ML19322C396
| ML19322C396 | |
| Person / Time | |
|---|---|
| Site: | Crane, Davis Besse  |
| Issue date: | 02/13/1978 |
| From: | Roe L TOLEDO EDISON CO. |
| To: | Deyoung R Office of Nuclear Reactor Regulation |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8001160932 | |
| Download: ML19322C396 (2) | |
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TOLED J EDISON Docket No. 50-346 LOWELL E ROE v.c. Presedent Feceleties Development License No. NPF-3 MW GESSE g
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Serial No. 415 February 13, 1978
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O Director of Nuclear Reactor Regulation I
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Mr. Richard C. DeYoung
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Deputy Director FEB1 G19785 C Division of Project Management g y mnyumn -6 United States Nuclear Regulatory Commission cgy Washington, D.C.
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Dear Mr. DeYoung:
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Members of my staff met with your Davis-Besse Unit 1 Project Manager and other NRR staff members on February 7,'1978, concerning the need for and
" requirements ~of a natural 7 circulation test! prior to completion of the testliog'Fam fd[Ehe Dajis-Besse1 Unit [l[._During this. meeting,we[stresseill again tihat our. evaluation of this. subject shows.tha... natural. circulation {
] test'is_nof ^rekuired, based on the prototype, _ testing done on the [Ocotie'e~~
No. 1 Unit.
The Davis-Besse unit has the raised. loop configuration;which differs from the Oconee configuration, but this change adds approximately 17% effective driving head for natural circulation.
This provides addi-tional conservatism which is supported by B&W analysis.
During the Februar
[eidde o(N6vem6er_.y 7.,1978 meeting, we presented $ data}fromTieadfor'Er~ip"}
29,;197,7, which_wehad.previouslyanticipatidfwould'be~
. adequate to. fulfill the_ natural'. circulation'. test. data; requirements.~ This data, however, is limited and does not fully meet the requiremen,ts of the test procedure, but it does confirm natural circulation in the primary system during the 15-minute interval that the primary pumps were not in service.
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,We,currentlyLhave OI&E. concurrence to proceed from the:_ existing ^ power leve,l; iof75%fullpowerfto_90%fulllpower. Approval ~for"further~ escalation'Yo~^
1 100% full power is contingent upon resolution of the natural circulation test requirements with NRR.
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7.Our, Company and this_ area of the_,U.nited States,isifacingi,aisevere; shortage!
fof:coaliduesto'the current coal miners'Tstrikel Due.to this. reason.,it is r
kisealised; to conserve the remaining low coal reserves 'at'the coal-fire stations.
b THE TOLEDO EO! SON COMPANY EDISON PLAZA 300 MAOISON AVENUE TOLEDO. OHIO 43652 N k3% [
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Mr. Richard C. DeYoung Page 2 February 13, 1978 Serial No. 415 Accordingly, it is our desire to increase the power level of the Davis-Besse Unit 1 to 100% full power as soon as possible af ter the 90% plateau steady state testing is complete.
Our current schedule is to increase to 90% on Tuesday, February 14, 1978, and complete the steady state testing on Thursday, February 16, 1978.
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heco_nsideredj and that we be relieved of this requirement.tWeJequ x
If, however, your reevaluation would show that a test is desirable, we request your approval to proceed to 100% power level and conduct the test at the first opportunity after the current coal crisis is alleviated.
We feel that this is fully justified since our evaluation, supported by B&W, shows that the Davis-Besse Unit 1 configuration is more conservative than the Oconee configuration which was proven by prototype natural circulation test.
This action would impose no risk on the health and safety of the public and will help to mitigate an existing shortage of coal supplies, which, if it continues, could result in serious consequences regarding the public health and safety.
Yours very truly, Lowell E. Roe Vice President Facilities Development LER.r Copy:
Mr. James G. Keppler Regional Director, Region III Directorate of Regulatory Operations U.S. Nuclear Regulatory Operations 799 Roosevelt Road Glen Ellyn, Illinois 60137 fjf a=
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