ML19345D791
| ML19345D791 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 12/03/1980 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-80-322-000 10CFR-050.55E, 10CFR-50.55E, NCR-BLN-NEB-800, NUDOCS 8012160675 | |
| Download: ML19345D791 (3) | |
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PRELIMINARY EVALUATION OF THE' ATTACHED REPORT ItOICATES LEAD RESPONSIBILITY FOR FOLLOWl)P.AS SHOWN BELOW:
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u TENNESSEE VALt.t?Y AUTHORITY CH ATTANOOGA. TENr.r5SEE 374ot 66-95b5A 400 Chestnut Street Tower II Dece:ber 3, 1980 N
Mr. James P.N,0'Reilly, Director Office of Inspection and Enforce =ent U.S. Muclear Regulatory Cc=tissic:
Recion II - Suite.3100 101 Marietta Street \\
Atlantc. Georgia ?O
Dear Mr. O'Reilly:
EC LEFO:TE NUOLEAR PLANT UNITS 1 AND 2 - BAEC00C & WILCOX'S NONCONSERVAT1TE ANALYSIS OF EUTRD'i FLUI - NCR ELN EB 8007 - FIRST INTERIM REPORT On Nove=ber 5, 1980, R. W. Wright, NRC-CIE Region II, was infor=ed that the subject nonconformance was deter =ined to be reportable in accordance with 10 CFR 50.55(e). Enclosed is our first interic report. We censider 10 CFR Part Q to be applicable to this deficiency. We expect to sub=it our next report by March 30, 1981.
If you have any questions concerning this =atter, please get in touch with D. L. Lambert at FTS 657-2551.
Very truly yours, TEN!.*T.SSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Regulation and Safety Enclosure
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Mr. Victor Stello, Jr., Director (Enclcsure)k Office of Inspection and Enforce =ent U.S. Nuclear Regulatory Cc=nission Washington, DC 20555 D**]D "]D 7f lu ll }k C o o JB An Ecual Oppertun:t. E-::'pye'
e ENCLOSURE BELLEFO TE NUCLEAR PLA:iT "!:IIS 1 AllD 2 BABCOCK & WILCOX'S (B&W) !!C:;;0:: SERVAT.~"E A:lALYSIS OF NEUTRON FLUX NCR BLN !!EB 8C37 10 CFR 50.55(e)
FIRST INTERIM REFDET Description of Deficiency B&W's ceasurement errors assu=ed in determining reactor protection syste=
setroints may be nonconservative under specific plant conditions. These errors may allow operation cutside the established safety limits in certain design basis events.
The events of concern are: small evercooling and small steam line break; large. *am line break in containment; and the rod ejection accident.
Interim Progress TVA has requested that b&W address the sub'ect deficiency and provide a resolution. TVA is awaiting B&W's response.
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