ML19309F129
| ML19309F129 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 03/19/1980 |
| From: | Ohanlon J ARKANSAS POWER & LIGHT CO. |
| To: | |
| References | |
| AN-80-2-346, AN0-80-2-0346, NUDOCS 8004280521 | |
| Download: ML19309F129 (1) | |
Text
ARKANSAS POWER & LIGHT COMPANY Arkansas Nuclear One Russellville, Arkansas March 19, 1980 ANO-80-2-0346 Mr. Karl Seyfrit U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011
SUBJECT:
Arkansas Nuclear One Licensee Event Report 50-368/80-016
Dear Mr. Seyfrit:
This telegram confirms the telephone conversation between Mr. W. D. Johnson (NRC Inspector Region IV) and Mr. G. H. Miller (ANO Engineering & Technical Support Manager) at approximately 1430 on March 18, 1980. This is reported to you in accordance with ANO-2 Technical Specification 6.9.1.8.h.
Arkansas Power & Light Company received and reviewed a letter from Combus-tion Engineering advising us that the safety analysis for the boron dilution 1
accident in Mode 5 assumes an initial shutdown margin of 2% Ak/k and that Technical Specification 3.1.1.2 only requires a 1% Ak/k shutdown margin.
Based on our review of this letter, we have determined this to be prompt re-portable per Technical Specification 6.9.1.8.h.
We have made a procedure change to OP 2103.15, Reactivity Balance Calculation, which requires addi-tional shutdown margin in Mode 5 adequate to ensure greater than 2% Ak/k shutdown margin.
We will submit a Technical Specification Change Request by April 30, 1980 to change Tech Spec 3.1.1.2 to require > 2% Ak/k shutdown margin in Mode 5.
Additional information will be provided in the follow-up report.
Sincerely, J. P. O'Hanlon General Manager JP0:THC: der S
cc:
W. Cavanaugh, III
/
F. B. Foster hO J. M. Griffin B. Johnson (NRC)
S. McGregor G. H. Miller D. R. Sikes MEMBEA MICOLE SCUTH UT1UTIES SYSTEM y
800428062/