Investor Presentaiton
NRA, Japan
Nuclear Regulation Authority
Experimental Study on
Appendix Seawater and Boric Acid Injection
We conducting a study on seawater/boric acid injection to identify
the salt and boric acid crystallization/precipitation
characteristics and its influence on fuel/debris cooling such as
flow blockage for improving AM measures.
Test for precipitation
Seawater/boric acid at core
solution tank
Downcomer
Online sampling
needles
Separator
Spacer
IAI
Salt
precipitation
area
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6000
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Pre-heater
介
Seawater/boric acid
boiling loop
Spacer
6x6 mockup
bundle
Appearance of salt
crystallization
in a preliminary
test with simple
geometry
Preliminary test with bundle
Vertical-
sectional
Cross-sectional
view at TAF-
15mm
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