ML20091K807
| ML20091K807 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Browns Ferry |
| Issue date: | 10/13/1978 |
| From: | Check P Office of Nuclear Reactor Regulation |
| To: | Rosztoczy Z Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17139C189 | List:
|
| References | |
| FOIA-84-105 NUDOCS 8406070209 | |
| Download: ML20091K807 (1) | |
Text
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A UNITED STATES y
NUCLEAR REGULTORY COMMISslON U
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WASHINGTON, D. C. 20S58 OCT 131978 MEMORANDUM FOR:
Zoltan R. Rosztoczy, Chief. Analysis Branch, DSS FROM:
Paul S. Check, Chief, Reactor Safety Branch. 00R
SUBJECT:
1.BWR SINGLE-LOOP OPERATIONS 5.
Nine iicensed BWRs submitted information over two years ago requesting authorization for single-loop operations.
Most of the staff review was l,4 completed last year.
The remaining item awaited a revised General Electric submittal of their generic LOCA mod!1 for single-loop operation.
The submittal, NEDO-20566-2, Rev.1 was received in August 1978.
Shortly
{i afterwards on September 14, 1978, the Browns Ferry 1 reactor developed an urgent need to operate with only one recirculation loop. Within three j
weeks, the single-loop operation of Browns' Ferry 1 was licensed at the maximum feasible power (82%).
The action on Browns' Ferry 1 consumed a concentrated application of engineering resources, perturbed schedules
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for other relatively priority items and required Noluntary" overtime.
Since the need for licensed single-loop operations can occur at any time and the next time the response may not be so quick, we are giving higher priority to approving the nine requests outstanding.
Stuart Rubin has the lead on this effort.
We would appreciate a timely completion of the AB review of these portions of NEDO-20566-2, Rev.1 concerning the mo del. <
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i Paul S. Check, Chief Reactor Safety Branch t
Division of Operating Reactors cc:
D. Eisenhut D. Ross P. Norian R. Clark,
J. Hanno,,
C. Ber11n,,ger F. Coffman S. Weiss R. Woods S. Rubin i
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NUCLEAR REGULATORY COMMISSION
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NO3 TO:
G. Lainas, Chief, Plant Systems Branch, DOR f
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(vi Th*RU D. Tendi, Sectica Imader, Plant Systems Branch, DOR gA 'J FROM:
J'. Eurdein, Plant Systems Branch,' DCR SU3 JECT:
STATUS OF N-1 ICOP OPE?ATION REVIZWS/ TECHNICAL ASSISTANCE CO:iTRACT Ccncerning the question cf centinued effort in the review of licensee's requests for Technical Specification (TS)changesfor141lococperatien, it has been decided by the Operating)Reacters Branch 1 Chief, '(!Lr. Sch to cceplete the reviews (IAC pertien for Zion and Beaver Valley.
The reasening being that the reviews for these two plants are well advanced (respensetoquestionshavebeenreceivedfremthelicensee);anditwould be inappropriate to step the reviews before they are ec=pleted. No reviews for cther pes will take place until this effert is given a higher priority by DCR.
The Chief of Cperating Reacters Branch 3 (!L. Ippolito) has sunested we O
centact these licensee's of Ens who initia.u.y sumitten requests in the 4/n Ng Fall of 1976 for TS changes to permit single 1cep cperatien to dete=ine whether or not they still desire this TS modificatien. The original submittals did net include an ECCS analysis with one recirculation Icep out-cf-service. GZ submitted their " analytical model for IDCA with one recircu-latica loop out-of-service" in July 1978, and tha Reacter Sa.fety Branch is presently ec=pleting their review of the model.
Those licensee's who still I want the change will have to update their original sub:i j
GE's most recent analytical IDCA model.
Upen receipt cf this now infomation M
we can, given that our priorities permit, centinue the BE reviews.
1 In the past, it has been necessary to perform en a " crash basis" a review to allcw cper;.tien in the single loop code, as a ene-tir.e-event, for several 52 plants:
Oyster Creek, Erewns Ferry, Big Rock Point, etc.
To avoid these e=ergency quick-turn-around reviews, it is to our advantage to ce=plete the task of W1 loep reviews for BWRs. To this end, it is suggested that ma.agement estabidsh a priority for this task to allcw the work to be ccepleted en a timely basis. These reviews are presently assigned to a techrdeal trY 00 hW wQ bE?
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assistance centracter. If this issue is not resolved, these re.iews will have to be removed from the centract and the mar.pewer reassigned to other tacs.
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. Burdoin Plant Systems Branch Division of Operating Reacters cc T. Ippelito A. Schwencer G. Zech P. Check R. Woods S. Rubin EH
- r. Ke',ern V. Rocney P. Shemanski D. Tc.d J. Burdedr.
E. Reeves D. Wiggingten 0
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