ML20092F643
| ML20092F643 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 07/31/1989 |
| From: | Gregory Stone GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20092F288 | List:
|
| References | |
| CON-IIT05-002-133D-90, CON-IIT05-193-000I-90, CON-IIT5-193-I-90, CON-IIT5-2-133D-90, RTR-NUREG-1410 NL-IU-11205-008, NL-IU-11205-8, NUDOCS 9202190450 | |
| Download: ML20092F643 (14) | |
Text
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eC - '30 D L
USERS COPY GDJFGIA IOWER I
IDER GDERATICH IEPATUMElff V
VCXTTIE EL5JCIRIC GENERATDG PLM(f D61TUCTIONAL LUIT TITII:
RESKND TO DERGDJCY DIESEL NCEBER: NI/-IU-11205-008-01-C GENEIRTOR GENEPATOR AIAFMS PRCGRAM:
CUTSIDE AREA OPERNIOR REVISICH:
1 AUINOR:
G. D. STCtE DNTE:
7/31/89
/
bh Il p
REn m a s, E TIE FROCEDURE 17035-1, MDMCA70R RESPONSE PPOCEDURES (REV 4)
M>4ST R COPY
- rangr S
,s NIrIU-11205-008-01-C; Respord to Diesal Generator " Generator" Alams PEMUMANCE ORTELTIVE Given that a generator alam on the engine control panel has annurciated, respand to the diesel generator GDERATOR alam.
'Ihe alam mst be ackn:vledged.
'Ibe candition causing the alam nust be iswestigated and, if possible, corrective actions taken.
Whem possible, the diesel generator mst ce returned to nomal operatirg conditions.
All corrunication ard activities n2st be perfonned in accordance with current, appronxi procedures.
INIOR%Ugti
'Ihe alams asucciated with the generator portion of the diesel generator are located on AIE35 (AU138) ard are as follows:
D31A (B) GENEPATOR TROUBIZ WINDCW El DGIA (B) IIH VOIIDGE WINDCW E2 EG1A (B) HIGH TEMP GDi OTI'L FNL WINIEW E3 DG1A.(B) IIM EXCI'IATICH WDIECW E4 D3IA (B) 'IRIP GENERA'IOR FAULT WINDOW EG D31A (B) 'IRIP GEN DIFF WINDOW E7 DGIA (B) HIGH TEMP GD1 PEARINGS WDIIDW E8 DG1A (B) GDIERAICR UNDER FREQUDiCY WINDOW D6 MIE:
DGIA (B) DISABEED GEN OfI'L ECWER FAIIURE, AND DG2A (B) DISAmRn NCH-FESET OF D4EPGDiCY 'IRIP are covered in another instructional unit.
E01 D31A GENEPATOR 7500BIE ACKNORrprce 'IME AINN Acknowledtje the alam condition by depiry the ACROWIEDGE button on the diesel generator panel.
'1he DGIA GDIERATOR 'IEUBIE alam is located in window E01 al the annunciator panel.
RNESTIGA'IE THE AIMM
'Ibe control roam operator will dispatd) the OAO to detAmine the trouble with the diesel generator. The generator trouble alam respc -as to sor.n of the same diesel generator relays that the DG trip generator fault alam responds to, but the generator trouble alam does ret mwily mean a trip of the diesel generator has occurred.
7 At the generator control panel, check the three lockout relay handles (186A, B and C) ard report to the control roam iwaiiately if any one is in the tri@Ed position, or if the red light abOVG any of the 186 lockouts iS 8-1 l
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NL-IU-11205-008-01-C; Erspcel to Diesel Generator " Generator" Alarms
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not lit. Check each of the diesel genelator relays for targets.
Targets
(
am orange /ru$ irdicators and are visible if the relay picks up. Report findings to the-ccutrol recru.
The relays which can cause the alam are auxiliary (X) relays actuated by the follcwing primry relays:
132 Reverse Ruer Relay 140 Lces of Excitation (field) 146 Negative Fhase Sequence Relay 151V/A Voltage Mstrained Overnirrent (OC) Relay 151V/B Voltage Restrainsi Overuirrent (OC) Relay 151V/C Voltage Restrained Overuirrent (OC) Relay 151N Neutral Ground Overcurrent Relay 169 Generator Bus Overvoltage Relay (alam only) 160 Potential Transformers (PT) Failure Relay (alarm only) 164 Generator Field GInind Relay (alarm only) 181 Underfrequency 127 Undervoltage on the primary " relay for the above functions, a carget will appear showing that thec relay has " picked up" when it detected the condition. The diesel generator and its relays do not respond in the same manner for all relays.
