ML20092F661
| ML20092F661 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 08/29/1989 |
| From: | Gregory Stone GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20092F288 | List:
|
| References | |
| CON-IIT05-002-133F-90, CON-IIT5-2-133F-90, RTR-NUREG-1410 NL-IU-11205-006, NL-IU-11205-6, NUDOCS 9202190459 | |
| Download: ML20092F661 (10) | |
Text
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/y WXTITE ELMIRIC GDERAT,00 PIRIP ItElTUCTIQ(AL WIT
- 1T11Es DEFVIDICY STOP DE DIISEL
!!LMBER: Ifir IU-11105-006-01-C GDEPMOR IDCALLY (!WUAILY) 110 GRAM:
CUISIDE AREA OPERRIOR REVISIQh 1
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- monas, WCT11E ETOCEIURE 13145-1, DID3EL GDERATOR (REN 17)
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NIi-IV-11205-006-01-C; Dnergency Stop Diesel Generator IIcally PERP0fM:2MLQBHETD5 Given a directive fnzn the control recan, enertjerry attp the diesel generator (1ccally) mnually.
All crximinication and activities must be perfomed in accordance witn current, approved proceNrus. 'nie activity mst be rvported to the control In.xn after the ergine stcpe,
.DNT19tl Stqpiry the diesel ergine under emergency ccet11tions can be perfomed in the czntrol roca or at the diesel generator ergine contrul board.
An emergency st@ither the IDCAL or RDUIE positiondiffers frun n norml stop in that the witch can be in e
, WMreas a norm 1 st@
would require placity the control in the IOCAL position. Additionally, after an esurgency st@ has been perfomed, the diesel generator is iroperable, siroe it will not start on an emergercy start, SIAS, er any other signal, until after th= emrgency st@ has bren reset.
Good jrA--et nust ce used to determine when th diesel engine mst be s
amergency stopped.
Rune circumtanues do not permit the time to call the centrol recan or to stop the ergine usirg the normal procedure.
Yeep the follwirg situations in mind:
1.
su&lan Nel oil leak A potential for a fire exists if fuel oil is on the diesel ergine or extzmaly close to the running diesel.
Injur' to Persantal 2.
/
If it appears that someone may be injured due to the runnirg diesel, einergency st@ the argine.
3.
Ur..u h r11able Fire If there is a ~ fire on the ergine ard/or generator, or in close
_ proximity to the ergirm, emergency stop the ergine.
4.
Upon the Directical of the Control Rocn Operator Urv5er artain conditicris the control recen my not be able to energency stg the ergine frun the control rocin. The control rucun operator may 6-1 I
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f NIeIU-11205-006-01-c; Emergency Stop Diesel Generator Ircally issue instructions to stand by to emergency stop the engine in case a i
normal st@ has failed.
lORMAL DER 22C SIOP 4
DETRESS THE ENER~nCI STOP R$1GIJI'KH Identify the IMEFCE2Cl SIOP p2shbutton and dspress the button.
'Ihe 1-HS-4567A(ine co)ntrol panel.IMER22C !TIOP push button is located on the lef 4568A side of the eng At this time, locate the IME7CDCl FrANT pushtutton.
It is irperative that these two buttons are not confused with one another.
'Ihe engine will begin to slow down if the emergency stcp was successful.
If the orgine does not stop, attspt to stop the engine by an alternate nethod.
VIRIfY THE RED EMER~nCI SIOP IAMP T711MINA2]E The red ENER22Cl SIOP lanp will 11Aninate if the emergency stop was bwaful.
EE3'RESS THE ENERGE2Cl S'IOP RESET IUSHERJI'Im Press EMER22Cl SIOP RESET pushbutton 1-HS-4581(4582) at the ergine control panel after the diesel generator has ocme to a halt ard the " distress situation" is under control.
Verify that the red DER 22Cl SIOP lanp extinguishes. 'Ihe diesel generator is inoperable until the emergency stcp is reset.
In addition to a local emergency stoo, an emergency stcp frun the following conditiorm nust also be reset using 1-HS-4581(4582):
1.
Dnergency stop'tran the control roam 2.
Emergency stop frun 186GA (differential trip and lockout rolay) 3.
Cverspeed emergency auto stop 4.
