Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved]
Background The engineered safety systems are designed to execute fundamental safety functions encompassing reactivity confinement, reactivity control and decay heat removal. Failure of any one of these functions can result in severe accident conditions. Passive systems have been implemented as a bet...
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F1000 Research Ltd
2025-05-01
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| Series: | Nuclear Science and Technology Open Research |
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| Online Access: | https://nstopenresearch.org/articles/2-55/v2 |
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| author | Hyun Gook Kang Asad Ullah Amin Shah Ali Mansoor Junyung Kim |
| author_facet | Hyun Gook Kang Asad Ullah Amin Shah Ali Mansoor Junyung Kim |
| author_sort | Hyun Gook Kang |
| collection | DOAJ |
| description | Background The engineered safety systems are designed to execute fundamental safety functions encompassing reactivity confinement, reactivity control and decay heat removal. Failure of any one of these functions can result in severe accident conditions. Passive systems have been implemented as a better option for plant safety. This research proposes a modification of existing safety injection tanks to the new forced safety injection tanks (FSITs) that utilize the backpressure from the pressurizer or steam generator to drive coolant into the reactor core under high pressure conditions. Methods FSITs aim to extend the coping-time during accidents like Station Blackout, providing an extended timing window for deployment of FLEX systems. The mathematical design is proposed and implemented into the thermal-hydraulic input of a nuclear power plant to demonstrate the system’s applicability that was demonstrated by leveraging the conventional PRA approach and risk quantification. Results The suggested system useful when used in the accident scenario of Station black out in-coincident with turbine-driven pumps fail to run. As the proposed design is a conceptual design, the optimization of associated operational parameters and set points is necessary. This optimization is performed using the risk analysis and virtual control environment-based Dynamic Probabilistic Risk Assessment framework. The method and findings of this study affirm that the coping-time for Station Blackout can be significantly extended, ensuring a substantial margin for the effective deployment of the FLEX. Conclusions A concept design of a passive forced safety injection system was suggested and demonstrated by integrating the mathematical model into a thermal-hydraulic model of a nuclear power plant. The parameters were optimized and the results demonstrated that the new system was effective in recovering the nuclear power plant from the accidents such as SBO with turbine-driven pumps fail to operate. |
| format | Article |
| id | doaj-art-b42475ffa2cd44a789eb056764b61bf1 |
| institution | DOAJ |
| issn | 2755-967X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | F1000 Research Ltd |
| record_format | Article |
| series | Nuclear Science and Technology Open Research |
| spelling | doaj-art-b42475ffa2cd44a789eb056764b61bf12025-08-20T03:21:30ZengF1000 Research LtdNuclear Science and Technology Open Research2755-967X2025-05-01210.12688/nuclscitechnolopenres.17546.218972Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved]Hyun Gook Kang0Asad Ullah Amin Shah1https://orcid.org/0000-0003-4929-3994Ali Mansoor2https://orcid.org/0000-0002-2013-3391Junyung Kim3Mechanical Aerospace and Nuclear Engineering Department, Rensselaer Polytechnic Institute, Troy, New York, 12180, USAMechanical Aerospace and Nuclear Engineering Department, Rensselaer Polytechnic Institute, Troy, New York, 12180, USADepartment of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, Ohio, 43210, USAIdaho National Laboratory, Idaho Falls, ID, 83415, USABackground The engineered safety systems are designed to execute fundamental safety functions encompassing reactivity confinement, reactivity control and decay heat removal. Failure of any one of these functions can result in severe accident conditions. Passive systems have been implemented as a better option for plant safety. This research proposes a modification of existing safety injection tanks to the new forced safety injection tanks (FSITs) that utilize the backpressure from the pressurizer or steam generator to drive coolant into the reactor core under high pressure conditions. Methods FSITs aim to extend the coping-time during accidents like Station Blackout, providing an extended timing window for deployment of FLEX systems. The mathematical design is proposed and implemented into the thermal-hydraulic input of a nuclear power plant to demonstrate the system’s applicability that was demonstrated by leveraging the conventional PRA approach and risk quantification. Results The suggested system useful when used in the accident scenario of Station black out in-coincident with turbine-driven pumps fail to run. As the proposed design is a conceptual design, the optimization of associated operational parameters and set points is necessary. This optimization is performed using the risk analysis and virtual control environment-based Dynamic Probabilistic Risk Assessment framework. The method and findings of this study affirm that the coping-time for Station Blackout can be significantly extended, ensuring a substantial margin for the effective deployment of the FLEX. Conclusions A concept design of a passive forced safety injection system was suggested and demonstrated by integrating the mathematical model into a thermal-hydraulic model of a nuclear power plant. The parameters were optimized and the results demonstrated that the new system was effective in recovering the nuclear power plant from the accidents such as SBO with turbine-driven pumps fail to operate.https://nstopenresearch.org/articles/2-55/v2Passive safety system Station Blackout; Forced Safety Injection Tank FLEX dynamic risk assessment optimizationeng |
| spellingShingle | Hyun Gook Kang Asad Ullah Amin Shah Ali Mansoor Junyung Kim Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved] Nuclear Science and Technology Open Research Passive safety system Station Blackout; Forced Safety Injection Tank FLEX dynamic risk assessment optimization eng |
| title | Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved] |
| title_full | Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved] |
| title_fullStr | Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved] |
| title_full_unstemmed | Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved] |
| title_short | Concept design, application and optimization of operational parameters for new forced safety injection tank system [version 2; peer review: 2 approved] |
| title_sort | concept design application and optimization of operational parameters for new forced safety injection tank system version 2 peer review 2 approved |
| topic | Passive safety system Station Blackout; Forced Safety Injection Tank FLEX dynamic risk assessment optimization eng |
| url | https://nstopenresearch.org/articles/2-55/v2 |
| work_keys_str_mv | AT hyungookkang conceptdesignapplicationandoptimizationofoperationalparametersfornewforcedsafetyinjectiontanksystemversion2peerreview2approved AT asadullahaminshah conceptdesignapplicationandoptimizationofoperationalparametersfornewforcedsafetyinjectiontanksystemversion2peerreview2approved AT alimansoor conceptdesignapplicationandoptimizationofoperationalparametersfornewforcedsafetyinjectiontanksystemversion2peerreview2approved AT junyungkim conceptdesignapplicationandoptimizationofoperationalparametersfornewforcedsafetyinjectiontanksystemversion2peerreview2approved |