Integrating Knowledge-Based and Mathematical Programming Approaches for Process Safety Verification

1997 ◽  
Vol 21 (1-2) ◽  
pp. S905-S910
Author(s):  
R Srinivasan
1997 ◽  
Vol 21 ◽  
pp. S905-S910 ◽  
Author(s):  
R. Srinivasan ◽  
V.D. Dimitriadis ◽  
N. Shah ◽  
V. Venkatasubramanian

AIChE Journal ◽  
1998 ◽  
Vol 44 (2) ◽  
pp. 361-371 ◽  
Author(s):  
R. Srinivasan ◽  
V. D. Dimitriadis ◽  
N. Shah ◽  
V. Venkatasubramanian

Annals of GIS ◽  
2005 ◽  
Vol 11 (2) ◽  
pp. 97-112
Author(s):  
Hui Wei ◽  
Qingxin Xu ◽  
Yu Bai ◽  
Loilei Lai

1996 ◽  
Vol 20 ◽  
pp. S503-S508 ◽  
Author(s):  
V.D. Dimitriadis ◽  
J. Hackenberg ◽  
N. Shah ◽  
C.C. Pantelides

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7183
Author(s):  
Faraz Qasim ◽  
Doug Hyung Lee ◽  
Jongkuk Won ◽  
Jin-Kuk Ha ◽  
Sang Jin Park

As the technology is emerging, the process industries are actively migrating to Industry 4.0 to optimize energy, production, profit, and the quality of products. It should be noted that real-time process monitoring is the area where most of the energies are being placed for the sake of optimization and safety. Big data and knowledge-based platforms are receiving much attention to provide a comprehensive decision support system. In this study, the Advanced Advisory system for Anomalies (AAA) is developed to predict and detect the abnormal operation in fired heaters for real-time process safety and optimization in a petrochemical plant. This system predicts and raises an alarm for future problems and detects and diagnoses abnormal conditions using root cause analysis (RCA), using the combination of FMEA (failure mode and effects analysis) and FTA (fault tree analysis) techniques. The developed AAA system has been integrated with databases in a petrochemical plant, and the results have been validated well by testing the application over an extensive period. This AAA online system provides a flexible architecture, and it can also be integrated into other systems or databases available at different levels in a plant. This automated AAA platform continuously monitors the operation, checks the dynamic conditions configured in it, and raises an alarm if the statistics exceed their control thresholds. Moreover, the effect of heaters’ abnormal conditions on efficiency and other KPIs (key performance indicators) is studied to explore the scope of improvement in heaters’ operation.


1996 ◽  
Vol 26 (7) ◽  
pp. 1193-1202 ◽  
Author(s):  
Cristopher L. Brack ◽  
Peter L. Marshall

Five knowledge-based approaches (three search routines and two expert systems) to forest operations scheduling were compared with mathematical programming (linear programming and mixed integer programming) and simulation approaches for two plantation forests in New South Wales, Australia. Strategies produced using these approaches were compared on the basis of scores for timber volume flow, scenic beauty, stand health, and water quality. Timber flow scores were highest for the linear programming strategies, but some of the strategies produced by the knowledge-based approaches scored almost as high. The timber flow scores for the mixed integer programming strategies were exceeded by some of the knowledge-based strategies, because of the approximations required to achieve mixed integer programming solutions for larger problems. The knowledge-based approaches could produce higher scoring strategies for the other criteria than the mathematical programming or simulation approaches. The multiple strategies produced by two of the search procedures, and the goal hierarchy incorporated into the expert systems, allow the user to make explicit trade-offs among strategies in terms of performance for the various criteria.


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