ML17320B003
| ML17320B003 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 04/06/1984 |
| From: | Varga S Office of Nuclear Reactor Regulation |
| To: | Dolan J AMERICAN ELECTRIC POWER SERVICE CORP., INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| References | |
| NUDOCS 8404230443 | |
| Download: ML17320B003 (5) | |
Text
Docket No. 50-316 April 6, 1984 Mr. John Dolan, Vice President Indiana and Michigan Electric Company c/o American Electric Power Service Corporation 1 Riverside Plaza
- Columbus, Ohio 43216
Dear Mr. Dolan:
et re NRC PDR L PDR ORBgl Rdg DEisenhut OELD EJordan JNGrace Dlligginton CParrish ACRS (10)
SVarga In our review of the Donald C.
Cook Nuclear Station Unit No.
2 reload for Cycle 5, we have identified additional inform'ation which we need.
The specific questions are attached.
Please provide this information within 30 days of the date of this letter.
If you have any questions on this
- subject, please let us know.
The reporting and/or recordkeeping requirements of this letter affects fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.
Sincerely, g+qat slg8~ bf
@even 4. VarEa
Enclosures:
As stated Steven A. Varga, Chief Operating Rectors Branch 0'1 Division of Licensing cc: w/enclosures See next page ORBgl: DL R 81: DL DWigginton;ps V r a 4/4/84 4
84 S
BShe on 84 8404230443 840406 PDR'*DOCK 050003l6" P
PDR.
Indiana and Michigan Electric Company,,'.
Donald C.
Cook Nuclear
- Plant, Units.
1 and 2
cc:
Mr. M. P. Alexich Yice President Nuclear Engineering American Electric Power Service Corporation 1 Riverside Plaza
- Columbus, Ohio 43215 Mr. William R.
Rustem (2)
Office of the Governor Room I - Capitol Building Lansing, Michigan 48913 Mr. Wade Schuler, Supervisor Lake Township
- Baroda, Michigan 49101 W.
G. Smith, Jr., Plant Manager Donald C.
Cook Nuclear Plant Post Office Box 458 Bridgman, Michigan 49106 U.S. Nuclear Regulatory Commission Resident Inspectors Office 7700 Red Arrow Highway Stevensville, Michigan 49127 Gerald Charnoff, Esquire Shaw, Pittman, Potts and Trowbridge 1800 M Street, N.W.
Washington, DC 20036 Honorable Jim Catania, Mayor City of Bridgman, Michigan 49106 U.S. Environmental Protection Agency Region V Office ATTN:
E IS COORDINATOR 230 South Dearborn Street
- Chicago, IL 60604 Maurice S. Reizen, M.D.
Director Department of Public Health Post Office Box 30035
- Lansing, Michigan 48109 The Honorable Tom Corcoran United States House of Representatives Washington, DC 20515 James G. Keppler Regional Administrator - Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road-Gl en.Ellyn, IL 60137 J.. Feinstein American Electric Power Service 1 Riverside Plaza
- Columbus, Ohio 43216
)
UESTIONS ON XN-NF-84-21(P)
D.
C.
Cook 2
LOCA ANALYSIS 1.
The analysis in XN-NF-84-21(P) was performed using a chopped axial cosine power distribution.
This is apparantly based on sensitivity studies previously performed using ENC-WREN IIA model.
Justify the applicability of the power shape study for the EXEM/PWR model.
2.
Please provide average fuel temperatures and pin pressure
- curves, versus burnup, obtained with RODEX2 and used in the D.
C.
Cook 2
analysis.
3.
Justify that the burnup sensitivity study performed for D.
C.
Cook 2
is sufficient to identify the highest peak cladding temperature over the burnup range.
4.
Provide the values utilized, and the basis for, the REFLEX leakage flow model used in the analysis.
5.
Provide the range of calculated parameters which would normally be input to the CRF, quench front, and reflood heat transfer correlations.
If the calculated values exceed the range of the correlations, provide the values utilized in the correlations.
Justify the appropriatness of the values used.
6.
In applying the CFR, quench front and reflood heat transfer correlations of EXEM/PWR, how did you reflect the axial power shape used in the D.
C.
Cook 2 analysis?
Justify the approach taken.
7.
Justify the appropriatness of the effective reflooding velocity (see pg.
35 of NX-NF-82-20(P), Rev.
- 1) as used in the D.
C.
Cook 2 analysis.
8.
Based on our initial review of EXEM/PWR, we have concluded that there is insufficient basis for the correction factors, for local peaking of the hot rod and mixing vanes, which is used in calculation reflood heat transfer coefficients.
Additional justification for this model will be necessary to allow its use in the D.
C.
Cook 2 analysis.
Either provide the additional justification, or provide a revised calculation for D.
C.
Cook 2 wherein the correction factors for local peaking and mixing vanes is not utilized.
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p 4 I
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