ML20128D834
| ML20128D834 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 11/26/1973 |
| From: | Reid R US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Ziemann D US ATOMIC ENERGY COMMISSION (AEC) |
| References | |
| NUDOCS 9212070398 | |
| Download: ML20128D834 (1) | |
Text
UNITED STATES
,('
i ATOMIC ENERGY COMMISSION e
l l 'l W ASHINGTON, D.C. 20$4l
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November 26, 1973 Files (Docket No. 50-263)
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.J.giemann, Chief, ORB #2,L d /s Q.L+4 W ADDITIO AL CAL (1)LATIONS OF THE MAXIMUM All0WABLE AVERAGE PLANAR LINEAR llEAT GENERATION RATE CURVE FOR TIIE MONTICL LLO REACTOR (NORTilERN STATES POWER COMPANY)
In response to our letter of October 26, 1973, f4rthern States Power Company (NSP) has provided, in a letter dated November 5,1973, the results of calculations of the maximum allowable average planar linear heat generation rate (MAPLilGR) for fuel segment exposures beyond 15,000 mwd /t. The curves of MAPLilGR provided in General Electric Topical Report NEDH-10735, Supplements 6, 7, and 8 were based on calculations to fuel segment exposures of 15,000 mwd /t. The results of the calculations to 25,000 mwd /t show that for the fuel initially loaded into the reactor, no changes to the MAPLilGR currently in effect are required. For the 20 fuel assemblies of reload 1, the MAPLilGR at 15,000 mwd /t was not changed as a result of the additional calculations.
The reload 1 fuel will not reach a fuel segment exposure of 15,000 mwd /t prior to the termination of fuel cycle 2 in the spring of 1974.
On the basis of the above, the current MAPLilGR limits of the Monticello
'lechnical Specifications are adequate until the start of fuel cycle 3.
Since General Electric plans to submit a new fuel densification model in December 1973 which will likely result in changes to the MAPLl!GR l
limits and since MAPLilGR limits will be required for reload 2 fuel prior to the start of fuel cycle 3, it is concluded that no changes to the current MAPLilGR technical specf fications for the Monticello reactor are required at this time.
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-rt W. Reid Operating Reactors Branch #2 Directorate of Licensing cc:
L. Mayer, NSP AEC PDR Local PDR D. J. Skovhon, L:0R T. J. Carter, LIOR D. L. Ziemann, L 0RB #2 J. J. Shea, L:0RB #2 R. W. Reid, L: ORB #2 llE'// t/
R. M. Diggs, L 0RB #2
- kV 9212070398 731126 PDR ADOCK 05000263 p
PDR 1