SS2011_OilandGas

15/70

10System DetailsSystem:DCS (CENTUM), Supervisory Computer System, Anti Surge Control,Vibration & Temperature Monitoring,Hazard Monitoring & Control, SER(Sequence of event recorder),Field Instruments, Analyzer System, ESD/EDP Valves,ESD(Emergency Shutdown System)/EDP(Emergency Depressure System), Electrical Control, UPS, CCTV, Telecommunication, Public Announcement,Fire Suppression SystemTotal I/O:14,810System Configuration:Man-machine Interface x 47, Field Control Station x 49(Four LNG Process Trains, Associated Utilities, Offsite)Scope:System integration and cutover (hot & cold) workPT BadakIndonesiaProject ScheduleAlthough the project schedule was very tight, the project was completed ahead of schedule without any trouble. This greatly owes to the way of working where PT Badak, Chiyoda and Yokogawa carried out the cutover work as one integrated team.• The design, engineering and manufacturing were conducted in a very short time - seven months from kick-off meeting.• The factory acceptance test including the system integration test with the sub systems was carefully conducted in four months.• It took only 13 months after the kick-off meeting for the start of the initial cutover work.• The cold and hot cutover work of 14,810 I/O points was completed in 13 months with no impact to normal plant operation.Project Scope & ResultsOn this project, Yokogawa’s scope was not limited to just the supply of the control system and the cutover work, but also included responsibility for all of the major safety and electrical systems, playing an important role as a system integrator.Now, all eight trains including the associated utilities and offsite facilities are controlled by the Yokogawa CENTUM, which are integrated into one system consisting of approximately 100 man-machine interfaces and 100 field control stations. As a result of the change from panel mounted single loop controllers to a DCS on Module I, there was an increase in both productivity and efficiency of plant operations.The results and benefits include:• An increase of steam production from 6%-12% from original max load (total of 11 boilers rated 295t/h per boiler)• Improvement of boiler response time of 6.7 to 7.9 seconds for 1 ton of steam flow rate change• A decrease of production down time since the first two trains’ cutover in September 2001• Allowed a supervisory computer system that enabled process data from all eight trains, utilities and offsitefacilities of Module I & II to be acquired and monitored at a single location“We are very proud to have participated in this prestigious project, and are appreciative of PT Badak, the LNG operators and Chiyoda - the EPC contractor - for giving us this opportunity and their strong support throughout this project.”Conventional analog control panelboard (before)Central control room (after)

※このページを正しく表示するにはFlashPlayer9以上が必要です