Evaluation of the Fukushima Daiichi Unit 4 Spent Fuel Pool

Bruce Robert Hugo

Abstract


Accurate prediction of evaporative losses from spent nuclear storage pools (SFPs) is important for activities ranging from sizing of water makeup systems during plant design to predicting the time available to supply emergency makeup water following severe accidents.  A new evaporation model based on diffusion has been proposed that makes substantially different predictions compared with other correlations for evaporation under conditions of high water temperature and forced air flow.  Analysis of the Fukushima Daiichi Unit 4 SFP response to a prolonged loss of cooling has provided the only high temperature evaporation data with forced air flow present.  The diffusion based evaporation model is compared with two other modern evaporation correlations.

Keywords


Spent Fuel Storage;Evaporation;Fukushima Daiichi Accident

References


Hugo, B. R. et al. Predicting Evaporation Rates From Spent Nuclear Fuel Storage Pools. International Nuclear Safety Journal. 2014; 3;1:50-56.

Shah, M. M. Methods for Calculation of Evaporation from Swimming Pools and Other Water Surfaces. ASHRAE Transactions. 2014;120(2);3-17.

Wang, D. et al. Study of Fukushima Daiichi Nuclear Power Station Unit 4 Spent-Fuel Pool. Nuclear Technology. 2012;(180);205-215.

Weather Underground. 2015. Available from: www.wunderground.com


Full Text: PDF

Refbacks

  • There are currently no refbacks.


Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.

"No endorsement" policy: Unless explicitly stated otherwise, the opinions, analyses, discussions, views and recommendations outlined in the articles published in the International Nuclear Safety Journal (INSJ) are solely those of their respective authors and not of the editors, owners or publishers of the INSJ.