Summary of the project PP9 has a total of six power blocks (A – F). Blocks A and B are combined cycle facilities and the remaining are simple cycle. SEC awarded a lumpsum turnkey project to Yokogawa Saudi Arabia Company (YKSA) to replace the control systems as well as the associated auxiliary equipment and common systems in Power blocks A and B. These power blocks are further segregated into sub-blocks A1, A2, B1 and B2 which are identical in design, and each of which have four gas turbines (GT), four heat recovery steam generators (HRSG), and one steam turbine (ST). Each of the GE Mark V Gas Turbines is of 80MW capacity while each of the GE Mark V Steam Turbines is of 120MW capacity. These power blocks were originally controlled by a Foxboro IA series DCS, and a Triconex safety system for the ESD application of the main inlet gas valve. Through this project, they were replaced by the CENTUM VP R5 DCS and the ProSafe-RS R3 safety integrated system. The scope of work included engineering, testing, supply, demolition of the existing DCS and ESD control systems, installation, commissioning, training, start-up of the power generation units, and resident engineer support for a 1 year warranty period.Some of the highlights of the scope of work included the refurbishment of the main control room, the replacement of the mimic panels with fourteen 70 inch LED displays, the cut-over of 28,000+ hardwired IOs, and the provision of interfaces for the redundant linking to the DCS of 30+ subsystems that use different communication protocols.23 Location: Plant type: Capacity: Completion: January 2018Riyadh, Kingdom of Saudi Arabia Combined cycle power4 x 450 MWFollowing a project kick-off meeting with the customer, a project team was established and fully geared up its activities to drive ahead the project. At the start of the project, very little was known about the intricacies that would be involved in replicating and converting from the existing software to Yokogawa’s DCS and SIS platform. The first challenge was to extract the project backup and configuration files from each of the UNIX-based FOXBORO workstations and engineering stations. This was not a simple copy and paste task as the workstations were a decade old and their floppy drives weren't working. Another team member within the same department who had prior experience with FOXBORO systems was brought in to salvage the situation. An expert freelancer was also quickly hired and sent to the site, where he with great difficulty was able to download the old files. Next came the challenge of reverse engineering. Yokogawa’s FOXBORO migration tool came in handy with segregating the data in the IO database and getting it into a shape suitable for an initial run, followed by the manual labor of structuring the IO database into a usable format. The project team made up of personnel from Yokogawa Middle East & Africa, Yokogawa India’s Global Delivery Center, and the 3rd party legacy systems expert also put in a lot of hard work to decode the blackbox and come out with the algorithms. After that the work was quite straightforward and easy.With the finished product taking shape, the engineering team back at office was busy giving their final touches to the generated logic and graphics in preparation for a full-fledged FAT. Concurrently, Plant InformationExecutive Summary Customer profile The Saudi Electricity Company (SEC) enjoys a monopoly on the generation, transmission, and distribution of electric power in the Kingdom of Saudi Arabia. The company operates numerous power plants throughout the country, including power plant No.9 (PP9), which is situated east of Riyadh, on the road to Dammam.The Challenges and the SolutionsSince the award of the project to Yokogawa in March 2015, every step forward involved both contractual and technical challenges, owing to the lumpsum turnkey nature of the project. As follows, we look at just a few of the technical challenges faced during the execution of this project.Saudi Electricity Company PP9Replacement of DCS and ESD at Saudi Electricity Company's Power Plant No.9
元のページ ../index.html#26