ML20209E130
| ML20209E130 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 09/03/1986 |
| From: | Sears P Office of Nuclear Reactor Regulation |
| To: | Harold Denton, Lyons J, Vollmer R NRC |
| References | |
| NUDOCS 8609100054 | |
| Download: ML20209E130 (1) | |
Text
,
September 3, 1986 Cs V DocketNo.g09 MEMORANDUM FOR:
H. Denton R. W. Houston W. Travers R. Vollmer D. Crutchfield C. Grimes J. Lyons E. Rossi W. Johnston H. Thompson G. Lainas C. Thomas F. Miraglia T. Speis J. Wermiel R. Bernero W. liussell W. Regan G. Holahan G. Knighton T. Novak J. Stolz F. Schroeder H. Berkow THRU:
Ashok C. Thadani, Director PWR Project Directorate #8 Division of PWR Licensing-B FROM:
Patrick M. Sears, Project Manager PWR Project Directorate #8 Division of PWR Licensing-B
SUBJECT:
DAILY HIGHLIGHT - MAINE YANKEE ATOMIC POWER STATION VAINE YANKEE ATOMIC POWER STATION At approximately 8:00 a.m. on Tuesday, September 2, 1986, I was informed by Maine Yankee Atomic Power Company (MYAPCo) that Yankee Atomic, which performs MYAPCo's reload analyses, had discovered that the highly peaked axial power shape used in MYAPCo's Large Break LOCA Analyses since 1977.is not the bounding shape. The bounding shape has been found to be a flattened shape.
The flattened shape gives higher peak clad temperatures than the highly peaked shape later in the life of the reload. Yankee Atomic has not as yet done a formal analysis but new interim administrative procedures on peaking factors are being implemented on a high priority basis which will assure compliance with 10 CFR 50.46. Maine Yankee further stated that to their knowledge this issue does not impact other plants. Maine Yankee is following up their tele-phone report with a letter explaining their new procedures and are coming to l
Bethesda on September 9,1986 to make a full report and answer any questions.
/S/
Patrick M. Sears, Project Manager PWR Project Directorate #8 Division of PWR Licensing-B Distribution
! Docket N PB08 Reading Gray File 3.4c NRC/ Local PDR PSears PBD8h15 PBD8 PBD8 PQutzer PSears:jch AThadani s/)/86 9/3/86 9/
86 8609100054 860903 DR ADOCK 0500 9