The raiponse of each depenis an the conditicos urdar which the diesel generator was started, i.e., emelm start or normal start situation.
This can affect whether the diesel gererator continues to run or not.
The three lockcut relays on the generator ccritrol panel each have a TRIP and a RESEr pcsition.
1.
186A lockout relay will trip when a diesel generator differential relay picks up.
This is further explained in the discussion of the TRIP GEN DIFF alarm.
2.
186B lockout relay will trip when the 140-loss of excitatimi relay picks up; 151V/A, B, or C-voltage restrained overturzent (OC)
I relays for each tase relay picks up; 151N picks up en an avarcurrent at the neutral lead of the generator; 160 indicates a failure of a potential transfmnar (PI).
3.
186C lockcut relay will trip while the engine is runniry an a 132 reverse power, or 146 rugative phase sequence.
TAl<E unemrdE ACITCN Make note of primary relays and lockout relays having targets showirg.
Report findings to the control rocn operator.
Reset the relays when directed by the control rocxn operator.
'Ihe control roam cperator may be aware of what caused the relays to pick up.
1.
Pass relay target reset pushtutton on the generator control panel.
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NIrIU-11205-006-01<; Respctd to Diesel Generator " Generator
- Alares iCIT: Never reset a relay taltjet or lockout relay until direc.tal to cb so. Shift Supervisor (or higher) approval is requirw1.
2.
To reset the orange target irdicator on the primary relay, press up on the push rui on the front of the prinary Inlay panel. The push rod is usually located on the lower left side.
3.
Wirn the hanile on the lockout relay to the RESET p:siticn ard quickly release it. The red roonitor light illuminates. Quick.ly release the hardle. Never hold the handle in the reset positica. Comunicate with the ccntrol rtxan cperator M111e you are resetting the TRIP-RESTP handle cn the lockout relay. If it trips again, nwrt the re-trip and await further instructicms.
4.
RESEr the annurciator alarm.
ID3 THE ACTIVITY The activity nust be lotyJed in the diesel generator log bocGc. This nust be cbne after the cause of the alaru is determincd ard actico is taken to correct the cxmdition causing the alarm.
E02 DGIA ICW NOIJEAGE ACMU4IEEEE THE AIAIN Acknow) edge the alarm condition by deptussirq the ACROWLEDGE button on the diesel generator panel.
The DGIA ICW WITAGE alarm is located in window E02 on the annurciator panel.
DNESTIGATE THE AIAIN i
The va d.wl recen operator will direct the CAO to check local inshtion at the generator control panel and determine the cause.
Nrve the readirq on the field V meter on the generator control panal, which has a scale of 0-150 DC ard a field ameter of 0-500 aaps.
- Also, i
locally check bus voltage using a bus V meter and selecting phase A-B, B<,
ard C-A voltages, asport the voltages to the centrol rocan operator.
The readirgs should agree in both places.
Remain in ecostant ccanmunication with the control room cperator for additicnal specific instructions.
TAKE wmcnVE ACTICH Initial corrective acticn will be taken primarily by tha control recra operator, since it involves adjustirg the voltage frun the control roan.
Specific corrective acticns may be directed by the control room operator.
8-3
NL-IU-11205-OO8-01-C; Respon$ to Diesel Generator " Generator" Alants Should the ocotrol rucn operator not be able to restore voltage, and the diesel gerntrator is supplyirg load due to a less-of-offsite pwer, tha OAO will te directed to transfer to the manual voltage regulator (per Procedure 13145-1). Remairi in constant cmrtunication with the 10 while perfornirg the follcwirg:
Depluss ematgency shatdown pushtutton (1-HS-4474) on generator a.
control panel.
b.
Verify the generator field volts are zero.
c.
Place local /recote switd) 1-HS-4516 to local.
d.
Depress nanual voltage regulators pushbutton 1-HS-4495.
Verify manual voltage regulator light is on.
e.
f.
Press exciter enable pushoutton 1-HS-4457.
g.
Press field flash pushbutton 1-HS-4459 for 3 to 5 secorrls.
h.
