ML20024G815
| ML20024G815 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 06/03/1975 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Mayer L NORTHERN STATES POWER CO. |
| References | |
| NUDOCS 9104300440 | |
| Download: ML20024G815 (3) | |
Text
i r-DISTRIBUTION NRC PDR Local PDR JUN 0 31975 Docket ORB #2 Reading KRGoller TJCarter DELD Docket No. 50-263 OIGE (5)
DLZiemann BCBuckley, RMDiggs Northern States Power Company JRBuchanan, ORNL A1TN:
Mr. L. O. Mayer TBAbernat):y, DTIE Director of Nuclear Support SVarga' Services ACRS (14) 414 Nicollet Mall Dross:
Minneapolis, Minnesota 55401 TNovak Gentlemen:
The NRC staff is reviewing your license amendment dated March 12, 1975 with regard to the proposed adoption of the GETAB/GEIL heat flux correlation for the Monticello Nuclear Generating Plant in place of the currently approved llench-Levy correlation. We find that additional information, described in the enclosure, is required for the staff to complete its evaluation.
To maintain our review schedule, you are requested to provide the information described in the enclosure in thrae signed and notarized originals and thirty-sevon additional copies within 30 days of receipt of this letter.
Sincerely, Oricinal Sihned by:
Dennic L. Zienann Dennis L. Ziemann, Chief Operating Reactors Branch #2 Division c' Reactor Licensing
Enclosure:
ilequest for Additional Information ec: see next page c7104300440 Q$6 3 0 263 7.8/
DR
/4 DOCK ppg f/
RL:0RB,#2,
RL:0R[#2 P
BCBuc_ j'yfynKlerc,ah
_DLZiemann sva a u,,
..fl...f.
.f-
-... ~... -
-~.
onve >
e.
Foran AEC 318 (Rev. 9-53) AICM 0240 tr u. e, oovs anae ant paintino orrec as is74.eae.tes 1
.m.
._.1 4 June 3, 1975 Northern States Power Company cc :
The Environmental Conservation Arthur Renquist, Esquire Library Vice President - Law Minneapolis Public Library Northern States Power Company 300 Nicollet Mall 414 Nicollet Hall Minneapolis, Minnesota 55401 Minneapolis, Minnesota 55401 Gerald Charnoff Shaw, Pittman, Potts and Trowbridge 910 - 17th Street, N. W.
Washington, D. C.
20036 Howard J. Vogel, Esquire Legal Counsel 2750 Dean Parkway Pdnneapolis, Minnesota 55416 Steve Gadler, P. E.
2120 Carter Avenue St. Paul, Minnesota 55108 Mr. Daniel L. Picker Assistant City Attorney 638 City Hall St. Paul, Minnesota 55102 9
Ken Dzugan, Director
- City of St. Paul Follution Control Services 100 East 10th Street St. Paul, Minnesota 55108 Sandra S. Gardebring Special Assistant Attorney General Counsel for Minnesota Pollution Control Agency 19 35 W. County Road B2 Roseville, Minnesota 55113 Anthony Z. Roisman, Esquire Berlin, Roisman and Kessler 1712 N Street, N. W.
Washington, D. C.
20036 i
e on.
~--
I e
NORTilERN STATES POWER C05tPANY 7
F10NTICELLO NUCLEAR GENERATING PLANT DOCKE1 No. 50-263 REQUEST FOR ADDITIONAL INFORhhTION 1
The APRFI flux scram trip setting and rod block equations in l
1.
Technical Specification 2.3 are the same as those used with the llench-Levy CilF correlation. Either modify the equations or provide justification for retaining the equations based i
3-on critical heat flux rather than using units consistent with the GEXL/GETAB Analysis. The trip setting and rod block equation constants for the S x 8 fuel are different from those used for 7 x 7 fuel.
Explain the difference.
i I
Does the relative bundle to bundle power distribution used j
2.
in the GETAC statistical analysis for Flonticello remain fixed l
throughout the series of Flonte Carlo simulations? If not, how does it vary, and why? Show that the peak radial power factor used is the worst case that could occur during the f
cycle.
I 4
I 9
4 l
)
l t
e i
1 m
- -