Posted by Bud in WV on March 04, 2009 at 13:24:24 from (173.80.13.48):
In Reply to: Re: O.T. Hydroelectric posted by buickanddeere on March 04, 2009 at 08:18:19:
About 25 years ago I worked on a project for dry spent fuel storage. After the spent fuel is old enough for the initial hi rad levels to have faded the fuel is transfered to SS casts, the head is welded on by certified welders, a vacuum is pulled and a N2 blanket is applied. Then the cast is transfered to concrete tombs on the nuke site.
They are checked during the weekly rounds by the on site HPs (Health Physics Technicians) who's reason to exist is to monitor the rad levels throughout the plant...the rad levels at the tombs are not much higher than bright sunshine. The biggest problem with rad waste is consumables. Once it goes in it has to be drummed and sent out as rad waste. The ordinary sand blasting medium we used on the turbine rotors was less radioactive after we used it than when it came in but it still had to be drummed - just 'cause! You can buy the same stuff about anywhere and nobody knows it "hot". The levels are so low nobody outside of a nuke can measure it but once it's on-site, it becomes rad waste because it's measurable. Stuff like silk lantern mantles, tungston for TIG welding, SAND, COAL, GRANITE COUNTER TOPS and a lot of other REAL common stuff is MUCH more radioactive than 95% of what you can find in a power plant.
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