ML20055D018

Discusses Review of s Documenting Oral Request for Waiver of Compliance Re Emergency Diesel Generator Operability Tech Specs

ML20055D018
Person / Time
Site:	Clinton
Issue date:	06/26/1990
From:	Davis A NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Jamila Perry ILLINOIS POWER CO.
Shared Package
ML20055D019	List: ML20055D018
References
NUDOCS 9007030091
Download: ML20055D018 (3)

Text

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• UNITED STATES

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NUCLEAR REGULATORY COMMtsslON REGloN in

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1 IJUN 2 C 119o Docket tio.-50-461 lllinois Power Company ATTN: J. S. Perry Vice President Clinton Power Station Mail Code V-275 P. O. Box 678 Clinton, IL 61727 Gentlemen:

We have reviewed your letters (U-601696 and U-601698) dated June 22, 1990, documenting your oral request for a Waiver of Compliance regarding a requirement of ycur Te ' ical Specification that addresses emergency diesel generator (EDG) operabil.3y at the Clinton Power Station. Copies of your letters are enclosed.

Technicel Sp cification 3.8.1.1, Action b., stipulotes that with the IB EDG (Division 111 inopereble in operational conditions 1, 2, or 3 that the IB EDG must be restored to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. If the IB EDG cannot be restored to en operable stdtus within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> the plant must be in at least hot shutdown within the-next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, and in cold shutdown within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The IB EDG at the Clinton Power Station was removed from service at 2:45 a.m., (CDT) on June 22, 1990, after the discovery that a leak existed inside of one of the heat exchangers that cools the EDG.

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The leak was suspected to have been caused by microbiologically induced corrosion (MIC) which had previously been found to be causing degradation of heat exchangers at Clinton. You requested an additional 96 hour0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br />s-before the unit would be required to commence shutdown to prevent an unnecessary transient on the plant, should you be able to repair the IB EDG and prove it operable within that time period. This period expires at 2:43~a.m., on-June 29, 1990.- If the problem with the IB EDG is not corrected and the EDG does not successfully pass its operational surveillance test by that time, action will be immediately taken to commence shutdown of the unit so as to alace it in hot shutdown by 2:43 p.m., of June 29, 1990, and cold shutdown

>y 2:43 p.m., on June 30, 1990.

I understand that during the period of time that this Waiver of Compliance is.

in- effect, Clinton Power Station will take the following compensatory actions

.to ensure th6t the unit is maintained in a safe and stable condition:

a. fio testing that might cause a plant tronsient, other than normal required Technical Specification surveillance testing, will be performed, i OO bob): b ,

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t Illinois Power Company 2 M N 2 0 1990

b. No systems or equipment important to safety which are associated with Division I will be removed from service for electrical maintenance,

c. If the test results for the reserve auxiliary transformer (RAT) oil samples (expected by June 25, 1990) are unsatisfactory, actions will be immediately taken to shut down the unit.

I agree that your request for a temporar Waiver of Compliance meets the elicibility criteria in 10 CFR SI.22(c)(y). 9 I also agree pursuant to 10 CFR 51.22(b), no environmental impact statement need be prepared.

Af ter consultation with Mr. E. G. Greenman, I granted the requested relief on June 22, 1990, based on the minimal increase in risk associated with keeping the unit in operation for an additional 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> and thus avoiding a unnecessary transient in the plent. This approval is contingent on the compensatory measures described abuve.

Sincerely ,

> ui k .L%$ b A. Bert Davis '

Regional Administrator

Enclosures:

As stated

-See Attached Distribution:

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1111nois Power Compeny 2 AN 2 61990

b. No systems or equipment important to safety which are associated with Division I will be removed from service for electrical maintenance,

c. If the test results for the reserve auxiliary transformer (RAT) oil samples (expected by June 25,1990) are unsatisfactory, actions will be immediately taken to shut down the unit.

I agree that your request for a temporar Waiver of Compliance meets the eligibility criteria in 10 CFR 51.22(c)(y). 9 I also agree pursuant to 10 CFR 51.22(b), no environmental impact statement need be prepared.

