Text

Requests Withdrawal of 900315 Application for Amends to Licenses NPF-37,NPF-66,NPF-72 & NPF-77,changing Tech Specs 3.8.1.1 & 4.8.1.1.2 to Clarify How Gradual Loading of Diesel Generator Applied to Minimize Mechanical Stress on Diesel
	ML20058K352
Person / Time
Site:	Byron, Braidwood
Issue date:	06/22/1990
From:	Hunsader S; COMMONWEALTH EDISON CO.
To:	Murley T; NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM), Office of Nuclear Reactor Regulation
References
	NUDOCS 9007050045
	Download: ML20058K352 (2)
	v • d • e

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, , / N) Commonwealth Edison l 1400 Opva Place

[ ( w/ ) Do;;ners Crove,I!linois 60516 b Jne .% .1990 i

Dr. Thomas E. Murley Office of Nuclear Reactor Regulation U.S. Nuclear Regulntory Commission Hashington, DC 20555 Attn: Document Control Desk

Subject:

Byron Station Units 1 and 2 Braidwood Station Units 1 and 2 Application for Amendment to facility Operating Licenses NPF-37, NPF-66, NPF-72 and NPF-77 Appendix A, Technical Specifications EC_Docht_t_Nos.50-45L _50-455. 12-AM_And 50-452 ,

Reference:

(a) July 28, 1987 S.C. hunsader letter to T.E. Murley (b) July 28, 1987 C.M. Allen letter to U.S. NRC (c) March 15, 1990 R. Pulsifer letter to T.J. Kovach (d) June 15, 1990, R.F. Dudley letter to T.J. Kovach Dear Dr. Murley;

In reference (a) pursuant to 10 CFR 50.90 Conmonwealth Edison i I (Edison) proposed to amend Appendix A Technical Specifications of Facility I l Operating Licenses NPF-37, NPT-66, and NPF-72. The proposed amendment requested a change to Technical Specifications 3.8.1.1 and 4.8.1.1.2 to

clarify how the gradual loading of the diesel engine is applied to minimize )

the mechanical stress and wear on the diesel generator. Refsrence (b) provided a similar request for LaSalle County Station and facility Operating !

h Licenses NPF-11 and NPT-18.

The NRC staff issued Amendments 72 and 56 for LaSalle County Station in reference (c), based on reference (b) as well aa five (5) sdditional supplemental letters provided by Edison in response to HRC requests for ,

information.

Reference (d) summarized a verbal NRC sinff request inade on

May 22, 1990, that Edison review the amendments issued for taSalle County Station and determine what actions need to be taken to supplement referente -

(a) for the Byron and Braidwood Stations. Edison has reviewed reference (c) and as a result is withdrawing this request for an emendment for the liyron and .

.Braidwood Stations, By withdrawing this request for a Technical Specification amendment the pending appilcation need not be carried open for an extended period of time.

80 9007050045 900622 .'

-PDR ADOCK 05000454 P PDC f fl _

'D . Thomas E. Murley - 2 - June 22, 1990 The reasons for withdrawing the Technical Specification Amendment request include:

1) The final changes made for LeSalle County Station are significant in number from the original request. Incorporating the e changes for the Byron and Braidwood Station requires a new on-site review at each station.

2) Regulatory Guide 1.9 is expected to be issued shortly. This document will give guidance in the area of diesel generatcr operation which wt11 be helpful in making improvements to the Technical Specifications of interest for the diesel generator.

Edison believes it is a prudent measure to defer additional action pending receipt of Regulatory Guide 1.9, so that the appropriate changes to the lechnical Specifications can be n:ade.

Edison will address the applicable portions of Regulatory Guide 1.9, as well as LaSalle County Station Amendments 72 and 56, upon receipt of the Regulatory Guide. Edison will make an appropriate Technical Specification Amendment request for the Byron and Braidwood Stations within 120 days of receipt of Regulatory Guide 1.9.

Edison is notifying the State of Illinois of this withdrawing of an application for amendment by transmitting a copy of this letter and its attachments to the designated State Official.

Copies of reference (a), (c) and (d) are enclosed. Please direct any questions you may have concerning this submittal to this office.

Very truly yours, IC7 S.C. Hunsader m

Nuclear Licensing Administrator

/scl:ID25 .

Enclosures:

Reference (a) July 20, 1987, S.C. Hunsader letter to T.E. Murley Reference (c) March 15, 1990, R. Pulsifer letter to T.J. Kovach ,

Reference (d) June 15, 1990, R.F. Dudley letter to T.J. Kovach cc: Resident Inspector-Byron Resident Inspector-Braidwood T. Boyce-NRR S. Sands-NRR H. Shafer-RIII M. Parker-IDNS

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Docket Nos. STN 50-456, STN 50-457 l 50-237, 50-249 !

50-254, 50-265 50-295, 50-304 l Mr. Thomas J. Kovach i Nuclear Licensing Manager ]

Conrnonwealth Edison Company-Suite 300 OPUS West 111 1400 OPUS Place i Downers Grove, Illinois 60515 .

Dear Mr. Kovach:

SUBJECT:

ADDITIONAL INFORMATION REQUIRED F01 COMMONWEAL.TH EDISON COMPANY )

(CECO) LICENSING REVIEWS In order to resolve a number of older licensing activities, the steff of PDIll-2 has reviewed our records to identify issues where CECO submittals '

are required or expected. A list of these issues sorted by plant is enclosed.

Please have your staff review this list. If discrepancies are noted, they should be communicated to the appropriate Project Manager, in order to resolve these issues in accordance with the existing NRC schedule, we request that these responses be provided no later than 45 days from receipt of this letter.

The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P. L.96-511.

I am available at (301) 492-1395 if you desire any additional discussion on this issue, t

, Sie:e ly, if .fikuw 1cc Richard F. Dudley, Acting Director Project Directorate 111-2 ;

Division of Reactor Projects - 111, IV, Y and Special Projects Office of Nuclear Reactor Regulation ,

Enclosure:

As stated cc w/ enclosure: '

See next page b1[Uh/ g '

ENCLOSURE BRAIDWOOD 1/2 TAC's 65950/65951 - Diesel Generator Loading Tech Spec Need additional information requested via telecon on 5/22/90. Response scheduled to be submitted by 6/30/90.

DRESDEN 2/3 TAC's 63970/63971 - Leak Before Break Concept for Acceptability of Masonry Walls Need additional information requested via NRC letter dated 7/20/89 and alluded to by CECO letters dated 9/26/89, 11/30/89, 3/5/90 and 5/1/90.

TAC's 53977/53978 - Salem ATWS Items 4.5.2 and 4.5.3 Reactor Trip System Functional Testing (MPA B-095)

Need additional information requested by Thierry Ross via telecon in spring 1989.

QUAD CITIES TAC's 55148/55149 - Combustible Gas Control (GL 84-09)

Additional information will be requested by NRC in several weeks.

ZION 1/2 TAC's 53648/53649 - Rescinding 1980 Order Application should be withdrawn.

TAC's 51367/51368 - Instrumentation w Follow the Course of an Accident (RG1.97)

Respond to SER with open items issued on 4-14-89.

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Mr. Thomes J. Kovach Byron /Braidwood Power Station Comonwealth Editon Cortpany t; nits 1 and 2 CC Mr. Gate Toth U. S. Nuclear Regulatory Comission Ptstinghouse Electric Corporation Byron / Resident Inspectors Office Ertrgy Systerns Cusiness Unit 4446 North German Church Road Post Office Box 355. Bay 236 West Byron, Illinois 61010 Pittslurgh, Pennsylvania 15230 Ms. Lorraine Creek Joseph Gallo, Esq. Rt. 1, Box 182 Hopkins and Sutter Manteno, Illinois 60950 ,

808 16th Street, N.W.

Suite 700 Mrs. Phillip B. Johnson Washington, D.C. 20006 1907 Stratford Lane Rockford, Illinois 61107 Regional Administrator y V. S. NRC, Region 111 Douglass Cassel, Esq.

799 Roosevelt Road, Bldg. f4 109 N. Derarborn Street Glen Ellyn, Illinois 60137 Suite 1300 Chicago, Illinois 60602 '

Ms. Bridget Little Rorem Appleseed Coordinator David C. Thomas, Esq.

117 florth Linden Street 77 S. Wacker Drive Essex, Illinois 60935 Chicago, Illinois 60601 Mr. Edward R. Crass Michael Miller, Esq.

Nuclear Safeguards and Licensing Sidley and Austin Division One first National Plaza l

Sargent & Lundy Engineers Chicago, Illinois 60690 1 55 East Monroe Street l Chicago, Illinois 60603 George L. Edgar l Newman & Holtzinger, P.C.

U. S. Nuclear Regulatory Comission 1615 L Street, N.nl.

Resident Inspectors Office Washington, D.C. 20036 RR#1, Box 79 1

Braceville, Illinois 60407 Comonwealth Edison Company l Byron Station Manager tir. Thomas W. Oriciger, Director 4450 North German Chur-h Road .;

1111nois Emergency Services Byron, Illinois 61010 anc Disaster Agency 110 East Adams Street Springfield, Illinois 62706 l

Illinois Department of l Nuclear Safety l Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704

Mr. Thon.as J. Kovach Dresden Nuclear Power Statica Commonwealth Edison Company Units 2 ar.d 3 CC*

Michael 1. Miller, Esq.

Sidley and Austin One First fiational Plaza Chicago, Illinois 60690 Mr. J. Eenigenburg Plant Superintendent Dresden fluclear Fower Station Rural Route #1 Morris, Illincis 60450 U. S. Nuclear Regulatory Cocuission -

Pesident inspectors Office Dresden Station Rural Route #1 Morris, Illinois 60450 Chairman Board of Supervisors of Grundy County Grundy County Courthouse Morris, Illinois 60450 Regional Administrator fluclear ReCulatory Conoiission, Region III 799 Roosevelt F,oad, Bldg. #4 Glen Ellyn, Illinois 60137 Illinois Department of Nuclear Safety Office of Nuclea.' Facility Srfety 1035 Outer Park U.!'c Springfield, Illinois 62704 Robert Heumann Office of Public Counsel '

State of Illinois Center 100 W. Randolph Suite 11-300 '

Chicago, Illinois 60601 l

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l-in Quad Cities Nuclear Pow Units 1 and 2 Mr. Thomas J. KovachCor.n.onwealth Edison Corpary CC' Mr. Stephen E. Shelton Vice ElectricPresidentIowa.1111ncis Company Gas and P. O. Box 4350 Davenport, Icwa .IIII 52808 Michael 1. Miller, Esq.

Sidley and Austin One Chicago, First Natict.61 Illinois 60690 Plaza i

Mr. Richard Dax tior, Station llanager Qued 22710 Cities 206th Avenue huclear North Power Sta Cordova, Illinois 61242 ission Resident Inspector U. S. Nuclear Regulatory Conn; 1 22712 206th Avenue North Cordova, Illinois 61242 ,

Chairman Rock Islard County Board of Supervisors Oldg.

1504 3rd Avenue j Rock Islano County Safety Officetock Island, Illinois 6

' Safety 1111nois Department of Nuclear Office of Nuclear Facility i 1035 Outer ParkionDriveSpringfield, III Illinois 62704 i sion Regional Administrator, Reg U. S. Nuclear R(tulatory Comm s 799 Roosevelt Road, Bldg. f 4 Glen Ellyn, Illinois 60137 Robert Neumannof Public Counsel Officeof State Illiaois Center 100 W. Randolph Suite 11-200 Chicago, Illinois 60601

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Mr. Thomas J. Kovach Zion Nuclear Power Station Connonwealth Edison company Units 1 and 2 cc: ,

Robert J. Voller., Esquire 109 tiorth Dearborn Street Chicago, Illinois 60602 Dr. Cecil Lue-Hing Director of Research and Development tietropolitan Sanitary District ;

of Greater Chicago ,

100 East Erie Street Chicago, Illinois 60611 Phillip Steptoe, Esq. ,

Sidley and Austin.

One First flational Plaza Chicago, Illinois 60603 i Mayor of Zion i Zion, Illinois 60099 ;

1111nois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 U.S. Nuclear Regulatory Commission Resident inspectors Office 105 Shiloh Blvd.

Zion, Illinois 60099 Regional Administrator, Region 111 U.S. Nuclear Regulatory Commission 799 Rcostvelt Road, Bldg. #4 Glen Ellyn Illinois 60137 Robert :Neumann Office of Public Counsel State of Illinois Center 100 W. Randolph Suite 11-300 Chicago, Illinois 60601

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am M,1H0 Docket Nos: 50-373 and 50-374 Mr. Thomas J. Kovach Nuclear Licensing Manager Comonwealth Edison Company-Suite 300 OPUS West 111 1400 OPUS place Downers Grove, Illinois 60515

Dear Mr. Kovach:

Subject:

Issuance of Amendment No. 72 to Facility Operating License No. NPF-11 and Amendment No 56 to Facility Operating License No. NPF LaSalle County ' station, Units 1 and 2 (TAC N0s. 72817, 72818,66011AND66012)

The U.S. Nuclear Regulatory Comission has issued the enclosed Amendment No. 72 to Facility Operating License No. NPF-11 and Amendment No. 56 to Facility Operating License No. NPF-18 for the LaSalle County Station, Units 1 and 2. These amendments are in response to your letter dated i July 28, 1987,s supplemented March 16 sand June 23, 1989) and further clarified July 3 and October 26, 1989 and February 26, 1990.

The amendments revise the LaSalle County Station, Units 1 and 2 Technical Specifications to clarify the requirements for the frequency of fast starting l and loading of the diesel generators from ambient conditions and to conform j with the diesel generator test schedule recommendations given in NRC Generic Letter 84-15. The Bases were also revised to reflect the changes to the Technical Specifications, i

A copy of the related Safety Evaluation supporting Amendment No. 72 to Facility Operating License No. NPF-11 and Amendment No. 56 to Facility Operating License No. NFF-16 is enclosed.

