EBR-II unprotected loss-of-heat-sink predictions and preliminary test results

Feldman, E.E.; Mohr, D.; Chang, L.K.; Planchon, H.P.; Dean, E.M.; Betten, P.R.

doi:10.1016/0029-5493(87)90150-6

Cited by 32 publications

(5 citation statements)

References 4 publications

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“…By early April 1986 (a few days before the accident at Chernobyl NPP in the USSR), the work on experimental modeling of ATWS regimes at the EBR-II reactor (Argonne National Laboratory, Idaho, USA) was largely completed, demonstrating high capabilities in ensuring self-protection of lowpower reactors with sodium cooling. The results of these unique studies are published in [5][6][7][8][9][10]. Zirconium-doped metal fuel has been proposed as a possible accidenttolerant fuel for fast sodium reactors in the USA [11].…”

Section: The History Of the Issuementioning

confidence: 99%

Accident Tolerant Materials for LMFR

Okunev¹

2021

Nuclear Materials

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Several concepts of fast reactors with liquid metal coolant (LMFR) are being developed in the world. Lead-cooled reactors are most preferred for the safe nuclear power of the future. Projects of such reactors are being developed in Russia (BREST), the European Union (the latest development is ALFRED), and the USA (a series of STAR low-power reactor designs). The potential capabilities of fuel, coolant, and structural materials considered for use in the core to increase safety have not been exhausted. There are still unused reserves that can significantly increase the self-protection of the reactor. This chapter presents the results of the analysis of the use of new types of nuclear fuel: based on ceramics and beryllium and ceramics and uranium nanopowder. Studies are being conducted on the possibility of optimizing the composition of lead coolant without isotope separation. The possibilities of improving the safety of LMFR with a coolant based on lead extracted from thorium ores are being investigated. The possibility of using tungsten coatings of the cladding of fuel pins deposited using low-temperature plasma spraying is analyzed. The composition of materials was optimized in terms of improving reactor safety. The proposed innovations will significantly increase the self-protection of the reactor from the totality of severe accidents.

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Section: The History Of the Issuementioning

confidence: 99%

Accident Tolerant Materials for LMFR

Okunev¹

2021

Nuclear Materials

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“…Corresponding to the primary circuit system, the secondary circuit system is a heat sink of the core during the normal operation of nuclear reactors. When the cooling system of the secondary circuit fails, such as all the secondary circuit pumps trip, insufficient cooling capacity of the core results in a heat sink accident [36]. During the process of heat sink accident, all of the circuit pumps in the secondary loop fail, which causes a mass flow of the entire secondary circuit to drop from 100% to 8% within 20 s. Both unprotected and protected cases are examined in this work.…”

Section: Loss Of Heat Sink Accidentmentioning

confidence: 99%

Comparative Safety Analysis of Accelerator Driven Subcritical Systems and Critical Nuclear Energy Systems

2021

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The accelerator driven subcritical system (ADS) has been chosen as one of the best candidates for Generation IV nuclear energy systems which could not only produce clean energy but also incinerate nuclear waste. The transient characteristics and operation principles of ADS are significantly different from those of the critical nuclear energy system (CNES). In this work, the safety characteristics of ADS are analyzed and compared with CNES by a developed neutronics and thermal-hydraulics coupled code named ARTAP. Three typical accidents are carried out in both ADS and CNES, including reactivity insertion, loss of flow, and loss of heat sink. The comparison results show that the power and the temperatures of fuel, cladding, and coolant of the CNES reactor are much higher than those of the ADS reactor during the reactivity insertion accident, which means ADS has a better safety advantage than CNES. However, due to the subcriticality of the ADS core and its low sensitivity to negative reactivity feedback, the simulation results indicate that the inherent safety characteristics of CNES are better than those of ADS under loss of flow accident, and the protection system of ADS would be quickly activated to achieve an emergency shutdown after the accident occurs. For the loss of heat sink, it is found that the peak temperatures of the cladding in the ADS and CNES reactors are lower than the safety limit, which imply these two reactors have good safety performance against loss of heat sink accidents.

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“…Reactor) could be useful. A factor-of-4 scaleup of the 350-kW EBR-II system [49] should be adequate to remove all the decay heat.…”

Section: -77mentioning

confidence: 99%

TIBER II/ETR final design report: Volume 3, 5. 0 Radiation safety and environment; 6. 0 Physics and technology R and D needs

Lee¹

1987

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This, report was prepared as an account of work sponsored by an agent.) oi \uc United Stales Government. Neither the United Stales Government nor an> agency ihereof. n>ir jn; of iheir employees, makes any warranty, express ur implied, or assumes any lega] liabihi) or responsibiliiy for the accuracy, completeness, or usefulness of any infcrrr.ition, appariilus, product, or process disclosed, or represents that its use would not infringe privately ju-ned rights. Refer ence herein to any specific commercial product, process, or service by irade name, trademark;, manufacturer, or otherwise does not necessarily constitute or imply us endorsement, recom mendation, or favoring by the United States Government or any agency ihcreof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof-Yite Co i DiSTRrauriGjj OF Tiiiz CCCU;.

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EBR-II unprotected loss-of-heat-sink predictions and preliminary test results

Cited by 32 publications

References 4 publications

Accident Tolerant Materials for LMFR

Accident Tolerant Materials for LMFR

Comparative Safety Analysis of Accelerator Driven Subcritical Systems and Critical Nuclear Energy Systems

TIBER II/ETR final design report: Volume 3, 5. 0 Radiation safety and environment; 6. 0 Physics and technology R and D needs

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