After consultation with Mr. E. G. Greenman, I granted the requested relief on June 22, 1990, besed on the minimal increase in risk associated with keepir.g the unit in operation for an additional 96 hours0.00111 days <br />0.0267 hours <br />1.587302e-4 weeks <br />3.6528e-5 months <br /> and thus avoiding a unnecessary transient in the plent. This approval is contingent on the l compensatory measures described ebuve.

Sincerely,

,o hTM A A. Bert Davis  !

Regional Administrator

Enclosures:

As stated j See Attached Distribution:  ;

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Illinois Power Company 3 JUN 2 61990 Distribution:

cc w/ enclosure.

J. Cook; Manager, Clinton Power Station F. Spangenberg,-111, Maneger -

Licensing end Safety

-DCD/DCB,(RIDS)

Licensing. Fee Management Branch Resident inspector, Rill J. Hickman, NRR, PM J. McCof f rey, Chief, Public utilities Division H. Taylor, Quality Assurance Division, Sargent & Lundy Engineers Petricia 0'Brien, Governor's Office of Consumer Services S.-Zabel, Esquire, Schiff, Hardin,

& Weite L. Larson, Project Manager, General Electric. Company Chairman, DeWitt County Board Illinois Department of Nuclear Safety Robert Newmann, Office of Public Counsel, State of Illinois Center Perry SRI T. E.' Murley, NRR J. M. Taylor, EDO i

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' cLINTON AMsR sTA'nON. P.o. Dok ett, CWNToN H,LlWoD 017874078. TE1,3 PHONE ($17) 0664441 _

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i June 22, 1990 .

4 10CFR50.91(a) (5).

10CFR50.91 l

Docket No. 5'0-461 ,

, Nr. A. 3.-Davis _

l Regional-Administrator .

Region III U.S. Nuclear Regulatory-Commission [

1 799 Roosevelt Road '

Gian Ellyn, Illinois 40137 SUh7ECT! Followup to Request for Weiver of Compliance Regarding Teshnical, specification Limiting Condition for operation Related to Standby Emergency Diesel Generator 1B .

Dear Mr. Davis:

On June- 22, 1990, IP discussed with Nessrs. E.

l L Greenaan and R. Knopp of your staff the request-for a L waiver of compliance submitted via IP Letter U-601696 dated June 22, 1990. During this conversation and based on the information provided in Attachment 1 to this letter, Mr. Greenaan approved a waiver of compliance regarding the out-of-service time allowed for diesel generator (DG) it under the Technical specification Limiting condition for Operation (LCo). Under the granted waiver, the allowed-out-of-service time for DG15 ,

must not exceed seven days from'the time that DG1B was removed from service (entry into the LCo Action Statement). The waiver of compliance will therefore

. expire on or before 0243 on Frlday, June- 29, 1990, unless otherwise approved by the NRC.

It should be noted that Attachment 1 to this letter is a revision to Attachment 1 of the original request for waiver dated June 22, 1990 (U=601696) as it contains additional information. This letter and its attachments  !

have been reviewed and approved by the CPS Facility Review Group.

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' IP appreciated your consideration and prompt response to this request..

' sincerely, fbQ l J. 8. Pe m Vice President TRE/rqpt Attachments ,

cci NRC Clinton Lise'nsing Project Manager -

NRC Resident Office I

L Illinois Department of Nuclear safety

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- - namerinalen af eendiaian/ mannan far Rasuant During normal shift rounds at approximately 0200 on June 22, 1990, an operater discovered (via the site glass) that the water level in the jacket oceling water .

o expansion tank on DG13 was overflowing. From earlier P

experi~ence, IP suspected that this-may be caused by service water leaking through-the diesel generator heat i

exchanger tubes and into the DG jacket cooling water within the associated heat exchangers. (A heat exchanger

- is provided for each of the two tendom engines (one 16-c/linder and one it-eylinder) associated with DG15.)

