ML20126E779
| ML20126E779 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 05/15/1975 |
| From: | Stello V Office of Nuclear Reactor Regulation |
| To: | Goller K Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9212290320 | |
| Download: ML20126E779 (2) | |
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UNITED STATES NUCLEAR REGULATORY cOMMisslON W ASHINGTON, D. C. 20555 MAY 15 275
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Docket No. 50-263 Karl Goller, Assistant Director for Operating Reactors, RL MONTICELLO - PROPOSED TECH. SPEC. CHANGES TO INCORPORATE GETAB/GEXL (TAR-1516)
Plant Name: Monticello Docket No.: 50-263 Responsible Branch and Project Leader: ORB-2, B. Buckley Technical Review Branch Involved:
Reactor Systemt, Review Status: Additional Information Required i
The Monticello technical specification changes required to change i
from Hench-Levy to GETAB/GEXL thermo-hydraulic limits have been reviewed by the Reactor Systems Branch. Additional information is required to evaluate _ the acceptability of the changes.
The required additional information is identified in the enclosure.
7 Victor Stello, Jr., Assistant Director for Reactor Safety
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Division of Technical Review Office of Nuclear Reactor Regulation l
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Enclosure:
R'equest for Additional Information i
cc:
S. Hanauer F. Schroeder A. Giambusso W. Mcdonald-D. Ziemann B. Buckley-l T. Novak-i W. Hodges 9212290320'750515 PDR -ADOCK 05000263 l
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7 REQUEST FOR ADDITIONAL INFORMATION:
i-ON MONTICELLO TECH SPEC CHANGES (TAR-1516)
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1.
The APRM flux scram trip setting equation isLthe same as that given for 7 x 7 geometry using the Hench-Levy CHF correlation.-
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- The APRM trip setting equations should probably be changed to
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- be consistent with the;new GEXL/GETAB Analysis < as was-done for =
Quad Cities.
Either provide the new form with justification
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for its constants or justify retaining the old form and constants with the new GEXL/GETAB Analysis.
4 Also,- the. APRM flux scram trip. setting-equation for the 8 x-8 fuel is different from that given for 7 x 7 fuel.
Explain the difference.
i-2.
Does the relative bundle to bundle power-distribution used in the GETAB statistica1{ analysis for-Monticello remain fixed j
throughout the analysis? If _ not, how does it ' vary, and why?
If yes, show that the peak radial power-factor used is the maximum obtainable during the cycle.-
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