Hi, Duane,

We at Cook also use spreadsheets and stand-alone programs for many tasks, including surveillances. All products must be either independently reviewed or use software is controlled via our station's software control procedure. Typically, spreadsheets fall into the former category, while compiled programs are controlled.

David Goff
Reactor Engineer
Donald C. Cook Nuclear Plant
269-465-5901 x1465

"Gore, Duane" <degore@stpegs.com>
Sent by: pwrrm@retaqs.com

09/28/2009 02:22 PM

Please respond to
PWR Reactivity Management <pwrrm@retaqs.com>

To	"'PWR Reactivity Management'" <pwrrm@retaqs.com>
cc
Subject	[Pwrrm] Use of Spreadsheets for Surveillances

We at STP use spreadsheets to perform surveillance calculations. The results are then independently verified by a second engineer using an independently generated spreadsheet. Neither spreadsheet has been formally verified per our station Software Quality Assurance procedure. In cases where the results are used without further verification, we do properly QA the spreadsheets (usually in the cases where other groups use the spreadsheets).

Our QA department is of the opinion that at least one of these spreadsheets used for surveillances must by fully verified and documented per our station Software Quality Assurance procedure.

It would help my case if I could cite other Rae’s practices with regards to the use of spreadsheets. What is the practice at your plant?

Thank you,

Duane Gore
Supervisor, Reactor Engineering
STPNOC

(361) 972-8909
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