1CAN068301, Forwards Bounding Analytical Assessment of NUREG-0630 Models on LOCA Kw/Ft Limits, Reflecting Use of Flecset Heat Transfer Correlation as Compensating Model to Reduce Impact of NUREG-0630 Models

From kanterella
Jump to navigation Jump to search
Forwards Bounding Analytical Assessment of NUREG-0630 Models on LOCA Kw/Ft Limits, Reflecting Use of Flecset Heat Transfer Correlation as Compensating Model to Reduce Impact of NUREG-0630 Models
ML20076H264
Person / Time
Site: Arkansas Nuclear Entergy icon.png
Issue date: 06/08/1983
From: John Marshall
ARKANSAS POWER & LIGHT CO.
To: Stolz J
Office of Nuclear Reactor Regulation
Shared Package
ML20076H267 List:
References
RTR-NUREG-0630, RTR-NUREG-630 1CAN068301, 1CAN68301, NUDOCS 8306160493
Download: ML20076H264 (1)


Text

- _

  • -o ARKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 LITTLE ROCK. ARKANSAS 72203 (501) 371-4000 June 8, 1983 1CANf6330:

Director of Nuciear Reactor Regt lation ATUl: Mr. J. F. Stolz, Chicf Openting Reactors f ranc.h (J.

Division of Licensing U. S. Nuclear Regu'atory Comenission

'. fashhgtc :, DC 2C655

SUBJECT:

Arna m s Nuclear One - Unit t Dct.ket Wo. 50-313 Lictnu No. 6PR-51 ilDREG-C630 - Sounding Analytual Assessment With use of FLECSE7 Gentlemen:

By our Being Prepared by B&W|letter dated May 18, 1983]] (OCAN058304), AP&L indicated that a revised report concerning the impact of NUREG-0630 was being prepared by B&W. The report now reflects the use of the FLECSET heat transfer correlation as a compensating model to reduce the impact of the NUREG-0630 models. The report is attached for your information.

As indicated by our previous letter, the FLECSET results offset the potential linear heat rate penalty et the 2 foot and 4 foot elevations. as .

indicated by the NUREG-0630 bounding analysis. Althoughthisanalysisidid; not conclusively demonstrate that the potential NUREG-0630 impact at the 6 foot level was completely offset, such an impact would not result in a change in the plant operating limits since these limits are governed by the lower core elevations.

Justification for the use of FLECSET, via benchmarks to experimental data and comparative sensitivity studies, will be provided by August 1983, to supplement the bases for the results provided in the attached report.

Very truly yours, f

% . N.

John R. Marshall Manager, Licensing JRM:CHT:sl l

Attachment W 8306160493 830608 lI PDR ADOCK 05000313 P PDR McMeen vioote sours uritiries sysTeu

[ ,

r y-L k

f 3

/

[

i"!

r g

g y

. v.

j {' . ,.,

f'H'd.  ;. 7 L.;.,

2 i _

l ,

I ,

Engineering Services P

Babcock &Wilcox a McDermott company

. - - _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ . _ _ - _ . _ . _