05000296/LER-1979-027, Forwards LER 79-027/03L-0

Forwards LER 79-027/03L-0

ML18024B255
Person / Time
Site:	Browns Ferry
Issue date:	01/15/1980
From:	Calhoun J TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024B257	List: 05000296/LER-1979-027, Forwards LER 79-027/03L-0 05000296/LER-1979-027-03, /03L-0:on 791216,while Performing SI 4.2.C.1A, Average Power Range Monitor B Scram Setting Found to Be Greater than 120% for Simulated Flow of 125%.Caused by Instrument Drift.Trip Channels Adjusted
References
NUDOCS 8001210197
Download: ML18024B255 (2)

LER-1979-027, Forwards LER 79-027/03L-0

Event date:
Report date:
2961979027R00 - NRC Website

text

JAN 1 5 ')880.

0

~

TENNESSEE VALLEYAUTHORITY CHATTANOOGA. TENNESSEE 37401 716 Edney Building Ih. James P. O'Reilly,,Dixector U.S. Nuclear Regulatory Commission Office of Inspection-and Enforcement Region IX 101 Marietta Street~

Suite 3100 Atlanta, Geoxgia 30303

Dear Mr, O'Really:

TENNESSEE VALLLVNGHORIXY-BRO'ffHS PlQUtY NUCLEAR PLANT UNIT 3 - DOCKET 50, 50-296 - PACILIRE OPERATING LICENSE DPR REPORTABLE OCCUIGKNCE REPORT BPZO-50-296/7927 The enclosed report provides a detailed description of the following nonconservative aetpoints found during the performance of Surveillance Instruction 4.2.C-IA, The APKC "B" high flux trip was found greater than 120 percent and the AP1Qi "D" inoperative rod block and alarm trip was found less than 13 LPRM inputs.

This rcport is submitted in accordance srJ.th Brows Perry unit 3 Technical Specification 6.7.2.1(l).

Very truly yours, TKQHSSEE VALLLYAUTHORITY J. R. Calhoun Director of Nuclear Power Hr. R. P, Sullivan, NRC Xnspector, Brains Perry An Equal Opportunity Empfoyer iI)oygl@10 t

Enclosure (3) cc (Enclosure) i Director (3)

Office of Management Information and Progxam Contxol U.S. Nuclear Regulatory Commission Vashingtop, DC 20555 Director (40)

Office of Xnspection and Enforcement U.S. Nuclear Regulatoxy Commission Ilashington, 3)C 20555 Mr. BiU, Lavallee Nuclear Safety Analysis Center Palo Alto California 94303 goo~

5i'

~

0

'-", J 3QV,'3".'-t,.'.i.'.gl~J5J.=>>

p f.i,'

J )$j,(,'"1Q' gpss >>f,ag 's i flp 4 L szF>~"

e