Afternoon,

Fort Calhoun Station is replacing its S/Gs, Pressurizer, Reactor Head, etc... during the Fall 06 Outage.

Even though we've hammered out most of the hard details, we are still having some difficulties with some low-hanging fruit.

One of these is locating 30 yr old basis information for the boration/dilution equations used on the plant computer. There are some constants used in the equation that are tied to volume yet we can't generate a good basis for the values. As a result, we are probably going to generate our own equations with supporting basis documentation.

If you would please supply us with any of your calcs and basis information, we would like to compare them and generate our equations using a standard methodology if one even exists...

Any input in this area would be appreciated...

Thanks,

Matt Pohl

Principal Reactor Engineer - Operations

Fort Calhoun Nuclear Station

(402)533-6820 (work)

(402)561-3864 (pager)

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