Although the condition described above would not prevent the DG from performing its safety function (since the '

diesel can function with direct service water flow into '

the cooling jacket), DG1B was removed from service et l

0243 hours0.00281 days <br />0.0675 hours <br />4.017857e-4 weeks <br />9.24615e-5 months <br /> for investigation and repair. '

! Microbiological 1y induced corrosion (MIc) was first identified in the DG heat exchangers at CP8 in 1989 as IP was developing and implementing its response to Generic ,

i Letter 89-13 and the associated suplement.* As an immediate corrective action, cleaning and closed loop chemical treatment of the De heat exchangers were l performed during planned outage 3 (70-3) IP (February, 1990) is currently to.tamporarily arrest the MIC problem.

working towards a long-term solution to the MIC problam, including:ebtaining an Illinois State discharge permit for ehemically treating service water on en open-loop (Retubing of basis and retubing the DG heat exchangers.

• the heat exchanger for DG1A was completed during Po-3.)

irements (during operational f Theoerabilityre!3).fortheemergencystandbydiesel condi ions 1,2, an L generators, including the actions to be taken it one (or more) is inoperable, are specified in CPS Technical-Specification 3.8.1.1. (see Attachment 2 of this )

submittal.) Action "bH ggquiggg ghgg gigh g{thgg diggel I generator LA or 1B inoperable, oper. ability of the required Ac offsite sources must be demonstrated, operability of the remaining operable diesel generators must be demonstrated (unless the DG became inoperable solely due to preplanned preventive maintenance or testing), and the inoperable DG aust be restored to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. If the inoperable DG cannot be restored within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, the plant must be brought to a hot shutdown condition within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and to a cold shutdown condition within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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• Reference IP Letter U-601574; dated January 29, 1990 i

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. to U-401698 .

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pago a of'8 By 1300 (on June 33, 1990), Ip completed a visual inspection of the tubes within the heat exchangerBased on the  !

associated with the it-eylinder engine, j visual inepmotion performed and previous experience with l NIC in the Division I diesel generator heat exchanger, )

tube replacement is required for both heat exchangers (i.e., the heat' exchanger associated with the 12-cylinder  ;

engine and the heat exchanger associated with the 16-This work will not-be able to be  ;

oylinder engine). completed Itbeforeis surrently the 72= estimated hour time limit thatexpires at 0243 1 on Mondey, June 24, 1990, an additional 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> will be needed to semplete the ,

retubing and to complete the testing required to reverify l operability of DGit. Regardless, IP does not expect and I will not permit the time required for retubing and testing to exceed a total of seven days from the time DG1B was removed from service.

Desa91stien/Saminnem of work to be Performed The work plan for retubing both heat exchangers is such that both heat exchangers for DG1B will be repaired in Because of the size limitation of the DGiB parallel. room, the 16-cylinder engine heat exchangerlinder must be removed from the skid for retubing. in pla.co.) The 16-engine heat exchanger will be ret.ubed(The 12-cy

ylinder engine heat exchanger work will thus take almost another day more than the.repai't After .'tetubing work and for the la-cylinder reinstallation engine heat exchanger.

of the 16-cylinder engine heat exchanger, pressure testing and service water flow balancing will be required, followed by performance of a post-maintenance surveillance test. Ip currently estimates that all of the above will take, approximately, an additional 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> beyond the allowed out-of service normally-required by-the' plant Technical specifications.

Justifiention for Drensand annuant The Illinois power electrieel system The design waiver of provides a compliance diversity of power supplies.

for the clinton power Station Technical specification (CPS-TS) Limiting Condition for operation (LCC) to extend the 72-hour allowed out-of-service time approximately 72 additional hours is justified partially on this diversity. The 128-XV offsite p wer system provides power to the station by one thrt,e= terminal transmission line. This line connects the s'sation to the Illinois Power company grid at the south Bloomington and Clinton

- Route 54 substations.

Electrical power een be fed to the station through the line from south Bloomington or north or both. The Decatur (via Clinton Route 54 .lubstation) line terminates directly (through a circuit switcher) at the Emergancy Reserve Auxiliary Transformer, which transforms the electrical power to 4160-volt auxiliary

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• power bus voltage. The 348-kV Offsite Power System provides power to the station through three separate transmission These lines connect the station to lines.Company

- the Illinois Power grid at the Brokew, Rising, and Latham substations. All three lines terminate at the station switchyard ring bus which feeds the Reserve Auxiliary Transformer, which in-turn transforms the electrical power to the 6900-volt and 4160-volt auxiliary power bus voltage. Only one 138-kV and one 345-kV feeders are required by CPS Technical specifications.

