ML20078M602

Application for Amend to License NPF-57,revising TS Section 4.8.2.1, Electrical Power Sys, SRs & Associated Bases Section B3/4.8.2,min Acceptable Battery Terminal Voltage for 125 Volt Dc Sys

ML20078M602
Person / Time
Site:	Hope Creek
Issue date:	11/23/1994
From:	Labruna S Public Service Enterprise Group
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
Shared Package
ML20078M604	List: ML20078M602 ML20078M607
References
NLR-N94190, NUDOCS 9412020248
Download: ML20078M602 (7)

Text

e 6 Pubhc Semce Electnc and Gas Company Stanley LaBruna Pubhc Service Doctric and Gas Company P.O. Box 236, Hancocks Bridge, NJ 08038 609-339-1700 Vus P+esamt Nuctear Engaweg NOV 2 31994 NLR-N94190

Reference:

LCR 93-12 U.S. Nuclear Regulatory Commission Attention: Document Control Desk washington, DC 20555 Gentlemen:

REQUEST FOR AMENDMENT ELECTRICAL POWER SYSTEMS HOPE CREEK GENERATING STATION FACILITY OPERATING LICENSE NPF-57 DOCKET NO. 50-354 Public Service Electric and Gas Company (PSE&G) hereby transmits an application to amend Appendix A of Facility Operating License No. NPF 57 for the Hope Creek Generating Station (HCGS) in accordance with 10CFR50.90. Pursuant to the requirements of 10CFR50. 91 (b) (1) , PSE&G has provided a copy of this amendment request to the f2 ate of New Jersey. This request would revise Technical Specifications Section 4.8.2.1, ELECTRICAL POWER SYSTEMS, SURVEILLANCE REQUIREMENTS, and associated BASES Section B3/4.8.2.

A description of the requested changes, supporting information and analyses for the changes, and the basis for a no significant hazards consideration determination are provided in Attachment 1.

The Technical Specification pages affected by the proposed change are marked-up in Attachment 2.

Upon NRC approval of this proposed change, PSE&G requests that the amendment be made effective on the date of issuance, but implementable within 60 days to provide sufficier.: time for associated administrative activities.

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ADOCK 05000354 PDR 1 4\

NOV 2 31994 Document Control Desk NLR-N94190 Should you have any questjons regarding this request, we will be pleased to discuss them with you.

Sincerely, Y -

Attachments Affidavit C Mr. T. T. Martin, Administrator USNRC Region I Mr. D. Moran USNRC Licensing Project Manager Mr. R. Summers f*SNRC Senior Resident Inspector Mr. K. Tosch, Manager IV Bureau of Nuclear Engineering New Jersey Department of Environmental Protection l

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REF: NLR-N94190 STATE OF NEW JERSEY )

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COUNTY OF SALEM )

Stanley LaBruna, being duly sworn according to law deposes and says:

I am Vice President - Nuclear Engineering of Public Service Electric and Gas Company, and as such, I find the matters set forth in our letter, referenced above, concerning the Hope Creek Generating Station, are true to the best of my knowledge, information and belief.

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Subscribed and Sworn to before me this j[ day of7)gj7g.gf,( 1994 -

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'ljOtary Publid of flew Jersey KIMBERLY JO BROWN NOTARY PilBLIC Of NEW JERSEY My Comnnssino Espires April 21,1998 l

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• Ref: IIR 93-12 ATDOMENI' 1 F00KEFD 'ITX3NIGL SPECIFIGTIOG OWCE

f PHDFOSED 01ANGES TO TECINICAL SaunCATIOE FACUTIY OPERATDG IICHEE NPF-57 10PE GEEK GDERATTNG SIATICH DOGEr NO. 50-354 Ref: LCR 93-12 L NITO( OF 11E OlNCE As shown on the marked-up Technical Specifications pages in Attachment 2:

+ Change surveillance requirement 4.8.2.1.b frm ". . .with battery teminal voltage below 105 volts for a 125-volt battery..." to read,

"...with battery terminal voltage below 108 volts for a 125-volt battery..."

+ Remove (*) at end of 4.8.2.1.c.4 and correspondbg (*) footnote

+ Delete surveillance requirement 4.8.2.1.d.2 and reword the portion of surveillance requirement 4.8.2.1.d.1 that reads, "...the actual emergency loads for the design duty cycle..." to read, "...the actual  ;

or sinulated emergency loads for the design duty cycle ...". On page 3/4 8-14, ccanbine the resultant 4.8.2.1.d with requirements 4.8.2.1.e i and 4.8.2.1.f from the following page and bring Table 4.8.2.1-1 up to page 3/4 8-15, leaving page 3/4 8-16 intentionally blank.  :

+ Revise Table 4.8.2.1-1 as inlicated in the attached marked-up pages to ..!

agree more closely with Inproved EWR4 STS format, ACTIONS, and BASES.

The A.C. SOURCES, D.C. SOURCES and ONSITE 10WER DISTRIHJrION SYSTDE bases will be revised, as indicated in the attached mark-up, to reflect the above changes to the technical specifications.

II. REASCH KR 71E OIANGE During the Hope Creek Electrical Distribution System Functional Inspection (EESFI), a review of the Hope Creek DC systems voltage drop studies revealed

- that at the end of the 4-hour duty cycle for the Class-1E batteries, the }

, minimm specified voltages of 105 VEC and 210 VDC at the battery terminals for the 125 V and 250 V DC systems may not be adequate to support certain DC loads.

