ML20149H725

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Forwards Request for Addl Info Re Rev 24 to FSAR Re Storage of Oconee Fuel at McGuire Facility
ML20149H725
Person / Time
Site: McGuire, Mcguire  Duke Energy icon.png
Issue date: 12/29/1977
From: Benaroya V
Office of Nuclear Reactor Regulation
To: Parr O
Office of Nuclear Reactor Regulation
Shared Package
ML20149H714 List:
References
TAC-57316, TAC-57317, NUDOCS 8802220075
Download: ML20149H725 (4)


Text

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Docket Nos.:

50-369 50-370 MEMORANDUM FOR:

Olan D. Parr, Chief, Light Water Reactors Branch, DPM FROM:

Victor Benaroya, Chief. Auxiliary Systems Branch, DSS

SUBJECT:

REQUEST FOR ADDITIONAL INFORMATION - STORAGE OF OCONEE SPENT FUEL IN MCGUIRE FACILI~.Y Plant Name:

McGuire Nuclear Station, Units 1 & 2 Licensing Stage:

0L Docket Numbers:

50-369/370 Milestone Number:

N/A Responsible Branch:

LWR No. 2 Project Manager:

R. Birkel Requested Completion Date:

N/A In their Revision 24 of the FSAR, the applicant proposed to store the Oconee spent fuel in the McGuire facility and use a special tool to handle the Oconee fuel. We have examined those portions of the FSAR for which ASB has primary review responsibilities and conclude that we need additional informatior. to complete our evaluation. The attached request for additional infomation also includes a request (item b) from SEB and AAB, which have secondary review responsibility.

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' 'ho} W Victor Benaroya, Chief Auxiliary Systems Branch Division of Systems Safety

Enclosure:

As stated cc:

S. Hanauer R. Mattson R. Boyd J. Glynn R. Birkel R. Hartfield D. Bunch I. Sihweil G. Chipman C. Tan D. Fischer P. Matthews Leuna 8802220075 780104 PDR ADOCK 05000369 i

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AUXILIARY SYSTEMS BRANCH REQUEST FOR ADDITIONAL INFORMATION MCGUIRE NUCLEAR STATION, UNITS 182 DOCKET NOS. 50-369/370 l

l 10.24 a.

Ocmonstrate that the insertion of the proposed spacer

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(9.1.4) in the storage rack will not block or restrict the l

fluid flow necessary for spent fuel decay heat removal.

b.

Demonstrate that the location and method of attaching the 5-1/2" spacers in the McGuire fuel racks do not nullify the McGuire fuel rack seismic Category I design.

The effect of gaps, sloshing water, and increase of effective mass and damping due to submergence in water

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should be considered. Provide drawings to show the location and means of attaching the spacer in the storage rack, c.

Describe the measures that will be taken to assure that only Oconee fuel assemblies can be stored in the storage rack locations where the 5-1/2" spacers are inserted, and how to prevent McGuire fuel being stored in such loca-tions inadvertently.

d.

Discuss the adverse consequences of storitig the McGuire fuel assemblies in location which are allocated for Oconee

'8 fuels, i.e., locations where 5-1/2" spacers are attached.

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10.24 Discuss the consequences if one or more of the 5-1/2" l

l spacers were not in place when the Oconee fuel bundle is inserted into a spent fuel rack.

e.

Indicate the maximum quantity of Oconee spent fuel (RSP) assemblies that will be stored in the McGuire facility.

Will there be sufficient storage space for emergency

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unloading of an entire McGuire cone following i ts startup?

f.

Demonstrate that the spec m fuel handling tool for Oconee fuel will have the same seismic and quality group classification as McGuire fuel handling equipment.

In addition, demonstrate that the special handling tool is capable of holding its load during a seismic event.

g.

Describe the hoist which will be used to handle Oconee spent fuel assemblies.

Demonstrate that the maximum uplift force of the hoist will not exceed the design limit of the McGuire spent fuel storage rack or the l

Cconee spent fuel assembly.

h.

You indicate that a portion of the Oconee fuel assembly would extend above the fuel rack when stored in the McGuire facility.

Frevide the results of en analysis

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indicating the expected amount of fuel damage as a l

result of dropping either a McGuire or Oconee fuel 1

bundle onto the portion of the Oconee fuel bundle extending above the fuel racks in the spent fuel.

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