In the unlikely event that the power sources described there are two remaining onarahla above are unavailable,ite.

diesel generators on s Diesel Generator 1A (DGIA) supplies power to Division I electrical equipment and DG1C supplies power to Division III electriual equipment.

These operable diesel generator units are espable of sequentially starting and supplying the power Because of requiremente for safe shutdown of the plant.

the diversity of the power supplies described above, the increase in the allowable out of service time for DG18 is justified.

With respect to the current status of other systems at CPS important to safety, the following are currently but temporarily out of service. #LCo#e were entered for these systems strictly due to routine maintenance and not because of any discovered / determined condition of inoperability.' .

Syntam status 6/dammanta Standby Gas Treatment This LCC is expected to (1) clear during the current Subsysten B swing shift. Standby Gas Treatment subsystem A is operable.

(2) Wain Steamline Isolation This LCo is currently being Valve Leakage Control cleared. M8IVaLCS Systaa (N8IV-LCS)- Subsystem A is operable.

Subsyntam B Reactor Core Isolation This LCO is expected to (3) clear during the upcoming cooling (RCIC) system '

midnight shift. The MPCS system is operable.

Imminent restoration e' the above systems / subsystems and the operability of redundant systems provides added assurance that the proposed request is justified.

• As of 1800, June 22, 1990.

'803 4 of 8 1 There are two other plent/ equipment conditions of concern l

surrounding this event. IP is currently monitoring the ,

degradation of the inner aschanical seal on reactor reoirculation pump p as pressure across the inner seal has been observed to be increasing.

in good condition.) This conditionnot is(The outerto seal considered is be a sendition that warrants special consideration regarding the espability to shut down the plant and mitigate the consequences of an tecident. The most likely shallenge to the seal would be when shifting the reactor reciroubtion pump from slow to fast speed during a plant restart. _.

The second concern is the results of oil testing recently i

performed en the reserve auxiliary transformer (RAT) which provides power from the Cps switchyard to the Auxiliary power (Ap) System. The transformer is currently in servios and is one of two sources of power The tothesafat(-relatedportionoftheAPsystem.s transformer rated to carry more than four ti f total demand of the safety-related portion of the AP system.

Illinois power monitors the condition of transformer oil in the RAT by taking periodic oil semples and sending them to an independent laboratory for analysis. The results of oil samples taken in aid June of 1990 are ptovided.below. Two of the parameters were identified as being outside their recommended normal-ranges.

R&ngs .641A* A/.21* U.21**

Water content 15-34 ppm 31 ppm de ppm Dielectric Strength 24-31 kV 30 kV 14 kV 45 kV ,

The samples wore taken during extremely wet humid weather and are so divergent that they are questionable. All other parameters are normal and within their respective limits. In particular, the combustible gases are within their normal limits. (combustible gases are indicative of imminent failure and/or catastrophie damage due to internal arcing.)

The RAT has experienced no failures since IP received its I

ope.ating license in September 1986. The only outage of

! the off site power-from the 345 kV switchyard occurred in late itse due to a failure of a 345 kV switch. This outaite was of short duration (24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />). .

• 0ffsite laboraton test results

• • 0nsite test results ,

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.. P0gO 5 of 9 IP believes requires the test closer resultsbut attention, indicate that it is not the R&T and inoperable is still espable of performing its intended function.

Nowever, IP has sent samples to two different

[ laboratories so thatTest the results recent are testexpected results can nextbeMonday further evaluated.

(June 88,1990) . If the test results for the RAT oil samples are unsatisfacton , IP will take appropriate action to shut down the plant.

Regarding the need for maintaining the plant on line, CPS is presently generating approximaf,ely 6b percent of the total electrical IP oustomer lead.

