ML20153F502

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Provides Addl Info on Proposed Spent Fuel Pool Rack Mods. Formal License Amend Application,Proposed Tech Spec Changes & Complete Safety Analysis Rept Will Be Provided.Rev 0 to SAR Encl
ML20153F502
Person / Time
Site: Millstone Dominion icon.png
Issue date: 05/05/1988
From: Mroczka E
NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20153F505 List:
References
B12844, NUDOCS 8805100351
Download: ML20153F502 (2)


Text

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NORTHEAST UTILITIES o.n.r.i Ort.c.. . som.n sir..i. e.,nn. Conn.ci,ce I fORTFORD, CONNECTICUT 06141-0270 t <L = = = . = amnes-s0*

May 5, 1988 Docket No. 50-245

. B12844 Re: 10CFR50.90 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Gentlemen:

Millstone Nuclear Power Station, Unit No.1 Information on Proposed  :

Soent Fuel Pool Rack Modifications J Northeast Nuclear Energy Company (NNEC0), licensee for Millstone Unit No.1, is planning a project to increase the storage capacity of the Unit No. I spent fuel pool, in this submittal, in order to expedite NRC review, NNEC0 is providing the NRC Staff with initial information on the proposed project. A formal license amendment application, proposed technical specification changes, and a complete Safety Analysis Report will be submitted shortly.

To briefly summarize, Millstone Unit No. I went into commercial operation in 1970, and has undergone eleven refueling outages since that time. A total of 1732 fuel assemblies have been discharged into the Unit No.1 spent fuel pool.

The present spent fuel storaggapacity is 2184 assemblies. As described in a letter dated June 24, 1987, NNECO presently maintains full core rer.orve off-load capability (580 assemblies) by keeping a standby 152 cell rack module for immediate emplacement, if necessary, in the cask laydown area.

The proposed project would increase the storage capacity of the Millstone Unit No. I spent fuel pool to 3229 fuel assemblies, plus 20 defective fuel containers. The project would thus eliminate the need for the temporary rack and would provide spent fuel storage capacity, with full core discharge capability, until approximately 1999.

The proposed project would specifically add ten new high density rack modules to the Hillstone Unit No. I spent fuel pool. These racks are not unlike high density racks installed at other nuclear power plants, utilizing a neutron absorption poison to prevent criticality. The racks will be free standing, self supporting and structurally qualified for postulated se:smic events. The existing rack modules, which will remain in the pool, have also been qualified as non-impacting free standing racks.

0 h0 (1) E. J. Hroczka letter to U.S. Nuclear Regulatory Commission, Document g(

Control Desk, "Contingency Fuel Storage Rack" (B12565), dated June 24, 1987.

8805100351 080505 PDR ADOCK 05000245 P PDR

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U.S. Nuclear Regulatory Commission B12844/Page-2 May 5, 1988 Attached is Revision 0 of NNEC0's Project Description and Safety Analysis Report for the project. This initial revision of the report provides the NRC Staff with the majority of analyses and information necessary in order for it to begin its review of the proposed project. NNECO is providing the information at this time in order to expedite NRC approval. NNECO currently plans to complete the capacity expansion process prior to the.1989 (Cycle 12) outage in order to ensure full core discharge capability for Cycle 13 operation. That outage is presently scheduled for the first quarter of 1989.

To complete the physical work before the 1989 outage, work would have to commence by approximately September 1, 1988.

Revision 0 of the Safety Analysis Report is essentially complete except for certain structural analyses (Section 6.12). It'should be noted, however, that Revision 0 has also r.ot been formally reviewed by the Plant Operations Review Committee and the offsite Nuclear Review Board. Some changes may result from that process. The remaining structural analyses are currently expected to be completed by the end of May, 1988. At that time NNEC0 will complete all necessary reviews and submit a revised Safety Analysis Report. NNEC0 will also submit its formal license amendment application, including its proposed technical specification changes and its evaluation concerning the issue of no significant hazards consideration. NNECO anticipates that the proposed amendment will involve no significant hazards consideration.

We recognize that this contemplated review and approval schedule is an ambitious one. Accordingly, NNECO requests that a meeting be held with the NRC Staff within the next few weeks to discuss this project and the review and implementation schedule.

We . trust that you will find the attached information satisfactory and will give the matter your prompt attention. We, of course, remain available to assist you in the expedited review of this matter. If there are any questions, or you desire a meeting, please contact us.

Pursuant to 10CFR170.12, enclosed with this review request is a check for

$150.00.

Very truly yours, NORTHEAST NVCLEAR ENERGY COMPANY E. J. # c:zka /J SenioV Vice Prest'd ent cc: W. T. Russell, Region I Administrator M. L. Boyle, NRC Project Manager, Millstone Unit No. 1 W. J. Raymond, Senior Resident Inspector, Millstone Unit Nos. 1, 2 and 3 L