ML19343A190
| ML19343A190 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/11/1980 |
| From: | Hukill H METROPOLITAN EDISON CO. |
| To: | Eisenhut D Office of Nuclear Reactor Regulation |
| References | |
| REF-GTECI-A-02, REF-GTECI-EQ, TASK-A-02, TASK-A-2, TASK-OR TLL-386, NUDOCS 8009160367 | |
| Download: ML19343A190 (2) | |
Text
P Metropolitan Edison Company N-Post Office Sov 480 Middle +own. Pennsylvania 17057 717 9444041 Writer's D rect Dial Nurnber September 11, 1980 TLL 386 Office of uclear Reactor Regulation Atta:
DareU C. Eisenhut, Director Division
< censing U. S. Nuciee. Regulatory Commission Washington, D.C.
20535
Dear Sir:
Three Mile Island Nuclear Station, Unit 1 (TMI-1)
Operating License No. DPR-50 Docket No. 50-289 Asymmetric LOCA Load Program - Phase 2 Report
References:
1.
Victor Stello, Jr. 's letter to All PWR Licensees, dated January 25, 1978.
2.
J. H. Taylor's (B&W) letter to D. G. Eisenhut, Februa ry 14, 1980, transmittal of BAW-1597, " Effects of Asymmetric LOCA Loadings - Phase 2 Status," dated February 1980.
3.
J. G. Herbein's letter to D. G. Eisenhut, dated February 25, 1980 concurring with conclusions of BAW-1597.
4.
J. H. Taylor's (B&W) letter to D. G. Eisenhut, dated July 1, 1980, transmittal of BAW-1621, " Effects of Asymmetric LOCA Loadings - Phase 2 Analysis," dated July 1980.
Reference No. 1 required PWR Licensees to proceed with an evaluation of the overall asymmetric loss of coolant accident (LOCA) loads. A status report of this evaluation was submitted to you earlier this year by Reference Nos. 2 and'-?.
We have reviewed the final Phase 2 report prepared by Babcock & Wilcox (BAW-1621),
which was transmitted to you by Reference No. 4, and have determined that the report is applicable to TMI-1.
The report demonstrates the ability of TMI-1 to withstaad the effects of asymmetric LOCA loads and maintain a coolable core geometry for all breaks except a large hot leg break. TMI-1 can also withstand a large hot leg break provided that the hot leg break opening area "A" is limited to 0.844A (See Section 12.0 of Reference No. 4). The required 030 S
IO 80091603N
~
D. G. Eisenhut TLL 386 clearances needed to design an appropriate restraint system are being taken.
TMI-l will modify the hot leg restraints, as necessary, during the first refueling following restart.
Sincerely.
y ' (D Iksllu! '
H!D.'Hukill Director, TMI-l HDH: C4S : bah cc:
J. T. Collins B. J. Snyder H. Silver D. Dilanni R. IJ. Re ' d B. H. Grier l
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