ML20043B987
| ML20043B987 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 05/25/1990 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Hairston W GEORGIA POWER CO. |
| References | |
| NUDOCS 9006010147 | |
| Download: ML20043B987 (5) | |
Text
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1 UNITED STATES NUCLEAR REGULATORY COMMISSION 1
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'May 25, 1990 Docket No'.
50-424 I
s Mr. W. G. Haifston, III Senior Vice President -
Nuclear Operations'
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Georgia Power Company P.O. Box;1295 Birmingham, Alabama 35201
Dear Mr. Hairston:
SdBJECT: TEMPORARY WAIVER OF COMPLIANCE V0GTLE ELECTRIC GENERATING. PLANT, (VEGP) UNITS 1 AND 2
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By letter dated May 25, 1990, you requested an emergency Techriical/ Specification (TS) change to enable the high jacket water temperature trip on the-VEGP 3
emergency diesel generators (EDGs) to be bypassed in order to minimize the.
potential forfspurious EDG trips.in the: emergency: start mode.- The. request..
i results from your desire to install;a modification = to' add ' isolation valvesiin the instrument tubing between the EDG high jacket water temperature elements-E and the local EDG control panel that will manually bypass the high jacket water' temperature trip for all emergency sti.rt signals.
Currently TS 4.8.1.1.2h(6)(c)' requires that on a' loss of voltage on the-emergency bus in conjunction with= a xsafety injection actuation; signal that the non-essential L
EDGtripsbeverifiedasbypassedandthatthefoures'entialitrips:
engine s
overspeed,. low tube-oil pressure, high jacket waterJtemperature and generator differential, not be bypassed.. Your emergency' TS-request would> allow thel high jacket' water temperature trip te be bypassed"in addition to the other non-:
essential trips.
Your request includes yourianalysis and~ justification.as to r
why this proposed: change does,not involve a significant hazards-consideration.-
We have reviewed your request and the supporting analysis and find'them accept-able. Accordingly, this letter confirms the verbal granting on May 25 1990 of a temporary waiver of compliance from the requirement.of TS 4.8.1.1.2h(6)(c)
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6010147 900525
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ADOCK 03000424 p
PDC i
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Mr.-W.G. Hairston, III,
such that the high jacket water temperature trip may be bypassed as reflected on the attached proposed TS page. This temporary waiver of-compliance remains in effect until the NRC. staff can complete the processing of your.TS change request.
Sincerely, r
s.
0!
1 wt
/b Gus C. Lainas, Assistant Director for Region II Reactors Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosure:
As stated cc:
w/ enclosure
.c See next page
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Mr. W. G. Hairston, III k
Georgia Power Company Vogtle Electric Generating Plant-i CC'L Mr. 'J. A.- Bailey LMr. J. Leonard' Ledbetter,- Director.
' Manager - Licensing
- Environmental Protection Division Georgia Power Company Departnent of Natural Resources 1
P.O. Box 1295 205 Butler Street, S.E., Suite 1252-Birmingham, Alabama 35201 Atlanta,' Georgia: 30334 Mr.- G. ' Bockhold, Jr. : -
Attorney General
' General Manager,iVogtle Electric Law Department'
. Generating Plant 132 Judicial Building-O P.O. Box 1600
- Atlanta, Georgi.a 30334-Waynesboro, Georgia 30830 Mr.' Alan R.- Herdt' Regional' Administrator, Region-II Project Branch #3-
' U.S. Nuclear-Regulatory Comission U.S. Nuclear Regulatory Comission 101 Marietta Street, N.W., Suite 2900 101 Marietta Street,,NW, Suite 2900 Atlanta, Georgia 30323 Atlanta, Georgia 30323 Office of the County Comissioner.
' Mr. Dan 1 Smith Burke County Comission Program Director of Waynesboro, Georgia -30830
- Power Production' Oglethorpe Power Corporation >
Office of Planning and Budget
' 100-Crescent Centre Room 615B
- Tucker, Georgia 30085
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l 270 Washington Street, S.W.
1 Atlanta, Georgia 30334 Charles A. Patrizia; Esq..
Paul, Hastings, Janofsky.& Walker Mr. C. K. McCoy 12th. Floor Vice Presient'- Nuclear, Vogtle Project-1050 Connecticut-Avenue,.N.W.
