ML17317B306
| ML17317B306 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 05/30/1979 |
| From: | Schwencer A Office of Nuclear Reactor Regulation |
| To: | Dolan J INDIANA MICHIGAN POWER CO. |
| References | |
| NUDOCS 7907130209 | |
| Download: ML17317B306 (4) | |
Text
'ISTRIBUTION
> 0 jgyg Docket files 50-315 TERA 5lAY 3 0 and 6
NRC PDR (2)
Local PDR NRR Rdg ORBl Rdg A. Schwencer D; Wigginton C. Parrish V. Stello D. Eisenhut R. Vollmer B. Grimes T. J. Carter W. T. Russell I&E (3)
OELD
Dear Hr. Dolan:
ACRS Buchanan In review of your April 16, 1979 submittal of the structural analysis of Docket Nos 0-315 and 50-316 I'ir. John E. Dolan, Vice President Indiana and Michigan Power Company P. 0.
BoX 18
,B(k!ling Green Station New York, New York 10004 questions should be addressed by IN<PC and submitted. to this office within 30 days upon receipt of this letter.
Sincerely, the D. C. Cook, Unit Nos.
1 and 2 spent fuel storage pool expansion, we have identified areas where we require additional information.
The attached
Enclosure:
guestions-cc:
w/enclosure See nevt page Original Signed BV A.- Schwencer, Chief Operating Reactors Branch 0'1 Division of Operating Reactors OJPICOW QQRHANCW OATEN'OR:ORB1 DWjgginton,j
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%p*~4 Docket-Nos. 50-315 and 50-316 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 May 30, 1979 Mr. John E. Dolan, Vice President Indiana and Michigan Power Company P. 0.
Box 18
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Bowling Green Station New York, New York 10004
Dear Mr. Dolan:
In review of your April 16, 1979 submittal of the structural analysis of the D. C. Cook, Unit Nos.
1 and 2 spent fuel storage pool expansion, we have identified areas where we require additional information.
The attached questions should be addressed by I8MPC and submitted to this office within 30 days upon receipt of this letter.
Sincerely,
Enclosure:
Iluestions cc:
w/enclosure See next page A. SChwencer, Chief Operating Reactors Branch 81.
Division of Operating Reactors C
D, C,
COOK SPENT PUEL POOL EXPANSION (E(UEST FOR ADDITIONAL INFORNTION DIVISION OF OPERATING REACTORS 1.
Provide the number of modules and the size of each module to be installed in the spent fuel pool.
Include a drawing showing the arranoement of the racks in the pool.
2.
Describe the procedures used during the installation of the new racks to prevent damage to existing racks containing spent fuel.
Include description and details of any temporary seismic bracing of the existing racks required during the installation.
3.
4.
5.
6.
7.
8, Provide damping values used in the non-linear analysis and include justification for any values higher than those specified in the FSAR.
Provide details of the artificial time history showing a Fourier decomposition including a phase angle plot, Also, specify which floor response spectra was used in the analysis.
Discuss the provisions employed to limit the maximum height of a fuel assembly passing over a rack assembly to 15 inches.
Describe the provisions employed to prevent movement of heavy objects over the spent fuel assembl jes.
Include a description of all items which may be moved oyer the spent fuel assemblies.
Provide the maximum crane uplift force used in the analysis and describe how it was determined, Discuss the first mode from the SAP IV analysis and provide a sketch of the mode shape, 9.
Provide details of the rack base and support feet.
10.
12.
'3.
Provide details on how the hydrodynamic mass effects were included in the analysis.
Discuss whether these effects were included in the elastic and non-linear analysis.
Discuss the effects of the increased loads due to the new racks structures on the fuel pool.
Discuss the eff'ectsof the seismic shear loads on the fuel pool liner in the context of the proposed modification.
Discuss the effects of the fuel assembly drop on the fuel pool, floor and liner in the context of the proposed modification.