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4 Mr. Thomas J. Kovach 2 March 15, 1990 The Notice of issuance will be incluced in the Commission's next regular biweekly Federal Reaister notice. r Sincerely,

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Robert M. Pulsif er, Project Manager Project Directorate Ill-?

Division of Reactor Projects - 111, IV, Y and Special Projectt Office of Nuclear Reactor Regulation

Enclosures:

1. Antnerent No. 72 to FPF-11

2. Amendment No. 56 to NPF-18

3. Safety Evaluation ec w/ enclosure: ,

t see next peae t

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= I Mr. Thomas J. Kovach LaSalle County Nuclear Power Station Commonwealth Edison Company Units 1 & 2 i

cc:

Phillip P. Steptoe, Esquire Robert Cushing Sidley and Austin Chief, Public Utilities Division l One First National Plaza Illinois Attorney General's Office Chicago, Illinois 60603 100 West Randolph Street '

Chicago, Illinois 60601 Assistant Attorney General 100 West Randolph Street Suite 12 l Chicago, Illinois 60601 Resident inspector /LaSalle, NPS U.S. Nuclear Regulatory Commission Rural Route No. 1 P. O. Box 224 Marseilles, Illinois 61341 !

Chairman LaSalle County Board of Supervisors LaSalle County Courthouse

. Ottawa, Illinois 61350 Attorney General 500 South 2nd Street Springfield, Illinois 62701 Chairman Illinois Comerce Counission Leland Building 527 East Capitol Avenue-Springfield, Illinois 62706 ,

1111nois Department of Nuclear Safety Office of Nuclear Facility Safety '

1035 Outer Park Drive Springfield, Illinois 62704 l

Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road, Bldg. f4 Glen Ellyn, Illinois 60137 l

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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION l SUPPORTING AliENDMENT NO. 72 TO FACILITY OPERATING LICENSE NO. NPF-11 AND AMENDMENT 110. 56 TO FACILITY OPERATING LICENSE NO. NPF-18 COMMONWEALTH EDIS0N COMPANY LASALLE COUNTY STATION, UNITS 1 AND 2 DOCKET NOS. 50-373 AND 50-374 l 1.0 Introduction By letter dated July 28,1987, supplemented March 16 and June 23, 1989, and further clarified July 3 and October 26, 1989 and February 26, 1990, Commonwealth Edison Company (the licensee) requested changes to the Technical Specifications (TS) covering emergency Diesel Generator (EDG) surveillance testing at LaSalle County Station, Units 1 and 2. The requested changes include 1) clarification of TS footnotes which describe acceptable methodology for EDG testing, and 2) a reduction in the frequency of EDG testing required by '

TS ACiiONS. These changes were requested so LaSalle Units 1 and 2 TS would reflect current staff positions with respect to EDG testing as reflected in Generic Letter GL 84-15, " Proposed Staff Actions to Improve and Maintain Diesel Generator Reliability."

2.0 Evaluation GL 84-15 describes methods for EDG testing which, if implemented, would .

minimize the impact of testing on EDG reliability. These methods include engine prelube, modified or slow starts as applicable, and loading in accordance with vendor recommendations. Prior to licensing, a footnote was added to Section 4.8.1.1.P. of the LaSalle TS for the specific purpose of allowing this methodology to be applied to EDG surveillance testing.

Subsequently, it was determined that the wording of the footnote was ambiguous, and that clarification was required. The licensee was requested to propose a change to the TS wherein the footnote would be changed to clarify its intent and applicability. In addition, it was suggested that the licensee consider ,

deleting the TS requirement to test EDGs at a load " equal to or greater than 2600KW" and substitute a load range.

The licensee responded to the staff's request and suggestion in their July 3, 1989 letter. Attachment B to the licensee's letter is a copy of the applicable portions of the LaSalle TS which has been annotated to indicate where modified testing is applicable, and where a load range of 2400-2600KW has been substituted for " equal to or greater than 2600KW." In addition to the annotated TS, the licensee provides three, new, explanatory footnotes. These footnotes cover 1) when engine prelube prior to testing is acceptable, 2) when r ?CO N IN g

2 fast starts and loading are and are not required, and 3) a statement that transients outside the above EDG load range during testina does not invalidate the test. The staff has reviewed the licensee's submittal and has concluded that the proposed TS changes, with new footnotes, accurately reflect the current staff's position regarding EDG testing methodology as documented in Gl. 84-15.

The proposed TS changes relative to these footnotes es shown in Attachment B to the licensee's July 3, 1989 letter are, therefore, acceptable.

It should be noted that for purposes of this review, the staff interprets "prelube" to mean the deliberate act of pressurizing the entire diesel engine lubricating system for a specified period of time to ensure adequate lubrication to all moving parts prior to activating any engine starting mechanism. This is normally accomplished using a separate, motor driven pump.

In addition to the above footnotes, the licensee has proposed a range of 2400-2600KW for EDG surveillance testing. The staff has noted that current Standard Technical Specifications (STS) recuire EDGs to be loaded during test to " equal to or greater than (continuous duty rating)." In order to comply with TS requirements, the staff noted that operators routinely operated EDGs under surveillance test at " greater than (continuous duty rating)." This resulted in routine and continuous overloading of EDGs, a practice that is also detrimntal to EDG reliability. The current staff position with respect to loading is that by utilizing a load range, o)erators will be able to meet TS requirements without routinely overloading t1e EDGs. A range of 200rW for an EDG rated at 2600KW is considered by the staff to be adequate in terms of der,onstrating full load capability. The staff concludes that the licensee's proposed 2400-2600KW range for EDG testing at LaSalle is consistent with current staff position regarding increasing EDG reliability through changes in EDG testing methodology as reflected in GL 84-15 and is, therefore, acceptable.

By letter dated June 23, 1989, the licensee requested changes to the Action Statements in TS Section 3.8.1.1 to reduce the number of EDG tests required when the plant ac power systems (offsite, onsite, or combination) are degraded. Under current TS, the licensee is required to test all operable EDGs under any condition of inoperable offsite power, onsite power, or combination of both. Frequency of required testing varies from within I hour to within 8 l

hours for the initial test, and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereaf ter until all ac power systems are restored to operable status. Under current TS, each EDG could be subjected to as many as 10 starts in a typical ACTION with a 72 hour8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months tine limit. .

The licensee's proposal, as detailed in Attachment B to the October 26, 1989 letter, would delete ACTIONS a-f in the existing TS, and substitute new ACTIONS a-1. The major differences between existing and proposed TS are the elimination of EDG testing once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months in favor of one test for each operable EDG during iny ACTION, and a change in the time to complete the first test from a minimum of 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and a maximum of 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months to a minimum of 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months and a maximum of 24 liours. In addition, the proposed TS add clarifications that eliminate the rtquirement for EDG testing if 1) the remaining operable l

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EDG(s)havebeensuccessfullytestedwithinthepast24 hours,or2)the inoperable EDG became inoperable due to preplanned preventive maintenance.

Finally, the proposed TS include additionel ACTION g-1.

The staff has determined that EDG operab.iity under conditions involving degraded ac power systems can be adequately demonstrated by a single test of each operable EDG under any ACTION or up to 7? hours. Excessive EDG testing with its potontial for EDG degradation as reflected in the current LaSalle TS can be eliminated. Therefore, the licensees's proposal to reduce EDG testing under dearaded ac conditions to one per operable EDG under any ACTION is acceptable. (All LaSalle TS ACTIONS in Section 3.8.1.1 are 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or less.)

The staff has also determined that the time for completing EDG testing will vary with the severity of the ACTION, but in no case should the time constraints impede licensee actions to isolate and commence correction of the degraded ac power condition. Consequently, the licensee's proposal to set this time for EDG testing completion at 8 bours for the more sericus ACTIONS and 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for the less serious ACTIONS is acceptable, in the staff's view, a successful test of an EDG within the past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months satisfies the requirenant to demonstrate operability under any ACTIGH, and the test need not be repeated. It is also the staff's view that inoperability of an EDG due to preplanned preventive maintenance has no potential for common mode failure, and testing of the remaining EDGs undeFthese conditions is not required. Therefore, the staff finds the licensee's proposed clarifications regarding elimination of EDG testing as described above to be acceptable, in the prerMed TS, there are more ACTIONS than in the existing TS. This is due to tt inner in which the ACTIONS are presented; i.e., some are combined in the exuing TS, but are covered independently in the proposed TS. The number of variations of inoperable ac sources, however, is the same. Also, the requirements of the ACTION covering these variations is the same. The proposed TS format is easier to read, but does not add or delete any ACTIONS or alter any completion tines, except as discussed above. The proposed TS format with edditional ACTIONS is, therefore, acceptable. This new format necessiteted editorial corrections to the footnote for limiting Conditions for Op"eration(LCO)3.8.1.1.b. The staff has reviewed these corrections and finds t m acceptable.

Based on its review, the staff has concluded that the licensee's proposed changes to TS Section 3.8.1.1, are consistent with the objectives of GL 84-15 in terms of r. educing EDG testing and are, therefore, acceptable.

The Bases of the affected specification sections have been modified by the licensee to include the appropriate diesel generator changes. Based on our review, we conclude that the changes to these bases are acceptable, it should be noted that for purposes of this review maintenanceisconsideredbythestafftoconsistoYpreplannedpreventive activities that are conducted on a repetitive basis at scheduled intervals, the purpose of which is to enhance EDG reliebility/ availability. It includes such things as 1

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I 4 I lubrication, fluid replacement, minor adjustments, monitoring activities, ;

etc. Such items as major component replacement er periodic engine inspection / teardown are not considered to be preplanned preventive maintenance.

3.0 Environmental Consideration These amendments involve changes to the use of the facility components located within the restricted area as defined in 10 CFR Part 20. The staff has determined that the amendments involve no significant increase in the amounts and no significant changes in the types of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational exposure. The staff has previously determined that the amendments involve no significant hazards consideration, and there has been no public comment on such finding.

Accordingly, the amendments meet the eligibility criteria for categorical exclusionsetforthin10CFR51.22(c)(9). Pursuant to 10 CFR 51.22(b),

no environmental impact statement or environmental assessment need be prepared in connection with the issuance of these amendments.

4.0 Conclusion The staff has concluded, based on the considerations discussed above, that:

(1) there is reasonable assurance that the health and safety of the will not be endangered by operation in the proposed manner, and such(2) public activities will be conducted in compliance with the Commission's regulations and the issuance of these amenuments will not be inimical to the common defense and security or to the health and safety of the public.

Principal Contributar: Edward Tomlinson, NRR/OSTB Jefferey Harold, NRR/PD32 Paul Shemanski, NRRi N 12 Robert Pulsifer, NRR/PD32 Dated: March 15, 1990

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I k.....,/ t COMMONWEALTH EDISON COMPANY 1 DOCKET NO. 50-373 r LASALLE COUNTY STATION, UNIT 1 AMENDMENT TO FACILITY OPEP.ATING LICENSE Amendment No. 72 License No. NPF-11

1. The Nuclear Regulatory Comission (the Comission or the NRC) has found that:

A. The application for amendment filed by the Comonwealth Edison Company (the licensee), dated July 28, 1987, supplemented March 16 -

and June 23, 1989, and, further clarified July 3 and October 26, 19E9 and February 26, 1990, comply with the standards and recuirements of the Atomic Energy Act of 1954, as ainended (the Act), and the ;

Comission's regulations set forth in 10 CFR Chapter 1; ;

B. The facility will operate in conformity with the application, the !

provisions of the Act, and the regulations of the Comission; ,

C. There is reasonable assurance: (i) that the activities authorized by this amendment can be conducted without endangering the health and ,

safety of the public, and (ii) that such activities will be conducted in compliance with the Comission's regulations set forth in 10 CFR Chapter I; D. The issuance of this amendment will not be inimical to the comon defense and security or to the health and safety of the public; and E. The issuance of this amendment is in accoriance with 10 CFR Part 51 of the Comission's renlations and all appli:able requirements have been satisfied. 1

2. Accordingly, the license is amended by changes to the Technical Specifica- l tions as indicated in the enclosure to this license amendment and paragraph 2.C.(2) of the Facility Operating License No. NPF-11 is hereby amended to [

read as follows:

(2) Technical Specifications and Environmental Protection Plan l The Technical Specifications contained in Apperdix A, as revised through Amendment No. 72, and the Environmental Protection Plan contained in !

l Appendix B, are hereby incorporated in the license. The licensee shall l operate the facility in accordance with the Technical Specifications and i the Environmental Protection Plan.

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3. This amerdment is effective upon date of issuance.

F0 THE tlVCLEAR REGULATORY COMMIS$10N

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>b ohn W. Craig, Director Project Directorate 111-2 Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

Changes to the Technical Specifications Date of Issuance: March 15, 1990 1

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%..~...f COMMONWEALTH EDISON COMPANY 00CrET NO. 50-374 LASALLE COUNTY STATION, UNIT 2 AMENDMENT TO FACILITY OPERATING LICENSE Amendrnent No. 56 -

License No. NPF-18

1. The Nuclear Regulatory Comission (the Comission or the NRC) has found ,

tht.t:

A. The application for amendment filed by the Comonwealth Edison '.

Company (the licensee), dated July 28, 1987, suppleriented March 16 and June 23, 1989, and, further clarified July 3 and October 26, 1989 and February 26, 1990, comply with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and the Comission's regulations set forth in 10 CFR Chapter I; B. The facility will operate in conformity with the application, the provisions of the Act, and the regulations of the Comission; ,

C. There is reasonable assurance: (i) that the activities authorized by this amendment can be conducted without endangering the health and safety of the public, and (ii) that such activities will be conducted in compliance with the Comission's regulations set forth in 10 CFR Chapter I; D. The issuance of this amendment will not be inimical to the comon defense and security or to the health and safety of the public; and E. The issuance of this amendment is in at.ccrdance with 10 CFR Part 51 of the Comission's regulations and all applicabb requirements have been satisfied.

