Abstract
Gamma ray dose is calculated for loss of coolant accident in spent fuel pond (SFP) storing irradiated fuels used in light water reactors. Influence of modelling of fuel assemblies, source distributions, and loading fraction of fuel assemblies in the fuel rack on the dose are investigated.
Highlights
In systems of light water reactors, discharged spent fuel assemblies (FAs) are stored in racks of a spent fuel ponds (SFP)
In unit 4 of 1F, its decay heat removal function was recovered by feeding water from a concrete pumping vehicle prepared outside reactor building (R/B) and the SFP was prevented from LOCA, at last [1]
We modelled FAs and a SFP and analysed radiation dose at the top height of SFP since the radiation dose at the level would be the source of skyshine radiation
Summary
In systems of light water reactors, discharged spent fuel assemblies (FAs) are stored in racks of a spent fuel ponds (SFP). In unit 4 of 1F, its decay heat removal function was recovered by feeding water from a concrete pumping vehicle prepared outside R/B and the SFP was prevented from LOCA, at last [1]. In addition to evaporation following to malfunction of RHR, leakage of coolant by siphon phenomenon initiated by destruction of outlet pipes of SFP cooling and cleanup systems is lined up on the anticipated sequence to SFP LOCA. In the both cases, utilities have to assess what is happened when active region of FAs is exposed to air. Important parameters to be assessed for the radiation dose were outlined
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.