A reply below from
Whiting Delk at TVA…
President, RETAQS, Inc.
(610) 277-8991 ext 201
From: Delk, Whiting S.
[mailto:wsdelk@tva.gov]
Sent: Friday, March 24, 2006 12:33
PM
To: pwrrm-bounces@retaqs.com
Cc: Michael_Fanguy@dom.com
Subject: IFBA implementation
1.
Has anyone had experience with a 0 MTC core? How did it affect
normal
ops at full power or transients?
TVA'a
response for this question:
The
technical specifications for SQN and WBN have always required that the MTC be
negative during operation. TVA did operate early cycles with the MTC near zero
at HZP conditions early in the cycle. Since the isothermal temperature
coefficient was negative at zero power and the power coefficient was negative
throughout the operating range, TVA did not experience the difficulties that
could arise from operating with a positive temperature coefficient or power
coefficient.