2. Accordingly, the license is amended by changes to the Tecti.'ical Specifica-tions as indicated in the enclosure to this license amendment and paragraph 2.C.(2) of the Facility Operating License No. NPF-18 is hereb) amended to read as follows:

(2) Technical Specifications and Environmental Protection P g The Technical Specifications contained in Appendix A, as revised through Amendment No. 56, and the Environmental Protection Plan contained in Appendix B, are hereby incorporated in the license. The licensee shall operate the facility in accordance with the Technical Specifications and the Environmental Protection Plan.

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3. This amendment is effective upon date of issuance.

FOR THE NtJCLEAR REGULATORY COMMISSION 1

t' John W. Craig, Director Project Directorate 111 2 Division of Reactor Projects - 111, IV, V and Special Projects Office of Nuclear Reactor Regulation

Enclosure:

Changes to the Technical Specifications Date of Issuance: 51 arch 15, 1990 1

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ENCLOSURE TO LICENSE AMENDMENT NO. 56 >

FAtiLITY OPEPATING LICENSE NO. NPF 18 i

DOCKET NO. 50 374 Replace the following sages of the Appendix "A" Technical Specifications with the enclosed pages. T1e revised pages are identified by amendment number and contain 6 vertical line indicating the area of change. >

R,EMOVE INSERT 3/4 8-1 3/4 8-1 3/4 8-la 3/4 8-la 3/4 8-2 3/4 8-2

...... 3/4 8-2a*

3/4 8-2b*

3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 B-5 3/4 8-5 3/4 8 6 3/4 8-6 3/4 8-7 3/4 8-7

...-.. 3/4 8 7a*

....-- 3/4 8-7b*

B 3/4 8-1 B 3/4 8-1 B 3/4 8-? B 3/4 8-2

...... B 3/4 8-3*

New Page

, t ENCLOSukt TO LICENSE AMENDMtNI NO. 72 FACILITY OPERATING LICENSE NO. NPF-11 DOCKET NO. 50-373 Replace the followino pages of the Appendix "A" Technical Specifications with ,

the enclosed pages. The revised pages are identified by amendment number and t contain a vertical line indicating the area of change.

REMOVE INSERT 3/4 8-1 3/4 8-1 gh 3/4 8-la 3/4 8-le 3/4 8-2 3/4 8 2 3/4 8-2a*

3/4 8-2b*

3/4 8-3 3/4 8-3 3/4 8-4 3/4 8-4 3/4 8-5 3/4 8-5 3/4 8-6 3/4 8-6 -

3/4 8-7 3/4 8-7 3/4 8-7a*

~

3/4 8 7b*

B 3/4 8-1 B 3/4 8-1 B 3/4 8-2 B 3/4 8-2 B 3/4 8-3*

New Page

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/ h **%q'o, UNITED sT ATES L' 0 '

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3 .,. o 'jt NUCLEAR REGULATORY COMMISSION WASHINGTON, D, C. 20$$5 l

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/ April 26, 1990 i

Docket Hos. 50-373 50-374 1

)

Mr. Thomas J. Kovach j Nuclear Licensing Manager ;

Commonwealth Edison Company-Suite 300 OPUS West 111 1400 OPUS Place Downers Grove, IL 60515

Dear Mr. Kovach:

SUBJECT:

CORRECTION TO AMENDMENT NO. 72 TO FACILITY OPERATING LICENSE N0.

NPF-11 AND AtiENDMENT NO. 56 TO FACILITY OPERATING LICEllSE NO. NPF-18 Amendment No. 56 to Facility Operating License No. NPF-18 and amendment No. 72 to Facility Operating License No. NPF-11 were issued March 15, 1990. Several .

pages from these amendments had typographical and/or editorial differences between Unit 1 and Unit ? as a result of these amenoments, previous amendments t and the original Technical Specifications. Enclosed are corrected copies of these pages to be incorporated into the LaSalle Units 1 and 2 Technical Specifications.

The SER, provided with these amendments, stated that periodic engine inspection /

teardown is not considered to be preplanned preventive maintenance. As stated earlier in the SER, preplanned preventive maintenance fs considered to consist of activities that are conducted on a repetitive basis at scheduled intervals.

An engine inspection / teardown can be a preplanned preventive maintenance item if it is a repetitive exercise established, for example, through a manufac-turer's recommendation nr utility experience. These are scheduled to enhance reliability and availeb ' '" of the diesel generator by maintaining the equipment to prevent preca.ure failure.

The last paragraph under Section 2.0, Evaluation, in the SER was rewritten to help eliminate ambiguities dealing with inspection / teardown or what constitutes a major component. Copies of the revised SER pages are enclosed.

Sincerel , .

y+ ,cw Robert M. Pulsifer, Project Manager project Directorate 111 - 2 Division of Reactor Projects - III IV, V and Special Projects Office of Nuclear Reactor Regulation i

Enclosures:

As stated cc: See next page M (j u S O 80 <-n c-.; ~ &

l Mr. Thomas J. Kovach LPSalle County Nuclear Power Station Comorwealth Edison Company Units 1 & 2 l

l- cc:

Phillip P. Steptoe, Esquire Robert Cushing i Sidley and Austin Chief, Public Utilities Division One First National Plaza 1111nois Attorney General's Office 1 Chicago, Illinois 60603 100 West Randolph Street Chicago, 1.111nois 60601 Assistant Attorney General t 100 West Randolph Street Suite 12 '

Chicago, Illinois 60601 '

Resident inspe: tor /LaSalle, NPS .

U.S. Nuclear Regulatory Comission Rural Route No. 1

P. O. Box 224 i Marseilles, Illinois 61341 Chairman tasalle County Board of Supervisors ,

LaSalle County Courthouse Ottawa, Illinois 61350 Attorney General 500 South 2nd Street Springfield, Illinois 62701 l

l Chairman Illinois Comerce Comission Leland Building '

527 East Capitol Avenue 1 Springfield, Illinois 62706 Illinois Department of Nuclear Safety Office of Nuclear Facility Safety 1035 Outer Park Drive Springfield, Illinois 62704 Regional Administrator, Region 111 U. S. Nuclear Regulatory Comission '

799 Roosevelt Road, Bldg. f4 Glen Ellyn, Illinois 60137 l

l

. _ . _ _ _ . _ - _ . .-. -/

hl* * * %q'o UNITED STATES

'g

[ , , , g NUCLEAR REGULATORY COMMISSION W ASHINGT ON, D. C. 20555

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\./ .e SAFETY EVALVATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 7? TO FACILITY OPEPATING LICENSE NO. NPF-11 AND AMENDMENT NO. 56 TO FACILITY OPERATING LICENSE NO. NPF-18 COMMONWEALTH EDISON COMPANY QSALLECOUNTYSTATION. UNITS 1AND2 DOCKET NOS. 50-373 AND 50-374 e

{

l 1.0 Introduction By letter dated July 28, 1987, supplemented March 16 and June 23, 1989, and further clarified July 3 and October 26, 1989 and February 26, 1990, Commonwealth Edison Company (the licensee) requested changes to the Technical Specifications (TS) covering emergency Diesel Generator (EDG) surveillance testing at LaSalle County Station, Units 1 and 2. The requested changes include: (1) clarification of TS footnotes which describe acceptable methodology for EDG testing, and (2) a reduction in the frequency of EDG testing required by TS ACTIONS. These changes were requested so LaSalle Units 1 and 2 TS would reflect current staff positions with respect to EDG testing as reflected in Generic Letter (GL) 84-15. " Proposed Staff Actions to Improve and Maintain Diesel Generator Reliability."

2.0 Evaluation GL 84-15 describes methods for EDG testing which, if implemented, would minimize the impact of testing on EDG reliability. These methods include engine prelube, modified or slow starts as applicable, and loading in accordance with vendor recommendations. Prior to licensing, a footnote was

added to Section 4.8.1.1.2 of the LaSalle TS for the specific purpose of l

allowing this methodology to be applied to EDG surveillance testing.

Subsequently, it was determined that the wording of the footnote was ambiguous, and that clarification was required. The licensee was requested to propose ~a change to the TS wherein the footnote would be changed to clarify its intent and applicability. In addition, it was suggested that the licensee consider deleting the TS requirement to test EDGs at a load " equal to or greater than 2600KW" and substitute a load range.

The licensee responded to the staff's request and suggestion in their July 3, 1989 letter. Attachment B to the 'icensee't letter is a copy of the applicable portions of the LaSalle TS which has been annotated to indicate where modified testing is applicable, and where a load range of 2400-2600KW has been substituted for " equal to or greater than 2600KW." In addition to the annotated TS, the licensee provides three, new, explanatory footnotes. These footnotes cover: (1) when engine prelube prior to testing is acceptable, 2) when

/

dw MD2* Hg

2 fast starts and loading are and are not required, and 3) a statement that transients outside the above EDG load rarge during testing does not invalidate the test. The staff has reviewed the licensee's submittal and has concluded that the proposed TS changes, with new footnotes, accurately reflect the current staff's position regarding EDG testing nethodology as documented in GL 84-15.

The proposed TS changes relative to these footnotes as shown in Attachment B to the licensee's July 3, 1989 letter are, therefore, acceptable, it should be noted that for purposes of this review, the staff interprets "prelube" to mean the deliberate act of pressurizing the entire diesel engine lubricating system for a specified period of time to ensure adequate lubrication to all moving parts prior to activating any engine starting mechanism. This is normally accomplished using a separate, motor driven pump, in addition to the above footnotes, the licensee has proposed a range of 2400-2600KH for EDG surveillance testino. The staff has noted that current Standard Technical Specifications (STS)' require EDGs to be loaded during test to " equal to or greater than (continuous duty rating)." In order to comply with TS requirements, the steff noted that operators routinely operated EDGs under surveillance test at " greater than (continuous duty rating)." This resulted in routine and continuous overloading of EDGs, a practice that is also detrimental to EDG reliability. The current staff position with respect to loading is that by utilizing a load range, operators will be able to meet TS reauirements without routinely overloading the EDGs. A range of 200KW for an EDG rated at 2600KW is considered by the staff to be adequate in terms of demonstrating full load capability. The staff concludes that the licensee's proposed 2400-2600KW range for EDG testing at LaSalle is consistent with current staff position regarding increasing EDG reliability through changes-in EDG testing methodology as reflected in GL 84-15 and is, therefore, acccptable.

By letter dated June 23, 1989, the licensee requested changes to the Action Statements in TS Section 3.8.1.1 to reduce the number of EDG tests required when the plant ac power systems (offsite, onsite, or combination) are degraded. Under current TS, the licensee is required to test all operable EDGs under any condition of inoperable offsite power, onsite power, or combination

of both. Frequency of required testing varies from within I hour to within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months for the initial test, and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereaf ter until all ac power systems'are restoied to operable status. Under current TS, each EDG could be subjected to as many as 10 starts in a typical ACTION with a 72-hour time limit.

The licensee's proposal, as detailed in Attachment B to the October 26, 1989 letter, would delete ACTIONS a-f in the existing TS, and substitute new ACTIONS a-1. The major differences between existing and proposed TS are the elimination of EDG testing once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months in favor of one test for each operable EDG during any ACTION, and a change in the time to complete the first test from a minimum of I hour and a maximum of 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months to a minimum of 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months and a maximum of 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . in addition, the proposed TS add clarifications that eliminate the requirement for EDG testing if: (1) the remaining operable l

m .

1 l

I EDG(s) have been successfully tested within the past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , or 2) the inoperable EDG became inoperable due to preplanned preventive maintenance. .

Finally, the proposed TS include additional ACTION g-1. l The staff has cetermined that EDG operability under conditions involving degraded ac power systems can be adequately demonstrated by a single test of I each operable EDG under any ACTION of up to 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months . Excessive EDG testing !

with its potential for EDG degradation as reflected in the current LaSalle TS can be eliminated. Therefore, the licensees's proposal to reduce EDG testing i under degraded ac conditions to one per operable EDG under any ACTION is (

acceptable. (All Lt.Salle TS ACTIONS in Section 3.8.1.1 are 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or less.)

The staff has also determined that the time for completing EDG testing will i vary with the severity of the ACTION, but in no case should the time constraints I impede licensee actions to isolate and commence correction of the degraded ac power condition. Consequently, the licensee's proposal to set this time for EDG testing completion at 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months for the more serious ACTIONS and 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ,

for the less sarious ACTIONS is acceptable. l In the staff's view, a successful test of an EDG wit 3in the past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months l satisfies the requirement to demonstrate operability 1nder any ACTION, and the test need not be repeated. it is also the staff's view that inoperability of an EDG due to preplanned preventive maintenance has ac potential for common mode failure, and testing of the remaining EDGs undeFthese conditions is not required. Therefore, the staff finds the licensee's proposed clarifications I regarding elimination of EDG testing as described above to be acceptable, in the proposed TS, there are more ACTIONS thra 'n the existing TS. This is due to the manner in which the ACTIONS are prs anted; i.e., some are combined in the existing TS, but are covered independently in the proposed TS. The number of variations of inoperable ac sources, however, is the same. Also, the requirements of the ACTION covering these variations is the same. The proposed TS format is easier to read, but does not add or delete any ACTIONS or alter any completion times, except as discussed above. The proposed TS format with additional ACTIONS is, therefore, acceptable. This new format necessitated editorial corrections to the footnote for Limiting Conditions for Operation (LCO)3.8.1.1.b. The staff has reviewed these corrections and finds them acceptable.

Based on its review, the staff has concluded that the licensee's proposed changes to TS Section 3.8.1.1, are consistent with the objectives of GL 84-15 in terms of reducing EDG testing and are, therefore, acceptable.

