Global Journal of Computer Science and Technology, C: Software & Data Engineering, Volume 22 Issue 2

values in the drum water quality parameters as calibrated setpoints desired for running of the steam package boiler ES, the green horizontal bars on the drum water panel turned red or green as shown fig8.Also, the boiler drum water quality should be continuously monitored and suitable adjustment in blowdown is carried out to maintain the drum water real- time values as per the steam package boiler design recommendations. The Feed Water Quality Display Panel: This feed water panel on the main steam package boiler displays the real-time values of running plant with the setpoint of pH value, alkalinity of CaCO3 in ppm, Sodium Phosphate as PO4, total dissolved solids (ppm TDS), Reactive Silica max (ppm SiO2), and Oil & Organic matters present in the feed as it goes into the steam package boiler drum, in their respective range of values. When there are low or high values in the feed water quality parameters as setpoints desired for the functional operation and running of the boiler system, error will be seen as the horizontal bar indicator turned red on the panel on the feed water quality panel. The Steam Package Boiler Process Measurement Parameters The four (4) bars on the main application interface represent these four main process measurements in the industry, first is the water Level in the drum (1000 MmWc), Temperature of the drum (34 Deg. C), Flow of the feed water (150 m/c3), and the Pressure that is built up in the drum as it is heated up (47.4 kg/cm3). These four (4) PMP can be seen on the main SPB main application interface as shown in Figure5. Each of the PMP values on the bar can be reset by mouse clicking the button below each of the parameter bars to get an input popup box. The user input textbox receives only the calibrated range specifies. Inputting right range values into the textbox will remove the red colour indicator on any of four parameter bars as required. The Steam Package Boiler Drum: The steam package boiler is one the main fertilizer section that is monitored during operations. The boiler system drum can be seen on the main application interface. The water level is monitor with the result obtained from the four industry measurement parameters vertical bars representing pressure, temperature, level, and flow. The Bottom Control Panel: This panel comprises of the “Stop Error Noise” used to stop any error noise during operations, the noise is coming due to system error, “Dose PO4” and “Dose SiO2” buttons are used for dosing as required to maintain feed & boiler water qualities at a desirable level, on clicking either of this button will bring a pop-up window with an input textbox which receives the value from any user (field operator/engineers) of the system. The Console Panel: This panel is another important located on the bottom control. The result of using the console panel button is seen when it is mouse clicked, it comprises of the save, hide, view, and delete buttons. Each result of these buttons shown in fig10 below. Figure 8: The Control Button VI. E valuation and R esults The performance of every system after design and installation will be monitored to check if it’s working properly, meaning to check if the system meets the design specifications. In other to evaluate, validate the correctness of proposed system by the boiler domain practitioners, the following parameters were used for dynamic simulation, Actual Minimum Range, Actual Maximum Range, Test values Worst-case and Test values Best-case were tested with the following conditions. Actual Values: These values range are the boiler parameters from minimum to the maximum required limits of the system design specification. The healthy, proper, and effective performance on control and maintenance of the steam package boiler depends on these parameters operating within the required range and limits as shown below on the tabulated Table7 of worst-case and best-case test values. Test Values: There are two type of test values used in this discussion, the worst-case and the best-case test values. 1. Worst-Case : The worst-case value are the values outside the expected functional range of the required plant parameters value. This worst-case value is used to monitor, examine, and evaluate the behaviour of the SPB if the water chemical component quality exceeds or falls below the required set value. 2. Best Case: The best-case values are the values which are set within the required functional range of the plant water chemical components. Steam Package Boiler Expert System for Control and Maintenance of Fertilizer Plants Using Rule-Base Fuzzy Logic Global Journal of Computer Science and Technology Volume XXII Issue II Version I 34 Year 2022 ( ) C © 2022 Global Journals