Georgia Power Company Washington,'D.C. 20036 P.O. Box 1295 Birmingham, Alabama 352C1 g
l Resident Inspector I
- Nuclear Regulatory Comission P.O. Box 572 Waynesboro, Georgia :30830
. Mr. R. P. McDe ld Executive Vice Ptesident -
Nuclear Operations l
Georgia Power Company P. O. Box.1295 i
l Birmingham, Alabama 35201
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$UOVIILLANCE REQUlhEMEG 5
.1 auto start signal; the steady-state generator-voltage and frequ4ncy sha 1 be maintained within these: limits during this test; 6)-
Simulating a loss of-offsite power in conjunction with an ESF
{-
Actuation-test signal, and:
a)
Verifying deenergization-'of the emergency busses and load
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shedding from the emergency busses; b)
Verifying the diesel starts on the auto-start signal,,
energizes the esorgency busses with pomanently connected loads within 11.5 seconds,* snergizes the auto-connected.
(
essergency (accident) loads through the load ~ sequencer and.
operates for areater.than or equal to~5 minutes while its.
generatorisloadedwith.the~emergencyleads.;After energitation, the stea @-state'vo tage and frequency of<
the emergency busses shall be maintained at'4160 +170,'.
-410 volts and 60 + 1.2 Hz-d hing this testi:end:
c)
Verifying that all automatic diesel generator trips, except engine everspeed. low lube oil pressure. high jacket water-W#
temperatures *and. generator difforentiel, are automatically bypassed upon loss of. voltage on the emer with a Safety. Injection Actuation signal.gency bus concurrent 7)
Verifying the diesel generator operates for at:1e'ast 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
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During the first 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> of this test, the-diesel generator shall:
L be loaded to an indicated 7600 'to 7700 W,**:and during the:
i remaining 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> of this test..the diesel: generator sha111be.
l loaded to en indicated 6800-7000 W.**
The generator voltage.
and frequency.shall be 4160'+ 170, - 135 volts and-60 *'1.2 Hz within 11.4 seconds-after the start signal; the steady-state-generatorvoltageendfrequencysgallbe 4160 + 170,,~410 volts-and 60
- 1.2 Hz-during.this test.
Within~ 5 minutes after com-=
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pleting this 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test,- perfors Specification 4.4.~1.1.2h.6)b);g L
8)
Verifying that the auto-connected loads'to each dieiel generatordonotexceedthecontinuousratingof.7000kWi' 9)
Verifying.the diesel generator's capability to:
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- All engines starts for the purpose of surveillance testing as required.by l
Specif' cation 4.8.1.1.2 may be preceded by an engine prelube period as-recommended by the manufacturer to minimize mecher.ical stress and wear.on 1
the diesel engine.
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- This band is meant as guidance.to avoid-routine overloading of the engine.
Loads in excess of'this band-or momentary variations due to changing bus loads
.t shall not' invalidate the test.
7 Mailuretomaintainvoltageendfrequencyrequirementsduetogrid disturbances does not render a 24-hour test-as a fsilure.
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NIf Specification 4.8.1.1.2h.6)b) is not satisfactorily completed. it is not necessary to repeat the preceding '4-hour test.
Instead, the diesel generator may be operated at the load required by Surveillance Requirement.4.8.1.1.2.a5 kW for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> er until operating temperature has stabilized.-
1 V0GTLE-UNITS -.1 & 2 3/4 8 7 4
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Mr. W.G. Hairston, III' such that the high-jacket water temperature trip may be bypassed as-reflected i
on the attached proposed TS page. This temporary waiver of compliance remains in effect until the NRC staff can complete the processing of your TS change i
request.-
4 Sincerely, y/ /htW( h hN j
jpGusC.Lainas,AssistantDirector i
for Region IL Reactors i
Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation
Enclosure:
As stated cc: w/ enclosure See next page i
1 1
i DISTRIBUTION i
>; Docket: Files EJordan MNBB-3302 NRC'& LPDRs ACRS (10) P-315 PD23 Rdg File Catawba Plant File SVarga 14/E/4 AHerdt RII j
i Glainas 14/H/3 LReyes RII DMatthews AMendola 14/E/4 RIngraia Treed OGC 15/3/18 4
See next page h 3 cc:
DOC NAMEL TLE TEMP WAIVER j'
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!IeGlainas OS!)S/90 05 90 05/g/90 05/%/90
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