The Bases of the affected specification sections have been modified by the licensee to include the appropriate diesel generator changes. Based on our '

review, we conclude that the changes to these Bases are' acceptable.

It should be nott:d that for purposes of this review, preplanned preventive maintenance is considered by the staff to consist of activities which are intended to enhance EDG reliability / availability, and are conducted on a repetitive basis, or are scheduled in advance.

8 O

4 3.0 Environmental Consideration These amendoients involve changes to the use of the facility components located within the restricted area as defined in 10 CFR Part 20. The staff has deterrined that the amendments involve no significant increase in the amounts and no significant changes in the types of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational exposure. The staff has previously determined that the amendments involve no significant hazards ;

consideration, and there has been no public comment on such finding.

Accordingly,theamendmentsmeettheelig)ibilitycriteriaforcateaorical exclusion set forth in 10 CFR 51.22(c)(9 . Pursuant to 10 CFR 51.22(b),

no environmental impact statement or environmental assessment need be prepared in connection with the issuance of these amendments.

4.0 Conclusion The staff has concluded, based on the considerations discussed above, that:

(1) there is reasonable assurance that the health and safety of the will not be endangered by operation in the proposed manner, and such (2) public activities will be conducted in compliance with the Commission's regulations and the issuance of these amendments will not be inimical to the common defense and security or to the heal +h and safety of the public.

Principal Contributor: Edward Tomlinson, NRR/OSTB Jefferey Harold, NRR/PD32 Paul Shemanski, NRR/PD32 Robert Pulsifer, NRR/PD32 Dated: April 26,1990 I

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3/4.8 ' ELECTRICAL POWER SYSTEMS

-3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING LIMITING CONDITION FOR OPERATION

3. 8.1.1 As a minimum, the followireg A.C. electrical power sources shall be OPERABLE:

a. Two physically independent circuits between the offsite transmission network and the onsite Class 1E distribution system, and

b. Separate and independent diesel generators

0, 1A, 2A and IB with:

1. For diesel generator 0, lA and 2A:

a) A separate day fuel tank containing a minimum of 250 gallons of fuel.

b) A separate fuel storage system containing a minimum of 31,000 gallons of fuel.

2. Fcr diesel generator 1B, a separate fuel storage tank and a day tank containing a combined minimum of 29,750 gallons of fuel. ]

3. A separate fuel transfer pump.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION:

a. With one offsite e,ircuit of the above required A.C. electrical power-sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If any of the diesel generators have not been successfully tested within the

_past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , demonstrate their OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.4 for each such diesel generator, separately, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . . Restore the offsite circuit-to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in CCLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

b. With either the 0 or-1A diesel generator inoperable, demonstrate the OPERABILITY of the above required A.C. offsite sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the diesel generator became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE

See page 3/4 8-1(a).

LASALLE-UNIT 1 3/4 8-1 Amendment No. 72 Uf

a ,.s. .. .

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_ ELECTRICAL POWER SYSTEMS.

i i

, LIMITING CONDITION FOR OPERATION (Continued) c: -

e f

i h *For the purposes of completing' technical specification surveillance 4 requirements 4.8.1.1.2.d.1 and 4.8.1.1.2.f.1, as part of a pre planned d preventat Ne maintenance program, on the 0 diesel generator the requirements '

of action itatements b are modified to:

L 1. Eiir.inate the requirement for performing technical specification ..

t surveillance requirements.4.8.1,1.1.a on each operable A.C. source, i

-immediately and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter, when the 0 diesel p generator is declared inoperable. ,.

2. Allow an additional 96 hours0.00111 days 0.0267 hours 1.587302e-4 weeks 3.6528e-5 months in excess of the 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed in j action statement b for the O diesel generator to be inoperable.

Provided that the following conditions are met:

A. Unit 2 is in operational condition 4 or 5 or defueled prior to 3

[ taking the 0 diesel generator cat of service. !

B. . Surveillance requirements 4.8.1.1.1.a and 4.8.1.1.2.a.4 are i successfully completed, for'the offsite power sources and the 1A and -

2A diesel generators, within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to removal of the 0 diesel generator from service. ;

L C, No maintenance is performed on the offsite circuits or the 1A or 2A diesel generators, while the 0 diesel generator is inoperable. ;

L D. Technical specification requirement 4.8.1.1.1.a is performed daily, !

' while the 0 diesel generator is inoperable.

1 j

t. The control circuit for the unit cross-tie circuit breakers between buses 142Y and 242Y are temporarily modified to allow the breakers l

to be' closed with a diesel generator feeding the bus, while the 0 diesel generator is inoperable.

l The provisions of technical specification 3.0.4 are not applicable.

l l LASALLE-UNIT 1 3/4 8-la Amendment No. 72 lt

I ELECTRICAL POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION: (Continued) diesel generators, separately, by performing Surveillance .

Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ". Restore the diesel '

, generator to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in et least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

.+

c. With one offsite circuit of the above required A.C. sources and diesel generator 0 or 1A of the above required A,C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the diesel generator became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining 0PERABLE diesel generators, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months *, Restore at least one of the inoperable A.C. sources to OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following

e. 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore at least two offsite circuits and diesel generators 0 and 1A to OPERBLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 ,

hours and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

d. With diesel generator'1B of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the offsite A.C. '

sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 -

hour and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the diesel i generator became inoperable due to any cause other than preplanned J preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generators,. separately, by performing .

Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *. Restore diesel generator 18 to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare the HPCS system inoperable and take the ACTION required by specification 3.5.1.

e. With both of the above required offsite circuits inoperab'le, demonstrate the OPERABILITY of the remaining A.C. sources, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 ;

within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months unless the diesel generators are already operating.

Restore at least one of fsite circuit to OPERABLE status within 24

.. hours, or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

With only one offsite circuit restored to OPERABLE status, restore

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY, The provisions of Specification 3.0.2 are not applicable.

! LASALLE-UNIT 1 3/4 8-2 Amendment No. 72

4 .0 i

ELECTRICAL POWER SYSTEMS LIMITING CONDITIONS FOR OPERATION (Continued) ,

ACTION (Continued) at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months !

from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the ,

following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . A successful test (s) of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4, performed under this ACTION statement for the OPERABLE diesel -

generators, satisfies the diesel generator test' requirements of ACTION statement a, e f. With diesel generators 0 and 1A of the above required A.C. -

electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereaf ter, and Surveillance Requirement 4.8.1.1.2.a.4 for the IB and 2A diesel generators, separately, within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *. Restore at least one of the inoperable diesel generators 0 or 1A to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore both diesel generators 0 and 1A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , from the-time of initial loss, or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

g. With diesel generator 2A of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C.

sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the 2A diesel generator became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the 1A diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.4, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *. Restore the inoperable diesel generator 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare standby gas treatment system subsystem B, Unit 2 drywell and suppression chamber hydrogen recombiner system,. and control room and auxiliary electric equipment room emergency filtration system train B inoperable, and take the ACTION required by specifications 3.6.5.3, 3.6.6.1, and 3.7.2. Continued per formance of. Surveillance Requirement 4.8.1.1.1.a is not required provided the above systems are declared inoperable and the action of their respective specifications is taken.

This test is required to be completed regardless of when the inoperable diesel generator is restored to O'PERABILITY. The provisions of Specification 3.0.2 are not applicable.

LASALLE-UNIT 1 3/4 8-2a Amendmer+. No. 72

ELECTRICAL POWER SYSTEMS LIMITING CONDITIONS FOR OPERATION (Continued) L

' ACTION (Continued)

h. With one offsite circuit of the above required A.C. electrical power sources and diesel generator 1B inoperable, apply the requirements ,

of ACTION a and d specified above.

i. With either diesel generators 0 or 1A inoperable and diesel generator 18 inoperable, apply the requirements of ACTION b and d-specified above.

J. With one offsite circuit of the above required A.C. electrical power sources and diesel generator 2A inoperable, apply the requirements of ACTION a and g specified above.

k.7 With diesel generator 1B and diesel generator 2A inoperable, apply :

the requirements of ACTION d and g specified above.

1. With diesel generator 0 and diesel generator 2A inoperable, apply the requirements of ACTION b and g specified above.

L i

LASALLE-UNIT 1 3/4 8-2b Amendment No. 72

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required independent circuits between the offsite I transmission network and the onsite Class 1E distribution system shall be:

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments and indicated power availability, and

b. Demonstrated OPERABLE at least once per 18 months during shutdown by manually transferring unit power supply from the normal circuit to- !

the alternate circuit, i

4.8.1.1.2 Each of the above required diesel generators shall be demonstrated OPERABLE:*

a. 'In accordance with the frequency specified in Table 4.8.1.1.2-1 on a ,

STAGGERED TEST BASIS by:

1. Verifying the fuel level in the day fuel tank.

2. Verifying the fuel level in the fuel storage tank.

3. Verifying the fuel transfer pump starts and transfers fuel from the storage system to the day fuel tank.

4. Verifying the diesel starts from ambient condition and accelerates to 900 rpm +5%, -2% in less than or equal to 13 seconds **, The generator voltage and frequency shall be 4160 1150 volts and 60 +3.0, -1.2 Hz within 13 seconds ** after the start signal,

5. . Verifying the diesel generator is synchronized, and then loaded to 2400 kW to 2600 kW*** within 60 seconds **, and operates with this load for at least 60 minutes.

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

- Surveillance testing to verify the diesel generator start (13 second) and load (60 second) times from ambient conditions shall be performed at least once per 184 days. All other engine starts performed for the purpose of meeting these surveillance requirements may be conducted in accordance with warmup and loading procedures, as recommended by the manufacturer, in order to minimize mechanical stress and wear on the diesel generator caused by fast starting and loading of the diesel generator.

- - Transients, outside of this load band, do not invalidate the surveillance tests.

LASALLE-UNIT 1 3/4 8-3 Amendment No. 72

a ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS

6. Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.

7. Verifying the pressure in all diesel generator air start receivers !

to be greater than or equal to 200 psig, b.- At least once per 31 days and after each opert tM diesel where the period of operation was greater the to 1 %ur by -

checking for and removing accumulated water ; f fuel tanks.

c. At least once per 92 days and from new fuel - co addition to the storage tanks by verifying that a sample , cah ,J in-accordance with ASTM-0270-1975 has a water and sediment content of less than or equal to 0.05 volume percent and a kinematic viscosity @ 40'C of -

greater than or equal to 1.9 but less than or equal to 4.1 when tested in accordance with ASTM-D975-77, and an impurity level of less than 2 mg of insolubles per 100 ml when tested in accordance with ASTM-02274-70.

d. At least once per 18 months during shutdown by:

1. Subjecting the diesel to an inspection in accordance with <

procedures prepared in conjunction with its manufacturer's recommendations for this class of standby st.tv;ce.

2. Verifying the diesel generator capability

to reject a load of greater than or equal to 1190 kW for diesel generator 0, greater than or equal to 638 kW for diesel generators 1A and 2A, and greater than or equal to 2381 kW for diesel generator 1B while maintaining engine speed less than or equal to 75% of the difference between nominal speed and the overspeed trip setpoint or 15% above nominal', whichever is less.

3. Verifying the diesel generator capability' to reject a load of 2600 kW without tripping. The generator voltage shall not exceed 5000 volts during snd following the lu d rejection.

4. Simulating a loss of offsite power

by itself, end:

a) For Divisions 1 and 2 and for Unit 2 Division 2:

1) Verifying de-energitation of the emergency busses and I load shedding from the emergency busses.

l l

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE-UNIT 1 3/4 8-4 Amendment No. 72

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 13 seconds,. energizes the auto-connected loads and operates for greater than or equal

to 5 minutes while its generator is so loaded. After i energization, the steady-state voltage and frequency of the emergency busses shall be maintained at 4160 1150 volts and 60 11.2 Hz during this test.

b) For Division 3: ,

1) Verifying de-energization of the emergency. bus.

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency bus with its loads with-in 13 seconds and operates for greater than or equal to 5 minutes while its generator is so loaded. After energization, the steady-state voltage and frequency of-the emergency bus shall be maintained.at 4160 1150 volts and 60 1.~2 Hz during this test. '

5. Verifying that on an ECCS actuation test signal, without loss of offsite power, diesel generators 0, 1A, and 1B start

on the auto-start signal and operate on standby for-greater than or equal to 5 minutes. The generater voltage and frequency shall be 4160 +416, -150 volts and 60 +3.0, -1.2 Hz within 13 seconds after the auto-start signal; the steady-state generator voltage and frequency shall be maintained within these limits during t51s test.

i Simulating a loss of offsite power in conjunction with an ECCS 6.

actuation test signal,* and: j a) For Divisions 1 and 2:

1) Verifying de-energization of the emergency busses and load shedding from the emergency busses.

I f-

_=.a.

L' *All planne6 diesel generatar starts performed for the purpose of meeting these surveillance requiremeros may be preceded by an engine prelube period, i as recommended by the manufacturce.

LASALLE-UNIT 1 3/4 8-5 Amendment No. 72 l l l

1

o 1

ELECTRICAL POWER SYSTEMS .

SURVEILLANCE REQUIREMENTS (Continued)

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 13 seconds, energizes the auto-connected emerge; icy loads through the load sequencer and operates for greater-than or equal-to i 5 minutes while its generator is loaded with the emergency loads. After energization, the steady state voltage'end frequency of the emergency busses shall be maintained at 4160 1416 volts and 60 1.2 Hz during this test.

b) For Division 3: ,

1) Verifying de-energization of the emergency bus.

2) Verifying the diesel generator starts on the auto-start l signal, energizes the emergency bus with its loads within 13 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with t the emergency loads. After.energization, the steady ,

state voltage and frequency of'the emergency bus.

shall be maintained at 4160 1416 volts and 60 11.2 Hz .'

during this test.

