Duane,
At North Anna, when we use spreadsheets for surveillance calcs. or
reactivity calcs., and the spreadsheet is not a “Nuclear Quality Code”,
our procedures require an independent check of the results. Typically
this would be a hand calculation or a spreadsheet created separately, by a
different person, from the original one.
Rob McAndrew
North Anna Reactor Engineering
540-894-2859
From: pwrrm@retaqs.com
[mailto:pwrrm@retaqs.com] On Behalf Of Gore, Duane
Sent: Monday, September 28, 2009 2:22 PM
To: 'PWR Reactivity Management'
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