Mjust the generator voltage to 3750 to 4330 volts, usirq the voltage regulator raise-lower switch handle.
1.
Place the local / remote switch (1-HS-4516) to remote.
LOG THE ACTIVT1T log the activity in the diesel generator log book. This nust be done after the cause of the alarm is determined and action is taken to correct the conditicx) causirg the alarm.
E03 DG1A HIG TD4P GEN CNTL PNL ACENOWmrGE 7HE AIAM4 Acknowledge the alarm condition by depressing the ACFNALEDGE battan on the diesel generator panel. The DG1A HIGH TD(P GEN CNFL PNL alarm is located in window E03 cm the annJrciator panel.
DNESTIGATE THE AIAR4 7his alarm is functional when the diesel generator is cperating ami can be caused by the following ocnditions:
1.
overheatirg of exciter ocarpcnents.
2.
rising tenperature in the diesel generator room.
3.
loss of HVAC.
4.
failure of high temperature switch 1-75-4774 Check for rising tanpetuture in the diesel generator room by checkiry tenperature at thernostata for HVAC located in the diesel generator rocan.
Feel the back of the generator contrul panel for higher than normal tecperature. Notice any unusual smell, such aa burnirg insulaticn.
Look for smoke on or near the generator control panel. With the DG in standby, check that HVAC is operatirq correctly with the non-ESF fan rurnirg and danpers open if above 85 degrees F. Poport any iniication of smoke or fire to the control recen innediately.
Peport finiirgs to the Wuul rocan operator.
8-4
s NIeIU-11205-OOB-01-C; Paspond to Diesel Generator " Generator" Alarms
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TAKE u.a<xu;nVE ACTICN Take tneasures to restore proper ventilation to the D3 room, armi to the generator control panel.
In additicn, follow any other instructions given by the control roca operator.
Ensure that the diesel gem.rator room IWAC is operating normally.
IfG 'INE ACTVITY Log the act..vity in the diesel generator leg book. This nust be done after the cause of the alarm is determined ard action is taken to correct. the condition causirg the alarm.
E04 D31A IrW EXCITATICH bCKt0WTHEE 'INE AIAM Ackmwledge the alarm condition by dapressirq the AC10KhuIGE butten on the diesel generator panel. 'Ibe DGIA IDW EXCTIATICH alarm is located in wirdow E04 cn the annunciater panel.
DNESTIGATE SHE AlbW i
'Ihis alarm could be caused by the followiry conditions:
1.
Problems with the exciter regulator-2.
'Ibe generator beirg operated with a leadirs reactive power.
'Ihe alarm can occur due to testi29 TAKE CDRRECTIVE ACTION Follow the directive 3 of the control roan operator.
The situation is cleared when the annurciator light is no-longer illuminated.
'Ihe control room operator will make the corrections, by adjusting voltage.
LOG THE ACTIVITI Icg the activity in the diesel generator log book. This must be done after the cause of the alarm is deternined and action is take to correct the cxniition causire the alarm.
E06 EGIA URIP GDERATOR FAULT ACENOWimE 'IgLALARM JWknowledge the alarm ocndition by depressing the ACENOWIREE button on the diesel generator panel.
window E06 on the annunciatur panel.'Ibe D31A TRIP GEKEPATOR FAULT alarm is located DNESTICATE 'mE AIARM This alarm will appear when the 1868 or 186C trip and lockout relays have tripped.
186B will trip, causing the EE breaker to cpen and the DG to '
shutdown (except durirq an SI) if any of the followirg relays pick up:
8-5
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NIrIU-11205r-008-01-C; Respaid to Diesel Germator " Generator" Alarm
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4 1.
loss of field 140 ralay.
2.
phase oveluirrent 151VA,151VB, ard 151DC.
3.
neutral grourd ovntuirant 151N.
196C will trip after a tire delay if either of the follcuiry occurs:
1.
Reverse pomr relay U2.
2.
Negative phase sequence relay 146.
The 186C will cause the DG output breaker to trip (tut the ergine continues to run), if the DG is turnirq in parallel (as durity testing): The control rocn cperator will direct the OAO to locate the relays to t!w right of the generator control panal.
Identify targets, rote which ralms her.e targets shcwing, and report to the control rocxn operator which 186 lockcut zulay tripped.