7. Verifying that all diesel generator 0,1A, and 1B automatic trips except the following are automatically bypassed on an ECCS actuation signal:

a) For Divisions 1 and 2 - engine overspeed, generator '

differential current, and emergency manual stop, b) For Division 3 - engine _overspeed, generator differential or overcurrent, and emergency manual stop. ,

l. 8. Verifying the diesel generator operates *-for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . ;

During the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months of this test, the diesel generator shall.be loaded to greater than or equal to 2860 kW and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shall be loaded to 2400 kW to 2600 kW.*** The generator voltage and frequency shall be 4160 +420, -150 volts and 60.+3,0, -1,2 Hz within 13 seconds after the start signal; the steady state

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period,

.as recommended by the manufacturer.

- - Transients, outside of this load band, do not invalidate the surveillance tests.

LASALLE-UNIT 1 3/4 8-6 Amendment No. 72

ELECTRICAL POWER. SYSTEMS-

, SURVEILLANCE REQUIREMENTS (Continued) generator voltage and frequency shall be~ maintained within these

,_ limits during this test. Within 5 minutes after completing.this L 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test, perform Surveillance Requirement 4.8.1.1.2.d.4.a).2) l and b).2).**

9. Verifying

that the auto-connected loads to each diesel generator do not exceed the 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months rating of 2860 kW. i

10. Verifying the diesel generator's capability

to:

, a) Synchronize with the offsite power source while the .

generator is loaded with its emergency loads upon a' simulated' restoration of offsite power, b) Transfer its loads to the offsite power source, and c) _Be restored to its standby status.

, 11. Verifying that with diesel generator O',1A, and 18 operating

in a test mode and connected to its bus:

a) For Divisions 1 and 2, that a simulated ECCS actuation signal overrides the test mode by returning the diesel ;

generator to standby operation, b) For Division 3, that a simulated trip of the diesel generator overcurrent relay trips the SAT feed breaker to bus 143 and that the direel generator continues to supply normal bus loads.

12. Verifying that the automo ~ c load sequence timer is OPERABLE with the interval betweet. aach load block within 110% of its design interval for diesel generators 0 and 1A.=

13. Verifying that the following-diesel generator lockout features prevent diesel generator. operation only when required:

All planned diesel generator starts periormed for the purpose of meeting

~

4 these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

- If Surveillance Requirements 4.8.1,1.2.d.4.a).2) and/or b).2) are not satisfactorily completed, it is not necessary to repeat the preceding 24 h>ur test. Instead, the diesel generator may be operated at 2600 kW for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or until operating temperature has stabilized.

i LASALLE-UNIT 1 3/4 8-7 Amer.dment No. 72

F s .

t

' ELECTRICAL POWER SYSTEMS ;

SURVEILLANCE REQUIREMENTS (Continued) t a) Generator underfrequency -

b)- 1.ow lube oil pressure.

c) High jacket cooling temperature.

d) Generator reverse power. p e)- Generator overcurrent.

f) Generator loss of field. ;

g) Engine cranking lockout.

e. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting diesel gener-ators 0,1A, and IB simultaneously,f during shutdown, and verifying.

that all three diesel generators acc'elerate to 900 rpm +5, -2%-in less than or equal to 13 seconds.

f. At least once per 10 years by: .

1. Draining each fuel oil storage tank, removin( the accumulated sediment and cleaning the tank using a sodium hypochlorite or equivalent solution, and c

2. Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND, of the ASME Code ~in accordance with ASME Code Section 11, Article IWD-5000.

'4.8.1.1.3 Reports - All diesel generator failures, valid or non-valid, shall i be reported to the Commission pursuant to Specification 6.6.C within 30 days.

Reports of diesel generator failures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

If the number of failures in the last 100 valid tests, on a per nuclear unit basis, is greater than or equal to 7, the report shall-be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977 l

l .

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLEUNIT 1 3/4 8-7a Amendment No. 72 l r - __ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . . . _ . _ _ _ . _ _ _ _ _

i I

-e .

-ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

TABLE 4.8.1.1.2-1 DIESEL GENERATOR TEST SCHEDULE NUMBER OF FAILURES IN NUMBER OF FAILURES IN l

LAST 20 VALIO TESTS

LAST 100 VALIO TESTS

TEST FREQUENCY

<1 -<4 At least once per 31 days

-> 2 ** >5

~ At least once per 7 days l

Criteria for determining number of failures and number of valid tests shall be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, but determined on a per diesel generator basis.

With the exception of the semi-annual fast start, no starting time require-ments are required to meet the valid test requirements of Regulatory Guide 1.108.

For the purposes of determining the required test frequency, the previous test failure count may be reduced to zero if:

1

1) a complete diesel overhaul to like-new condition is completed i (provided that the overhaul, including appropriate post-maintenance i

operation and testing, is specifically approved by the manufacturer), and

2) if acceptable reliability has been demonstrated. The reliability j criterion shall include the successful completion of 14 consecutive tests in a single series structured as follows:

a. ten of these tests shall be performed in accordance with the routine Surveillance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, and

b. four tests shall be performed in accordance with @ 184-day i testing requirement of Surveillance Requirements 4.8.1.1.2.a.4

_c and 4.8.1.1.2.a.5.

i":

If this criterion is not satisfied during the first series of tests,

, any alternate criterion to be used to reset the failure count to

zero requires NRC approval.

i **The associated test frequency shall be maintained until 7 consecutive failure free demands have been performed AND the number of failures in the T last 20 valid demands has been reduced to one, s

LASALLE-UNIT 1 3/4 8-7b Amendment No. 72

d 3/4.8 ELECTRICAL POWER SYSTEMS BASES 3/4.8.1 and 3/4.8.2 A.C. SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS l

Tne OPERABILITY of the A.C. and 0.C. power sources and associated distribution systems during operation ensures that sufficient power will be available to supply the safety related equipment required for (1) the safe shutdown of the facility and (2) the mitigation and control of accident conditions within the facility. The minimum specified independent'and redundant A.C. and 0.C. power sources and distribution systems satisfy the requirements of General Design Criterion 17 of Appendix A to 10 CFR Part 50.

The ACTION requirements specified for the levels of degradation of the '

power sources provide restriction upon continued facility operation commensurate with the level of degradation. ACTION statements have been included in the specification to cover all situations where either one A.C.

source or a combination of two A.C. sources are inoperable. ACTION statements c, e, and f are intended to be followed to completion once entered and should not be exited until both A.C. sources are restored. The OPERABILITY of the power sources are consistent with the initial condition assumptions of the accident ,

analyses and are based upon maintaining at least Division I or II of the onsite A.C. and 0.C. power sources and associated distribution systems OPERABLE during accident conditions coincident with an assumed loss of offsite power and single failure of one of the two onsite A.C. sources. Division III supplies the high pressure core spray (HPCS) system only.

The OPERABILITY of the minimum specified A.C. and 0.C. power sources ana associated distribution systems during shutdown and. refueling ensures that

,(1) the facility can be maintained in the shutdown or refueling condition for extended time periods and (2) sufficient instrumentation and control (

. capability is available for monitoring and maintaining the unit status. '

The surveillance requirements for demonstrating the OPERABILITY of the .

diesel generators are in accordance with the recommendations of Regulatory Guide 1.9,:" Selection of Diesel Generator-Set-Capacity for Standby Power Sup-plies," March 10, 1971, with the exception noted in Appendix B to the FSAR, and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as

.0nsite' Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977.

The diesel generators are equipped with a. pre-lubrication system which maintains a continuous flow of oil to the diesel engine moving parts while the engine is shutdown. The purpose of this system is to increase long term diesel generator reliability by reducing the stress and wear caused by frequent dry starting of the diesel generator. The diesel generator pre-lube may be accomplished either through, normal operation of the installed pre-lubrication 1 system, or by manual pre-lubrication of the diesel generator in accordance with manufacturers instructions. Performance of an idle start of the diesel generator is not considered to be a means of pre-lubrication.

L l.

i LA SALLE UNIT 1 B 3/4 8-1 Amendment No. 72 l

i ELECTRICAL POWER SYSTEMS BASES c A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued)

Analysis has shown that testing, which includes a semi-annual fast start of the diesel gene,ators, is sufficient to demonstrate the capability of the onsite A.C. power systems to mitigate the consequences of the design basis event.for the plant (i.e., large LOCA coincident with a loss of offsite power).

All other engine' starts, for the purpose of meeting the diesel generator surveillance requirements, may be preceded by a warm-up period of low speed operation (idle start), and gradual loading procedures, as recommended by the manufacturer, so that the mechanical stress and wear on the diesel generators is minimized. The load band of 2400 kW to 2600 kW is provided only to avoid routine overloading of the diesel generators. Momentary transients, outside the load band, due to changing bus loads do not invalidate the surveillance tests. i The surveillance requirements for demonstrating the OPERABILITY of the unit batteries are in accordance with the recommendations of Regulatory Guide 1.129, " Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, '

"IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large lead Storage Batteries for Generating Station and Substations."

Verifying average electrolyte temperature above the minimum for which the battery was sized, total . battery terminal voltage onfloat charge, connection resistance values and the performance of battery service and discharge tests ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated capacity.

Table 4.8.2.3.2-1~ specifies the normal limits for each designated pilot cell and each connected cell for electrolyte level, float voltage and specific gravity. The limits for the designated pilot cells float voltage and specific gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity. The normal limits for each cennected cell for float voltage and specific gravity, greater than 2.13 volts and not more than 0.020 below the manufacturer's full charge specific gravity with an average specific gray.)ty of all the coanected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.

Operation with 3 battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8.2.3.2-1 is permitted for up

.to 7 days. During this 7 day period: (1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability; (2) the allowable value for the average specific gravity of all the cells, not more than 0.020 below the manufacturer's recommended full charge 1

i LA SALLE UNIT 1 B 3/4 8-2 Amendment No. 72 1

i i

ELECTRICAL POWER SYSTEMS BASES A.C. SOURCES AND ONSITE POWER DISTRIBUTION SY QCMS (Continued) specific gravity, ensures that the decrease in rating will be less than the safety

-margin provided in sizing; (3) the allowable value for an individual cell's speci-fic gravity ensures that an individual cell's specific gravity will not be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.07 volts, ensures the battery's capability to perform its design function.

3/4.8.3 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES Primary containment electrical penetrations and penetration conductors are protected by either de-energizing circuits not reouired during reactor operation or demonstrating the OPERABILITY of primary and backup overcurrent protection circuit breakers by periodic surveillance.

The surveillance requirements applicable to lower voltage circuit breakers and fuses provides assurance of breaker and fuse reliability by testing at least one representative sample of each manufacturers brand of circuit breaker and/or fuse. Each manufacturer's molded case and metal case circuit breakers and/or fuses are grouped into representative samples which are then tested on a ruloi-ing basis to ensure that all breakers and/or fuses are tested. If a wide variety exists within any manufacturer's brand of molded case circuit breakers and/or fuses, it is necessary to divide that manufacturer's breakers and/or fuses into groups and treat each group as a separate type of breaker or fuses for surveil-lance purposes.

The bypassing of the motor operated valves thermal overload protection continuously or during accident conditions by integral bypass devices ensures that the thermal overload protection will not prevent safety related valves from per-forming their function. The Surveillance Requirements for demonstrating the bypassing of the thermal overload protection continuously and during accident conditions are in accordance with Regulatory Guide 1.106 " Thermal Overload Pro-tection for Electric Motors on Motor Operated Valves", Revision 1, March 1977.

LA SALLE UNIT 1 B 3/4 8-3 Amendment No. 72

1 8

a L

3/4'.8 ELECTRICAL POWER SYSTEMS 3/4.8.1 A.C. SOURCES A.C. SOURCES - OPERATING LIMITING CONDITION FOR OPERATION ;

3. 8.1.1 As a minimum, the following A.C. electrical power sources shall be OPERABLE:

a. Two physically independent circuits between the offsite transmission network and the onsite Clast 1E distribution system, and

b. Separate and independent diesel generators

0, lA, 2A and 2B with:

1. For diesel generator 0, 1A and 2A: !

a) A separate day fuel tank containing a minimum of 250 gallons of fuel, i b) A separate fuel storage system containing a minimum of ,

31,000 gallons of fuel. !

2. For diesel-generator 28, a separate fuel storage tank and a day tank containing a combined minimum of 29,750 gallons of fuel.

3. A separate fuel transfer pump.

APPLICABILITY: OPERATIONAL CONDITIONS 1, 2, and 3.

ACTION:

a. With one offsite circuit of the above required A.C. electrical power-sources inoperable, demonstrate the OPERASILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If any.of the diesel generators have not been successfully tested within the~

past 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , demonstrate their OPERABILITY by performing Surveillance Requirement 4.8.1.1.2.a.4 for each such diesel generator, separately, within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore the offsite circuit to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUT 00WN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . l

b. With either the 0 or 2A diesel generator inoperable, demonstrate the-OPERABILITY of the above required A.C. offsite sources by performing. a Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once -'

per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the diesel generator became inoperable '

due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE

^See page 3/4 8-1(a).

1 1

l LASALLE - UNIT 2 3/4 8-1 Amendment No. 56 1

ELECTRICAL POWER SYSTEMS l LIMITING CONDITION FOR OPERATION (Continued) ,

1 l

'*For the purposes of completing technical specification surveillance !

requirements 4.8.1.1.2.d.1 and 4.8.1.1.2.f.1, as part of a pre planned !

preventative maintenance program, on the 0 diesel generator the requirements (

of. action statements b are modified to:

1. Eliminate the requirement for performing technical specification surveillance requirements 4.8.1.1.1.a on each operable A.C. source, ,

immediately and once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter, when the 0 diesel generator is declared inoperable.