Low lube oil pressure emergency auto stcp liigh jacket water temperature emergency auto stop 5.
'Ihe tinergency stop reset pushbt:cton nust be deprmaamd only after the prrblera causing the energency stop has been corrected and the v.4d.ml_ room operator ha-a directive to reset.
ALTERNA1T DN' SIOPPDC MEMOD3 4
'Ibe QA0 vill not he responsible for denanstratiry the alterTate methods of emergency stopping the diesel _ generator, but will be required to hibe
. the methods.
These alternate methods are not listed in Procedure 13145-1 6-2 i
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NIrIU-11205-006-01-C; Emenjency Stop Diesel Generator terw11y as ways to stcp the ergine in an me ency, and are rot expected to be used to shut down the diosal sirce no..
stoppirq and menyerc/ stqpirq methods should work.
The Gcs are iT=r ysible for local operation of the r
diesel ergine and mst be aware of the cainbilities of the diesel ergire.
If the followirq methods rust be used, a;prtwal cust be chtainad frun a licenrai cperator.
The reasons for ributtiry down the diesel generator, vemus leaving it runnirg, mst be weighed.
If the norm 1 stcp didn't stcp the diesel c,enerator, it could be smething as simple as a switch configuration (such as havity the local /Renate switch in Facte, yet trying a norml stcp lccally). The correct use of pirit procedures should pruchde this, control air pressure mst be avn11able for a normal stop.
If the cmtrol rocn operator had tried an emergerof stop, yet the In ccntinued to run, again the cause may be due to the 1ccal/rmote switch beiry in 1ccal, or re control air being supplied to the fuel and cmbustion air shutdcun cylinlars.
The local /rurote switen positions shculd not prevent a local aw.rgency stop from ocmrrirq (breakglasa); however, control air mst be available for shutdown.
Control air rust also be available to shut down the diesel ge*erator for any autcautic trip.
RINIORE OCtTITOL AIR SUPPLY TO 'IEE FUEL AND CIMUSTIrN AIR stKfII)owN CYLINutd>
If there is no reascn to inwdiately shut down the diesel generator, restoration of the tornal shutdown methods first is desirable, then shuttirg down usirg the usual shutacun methods (rormal stop).
Shauld cmtrol air be available, yet stcpping attspts frun the cxxitrol recu ard engine control panel fail, tha followirq two methods may work:
Ut.PKBGS 'IME IUSH TO S'IOP/IULL 'IO FE.H K?OB This knob is located cn the front, left side of the diesel generator.
Depressir to trip, g this control knab will cause the diesel generator breaker and the ergine will shut dcun due to the fuel rack shutdcun cylin$er extendirg to the 10 FUEL position.
lOI'E:
The next method would have the P90 in a potentially dargerous location.
The overspeed trip mechanism is located on the diesel engina fruit, to the right of the governor.
Tb get to tnis location, climb cuer the lube oil heat exchanger (which is hot) or over the 6-3 J
N!rIU-ll205-006-01-c; Emergency Stop Diesel Generator Ircally jacket water heat excharger, where no easy access exists. 'Ihe area is located beneath the turbochargers ard naar operatirg ptrps.
MMUAfIV 'INIP 'IME OVERSprm [LVICE
'Ihis will exterd the fuel rack shutdown cylinder to the NO FUEL positien. _ me er=+=mtion air valves will close rapidly, starvirq the engine of air. We generator output bruaker will trip.
'Ib manually trip the overspeed device, push upwards cm the linkage arm which strikes two tabs on the overspeed device causing the trip to occur.
%e diesel generator is iluperable if the overspeed cirulits are tripped.
'ItmN 'n{E GOVERN 0R'S SPFm SEP KNOB FUf f V CIUREg'rnCWISE '
'Ihis can shut down the diesel engine, even if control air is not available. We diesel generator's operability will be affected when this is done.
ISOIA'IE FUEL OIL 'IO ' IRE DTMi'L ENGINE Isolate fuel oil to the diesel engine by unlock 1rq and closirq valve 1-2403-4J4-031 (032), which is normally locked cpen. % is neth:d will not directly cause the generator output bruaker to open, ard 13 not listed by the marnifacturer as a raathod of stoppiry the diesel ergine.