TABLuhm;nVE ACITON The control rocn cperator should perfom the necessary acticos frun the control recn to correct the conditions causing the alam. If the target is FAvirg cn phase overnirrent relay, read phase A, B, ard C ameters to chtermine which phase had overcurrent. This will apply if the diesel is still runniry tfnder emergercy startup conditions.
Report findirgs to the cmtrol recn.
Once the situation is corrected and the 10 directs, reset the relay target trf:
- 1. pressirq the relay target rumt pushbutton.
- 2. lifting up on the push rod on the front of the relay panel.
- 3. resetting lockcut relay B or C (only after beirq diret?M to do so)
- 4. resettirq the annunciator alarm.
Never hold an 86-type lockout relay to the reset position. Tb do so can result in damage to the relay coil.
I@ THE AC Tgff Log the activity in the diesel generator log book. Siis nust be done after the cause of the alam is determined ard action is taken to ccust the ccniition causing the alam.
EO7 TRIP GEN DIN gMJWTFIGE THE AIRE Acknowlecge the alarm carditico by depressing the ACENOWIEDGE button cr1 the diesel generator panel. The DGIA TRIP GEN DIE alarm is locatal in wirdow E07 on the arnunciator panel.
JLN$TIGATE DIE AINM The probable cause of this alam is any one or nore of three 187 differential relays sensirg differential current. A 187 zulay is designed to te a sensitive relay that protects the gernrator by causiry the diesel 8-6 f
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NIr-IU-ll205-008-01-C Respord ts Diesel Gerexator " Generator" Alarm ergine and excitation to shut dcun and the generator breaker to open when a phaso-to-phase overnirrent occurs.
When a 187 relay picks up, it causas the 186A lockout relay to trip.
The 186A lockout relay will cause the trippirg functions to initiate. 'Ihis cliesel generator trip is available even durity emergercy startups.
Ensure that the diesel ergine has shut dcwn.
This is an auta.atic stcp situation.
If this alam occurrs ard the diesel generator rot trip, the diesel generator must be eme:tyency stcpped.
The control roca operator will dispatch the Oc% to detentine the cause of the trip. Inspcet the generator to detect sacke, hot spots, fire, burning odors, or burnirg electrical insulation.
Fhke notes of relay targets showing at the gercrator control panel, ircludity which phase (s) of differential relays are showing targets.
Check for other 186 lockout relays khich may have tripped.
Report finiings to the control roca operator.
TAKE OXo<u;nVE ACTICH If a fire has occurred, assist with firufightirg.
IMrther mrrective actions may irritde extensive repairs to the diesel generator. 'Ihe diesel gererator will be iroperable in an actual phase differential situation.
Follow any further directives received frm the contrul roca cperator. When directed, reset the target reset pushbatton, differential relay flag (s),
ard reset lockout relay la6A.
LOG 'HE ACI'IVITY Log the activity in the diesel generator log book. This uust be done after the cause of the alarm is detemined ard action is tape.n to correct the corditicri causing the alarm.
E08 DGIA KlGH TD4P GDI BEARDK;S ACFKMmE 'IEE AINM Acknowledge the alarm condition by depressirq the AC1400rn P button on the diesel generator panel. The DGIA HIGH TPAP GUI fell 91NGS alam is located in window E08 cn the annurciator panel.
DNESTICATE 'IME ALVM Determine oil levels usire a sight glass.
'Ihis alam ocairs at 0
approximately 180 F. at the generator bearings, and is prcbably caused by -
low oil level, or failure of the generator W bearings.
The control room operator will dispatch the OAO to locally cneck bearirg oil tenperature ard level.
The tenperature irdicator is a digital rea&ut type on fmnt of the gererator control panel. Report the ta:perature and level to tire control roan operator. Check for oil leaks or snoke at the pedestal 8-7
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4 NIrIU-11205-008-01-c; Respond to Diesel Generator " Generator" Alarus bearirgs. '1he problem cocid also be a taparature sermor malfunction or loss of power to.the taperature switch.
TAKE CORRIrrIVE' ACTIgtf Assist while Maintenance personrel adds oil to the pedestal bearings.
IDG THE ACTIVTTY Irg the activity in the diesel generator log book. ' Ibis nust be done after the cause of the alarm is determined ard action is taken to cornct the conditica causirg the alarm.