2. Allow an additional 96 hours0.00111 days 0.0267 hours 1.587302e-4 weeks 3.6528e-5 months in excess of the 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months allowed in action statement b for the 0 diesel generator to be inoperable.

Provided that the following conditions ace met: I A. Unit 1 is in operational condition 4 or 5 or defueled prior to taking the 0 diesel generator out of service. j B. Surveillance requirements 4.8.1.1.1.a and 4.8.1.1.2.a.4 are i successfully completed, for the offsite power sources and the 1A and 2A diesel generators, within 48 hours5.555556e-4 days 0.0133 hours 7.936508e-5 weeks 1.8264e-5 months prior to removal of the 0 1 diesel generator from service.

C. No maintenance _ is performed on the offsite circuits or the 1A or 2A diesel generators, while the 0 diesel generator is inoperable. ,

D. Technical specification requirement 4.8.1.1.1.a is performed daily, while the 0 diesel generator is inoperable.

E. The control circuit for the unit cross-tie circuit breakers between buses 142Y and 242Y are temporarily modified to allow the breakers to be closed with a diesel generator feeding the bus, while the 0 diesel generator is inoperable.

The provisions of ' technical specification 3. 0.4 are not applicable.

' LASALLE - UNIT 2 3/4 8-la Amendment No. 56 a

-o .

ELECTRICAL-POWER SYSTEMS LIMITING CONDITION FOR OPERATION (Continued)

ACTION::(Continued) diesel generators, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within-24 hours *. Restore the diesel generator to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ,

c. With one offsite circuit of the above required A.C. sources and diesel generator 0 or 2A of the above required A.C. electrical power sources inoperable, demonstrate.the OPERABILITY of the-remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the i

,. diesel generator became inoperable due to any cause other than l'

preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining OPERABLE diesel generators, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *. Restore at least one of the inoperable A.C, sources to l OPERABLE status within 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months or be in at least HOT SHUTDOWN

within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTOOWN within the following

l. 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . Restore at least two offsite circuits and diesel

' generators 0 and 2A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months .from the time L of initial loss or be in at least HOT SHUTDOWN within the'next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

d. With diesel generator'2B of the above required A.C. electrical power sources inoperable, demonstrate the OPERABILITY of the offsite A.C.

sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the diesel generator became inoperable due to any cause other than preplanned preventive maintenance or testing, demonstrate the OPERABILITY of the remaining 0PERABLE diesel generators, separately, by performing

! Surveillance Requirement 4.8.1.1.2.a.4 within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months * ' Restore diesel generator 2B to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare <

-the HPCS system inoperable and take the ACTION required by specification 3.5.1.

! e. With both of the above required offsite circuits inoperable, demonstrate the OPERABILITY of the remaining A.C. sources, separately, by performing Surveillance Requirement 4.8.1.1.2.a.4 within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months unless the diesel generators are already operating.

Restore at least one offsite circuit to OPERABLE status witnin 24

,. hours, or be in at least HOT SHUTDOWN within the.next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months .

With only one offsite circuit restored to OPERABLE status, restore

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY. The provisions of Specification 3.0.2 are not applicable.

LASALLE - UNIT 2 3/4 8-2 Amendment No. 56

i ELECTRICAL POWER SYSTEMS.

LIMITING CONDITIONS FOR OPERATION (Continued)

ACTION (Continued) at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months ;

from the time of initial loss or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following-24 hours. A successful test (s) of diesel generator OPERABILITY per Surveillance Requirement 4.8.1.1.2.a.4, performed under this ACTION statement for the OPERABLE diesel ,

generators, satisfies the diesel generator test requirements of ACTION statement a.

f. With diesel generators 0 and 2A of the above required A.C.

electrical power sources inoperable, demonstrate the OPERABILITY of the remaining A.C. sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter, and Surveillance Requirement 4.8.1.1.2.a.4 for the 2B and 1A diesel generators, separately, within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months *. Restore at least one of the inoperable diesel generators 0 or 2A to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months , or be in at least HOT SHUTDOWN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTOOWN within the following 24 hoars. Restore both diesel generators 0 and 2A to OPERABLE status withir, 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months , from the time of initial loss, or be in at least HOT SEUT00WN within the next 12 hours1.388889e-4 days 0.00333 hours 1.984127e-5 weeks 4.566e-6 months and in COLD SHUTDOWN within the following 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months ,

g. With diesel generator 1A of the above required A C. electrical power sources inoperable, demonstrate the OPERABILITY cf the remaining A C. ;

sources by performing Surveillance Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter. If the 1A diesel generator became inoperable due to any cause other than preplanned ;

preventive maintenance or testing, demonstrate the OPERABILITY of the 2A diesel generator by performing Surveillance Requirement 4.8.1.1.2.a.4, within'24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months *. Restore the inoperable diesel generator 1A to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months or declare standby gas treatment system subsystem A, Unit 1 drywell and suppression chamber hydrogen recombiner system, and control room and auxiliary electric equipment room emergency filtration system train A :

inoperable, and take the ACTION required by specifications 3.6.5.3, 3.6.6.1, and 3.7.2. Continued performance of Surveillance Requirement 4.8.1.1.1.a is not required provided the above systems are declared inoperable and the action of their respective specifications is takea.

This test is required to be completed regardless of when the inoperable diesel generator is restored to OPERABILITY. The provisions of Specification 3.0.2 are not applicable.

l-I i-LASALLE - UNIT 2 3/4 8-2a Amendment No. 56

1 .

ELECTRICAL POWER SYSTEMS LIMITING CONDITIONS FOR OPERATION (Continued)

ACTION (Continued)

h. With one offsite circuit of the above required A.C. electrical power .

sources and diesel generator 2B inoperable, apply the requirements-of ACTION a and d specified above.

i. With either diesel generators 0 or 2A inoperable and diesel '

generator 2B inoperable, apply the requirements of ACTION b and d specified above.

j. With one offsite circuit of the above required A.C. electrical power sources and diesel' generator 1A inoperable, apply the requirements of ;

ACTION a and g specified above.

k. With diesel generator 28 and diesel generator 1A inoperable, apply !

the requirements of-ACTION d and g specified above.

1. With diesel generator 0 and diesel generator 1A inoperable, apply the requirements of ACTION b and g specified above.

i LASALLE - UNIT 2 3/4 8-2b Amendment No. 56

ELECTRICAL POWER SYSTEMS.

-SURVEILLANCE REQUIREMENTS 4.8.1.1.1 Each of the above required in' dependent circuits between the offsite transmission network and the onsite Class 1E distribution system shall be:

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments and indicated power availability, and

b. Demonstrated OPERABLE at least once per 18 months during shutdown by manually transferring unit power supply from the normal circuit to the alternate circuit.

4.8.1.1.2 Each of the above required diesel generators shall be demonstrated OPERABLE:*

a. In accordance with the frequency specified in Table 4.8.1.1.2-1 on a STAGGERED TEST BASIS by:

1. Verifying the fuel level in the day fuel tank. ;

2. Verifying _the fuel level in the fuel storage tank.

3. Verifying the fuel transfer pump starts and transfers fuel from the storage system to the day fuel tank.

4. Verifying the diesel starts from ambient condition and accelerates to 900 rpm +5%, -2% in less than or equal to 13 seconds **. The generator voltage and frequency shall be 4160 1150 volts and 90 +3.0, -1.2 Hz within 13 seconds ** after the start signal.

5. Verifying the diesel generator is synchronized, and then loaded to 2400 kW to 2600 kW*** within 60 seconds **, and operates with this- 1 load for at least 60 minutes.

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

- Surveillance testing to verify the diesel generator start (13 second) and load (60'second) times from umbient conditions shall be performed at least once per 184 days. All other engine starts performed for the purpose of meeting these surveillance requirements may be conducted in accordance with warmup and loading procedures, as recommended by the manufacturer, in order to minimize mechanical stress and wear on the diatel generator caused by fast starting and loading of the diesel generator.

- - Transients, outside of this load band, do not invalidate the surveillance l tests.

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LASALLE - UNIT 2 3/4 8-3 Amendment No. 56 l

i

-ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS

6. Verifying the diesel generator is aligned to provide standby power to the associated emergency busses.

7. Verifying the pressure in all diesel generator air start receivers to be greater than or equal to 200 psig,

b. At least once per 31 days and after each operation of the diesel where the period of operation was greater than or equal to I hour by checking for and removing accumulated water from the day fuel tanks,

c. At least once per 92 days and from new fuel oil prior to addition to the storage tanks by verifying that a sample obtained in accordance with ASTM-0270-1975 has a water and sediment content of less than or equal to 0.05 volume percent and a kinematic tiscosity la 40*C of gteater than or equal to 1.9 but less than or equal. to 4.1 when tested tn accordance with ASTM-0975-77, and an impurity level of I less than 2 mg of insolubles per 100 ml when tested in accordance with ASTM-02274-70,

d. At least once per 18 months during shutdown by:

1. Subjecting the diesel to an inspection in accordance with i l procedures prepared in conjunction with its manufacturer's l- recommendations for this class of standby service.

l 2. Verifying the diesel generator capability *'to reject a load of greater than or equal to 1190 kW for diesel generator 0, greater a than or equal to 638 kW for diesel generators 1A and 2A, and '

greater than or equal to 2381 kW for diesel generator 2B while '

maintaining engine speed less than or equal to 75% of the l' L difference between nominal speed and the overspeed trip setpoint E or 15% above nominal, whichever is less. -

3. Verifying the diesel generator capability

to reject a load of ;

2600 kW without tripping. The generator voltage shall not-exceed 5000 volts during and following the load rejection. 4

4. Simulating a loss of offsite power

by itself, and:

a) For Divisions 1 and 2 and for Unit 1 Division 2:

1) Verifying de-energization of the emergency busses and' load shedding from the emergency busses.

i

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE - UNIT 2 3/4 8-4 Amendment No. 56

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 13 seconds, energizes the auto-connected loads and operates for greater than or equal-to 5 minutes while its generator is.so loaded. After energization, the steady-state voltage and frequency of the emergency busser shall be maintained at 4163 1150 volts and 60 11.2 Hz during this test.

b) For Division 3:

1) Verifying de-energization of the emergency bus.

' 2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency bus with its loads with-in 13 seconds and operates for greater than or equal to 5 minutes while its generator is so loaded. After energization, the steady-state voltage and frequency of the emergency bus shall be maintained at 4160 1150 volts and 60 11.2 Hz during this test.

5. Verifying that on an ECCS actuation test signal, without loss of offsite power, diesel generators 0, 2A, and 2B start

on the auto-start signal and operate on standby for greater than or equal to 5 minutes. The generator voltage and frequency shall be 4160 +416, -150 volts and 60 +3.0, -1.2 Hz within 13 seconds after the auto-start signal; the steady-state generator voltage and frequency shall be maintained within these limits during this test.

6. Simulating a loss of offsite power in conjunction with an ECCS actuation test signal,* and:

a) For Divisions 1 and 2:

1) Verifying de-energization-of the emergency busses and load shedding from the emergency busses.

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE - UNIT 2 3/4 8-5 Amendment No. 56

4 4 'f l

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)

2) Verifying the diesel generator starts on the auto-start signal, energizes the emergency busses with permanently connected loads within 13 seconds,-energizes the auto-connected emergency loads through the load sequencer and operates for greater than or equal to 5 minutes while its generator-is loaded with the-emergency loads. After energization, the steady ,

state voltage and frequency of the emergency busses shall be maintained at 4160 1416 volts and 60 11.2 Hz-during this test.

b) For Division 3:

1) Verifying de-energization of the emergency bus.

2) Verifying the diesel-generator starts on the auto-start signal, energizes the emergency bus with its loads within 13 seconds and operates for greater than or equal to 5 minutes while its generator is loaded with the emergency loads. After energization, the steady state voltage and frequency of the emergency bus shall be maintained at 4160 1416 volts and 60 11.2 Hz '

'during this test.

7. Verifying that all diesel generator 0, 2A, and 2B automatic trips- 7 except the following are automatically bypassed on an ECCS ,

actuation signal: ,

a) For Divisions 1 and 2 - engine overspeed,-generator differential current, and emergency manual stop.

b) For Division 3 - engine overspeed, generator differential-or overcurrent, and emergency manual stop.

8. Verifying the diesel generator operates

for at least 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months .

During the first 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months cf this test, the diesel generator shall be loaded to greater than or equal to 2860 kW and during the remaining 22 hours2.546296e-4 days 0.00611 hours 3.637566e-5 weeks 8.371e-6 months of this test, the diesel generator shall be loaded to 2400 kW to 2600 kW.*** The generator voltage and frequency shall be 4160 +420, -150 volts and 60 +3.0, -1.2 Hz ,

within 13 seconds after the start signal; the steady-state :

All planned diesel generator starts performed for the purpose of meeting j these surveillance requirements may be preceded by an engine prelube period, l as recommended by the manufacturer.

- - Transients, outside of this load bano, do not invalidate the surveillance tests.

LASALLE - UNIT 2 3/4 8-6 Amendment No. 56 i

ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) generator voltage and frequency shall be maintained within these limits during this test. Within 5 minutes after completing this.

24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test, perform Surveillance Requirement 4.8.1.1.2.d.4.a).2)

'and b).2).**

9. Verifying

that the auto-connected loads to each diesel generator do not exceed the 2000 hour0.0231 days 0.556 hours 0.00331 weeks 7.61e-4 months rating of 2860 kW.

[ 10. Verifying the diesel generator's capability

to: j i

a) Synchronize with the offsite power source while the i generator is loaded with its emergency loads upon a simulated 1 f restoration of offsite power, '

b) Transfer its loads to the offsite power source,-and. .

L c) Be restored to its standb status.