It could also result in havirg to reprine fuel oil to the ergine ard damage to the injection pumps due to lack of lubrication. 'Ibe engire will stop even if control air p/ essure is arallable.
CWrICH: 2e asthods listed in the above are unortnodox mthods.
Preplan these methods with the SHO, who will weigh the consequences of usirq these methods.
Again, the normal stop methods ard the energency
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stop procedure are the approved methods of shuttirq down the engine.
FJPIFY 'IME 00N1PDL RDCH Notify the control roca and the Shift Stpntvisor that the diesel engine has been emergency > topped.
IDG 'IME ACTIVrrY.
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t IUrIU-11205-006-01-c; Emenyency Stcp Dieml Generator Ircadly l'ERFDiMANCE__ GJIDE Follow these steps to sertprcy stcp the diesel generator.
10EAL DOGDU SIUP 1.
Depress the D4INDO SIOP puchbutton.
2.
Verify that the red DDGDC FIOP lanp 111umimten.
3.
Depress the D(DENCY SIOP RESET pushbutta).
4.
Notify the contzel rotan.
5.
Ia3 the activity.
ALTDMATE D4Ela2m moPPnu hencos 1.
Pastore centrol air st4 ply to the fuel ard cxrtustion Sir shu':down cylirders.
2.
Purh the TUS!! 'IO SIOP/IUIL M 15 knob.
3.
Piumally trip overspeed device.
4.
Atrn the gevener's speed set krob fully countemlockwise.
5.
Isolate Ibel oil to the diesel ergine.
6.
Notify the control IVam.
7.
Irg the activity.
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I NIeIU-11205-006-01-c; amertjerry stop Diesel Generator locally grrr-n st Before procealing to the Task Practice, enswer the follwirq questions.
1.
How does a marmal amargency stop differ frun a normal marual stop?
2.
Wicit of the follwirq may IWre a marmal emergency stop?
a.
SuMen fuel oil leak b.
Injury to personnel c.
IAw da,ullable fire d.
Upon the direction of the control roam operator a.
All of the abovJ 3.
Of the follwing alternate methods of chutting down the diesel engine prueented in this IU, state two whicts zwquire control air pressure, and two whicts do not.
(a) Isolate fuel oil marmally (b) Push the push to.stop/ pull to run kn2 (c) Marmally trip the overspeed device (d). Turn the gcnernor speed set krvab fully counterclochwise t
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f, NIrIU-11205-006-01-c; Daargency St@ Dional Generator locally A82113 1.
An st@ differs from a rormal stop in that the LOCM/RDDIE switch can in either the IIGL or RDOIE position, whereas a rormal stop would require you to place the control in the IrrAL positica.
2.
e.
All of the above 3.
a.
Air not required b.-
Air required c.
Air required d.
Air rut requitwd 6-7
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NIr1U-11205-006-01-C; Emergerx:y stop Diesel Generator ier-ally TASK IRACTICE Before proceedirg to the Perfonnance Wst, canplete the follwirg Task Practios exen::ise.
1.
Enview Procedure 13145-1.
Be sure that you understard all precautions, limitations, ard steps associated with emargency stoppiry the DG locally.
2.
Take this instructional unit ard Procedure 13145-1 to the diesel generator buildirg.
Be sure that you can locate all local %mu ts and irwtrumentation associated _with enargency stcppiry the DG locally.
3.
In the diesel generator building, walk through t!w task of emergency stoppirg the DG locally.
If possible, have a fellw trainee evaluate your perfonnance usirg Procedure 13145-1 aid this instructional unit.
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i NL-IU-11205-OO6-01-C; Dnergency Stop Diesel Generator Lccally lj.
j FEEDEACK QtLTASK PRACTICE If you have any questions abolt the precautica, limitations, or ste,w in Procedure 13145-1, ask your instnetor.
2.
Ycu dould have been able to 1ccate all 1ccd cxrponents arri instrumentation associated with emergency stcppirr; the DG Iccally.
If yea had any difficulty, ask your instructor for help.
3.
Ycu should have walked thruxjh the steps mary to et stop the DG locally.
If you had any difficulty, re-rav.1 the pert t
sections of this instructional unit ard the prtodutu.
Resclve any 4
questions with ycur instructor.
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