D06 DG1A GEN UKER-FREQUENCY If the DG is in parallel with the RAT ard this alarm occurs (at 59.5 Hz),
the generator output breaker trips. 'Ihe control roam operatcr will then stcp the engir.e. If the DG is isolated and powerirg the 4160V 1E bus, the control rom cperator will adjust the ergine speed control to.e frequency to 60 Hz.
AGNOWM THE AIARM Acknowledge the alarm ocniition by depressirq the ACMCWIZIX3E button cm the diesel generator panel. 'Ihe DGIA GEN UNDER-FREQUENCY alarm is located in-window D06 on the annunciator panel.
INVESTIGATE 'RE AIARM
'Ihis alarm :.s caused by urder-frequency conditicos when the diesel generator is running. 'Ibe O.d.wl room operator will dispatch the OAO to the generator control panel to check the targets on the relays.- 1%eport findings to the control room operator.
TAKE umwnVE ACTICBT corrective action will primarily be taken by the cxmtrol rom operator.
When directed by the control room operator, depress the relay target reset and reset the under-frwpocy relay target. Reset the anrunciator ard rotify the control rom operator.
LDG 'IHE ACTVITY Iog the act;.vity in the diesel generator log book. 'Ihis uust be done after the cause of the alarm is determined and action is taken to coruct the canditica causirg the alarm.
i 8-8
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Iftr IU-1120'r008-01-c; twpcad to Diesel Generator "Gemrutora Alarw2
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(tviueWC GUItE N11cw these steps to investigate the diesel generator alarre.
1.
Ackxuleiro the alarm.
2.
Investigate the alarm.
3.
Take corrective action.
4.
la) the event.
4 e
8-9
i NirIU-21205-008-02 C; Haapand to Diesel Generator " Generator" Alarms i
l 4
t SE2E-4 Hit Before pWing to the Task Practice, answar the folicwirg questions.
I 1.
How many 1cc r 9 ealays are on the generator control patal?
t a.
3 b.
5 c.
7 2.
State the ;tysical steps to take in remetting a relay target and a i
lockout relay.
E 3.
Which type of generator relay,- if picked up, will-trip the diesel generator under both norral start and amazganc'y start situations?
4.
If you see a 186 A, B, or C lockout relay handle in the TRIP positicm, you should reset the lockout relay imediately.
a.
True b.
False n
f l
t i
T P
E s
8-10
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NIeIU-11205-008-01-c; Re,gnxi to Diecol Gemrator " Generator" Alanns NEi>H1i 1.
a.
3 2.
n Prtsa relay target ruset pWtutton.
Peset target in31cator(s) en the relay (s).
o.
nirn the lockout relay's hmile to rwet, and quick \\y releare it.
c.
c d.
Roset the annunciator, 3.
187 differential Islay 4.
False.
You rust first irforu your supervisor, 54m namt cism you to ruset it.
4 0
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i Ins ItJ-11205-cou-Ol-c; Pmpord to Diesel Gernrator "Gemrator" Alarrei 4
TASK 1944"i1C0 Defore pnnulltrJ to the Ihrfortrance Test, otrplete the following Task Practice exereir.o.
1.
Review Procochire 17035-1.
De sure that yal urderstard all prwcauticm, llanitations, ard steps asscciated with respordity to dicsol gercrator "Germrator" alarm.
2.
Take this instructicm1 unit ard Pnndure 17035-1 to tM diesel gercrator buildirg.
De sure that you can locate all local atmpcmnts aid imNstion associatrd with respczndily to diesei gercrator "Gererator" alarus.
3.
In the diesel generator buildirg, walk thrugh tM taA of respording to diesal gererator " Generator" alarn).
If poemt. bin, have a fellcw tnires evalusta ytur perfornance usily Frootduru 17035-1 ard this irstructicm1 unit.
e 8-12
E-IV-ll205-008-01-C; Respord to Dict.el Genera.. r "Gererator" Alarm E!IQt%2311._ TASK TY%Cf1CE 1.
If you have any questions about the pncautions, limitations, or steps in Prootdurts 17035-1, ask juir imtnctor.
2.
You chould have been able to locate all local otmponents ard imtturentation associated with respordity to diesel generator
" Generator" alar m.
If you had any difficulty, adt your imtructor for help.
3.
You should have walked thrurgi the stepo rumary to respord to diesel generator " Generator" alarm.
If you had any difficulty, re-read the pertinent coctions of this instnctiarPJL1 Unit ard the pro:xdure.
Feaolve any questions with yolr instructor.
8-13
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