A new voltage drop study (E-1.4(Q), Rev. 3, " Hope Creek 125V & 250V Class 1E DC System Short Cirullt ard Voltage Drop Studies") was performed using more precise arrl conservative load current values. The results of this study show that the minimm acceptable battery terminal voltage for the 125 VDC system will need to be raised from the present level of 105VDC to 108VDC in order to sugert proper operation of the connected loads. For the 250VDC system, the present minimum battery terminal voltage of 210VDC was detemined to be adequate and does not have to be revised. Load profile values frm the latest battery sizing calculations, are located in the UFSAR atd in surveillance testing procedures; therefore, in accordance with the guidance of Generic Ictter 91-08, the load profile table is being removed frta the TS.

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I The (*) footnote at the bottcn of page 3/4 8-13 applicd to " prior to startup after the first refuelig outage", is no longer current aM, therefore, should be ruoved. 7ABIE 4.8.2.1-1 is redrawn to incorporate CATD3ORY C and the table notation section has been reordered for clarity and closer conformance with the improved DWR4 Standard Tbchnical Specifications (STS). 1 III. JUSTIFIGTICH FQ1 THE GANGE Battery sizing calculations E-4.1(Q)," Hope Creek Class 1E 125VDC Station ,

Battery ard Charger Sizing," and E-5.1(Q), " Hope Creek Class 1E 250VDC Station l Battery and Charger Sizirg," were revised to denenstrate that the existing ,

batteries are of sufficient capacity to meet the design load profile for a j design duty cycle of 4-hours at a required minimum voltage for the proper  ;

operation of the connected loads. The revision of the battery sizirq calculations did not charge the design base requirement to supply the designed  !

load for a duty cycle of 4-hours, however, battery capacity sizing parameter of erd cell voltage was changed to a more conservative value to account for  !

minimum load voltage requirements. Ioad profiles for the batteries were slightly modified to incorporate more precise, yet conservative, load current values. The batteries were evaluated using a 25% additional capacity margin for agim as required by TFFE-450. In addition the batteries have a design margin of 5 to 10% for load growth and/or less than optinum operating condition i of the battery. The load profiles are located in the UFSAR, in Calculations E-4.1(Q) and E-5.1(Q), and in station Surveillance Test Pro dures and can, therefore, be removed frun the TS per the guidance of IEC Generic Intter 91-08.

The (*) footnote to be deleted had a one-time applicability ard serves no purpose. The Table charges incorporate format ard values that are nore j consistent with the improved NR4 STS (i.e., when firding one or more cells of i a battery outside the CATEGORY A and B limits, requiring a pilot cell  !

verification within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> ard permittirq 31 days for restoration of battery cell paraneters to within the Category A and/or B limits). This change, as explained in the BASES, takes into consideration that, while the battery is l degradcd, sufficient capacity exists to perform the interded function, and j permits sufficient time to fully restore the cell parameters to normal limits, j IV. 10CIPSO.92 SITIFICANP HAZAIRE CmSIIERATICH ANALYSIS PSE&G has, pursuant to 10CFR50.92, reviewed the proposed amendment to determine l whether our request involves a significant hazards consideration. We have determined that:

1. The (peration of the Ikpe Cruck Generating Station (IKCS) in amnrdance with the pwposed change will rot involve a significant increase in the prr*nhility or omooquances of an amidmt previously evaluated.

The proposed charges restore conservatism to the battery voltage requirements by raising the minimum acceptable battery terminal voltage for the 125 VDC system in order to support proper operation of the connected loads. This change will cause no change in the probability of any accident and will, by providing increased support for connected loads, provide assuran the omsequences of previously evaluated accidents remain within limits.

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. Removal of the load profile table does not affect the surveillance test loading which is contained in station procedures. 'Ihe (*) footnote deletion is purely editorial ard has no safety bearing. Table charges agree with the format ard wordirq of the improved BWR4 Stardard Technical Specifications.

2. 'Ibe operation of the Ilcpe Crock Gmeratiry Staticn (IIOCS) in m -Quax with the supc=hed change will not create the pacsibility of a new or different kird of amurnt frun any previously evaluated.

'Ihe revision of the battery sizing calculations did not change the design base requirunent to supply the designed load for a duty cycle of 4-hours. 'Ibe proposed charge to the mininum acceptable battery terminal voltage for the 125 VDC systan ensures proper voltages at the battery loads. No other charges to the physical plant or to the manner in which it is operated are caused by the proposed amendment; therefore, there is no new or different kind of accident created by this change.

3. 'Ibe operation of the Ilope Creek Generatiry Staticn (IlOGS) in accordance with the supuccd change does not involve a significant reduction in a margin of safety.

'Ibe revision of the battery sizing calculations did not change the design base requirement to supply the designed load for a duty cycle of 4-hours; however, battery capacity sizing parameter of end cell voltage was charged to a more conservative value to account for mininum load voltage requirements. Ioad profiles for these batteries were slightly modified to inmrporate more precise yet cmservative load current values. 'Ibese batteries were evaluated using a 25% ackiitional capacity margin for aging as required by IEEE-450. In addition, tha batteries have a design margin of 5 to 10% for load growth and/or less than cptinun cperatirg condition of the battery; thereby, maintaining safety margins.

Ak11tionally, charges are comparable to the format and ACTIOtE of the inproved WR4 STS. Permitting 31 days to restore a battery to within CATEGORY A and/or B limits per the irproved NR4 STS does not involve a rtduction in any margin of safety since the battery, in Category C, remains operable, as discussed in the BASES.

Ctnclusico:

Based upon the foregoing evaluation, we have determined that this proposed change does not involve a Significant Hazards Consideration.