The current status of other 213.inois Power Generating Stations is as.follows: ,

Egnacted L

Re: urn-to-Service

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gggggg Data ggig Baldwin 1 (540 MW) off-line 6/25/90 Baldwin 3 (540 NW) off-line 7/23/90 Havana 6.(410 MW) off-line 6/25/90 ,

and all of It is estimated that if CPS must be shut down,ll need to the available IP units are in operation, IP wi purchase at least 500 megawatts of m er.and must interrupt service to the interruptible customers on Monday -(June 25) . If Baldwin 1 and Havana 6 are not available, then IP will need to purchase at least 1200 megawatts (and discontinue service to the interruptible customers). Peaking Units (Gas Turbines) are not

' included in this forecast.

Additional Mitisatins conditisna in 2P contacted the National Weather Service (NW8)

Springfield, Illinois to consider the current and

- axpected weather conditions for the immediate service area. The NWS reported.that The NWS olear weather is forecast indicated that there is only a for the vaskend.

i slight chance of thur.04rstorms on Monday (June 25) and that the next possibility of thunderstorms is on Wednesday or Thursday (June 27 or 28) .

demeanantarv Actiona m

The remaining operable diesel generators are ready to perform their intended In function addition,in the no unlikely event testing will be that they are needed.

performed that might create a transient to normal plant conditions (other than the normal surveillance testing

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- required to satisfy Technical specification requirements) ,

during the extended time interval. Also, no systems or equipment important to safety which are associated with the redundant safety-related division (Div. I) will be removed from servios for electric maintenance during the extended time interval.

.safatv eieniffamnaa/ammia for Ma sianfficant Nazarda ,

eansideratian IP does not consider this request to be safety significant in view of the followingt . .

1) As noted previously, only the Division II DG is currently inoperable. As offsite power is also available, sufficient redundancy exists (assuming no concurrent failures) to provide emergency power to -

systems designed to mitigate the consequences of an aooident.

2) Generally, operation _under the provisions of an I action statement is permitted for limited periods of time as it is recognised that single-failure criteria may not be met during such operation. IP

- believes that operation with only DG1h out of service for a period of time longer than normally, allowed but within the noted limit constitutes no significant increase in risk regarding the safe operation of the facility..

3) In addition, IP does not believe that the present situation should require subjecting the plant to an unnecessary shutdown. Although there is a certain risk associated with the increased allowed out-of-service time, most challenges to plant systems occur during startup and shutdown events. Eliminating the '

risk associated with these events by preventing an unnecessary plant shutdown due to the current action time limit is viewed to have a positive effect on plant safety.

4) With respect to executing a safe shutdown of the

-plant if required, the plant design is such-that safe shutdown to a cold condition can be achieved with DGiB inoperable, particularly in view of the operability of all' redundant power sources and the operable status of systema important to safety.

1 According to 10CFR50.92, a proposed change to the license (Technical specifications) involves no significant hasards consideration if operation of the facility in accordance with the proposed change would not: (1) involve a significant increase in the probability or conseguences of an accident previously evaluated, or (2) create the possibility of a new or different kind of

' Attachmont 1

'l' to U-601694

• Page 8 of a The third option ie'to replace the heat exchanger tubes. ,

This can restore either or both heat exchangers to a like-new condition as IP pursues its long-tera solution-to the MIC problem. IP feels that this is the appropriate course of action. The proposed request would support oosplete replacement of the tubes in hate heat.

exchangere (for the it-eylinder and 16-cylinder engines),

thus precluding the possibility of having to again remove

- the De from service in order to plug more tubes, reassessing the impact of further plugging, Plant and and grid potentially reeddressing the MIC probles.

condit, ions are such that new is an appropriate time to

. request _a waiver of ocapliance in order to implement a complete and thorough (short-tera) fix to the MIc problem for 001B.

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A'ttachment 2 '

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" . ' , 3/4.8 flECTRICAL.POWEA$YSTEMS ee U-601698 '

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3/4.8,1 AC $00RCEI . .

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" AC 500R0t$ = OPERATING LIMITING CONDI" ION FOR OPERATION As a sinisua, the following AC electrical power sources shell be -

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a. sicaland indsendentci ,

Two netwo pgr ge ensgto. distributionsystas..and Class guits between the offsite transmission

b. Three separata and independent dieset generators', each with:

1. A separats day fuel tank containine a, minimum of 345 gallons of fuel for diesel generators 1A and 18 and 240 gallons of fuel for diesel generator 1C. , .

