ML20203F333

Provides Detailed Capacity Projections for Pbaps,Units 2 & 3 & 7201027,fuel Pools,Which Supports Licensee Basis for Need to Load Nine TN-68 Storage Casks Prior to July 2001

ML20203F333
Person / Time
Site:	Peach Bottom, 072*****
Issue date:	02/13/1998
From:	Mitchell T PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS)
References
NUDOCS 9802270263
Download: ML20203F333 (4)

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• - a Thomas N.Mitchell g 7,10 M Vce President

• g Peach Bottom Atorixc Power StN

-y f PECO NUCLEAR escor>erovce e ev 1848 Lay Road A Unit of PEOO Energy Detta.PA 17314 9032 717 456 4000 Fax *il7 456 4243 10CFR 72.4 February 13,1998 Dire 1or Office of Nuclear Material and Safeguards Nuclear Regulatory Commission Washingtort D.C.20555-0001

Subject:

Peach Bottom Atomic Pcwer Stabon Fuel Pool Capacity Projections in Suppcrt of Emmption to the Fabrication Requirementa in 10CFR 72.234(c) for Nine TN-68 Casks Refe ences

1) TN-68 Dry Storage Cask Safety Analysis Report, Rev. 0 (Docket No. 72-1027

2) Le,1er, T. Neider, Transnuclear, Inc., to Director, Office of Nuclear Matenal and Safeguards, USNRC, "Emmption to the Fabncation Requirements in 10CFR 72.234 (c) for the TN-68 Cask,"

dated 1/23/98

3) Letter, T.N. Mitchell, PECO Nuclear, to Director, Office of Nuclear Material and Safeguards, USNRC, "Emmption to the Fabricatica Requirements in 10CFR 72.234 (c) for the TN-68 Cask.'

dated 1/29/98 l

Dear Sir,

On January 23,1998, Transnuclear submitted the Reference 1 Safety Analysis Report for the TN-68 Dry Spent Fuel Storage Cask to the NRC for review, approval, and issuance of a Certificate of Compliance (C of C) under Subparts K and L of 10CFR 72. Concurrent with this submittal, Transnuclear, Inc. requested that the NRC issue an emmption to 10CFR 72.234(c) to allow fabncahon of nine TN-68 casks for PECO Nuclear prior to the issuance of the TN-68 C of C (Reference 2). In Reference 3 PECO Nuclear submitted supplemental information to clarify PECO Nuclear's basis for the exemption request. In this submittal, PECO Nuclear is providing detailed capacity projections fer the Peach Bottom Units 2 and 3 fuel pools. This information supports the basis for our need to load nine TN-68 storage casks prior to July of 2001. shows PECO Nuclear capacity projections for the Peach Bottom Units 2 and 3 spent fuel pools, assuming no supplemental dry storage capability. Following receipt of the reload batch in July 2000, the Unit 2 fuel pool will have a full core discharge shortfall of approximately 256 assemblies. No less than four TN-68 casks will ham to be loaded prior to delivery of this reload to maintain full core offload capability. The Unit 3 shortfall resulting from delivery of the reload batch in July of 2001 will be approximately 313 assemblies. Loading of another five casks prior to delivery of this reload will, therefore, be required to maintain Unit 3 full core discharge capability.

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Noie that these wet storage projections are conservatnely based on restoration of all available rack locations and a nominal reload batch size of 292.

The overall fabncebon schedule for TN48 casks is approamately 20 months, as described in references 2 and 3. Delivery of the last five casks would be required no later than June of 2001 to preserve full core discharge capability on Unit 3. Fabricahon of these casks would, therefore, have to commence in October of 1999, approdnately seven months in advance of the epected issuance of the TN48 Certificate of Compliance in April of 2000.

PECO Nuclear is appreciahve of your efforts to date concoming this exemption request and respectfully requests your attention to this addibonal informatran if you have any questions, please feel free to contact me or a member of my staff.

Sincere'y, 4

Thomas N. Mitchell Vice President - Peach Bottom Atomic Power Station PECO Nuclear ec:

H. J. Miller, US NRC, Administrator, Region I W. T. Hennck, Public Service Electnc & Gas R. R. Janati, Commonwealth of Pennsylvene A Mar:Murtray, US NRC, intertn Sernor Readent ingw*<

C. Andenon, USNRC, Region i T. M. Mesack, Atlanbc Electric R. l. McClean, State of Maryland A F. Kirby,DelMarVa Power E. J. Leeds, US NRC, Spent Fuel Prgect Office S. Whaley US NRC, Spent F'.el Project Office T. Neider, Transnuclear, irr;.

J. Williams. USNRC, Ne, sear Reactor Regulation

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D. M. Smith 63C-3, Chesterbrook G. R. Raney 63C-3, Chesterbrook

. T. N. Michell SMBd-9, Peach Bottom E.W. Callan Sfe4-6, Peach Bottom

- Correspond:mce Control Program 61B-3, Cnesterbrook J.B.Couon 62C-3, Chesterbrook E. J.Cullen S23-1, Main Omoe G. D. Edwards A4-1S, Peach Bottom M. P. Gallagher Sf24-2, Peach Bottom J. G. Hufnagel 62A-1, Chesterbrook G. A Hunger P41,Chesterbrook

- G. L Johnston

~ B3-2, Peach Bottom R. A Kankus 3-1, Chesterbrook G. J. Lengyel A,-4S, Peach Bottom L MacEnee Pd-TC, Peach Bottom C. J. McDermott S13-1, Main Offlee NCB Secretary (11) 62A-1, Chesterbrook -

T.J. Neseen 53A-1,Ct.;

ticok OEAP Cooros'ator 62A-1, Chesterbrook L

February 13,1998 Peach Bottom Units 2 and 3 Fuel Pool Inventory Projections (Values reflect fuel pool spaces)

Unit 2:

Balance Pool C apacity(Licensed) 3819 Pool Capacity (Available)

• 3812 3812 Core Capacity 764 3048 Current Loading 2720 328 1998 Reload Batch (July,1998) 292 36 "

2000 Reload Batch (July,2000) 292 (256)

TN-68 Casks Required (Prior to July 2000) 4 Available pool capacity reflects t".e maximum possible spaces available assuming: 1) recovery of 71 storage locations which are currently unusable due to damage or temporary obstruction due to rat merkers or storage of non-fuel ecuipment, and 2) permanent obstruction of 7 cells by RHR piping.

36 wet rack locations would be available assuming recovery of the 71 storage locations referenced in the above note, At least 35 of the 71 locations would need to be recovered to assure minimum full core offload capability.

Unit 3:

Balance Pool Capacity (Licensed) 3819

- Fool Capacity (Available)*

3812 3812 Core Capacity 764 3048 Current Loading 2777 2 71 1999 Reload Batch (July,1999) 292 (21) "

2001 Reload Batch (July,2001) 292 (313)

TN-68 Casks Required (Prior to July 20 -

5 Available pool capacity reflects the maximum possible spaces available assuming: 1) recovery of 109 storage locations which are currently unusable due to damage or temporary obstruction due to rack markers or storage of norkfuel equipment, and 2) permanent obstruction of 7 cells by RHR piping.

All out-of-service wet rack locations would have to be restored to service and the 1999 reload batch size would have to be reduced to 271 (or less) to assure full core discharge starting in July 1999.

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