11. Verifying that with diesel generator 0, 2A, and 28 operating

in a '

j test mode and connected to-its bus: 7 i

i a) For Divisions 1 and 2, that a simulated ECCS actuation I

signal overrides the test mode by returning the diesel i generator to standby operation. !

b) For Division 3, that a simulated trip of the diesel

- 1 generator overcurrent relay trips the SAT feed breaker.to y bus 243 and that the diesel generator continues to supply !

normal bus loads, i

12. Verifying.that the automatic load sequence timer is OPERABLE I with the interval between each load. block within 110% of its {

design interval for diesel generators 0 and 2A,

13. Verifying that the following diesel generator lockout; features !

prevent diesel generator operation only when required-

]

l l *All planned diesel generator starts performed for the purpose of meeting I 1 these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer, j

- If Surveillance Requirements 4.8.1.1.2.d.4.a) 2) and/or b).2) are not satisfactorily completed, it is not necessary to repeat the preceding 24 hour2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months test. Instead, the diesel generator may be operated at 2600 kW for 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months or until operating temperature has stabilized.

l.

LASALLE - UNIT 2 3/4 8-7 Amendment No. 56 L

g'=

ELECTRICAL POWER SYSTEMS S_URVEILLANCE REQUIREMENTS (Continued) a) Generator underfrequency.

b) Low lube oil pressure, c) High jacket cooling temperature, d) Generator reverse power.

e) Generator overcurrent.

f) Generator loss of field.

g) Engine cranking lockout.

e. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting diesel gener-ators 0, 2A, and 2B simultaneously,* during shuudown, and verifying that all three diesel generators accelerate to 900 rpm +5, -2% in less than or equal to 13 seconds.

f. At least once per 10 years by:

1. Draining each fuel oil storage tank, removing the accumulated sediment and cleaning the tank using a sodium hypochlorite or -

equivalent solution, and

2. Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND, of the ASME Code in accordance with ASME Code Section 11, Article IWD-5000.

4.8.1.1.3 Reports - All diesel generator failures, valid or non-valid, shall be reported to the Commission pursuant to Specification 6.6.C within 30 days.

Reports of diesel generator failure". shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August.1977.

If the number of failures in the last 100 valid tests, on a per nuclear unit basis, is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1, August 1977.

All planned diesel generator starts performed for the purpose of meeting these surveillance requirements may be preceded by an engine prelube period, as recommended by the manufacturer.

LASALLE - UNIT 2 3/4 8-7a Amendment No. 56

l l

l ' ELFDRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS (Continued) i TABLE 4.8.1.1.2-1 DIESEL GENERATOR TEST SCHEDULE i NUMBER OF FAI'_URES IN NUMBER OF FAILURES IN LAST 20 VALIO TESTS

LAST 100 VALID TESTS

TEST FREQUENCY

l. 11 14 At least once per 31 days 1 2 ** 15 At least.once per l 7 days Criteria for determining number of failures and number of valid tests shall-be in accordance with Regulatory Position C.2.e of Regulatory Guide 1.108, Revision 1, August 1977, but determined on a per diesel generator basis.

With the exception of the semi-annual fast start, no starting time require-ments are required to. meet the valid test requirements of Regulatory Guide 1.108.

1 i_ For the purposes of determining the required test frequency, the previous

! test failure count may be reduced to zero if:

1) a complete diesel overhaul to like-new condition is completed (provided that the overhaul, including appropriate post-maintenance l- operation and testing, is specifically approved by the manufacturer), and l 2) if acceptable reliability hcs been demonstrated. The reliability criterion shall include the successful completion of 14 consecutive tests in a single series structured as follows:

a. ten of these tests shall be per,%rmed in accordance with the l

routine Surveillance Requirements 4.8.1.1.2.a.4 and 4.8.1.1.2.a.5, and

b. four tests shall be performed in accordance with the 184-day .

testing requirement of Surveillance Requirements 4.8.1.1.2.a.4 '

and 4.8.1.1.2.a.5.

If this criterion is not satisfied during the first series of tests, l; any <ilternate criterion to be used to reset the failure count to zero requires NRC approval.

- The associated test frequency shall be maintained until 7 consecutive failure free demands have been performed AND the number of failures in the last 20 valid demands has been reduced to one.

LASALLE - UNIT 2 3/4 8-7b Amendment No. 56 ,

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L.= ,

1 3/4.8 ELECTRICAL POWER SYSTEMS l BASES 3/4.8.1 and 3/4.8.2 A.C. SOURCES and ONSITE POWER DISTRIBUTION SYSTEMS The OPERABILITY of the A.C. and D.C. power sources and associated distribution systems during operation ensures that sufficient power will be f; available to supply the safety related equipment required for (1) the safe I shutdown of the facility and (2) the mitigation and control of accident conditions within the facility. The minimum specified independent and h redundant A.C. and D.C. power sources and distribution systems satisfy the !

requirements of General Design Criterion 17 of Appendix A to 10 CFR Part 50. i The ACTION requirements specified for the levels of degradation of the power sources provide restriction upon continued facility operation commensurate with the level of degradation. ACTION statements have been included in the specification to cover all situations where either one A.C.

source or a combination of two A.C. sources are inoperable. ACTION statements c, e, and f are intended to be followed to completion once entered and should not be exited until both A..C. sources are restored. The OPERABILITY of the power <

sources are consistent with the initial condition assumptions of the accident 4 analyses and are based upon maintaining at least Division I or II of the onsite A.C. and D.C. power sources and associated distribution systems 4 OPERABLE during accident conditions coincident with an assumed loss of offsite '

power and single failure of one of the two oncite A.C.-sources. Division III supplies the high pressure core spray (HPCS. > am only, i

The OPERABILITY of the minimum speci'..ed A.C. and D.C. power sources and associateo distribution systems during shutdown and refueling ensures that i (1) the facility can be maintained in the shutdown or refueling condition for ,

extended time periods and (2) sufficient instrumentation and control ;

capability is available for monitoring and maintaining the unit status.

The surveillance requirements for demonstrating the OPERABILITY of the diesel generators are in accordance with the recommendations of Regulatory ;

Guide 1.9, " Selection of Diesel Generator Set Capacity for Standby Power Sup- '

plies," March 10, 1971, with the exception noted in Appendix B to the FSAR, and Regulatory Guide 1.108, " Periodic Testing of Diesel Generator Units Used as ;

Onsite Electric Power Systems at Nuclear Power Plants," Revision 1, August 1977.

The diesel generators are equipped with a pre-lubrication system which maintains a continuous flow of oil to the diesel engine moving parts while the engine is shutdown. The purpose of this system is to increase long term diesel generator reliability by reducing the stress and wear caused by frequent dry starting of the diesel generator. The diesel generator pre-lube may be accomplished either through, normal operation of the installed pre-lubrication system, or by manual pre-lubrication of the diesel generator in accordance with manufacturers instructions. Performance of an idle start of the diesel generator is not considered to be a means of pre-lubrication.

l LA SALLE - UNIT 2 B 3/4 8-1 Amendment No. 56

~

r ElfCTRICAL POWER SY.% TEM BASES A.C. SOURCES AND ONSITE POWER RISTRIBUTION SYSTEMS (Continued)

Analysis has shown that testing, which includes a semi-annual fast start of the aiesel generators, is sufficient to demonstrate the capability of the onsite A.C. power systems to mitigate the consequences of the design basis event for the plant (i.e., large LOCA coincident with a loss of offsite power).

All other engine starts, for the purpose of meeting the diesel generator surveillance requirements, may be preceded by a warm up period of low speed operation (idle start), and gradual loading procedures, as recommended by the manufacturer, so that the mechanical stress and wear on the diesel generators is minimized. The load band of 2400 kW to 2600 kW is provided only to avoid routine overloading of the diesel generators. Momentary transients, outside the load band, due to changing bus loads do not invalidate the surveillance tests.

The surveillance requirements for demonstrating the OPERABILITY of the unit batteries are in accordance with the recommendations of Regulatory Guide 1.129, " Maintenance Testing and Replacement of Large Lead Storage Batteries for Nuclear Power Plants," February 1978, and IEEE Std 450-1980, "IEEE Recommended Practice for Maintenance, Testing, and Replacement of Large Lead Storage Batteries for Generating Station and Substations."

Verifying average electrolyte temperature above the minimum for which the 4 battery was sized, total battery terminal voltage onfloat charge, connection

, resistance values and the performance of battery service and discharge tests I ensures the effectiveness of the charging system, the ability to handle high discharge rates and compares the battery capacity at that time with the rated capacity.

Table 4.8.2.3.2-1 specifies the normal limits for each designated pilot e ce r. and each connected cell for electrolyte level, float voltage and specific i gravity. The limits for the designated pilot cells float voltage and specific gravity, greater than 2.13 volts and 0.015 below the manufacturer's full charge specific gravity or a battery charger current that had stabilized at a low value, is characteristic of a charged cell with adequate capacity. The normal limits for each connected cell for float voltage and specific gravity, greater than 2.13 volts and not more than 0.020 below the manufacturer's full charge specific 4 gravity with an average specific gravity of all the connected cells not more than 0.010 below the manufacturer's full charge specific gravity, ensures the OPERABILITY and capability of the battery.

Operation with a battery cell's parameter outside the normal limit but within the allowable value specified in Table 4.8.2.3.2-1 is permitted for up to 7 days. Du.'.ng this 7 day period: (1) the allowable values for electrolyte level ensures no physical damage to the plates with an adequate electron transfer capability; (2) the allowable value for the average specific gravity of all the cells, not more than 0.020 below the manufacturer's recommended full charge

)

LA SALLE - UNIT 2 B 3/4 8-2 Amendment Nu. 56 y . . . . ..

ELECTRICAL p0WER SYSTEMS BASES A.C. SOURCES AND ONSITE POWER DISTRIBUTION SYSTEMS (Continued) specific gravity, ensures that the decrease in rating will be less than the safet*j margin provided in sizing; (3) the allowable value for an individual cell's speci-fic gravity ensures that an individual cell's specific gravity will not be more than 0.040 below the manufacturer's full charge specific gravity and that the overall capability of the battery will be maintained within an acceptable limit; and (4) the allowable value for an individual cell's float voltage, greater than 2.07 volts, ensures the battery's capability to perform its design function.

3/4.8.3 ELECTRICAL EQUIPMENT PROTECTIVE DEVICES Primary containment electrical penetrations and penetration conductors are protected by either de-energizing circuits not required during reactor operation or demonstrating the OPERABILITY of primary and backup overcurrent protection circuit breakers by periodic surveillance.

The surveillance requirements applicable to lower voltage circuit breakers i and fuses provides assurance of breaker and fuse reliability by testing at least one representative sample of each manufacturers brand of circuit breaker and/or fuse. Each manuf acturer's molded case end metal case circuit breakers and/or fuses are grouped into representative .amples which are then tested on a rotat- '

ing basis to ensure that all breakers and/or fuses are tested. If a wide variety exists within any manufacturer's brand (f molded case circuit breakers and/or fuses, it is necessary to divide that manufacturer's breakers and/or fuses into groups and treat each group as a separate type of breaker or fuses for surveil-lance purposes.

Tre bypassing of the motor operated valves thermal overload protection continuously or during accident conditions by integral bypass d1 vices ensures that the thartiid overload protection will not prevent safety related valves from per- i forming their function. The Surveillance Requirements for demonstratint the bypassirg of the thermal overload protection continuously and during accident conditions are in accordance with Regulatory Guide 1.106 " Thermal OveMoad Pro-tection for Electric Motors on Motor Operated Valves", Revision 1, March 1977.

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LA SALLE - UNIT 2 B 3/4 8-3 Amendment No. 56 )

l i

One First Nanonal Para Chcago, filinos O Commonwoolth Edloon K5aies Repir to rost one son 767 Chcago Innors 60690 0767 July 28, 1987 r i

c 6

Mr. Thomas E. Murley, Director Office of Nucleas Reactor Regulation U.S. Nuclear Regulatory Commission ,

Washington, DC 20555 ,

subject: Byron Station Units 1 and 2 Braidwood Station Units 1 and 2 Application for Amendment to ,

Facility Operating Licenses NpF-37 NPF-66, l and NPF-72 .

?

Appendix A. Technical Specifications ERC Docket Nos. 50-454. 50-455. 50-456 and 50-457

Dear Mr. Murley:

Pursuant to 10CFR '30.90, commonwealth Edison proposes to amend Appendix A, Technical Specifications, of Facility Operating Licenses NPF-37.

NPF-66, and NPF-72. The proposed amendment requests changes to Technical Specifications 3.8.1.1 and 4.8.1.1.2 to clarify how the gradual loading of the diesel engine is applied to minimize the mechanical stress and wear on the diesel generator. The new Technical Specification pages are contained in Attachment A. A summary of the proposed changes is also included in Attachment B.

The proposed changes have been reviewed and approved by both on-site and Off-site review in accordance with Commonwealth Edison Company procedures. We have reviewed this proposed amendment in accordance with 10 CFR $0.92(c) and determined that no significant hazards considerations !

exist. This evaluation is documented in Attachment C.

I commonwealth Edison is notifyihi the State of Illinois of our application for this amendment by transmitting a copy of this letter and its

! attachments to the designated State Official.

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6v034 O 1

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. . i Mr. Thomas E. Murley July 28, 1987 I

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

$150.00 is enclosed.

P; ease direct any questions you may have concerning this hatter to this office.

i Very truly yours, 1_ d%

S. C. Hunsader '

Nuclear Licensing Administrator crs

Enclosure:

Fee Remittance ,

Attachments (A): Proposed Technical Specification Changes (B): Summary of Proposed Changes (C): Evaluation of Significant Hazards Considerations cc: Resident Inspector - Byron Resident Inspector - Braidwood L. N. Olshan - WRR J. A. Stevens WRR Regional Office R111 M. C. Parker - State of 111.

1HED and (WO N to SUBS befo %(e me/ this,W4g- day of \. )d Ar , . 1987

. 04441 Notary Public l

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ATTAC'3ENT A ,

MOPOSED CHANGES TO APPENDIX A.

