IS the water soluable resin flammable or impervious to heat?
It just might work where there is no heat source.

Still this sounds like the infamous glue remedy.

Is your containment vessel cracked? IS you basement floor at risk of of being melted and radioactive water is pouring throught the hole?
WELL JUST USE WHACKY GLUE
its safe and fun to use.

But wait there's more...