2. A separate fuel storasp system containing a intaus of 48 000 gal-lens of fue' for diese, generator 1A and 45 fesel generator 10. l generator ill and 19,500 gallons of fuel for, 00 gallons for dies

3. - A separete fuel transfer pump. ,

Appl 1CABiltTY: OPERAf!OHAl CONDITIONS 1, 2, and 3.

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ACTION:

ired A0 electrica' power

a. With one offsite circuit of the above r  !!.!TY of the rosadning AC desenstrate the OPE

.sources sources by inoperable perfors {ng Surveillance Requ resent 4 4.1.1.1.a within one hour thd at Issst once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafttr. If eithat' dittel ganaratar demona 1A or 18 has not been successfu119 tasted within the past 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />,1.1.2.a.4 strate its CPLAABILITY by performing surveillance Requirements 4.8.

separately,within and'4.8.1.1.2.a.5 for each cuch diesel generator [I status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> 24 hours. Restore the offsnte circuit to OPERAB or be in at least HOT SHUT 00WH within the next.12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLO l SHUf00WW'within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. ,

b. With either diesel gener4 tor 1A or 18 inoperable, demonstrate the OPERABIL-l ITY of the above required AC offsite sources by performing surveillance i Requirement 4.8.1.1.1.a within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> and at'least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter. If the diesel generator became inoperable due to any cause other t an preplanned prevective maintenance or testing, demonstrete the OPERA 81 ITY of the remaining QPERABLE diesel cenerators separately,by perform ng Surveillance Requirements 4.8.1.1.2.a.4 and d.8.1.1.2.a.5 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />". Restore the inoperable diesel generator to OPERA 8tE

• This test is required to be conoleted regardless of when h,he inoperable diesel -

generator is restored to OPERAB.4 status. The provisions of $pecification 3.0.2 are not appitcable, ,

CLINTON - UNIT 1 3/481 Amendment No.13 e

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L 3.s.L1 ActiDN fiantinuesi autve heure endviein is COL 878 8W790W hewn witMner the sefs11in swing et ieus34 hours3.935185e-4 days <br />0.00944 hours <br />5.621693e-5 weeks <br />1.2937e-5 months <br />. =r *ewn0W *"- -

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s, , With one offsite ettsutt of the neeve=reevired At eseurtes sauress and diesel '

- senerster 1A er la of De 46 eve reevired At electe1441 AC seceses by-

- dennastrate the CPCAAR1M TV of.the remaint hour and at least

' Insparete,8vevet114nes Requirement 4.8.LLLa witMA

• l perferningease per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter. If.a diesel generster hasase isoperstle fMe any asuse suer uan pMalanned preventive maintenane's of testing seson=

strate tAe OptRAt!LffY of the remataing 0PERA8LE dieset sentratars,4 8 LLLa.4 and

• 4.parately, se s.LLLa.I witMa by performing 8 hoves*.Surye(11anseAastare at least Reevirtaansa one of De .insterials . AC secreas to CP8RA8LE status witMn the nant u nevre and in COW SWTDOW winin the fetiertAg to hours. within 12. Deves en he in. At least NOT Restem at least two offsite circuite and disset utneretare 1A ans 18 to CPERA8Lt status wisMn 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> fees time of fait' al less er te in et1*ast Hot .-

W folieving to hours.

$WTDOW j within ne next '

d.

With diesel generater 1C of the a6 eve requiMd AC elettrical power sovrees i inoperable, sesenstrate the OPERA 82WTY.ef the offsite AC secrees by pet

• forming svevet11ance Reevirement 4.8.LLLa vieta 1 hear and at lea ence per a heyrs tAereafter.a result of ag cause euer than preplanned preven '

.tssting, desenstrate the OPERAAIUTY of us remaining OptRASLE diesel ganar*

start, separately, ty.perfefsing 8vevet11ancs Aequirements 4.8.LL2.a.4 I

and 4.4.LLI.a.5 within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />". Rastem diasal generatar 1C to CPERA8LE stalvs witMn 71.hevn er u. declare the HPC1 bstes

. . ute . 4ct a ceund y ..eiftati.o a.8.1 ud e.