TECHNICAL SPECIFICATIOWS OF FACILITY .

ppfefgqWG LICEWSES NPF-37, NfF-66, and NPF-72 6

gylsftd Pages: 3/4 6-2 (Byron Station, only) 3/4 8-3 3/4 0-7 (Byron Station, only) t a

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l ELECTR] CAL POWER SYSTEMS-LIMITING CONDITION FOR OPERATION ACTION (Continued}

c. With one diesel generator inoperable in addition to ACTION a. or b. I above, verify that: j

1. All required systems, subsystems, trains, components and devices l that depend on the remaining OPERABLE diesel generator as a I source of emergency power are also OPERABLE, and ]

2. When in MODE 1, 2, or 3, the diesel-driven auxiliary feedwater I pump is OPERABLE and the other Unit's A Diesel Generator is '

OPERABLE,* if the inoperable diesel generator is the emergency l power supply for the motor-driven auxiliary feedwater pump.

If these conditions are not satisfied within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLU SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . >

d. With two of the above required offsite A.C. circ 0its inoperable, demonstrate the OPERABILITY of two diesel generators by performing Specification 4.8.1.1.2a.4) within 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months , unless the diesel gener-ators are already operating; restore at least one of the inoperable offsite sources to OPERABLE status within 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months . With only one offsite source restored, restore at least two offsite circuits to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in at least HOT STANDBY

- within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months ,

e. With two of the above required diesel generators inoperable, demonstrate the OPERABILITY of two offsite A.C. circuits by perform-ing Specification 4.8.1.1.la within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months and at least once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months thereafter; restore at least one of the inoperable diesel generators to OPERABLE status within 2 hours2.314815e-5 days 5.555556e-4 hours 3.306878e-6 weeks 7.61e-7 months or be in at least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . Restore at least two diesel generators to OPERABLE status within 72 hours8.333333e-4 days 0.02 hours 1.190476e-4 weeks 2.7396e-5 months from time of initial loss or be in least HOT STANDBY within the next 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months and in COLD SHUTDOWN within the following 30 hours3.472222e-4 days 0.00833 hours 4.960317e-5 weeks 1.1415e-5 months . .

vears after issuance of an operating licensi for Unit 1 the un' ".

diesel gen .ust be capable of providing power to bu ,

the LCO, ACTION and SURVEILL ,w a rements of Specif 4.8.1.3 shall be applicable. Subsequently, LC . . 2), and 3), and Surveillance Requirements 4.8.1.1. applicab Unit 2. A diesel as applicable for demons at the Unit 2, A diesel is OPE n emergency power or the Unit 1 motor-driven auxiliary feedwater pump.

BYRON - UNITS 1 & 2 3/4 8-2

QECTRICALPOWERSYSTEMS l l

SURVE!LLANCE REOUIREMENTS J 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the Onsite Class 1E Distribution System shall be:

a. Determined OPERABLE at least once per 7 days by verifying correct breaker alignments, indicated power availability, and

b. Demonstrated OPERABLE at least once per 18 months during shutdown by i transferring manually unit power supply from the normal circuit to '

the alternate circuit.

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a. In accordance with the frequency specified in Table 4.8-1 on a STAGGERED TEST BASIS by:

1) Verifying the fuel level in the day tank,

2) Verifying the fuel level in the fuel storage tank,

3) Verifying the fuel transfer pump starts and transfers fuel from the storage system to the day tank,

4) Verifying the diesel starts from a nbient coa.dition and accelerates to at least 600 rpm in less than or equal to 10 seconds.* The generator voltage and frequency shall be 4160 1 420 volts and 60 + 1.2 H within 10 seconds

after the start signal. The

, dies,el generator shall be started for this test by using one of the following signals:

a) Manual, or b) Simulated loss of ESF bus voltage by itself, or l c) Simulated loss of MF bus voltage in conjunction with an ESF actuation test signal, or d) An ESF actuation test signal by self.

5) Verifying the generator is synchron red,No$de to greater than or equal to 5500 kW in less than or 71 - O seco'nds", operates l

with a load greater than or equal to 5500 kW for at least 60 minutes, and

6) Verifying the diesel generator is aligned'to provide standby power to the associated ESF busses,

b. At least once per 31 days and after each operation of the diesel where the period of operation wsts greater than or equal to I hour by checking for and removing accumulated water from the day tanks; see. L sert "A"j N c_ x t Pye enerator start (10 sec) from ambient conditions shall .c at least once per -

in these surveillance er engine starts for the purpose of this surve): . . .ay be preceded by an engine pre-lube period an ..rmup procedures re om... & he manufacturer 50 stress and wear on the diesel engine is mini BYRON - UNITS 1 & 2 3/4 B-3

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TNSERT "A" 4

This time limit need only be verified to be met at least once per 184 days in these survaillance tests. All survaillance tests may be preceded by warmup procedures and, with the exception of once per 184 days, may also include gradual loading (h 60 seconds) as recommended by the manufacturer so the mechanical stress and wear on the diesel generator is minimized.

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ELECTRICAL POWER SYSTEMS SURVEILLANCE RE0VIREMENTS (Continued)

13) Verifying that the following diesel generator lockout f eatures prevent diesel generator starting only when required:

a) Turning gear ~ engaged, and b) Emergency stop,

g. At least once per 10 years or after any modifications which could affect diesel generator interdependence by starting both diesel generators simultaneously, during shutdown, and verifying that both diesel generators accelerate to at least 600 rpm in less than or equal to 10 seconds;

h. At least once per 10 years by: ,

1) Draining each fuel oil storage cank, removin'g the accumulated sediment and cleaning the tank using a sodium hypochlorite ,

solution, and -

2) Performing a pressure test of those portions of the diesel fuel oil system designed to Section III, subsection ND of the A5ME Code at a test pressure equal to 110 percent of the system design pressure, i.I/A least once per 31 days by: l b) Verifying the capability of crosstieing the Unit 2, A diesel I generator to Bus 141 by independently performing the following:

Synchronizing the Unit 2, A diesel generator to' Bus 241.

a) b) Closing breaker 1414, and, c) Closing breaker 2414.

1. 2) Verifying the capability of crosstieing the Unit 1 A diesel generator to Bus 241 by independently performing the following:

a) 1ynchronizing the Unit 1, A diesel generator to Bus 141, b) Closing breaker 1414, and c) Closing breaker 2414.

j. [tleastonceper18monthsby: .

1) Crosstieing the 2A diesel generator to Bus 141. ,

1. 2) Crosstieing the 1A diesel generator to Bus 241.

4.8.1.1.3 Reoorts - All diesel generator f ailures, valid or non-valid, shall-be reported to tne Commission pursuant to Specification 6.9.2. Reports of l oiesel generator f ailures shall include the information recommended in Regulatory Position C.3.b of Regulatory Guide 1.108, Revision 1 August 1977. 'If the numoer of failures in the last 100 valid tests (on a per nuclear unit basis) l is greater than or equal to 7, the report shall be supplemented to include the additional information recommended in Regulatory Position C.3.b of Regulatory l

Guide 1.108, Revision 1, August 1977.

l '

l *%: sme? '!aare e-!; !;p'ies to "COES 1, 2, Sad 3 !"d is act applicable u~t41 ? yee efter ir m ne ef e~ eperati^g 'icente fer U^it h

0nly required for Unit 1 operation in MODES 1, 2, or 3.

1. 0nly required for Unit 2 operation in MODES 1, 2, or 3.

BYRON - UNITS 1 & 2 3/4 6-7

l 1

i ELECTRICAL POWER SYSTEMS SURVEILLANCE REQUIREMENTS , _ _ , , , , , m 4.8.1.1.1 Each of the above required independent circuits between the offsite transmission network and the Onsite t, lass if Distribution System shall be:

a. Determined OPERABLE at lekst once per 7 days by verifying correct breaker alignments, indicated power availability, and q

b. Demonstrated OPERABLE at least once per 18 months during shutnown by l

transferring manually unit power supply from the normal circuit to the altsrnate circuit. ;

4.8.1.1.2 Each diesel generator shall be demonstrated OPERABLE:

a. In accordance with the frequency specified in Table 4.8-1 on a 1 STAGGERED (EST BASIS by:

1) Verifying the fuel level in the day tank, Verifying the fuel level in the fuel storage tank, I 2)

3) Verifying the fuel transfer pump sta'/ts and transfers fuel from the storage system t0 the day tank, I

4) Verifying the diesel starts frem ambient condit(on and accelerates to at least 600 . rpm in less than or equal to 10 seconds." The I generater voltage and frequency shall be 4160 1 420 volts and 60 + 1.2 H2 within 10 seconds" after the start signal. The .

diesel generator shall be started for this test by usir.g one of the ro11owing signals:

a) Manua), or b) Simulated loss of ESF bus voitage by itself, or

c) Simulated loss of ESF ous voltage in conjunction with an ESF actuation test signal, or ;

d) An ESF actuation test signal by c u. ~

the r)

5) Verifying the generator is synchroni 3,hloao 60 seconds to greater thaa '

or equal to 5500 kW in less then or K *, operates with a loed greater than or equal to 5500 kW for at least ..,

60 minutes, and ,

6) Verifying the diesel generator is aligned to provide standby power to the associated ESF busses.

b, At least once per 31 days and after each operation of the diesel where. the per-lod of operation was greater than or equal to I hour by checking for and removing accumulated water from the day tanks; g S ee. I ae r+ l'A" , w t Py e_

Dne ukW nenerator start (10 see) from ambient ennditions shaller engine starts h?

at least on'ce'iiEr M Syn n these surveillance .

for the purpose of this survei -

may be preceded by an engine pre-lube period ' -

warmup procedures reco ,i he manufacturer .to

_ -%etle anical stress and wear on the diesel engine is minim 12 .

BRAIDWOOD - UNITS 1 & 2 3/4 8 3

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-mayfolsciinclude gradual. loading (am.l60 seconds) as recommended by;the L imatwfacturer so the mechanical stress'and wear.on the diesel generator ts_-

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o e l ATTACMMENT B SUpmARY OF PROPOSED CHANGES One proposed change involves the removal of some interim notes for the Byron station Technical Specifications 3.e.1.1 and 4.8.1.1.2, that had been needed only until two years af ter issuance of an operating license for tyron Unit 1. These can now be deleted for Byron station. .

The other proposed change involves a clarification to a note ,

applicable to Technical Specification 4.8.1.1.2 regarding diesel engine starts. The proposed change clarifies that all surveillance tests, with the expection of the one performed once per 184 days, may be preceded by warmup procedures and may also include gradual loading as recommended by the manufacturer.

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hU1CHMENT C i EVAL,UATION OF SIGNIFICANT MAZARDS CONSIDERATIONS l

4 Commonwealth Edison has evaluated this proposed amendment and l determined that it involves no significant hazards considerations.

According to 10 CFR 50.92(c), a proposed amendment to an operating license involves no significant hazards considerttions if operation of the facility in accordance with the proposed amendment would not:

1) Involve a significant increase in the probability or consequences of an accident previously evaluated; or f

2) create the possibility of a new or different kind of accident from any accident previously evaluated; or

3) Involve a significant reduction in a margin of safety, q The proposed amendment provides a clarification to a note in '

Technical Specification 4.8.1.1.2 tegarding diesel engine starts. For the Byron and Braidwood Stations the proposed revision clarifies that all surveillance tests, with the exception of the one performed once per 184 days, may be preceded by warmup procedures and may also include gradual loading as recommended by the manufacturer. The proposed amendment also provides for the removal of some interim Technical Specification notes that ,

were needed only until two years after issuance of the operating license for Byron Station Unit 1.

The proposed amendment does not increase the probability or consequences of an accident previously svaluated. The proposed amendment is administrative in nature. Clarifying the note regarding diesel engine starts does not alter the type or intent of surveillances being performed to demonstrate diesel generator operability. The intent of Surveillance Requirement 4.8.1.1.2.a.5 is to load the diesel generator gradually for the monthly starts and only verify the diesel generator is loaded to 5500kw in less than or equal to 60 seconds for the 184 day starts. This note had been previously added to provide flexibility in the routine diesel generator start requirements so that mechanical stress and woar on the diescl generator could be minimized. This method or approa..) should result in enhanced reliability when the diesel generators are actually needed to respond to an accident. Also the deleting of Technical Specification notes that are no longer necessary for Byron Station does not impact any accident analysis results.

The proposed amendment doen not cr'eate the possibility of a new or different kind of accident from any previously evaluated because the revisions do not alter the surveillances or operability requirements for the diesel generators currently in the Technical Specifications. The changes are of an administrative type and do not affect any accident analysis.

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The note regarding diesel generator start requirements was previously added based on guidance from Generic Letter 84-15. The purpose of this note was to enhance the reliability of the diesel generators by not performing testing which would unnecessarily degrade the performance of the diesel generators. Therefore clarifying the wording of this note and removing notes that are no longer applicable, will not affect the margin of safety.

Therefore based upon the previous analysis. Commonwealth Edison f concludes the proposed amendment to the Technical Specifications does not involve significant hazards considerations.

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ML20058K352

Contents

Text

Subject:

Reference:

Enclosures:

Dear Mr. Kovach:

SUBJECT:

Enclosure:

Dear Mr. Kovach:

Subject:

Enclosures:

Enclosure:

Enclosure:

Dear Mr. Kovach:

SUBJECT:

Enclosures:

Dear Mr. Murley:

Enclosure:

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ML20058K352

Text

Subject:

Reference:

Enclosures:

Dear Mr. Kovach:

SUBJECT:

Enclosure:

Dear Mr. Kovach:

Subject:

Enclosures:

Enclosure:

Enclosure:

Dear Mr. Kovach:

SUBJECT:

Enclosures:

Dear Mr. Murley:

Enclosure:

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