ML20065L153

Forwards Rev 10 to LaSalle County Station Units 1 & 2 UFSAR, Reflecting as-built Condition of Plant as of 931017.Summary of Changes to Facility Described in Sar,Made Under 10CFR50.59,not Previously Submitted to NRC Also Encl

ML20065L153
Person / Time
Site:	LaSalle
Issue date:	04/12/1994
From:	Benes G COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20065L159	List: ML20065L153
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NUDOCS 9404200315
Download: ML20065L153 (5)

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,_ Commonwealth Edinn LaSalle County Nuclear Station 2601 N. 21st. Rd.

Marseilles, Illinois 61341 Telephone 815/357-6761 April 12, 1994 r

6 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

LaSalle County Station Units 1 and 2 Updated Final Safety Analysis Report (UFSAR)

Facility Operating Licenses NPF-11 and NPF-18 NRC Docket Nos. 50-373 and 50-374 References (a) December 15, 1980 letter from D.G. Eisenhut (USNRC) to All Licensees (b) April 5, 1993 letter from M.B. Depuydt to U.S. Nuclear Regulatory Commission.

(c) LaSalle Annual Report Gentlemen:

In accordance with the re.qtirements of 10 CFR 50.71(e) (4) , Commonwealth Edison submits Revision 10 to the Updated Tinal Safety Analysis Report (UFSAR) for the LaSalle County Station. Units 1 and 2 have a common FSAR and, therefore, this revision contains information for both units.

The UFSAR has been prepared in accordance with guidance approved by the May 9, 1980 Federal Register Notice 10 CFR 50.71(e) and Reference (a)

Consistent with that guidance, this UFSAR revision has been retained in the original FSAR's format or content to conform with the recommendations contsined in Regulatory Guide 1.70.

Commonwealth Edison has made every effort to identify all relevant information for this revision including modifications to the facility as described in the UFSAR that have been made since the last cubmittal (Reference (b)) In our judgement, the UFSAR accurately reflects the as-built condition of the plant as of October 17, 1993. All changes requiring NRC approval have been reviewed by the NRC (Reference (c)) and all others have safety evaluations on site to document the station's determination that prior approval was not required. Attachment A identifies the changes made under the provisions of 10 CFR 50.59 that were not previously submitted to the NRC, and provides a brief summary of these changes.

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,U .S. NRC April 12, 1994

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C To the best of my knowledge and belief the statements contained in the UFSAR are true and correct. In some respects these statements are not based on my personal knowledge but upon information furnished by Commonwealth Edison ,

employees. Such information has been reviewed in accordance with Company r practice and I believe it to be reliable.

In accordance with the requirements of 10 CFR 50.4 (b) (6) , one signed original and ten (20) additional copies of the UFSAR revisions are provided.

Also, attached is an "Index of Changes" which explains which pages of.the UFSAR must be removed and which revised pages must be inserted.

1 Respectfully, Gat GW nes Nuclear Licensing Administrator f

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Attachments i

SUBSCRIBED AND SWORN to before mef his - day {

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(([W# /NparyTublic MRCthL SEAL LY3N ELLIN GAS 3MM1 NOTARY PUh'. ETATE & ILUNDS MY COM25SION ExNRES 1-24 97

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. cc: J.B. Martin - RIII w/o attachment A.T. Gody, Jr. - Project Manager NRR w/o attachment D.E. Hills - Senior Resident Inspector - LSCS w/o attachment I

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LAP-400-4 I Revision.8 February 3, 1994

, 8 ATTACHMENT B LASALLE COUNTY STATION UPDATED FINAL SAFETY ANALYSIS REPORTfUFSAR) TRANSMITTAL TO ALL LASALLE UFSAR HOLDERS: April 17, 1994 10 Effcctive Date Revision REMOVE the following pages from your controlled copy of the LaSalle UFSAR. INSERT the new pages as indicated. Sign this transmittal form in the space provided for holder below. Return this signed sheet before May 17 to:

Mr. D. G. Trager Administration Department LaSalle Nuclear Station l 2601 North 21st Road Marseilles, IL 61341 If you have any questions or comments, please contact the FSAR-Coordinator at extension 2925, r._

D I l D. J. Ray.

