Abstract
This chapter covers safety topics of the Super LWR. The safety principle is introduced first. The safety system design based on the safety principle is presented. Safety analysis codes for the deterministic approach to the Super LWR safety are introduced. Safety criteria for the integrities of fuel rod and pressure boundary are proposed. Selection, classification, and analyses of the possible abnormal transients and accidents in the Super LWR are presented. There are several key safety characteristics of the Super LWR that are inherent in the design features and their benefits have been identified through systematic safety analyses. A transient subchannel analysis code for the Super LWR is prepared and applied to the flow decreasing events to investigate the influence of cross flow in the fuel assemblies on the safety margin. For the probabilistic approach to the Super LWR safety, simplified level-1 PSA is performed.
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Glossary
- ABWR
-
advanced boiling water reactor
- ADS
-
automatic depressurization system
- AFS
-
auxiliary feedwater system
- ATWS
-
anticipated transient without scram
- BDBE
-
beyond design basis event
- BWR
-
boiling water reactor
- CDF
-
core damage frequency/cumulative damage fraction
- ECCS
-
emergency core cooling system
- E/G
-
emergency diesel generator
- FPP
-
fossil-fired power plant
- HEM
-
homogeneous equilibrium model
- LOCA
-
loss of coolant accident
- LOSP
-
loss of offsite power
- LPCI
-
low pressure core injection
- LWR
-
light water reactor
- MSIV
-
main steam isolation valve
- PCMI
-
pellet cladding mechanical interaction
- PCS
-
power conversion system
- PCT
-
peak cladding temperature
- PSA
-
probabilistic safety assessment
- PWR
-
pressurized water reactor
- RCIC
-
reactor core isolation cooling
- RCP
-
reactor coolant pump
- RHR
-
residual heat removal
- ROSP
-
recovery of offsite power
- RPS
-
reactor protection system
- RPV
-
reactor pressure vessel
- SCWR
-
supercritical pressure water cooled reactor
- SG
-
steam generator
- SLCS
-
standby liquid control system
- SRV
-
safety relief valve
- Super LWR
-
high temperature thermal reactor version of SCWR
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Oka, Y., Koshizuka, S., Ishiwatari, Y., Yamaji, A. (2010). Safety. In: Super Light Water Reactors and Super Fast Reactors. Springer, Boston, MA. https://doi.org/10.1007/978-1-4419-6035-1_6
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DOI: https://doi.org/10.1007/978-1-4419-6035-1_6
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