ML20136A674
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LL #
May 1,197.i J
Note to Stuart A. Treby METED, UNIT 1 -- PRENOTICE 4
1 concur in the decision to prenotice the proposed license amendm
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h incorporate revised Rod Withdrawal Limit Curves that decrease t e w
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of the worst hypothetical ejected control rod.
5 As indicated in the letter from the Staff to METED dated March 3l h calculations on the Staff identified deficiencies in the ejected rod wort J
d.
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is letter notes that, inspite of the deficiencies in these calcu at ons, h the present Rod Withdrawal Limit Curves are valid for operation wit h curves current control rod arrangement and fuel cycle, but that sucA control rod may be unacceptable with a control rod interchange.
<l 19, 1975.
l interchange was scheduled for May l
l The Staff has concluded, and I agree, that revising the Rod Withdraw l
Limit Curves to compensate for the scheduled rod interchange invo ves i
ificant a significant hazards consideration in that it may i ifi-i d curves cant decrease in a safety margin since the effect of such rev se f
on LOCA restrictions is not known at this time, n
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- u, m-Henry J.;ifcGurren 1
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