Station Manager LaSalle County Station

/-- / 2L SET NO. HOLDER SIGNATURE DATE 4

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The following is a sammary of changes to the facility which are described in the Safety Analysis Report, made under the provisions of 10 CFR 50.59, not previously submitted to the NRC:

l UFSAR Volume V Chapter 6 - Engineered Safety Features Revision to Section 6.3.2.2.6 to revise the required net positive suction head (NPSH) of the emergency core cooling pumps. This affected on calculations associated with station blackout analysis.

UFSAR Volume VI Chapter 7 - Instrumentation and Controls Administrative change to Section 7.3.6.2 to reflect the as- '

built configuration of the facility. Modifications M01 90-001, M01-1-90-001, M01-1-90-002, and M01-2-90-002 included crankcase gauge additions to diesel generators (DGs) 0, lA, 1B, and 2B. This change clarifies that the gauges are for crankcase pressure indication (as opposed to crankcase vacuum).

UFSAR Volume VI Chapter 8 - Electric Power Revision to UFSAR Section 8.3, to reflect a trip delay time band of 0.1 to 4.0 seconds in the Reactor Protection System (RPS) Electrical Protection Assembly (EPA) Trip Delay Time Requirements. EPA overvoltage, undervoltage, and '

underfrequency setpoints as specified in T(thnical '

Specifications are incorporated.

UFSAR Volume VII Chapter 9 - Auxiliary Systems Revision to UFSAR Section 9.5.4.4 to reflect Technical Specification amendments for Unit 1 and 2 associated with Diesel Generator fuel oil testing standards.

UFSAR Volume VIII Chapter 13 - Conduct of Operations Revision to UFSAR Chapter 13, Section 1 to reflect the relocation of the description of the station and corporate organizations to QA Topical Report CE-1-A, and its parent document, the Commonwealth Edison Company Quality Assurance Manual.

UFSAR Volume VIII Chapter 15 - Accident Analysis Section 15.9, " Loss of All Alternating Current Power (Station Bla ckout)", added to UFSAR to address station blackout.

UFSAR Volume VIII Chapter 15 - Accident Analysis

, Removal of Cycle Specific Information from the UFSAR that is already included in the reload license package of each unit.

This eliminates redundancy of ef fort and reduces the associated administrative burden.

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UFSAR Volume IX Appendix H - Fire Hazards Analysis Update to UFSAR Appendix H, Section 3 Sections H.3.7.1, H.3.7.2, H.3.7.3 and H.3.8.2 (For fire zones 7A1, 7A2, 7A3 and BA2 respectively) of the UFSAR indicated that the floor slabs of these fire areas are three (3) hour rated except for an oversized exhaust stack penetration. These sections are revised to clarify that the exhaust stack penetrations are unrated because of their size. This is consistent with the wording currently indicated in UFSAR section H.3.8.1 (for fire zone 8A1).

UFSAR sections H.3.7.4, H.3.7.5, H.3.7.6, F.3.8.3 and H.3.8.4 (for fire zones 7B1, 7B2, 7B3, 881, and 882, l respectively) indicated that the ceiling of the rooms are j three (3) hour rated except for an oversized exhaust stack i penetration. These sections are revised to clarify that the l exhaust stack penetrations are unrated because of their size. This is consistent with the wording indicated in UFSAR section H.3.8.1 (for fire zone 8A1) . Additional 1Y, UFSAR sections H.3.7.4 (for fire zone 7B1) and H.3.8.3 (for fire zone 8B1) are being revised to indicate which fire zones are i located directly above them. I 1

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