ML20215J345

Application for Amends to Licenses NPF-11 & NPF-18,allowing Storage of Fuel in Either Unit Fuel Pool as Originally Intended W/Connected Fuel Pool Design.Fee Paid

ML20215J345
Person / Time
Site:	LaSalle
Issue date:	06/16/1987
From:	Allen C COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
Shared Package
ML20215J347	List: ML20215J345 ML20215J358
References
NUDOCS 8706240405
Download: ML20215J345 (4)

Text

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7 '.  ; Commonwealth Edison 4 One Firc: National Plaza. Chicago, Illinois

• / Address Reply to: Post Office Box 767 Chicago, Illinois 60690 0767 June 16, 1987 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

LaSalle County Station Units 1 and 2 Proposed Amendments to Technical Specifications for Facility Operating Licenses NPF-ll and NPF-18 NRC Docket Nos. 50-373 and 50-374 References (a): LaSalle County Station UFSAR Section 9.1, Fuel Storage and Handling (b): Federal Register Vol. 51 No. 44 dated Thursday, March 6, 1986.

Dear Sir:

Pursuant to 10CFR 50.90 Commonwealth Edison proposes to amend Facility Operating Licenses NPF-ll and NPF-18. This amendment is being submitted for your staff's review and approval and is in accordance with references (a) and (b).

The amendment requested will allow the storage of fuel from either unit in either fuel pool as originally intended with the connected fuel pool design. l This capability is needed to extend the time (number of cycles) for which it will be possible to accomplish unloading of all the core fuel assemblies when required for maintenance. In addition this change will minimize radiation exposure during installation of the high density fuel racks when they are licensed for use at LaSalle.

Attachment A provides an introduction and discussion. Attachments B and C provide copies of the changes to be made to the Facility Licenses.

Coremonwealth Edison has reviewed this document and finds that no significant hazards exists. This review is documented in Attachment D.

A review was made of Financial Protection Requirements and Indemnity Agreements in accordance with 10CFR 140 with respect to this requested amendment. No change is required as the existing LaSalle indemnity agreement containscoverageforbothUnitOne(NPF-ll)andUnitTwo(NPF-18) Licenses]#

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We request approval for this change by mid September if possible. l The effective date would be 30 days following issuance, j Cotamonwealth Edison is notifying the State of Illinois of our i request for this amendment by transmitting a copy of this letter and attachments to the designated state official.

In accordance with 10 CPR 170, a fee remittance in the amount of

$150.00 is also enclosed.

If you have any additional questions regarding this matter, please contact this office.

[y t y yours, C. M. Allen Nuclear Licensing Administrator ,

1 Attachments cc: Paul Shemanski - NRR Regional Administrator - RIII NRC Resident Inspector - LSCS M.C. Parker - IDNS 3215K

i ATTACHMENT A TECHNICAL SPECIFICATION CHANGE REOUEST LASALLE COUNTY STATION UNITS 1 AND 2 INTRODUCTION Commonwealth Edison Company is requesting amendments to the Unit 1 and Unit 2 Operating Licenses'of LaSalle County Nuclear power Station, NPF-11 and NpF-18, respectively, to' permit the fuel pool for each unit to receive and store spent fuel from either unit. presently, only spent fuel from Unit 1 may be stored in the Unit 1 fuel pool, and only spent. fuel from Unit 2 may be stored in the Unit 2 fuel pool. This is in accordance with section 2.B.5 .l of the present licenses which state, " pursuant to the Act and 10 CFR Parts I 30,'40, and 70, to possess, but not separate, such byproduct and special nuclear materials as may be produced by the operation of the facility." The j word " facility" is defined as the unit for which that license is applicable, j l

DISCUSSION l

Spent fuel storage space at LaSalle.is supplied in the spent fuel pool for-  !

each unit, with each pool capable of storing 1120 fuel assemblies (Technical Specification 5.6.3). The spent fuel pools are connected, via the transfer pools (canals) and the cask well vault, thus allowing underwater transfer of spent fuel from one pool to another with no significant safety consequence.

presently, the fuel pool of each unit contains the discharged assemblies from Cycle 1 (i.e., 232 Unit 1 spent fuel assemblies in the Unit 1 fuel pool and 224 Unit 2 spent fuel assemblies in the Unit 2 fuel pool). Due to the fact that LaSalle will lose full core reserve capacity after the second refueling outage for'each unit, Commonwealth Edison is planning to install high density spent fuel racks in the Unit 2 spent fuel pool during the second half of 1987. Commonwealth Edison also plans to perform a similar modification on the Unit 1 fuel pool sometime around 1992. In order that personnel exposures for the Unit 2 rerack job be kept "As Low As Reasonably Achievable, " LaSalle must transfer the Unit 2 spent fuel from the Unit 2 fuel pool storage racks, through the transfer canal, to the Unit 1 spent fuel storage racks. However, as worded, section 2.B.5 of the Unit 1 and Unit 2 operating Licenses would not allow the transfer of spent fuel assemblies between units.

The transfer of fuel assemblies from one fuel pool to the other is performed with the fuel handling platform utilizing the main fuel grapple or the  ;

auxiliary fuel hoist, and does not require defeating any fuel handling interlocks. The transfer of fuel assemblies from a fuel pool to the ,

transfer canal and the cask well vault is discussed in the Updated FSAR, l Subsection 9.1.2. Also, potential fuel handling accidents are evaluated in I the Updated FSAR, Section 15.7. Therefore, the handling and transport of j spent fuel between fuel pools are enveloped by previous analyses.

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At the present time, the Unit 1 and Unit 2 fuel assemblies have essentially the same mechanical design, enrichments, and burnup histories. Consequently.

the design bases, as described in the Updated FSAR Subsection 9.1.2 and I Technical Specification Section 5.6, is not compromised by the storage of spent fuel from one unit in the spent fuel pool storage racks of_the other unit. For each future fuel design, the peak reactivity of the fuel assemblies will be evaluated prior to their placement in the spent fuel pool.

Compatibility of the fuel in both spent fuel pools will be verified at that time. This will ensure that the new fuel design will meet storage requirement design bases as described in the Updated FSAR and Technical Specifications.

The proposed Unit 1 and Unit 2 license amendments (see Attachments B and C) modify the following:

- Section 2.B.5 of Facility Operating License NPF-11 is proposed to be revised such that the word " facility" will be deleted and the words "LaSalle County Station Units 1 and 2" be inserted.

- Section 2.B.5 of Facility Operating License NPF-18 is proposed to be revised such that the word " facility" will be deleted and the words "LaSalle County Station Units 1 and 2" be inserted.

CONCLUSION Based on the previous discussion, Commonwealth Edison (LaSalle County Station) proposes that the changes indicated in Attachments B and C for LaSalle County station Units 1 and 2, respectively, be made. Since the Technical Specification and Updated FSAR Design Bases will still be met with these changes, commonwealth Edison requests NRC review and approval of the proposed  !

Units 1 and 2 operating license amendments.

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