessary to close system for making changes. There should be Active X in operator interface software and software should allow implementing  Active X objects. Operator Interface Software will interact with ActiveX objects by following  manners.  Changing properties of Active X objects dynamically over tag of field device.  Changing dynamically by Operator Interface software high level language.  Triggering activities in Operator interface software by Active X object accordingly with events of  ActiveX object.  Ability to read ActiveX ratio values by Operator Interface Software. User will be able to navigate in graphical system by utilizing from several navigation methods. There  will be switching keys which will provide fast connection to certain graphical pages. There will be switching keys in windows keyboard which will maintain fast connection to certain  graphical page. There will be windows style navigation menus which provide access to all configured pages from  other pages in system. Graphical screens will be configured together with areas with problems where user can switch to  detailed view of plant(if any) by clicking over it. There will be windows style navigation menus which provide access to all configured page from other  pages within system. Windows style navigation menus will be able to be configured during operation  and will be able to be recorded by auxiliary program by project backup/reload auxiliary program and  will be able to be reloaded.  Trend and alarm group assignments will be able to be configured during operation and will be able to  be recorded within project configuration as it will be present in back up and reloading auxiliary  program. 8.19.8 Alarms and Events Number of supported alarms will not be limited by software. Maximum 2 billion alarm summary will  be able to be stored in local alarm archive and they will be stored in memory such that they will be  able to be called by standard alarm monitoring screens after minimum 10 days. Consider that each  event will require 202 byte memory and consider the length of comment. 32.000 events will require  minimum 6,2 MB memory. If you use too many events be sure that there is sufficient RAM. Speed of  processer varies with respect to power of processor. Alarm events will be written in log files and will be stored individually based on periodic files for  archiving. Software will be integrated such that an alarm which is acknowledged in operator station will be  recognized in both primary and standby server and will be seen as acknowledged in all client stations.  8_Vol3_d4.3_Section 8 electrical works_en_GIR.rev8.doc 