With diesel generator 1A er 18 of 2e deve retviced AC electrical power sources inoperatie, in sedition to taking ACT10M 4 er s, sunsyttaas, trafasu applicable, verify'within I hevn uat all nevired systans,ing CPtRASd diesel aesponents and devises that depend on the rossin Auervise, be fenerater a at least Hof asP.UT90W a seurtswiuin of emergency the nast it heves power and in 4M Cc alse OPERA 8LE wipin the fetteving 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

f. Vltti teth of' us ansva required offsite circulta inoperabfe,.desenstrate the OPERA 8!L!TY of three diesel geNreters, se$arsuly, ny perferming ,

Surve(11aue Requirements 4.8.L1.2.a,4 and 4.4.LL2.4.8 Restarewithin at itset 8 heves one unless us aissel generaters are alressy aparating. . .

l "This tes is resvired to be essoleted regardless of when the incoeraale eissel generasce is esstarts to CPtAABILITY. The previsions of Spectf.iastion 3.A .

ers not asplisaste. .

3/4 8 2 L CLINTON - UNIT 1 W

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• to U 601698 4 .

Poea 3 et 3 tLECTRICAL POWER SYSTEMS AC 500RCIS - OPERATING

, LIMITING CCHDITION POR OPERATION (Centinued) 3.8.1.1' ACTION (Continued): ,

of the above* required offsite cirevits to CPERABLE status within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or be in at least HOT SHUTDOWN within the next u hours. With only one offsite circuit restored to CPERA8LE status, restore at least two offsite '

' aircuits to CPERABLE status within ?! hours free time of initial '1ess or '

be in at least NOT SWT00WN within the next M hours and in COLD $ NUT 00WN within the followint 84 hours9.722222e-4 days <br />0.0233 hours <br />1.388889e-4 weeks <br />3.1962e-5 months <br />. A suceessful teet(s) of diesel generator CPERASILITY per Siirveillance Requirements 4.8.1.1.2.a.4 and 4.6.1.1.2.a.5.. .

performed under this ACTION statement for the OPtRABLE diesel eenerators, estisfies the diesel genereter test requirements of ACT!0H staf,ement,s.

g. With diesel generaters 1A and'1B of the above-required AC electrical power sources inoperable demonstrate the oftRASILITY ef the remaining AC sources by performInt Surveillance Requirement 4.8.1.1.1.s with' n I hour and at least once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> thereafter and Surveillance Require-ments 4.8.1.1.2.a.4 and 4.8.1.1.8 a 5 for diesel generator 1C within '

8 houes.* Restare at least one of the inoperable diasal generators 1A and 18 to OPERABLE status within 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> or be in at least NOT 8NUTDOWN within the nept 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SHUTDOWN within the 'following 84 hours9.722222e-4 days <br />0.0233 hours <br />1.388889e-4 weeks <br />3.1962e-5 months <br />.

Resters both diesel generators 1A and 18 to OPERABLE status within it'heurs from time of initial lees er be in at least HOT 8HUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in COLD SWTDOWN Within the following 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.

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

ACT!cN statements a and d specified above. ,

1. With either diesel generator LA or 18 inoperable and diesel generator 1C inoperable, apply the requirements of ACTION statements b, d and a specified above.

"This test is required to be completed regardless of when the inoperable diessi .

generater is restored to OPERABILITY. The previsions of Specifteation 3.0.2 .

are not applicable.

CLINTON - UNIT 1 3/4 6-3 ,

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Il&isets Power Seegany +

c1&aten power Statiza meste 84 - a Miles East Post office Des 478 cliates, Illissie s1737 l renee es ,.ine to. '/I]T.bflAhGl01)40L '

ritme U k b f1Arl0$L W telese,y machine me.: M/-N#7"dM) d4[OJ _

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. 1ees,1 a. ##mf/ mod Date seatt /b/Aff/6)0 Number of pagess / -

+ envar Operators. IlAlld . _ __

talaeany Mashiman Panafan MI=3000 Automaties (tif) 938-8294 Verificaties Numbert (317) 935=8881, estension 3597 E-ww @e y

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.. . . _ . . . .