ML20113G593
| ML20113G593 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 05/27/1988 |
| From: | Gregory Stone GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20092F288 | List:
|
| References | |
| CON-IIT05-193-000D-90, CON-IIT5-193-D-90, RTR-NUREG-1410 NL-IU-11203-, NL-IU-11203-00, NUDOCS 9202210489 | |
| Download: ML20113G593 (7) | |
Text
__
4 dh[A Georgia Power
-t POWER GENERATION DEPARTMENT VOGTLE ELECTRIC GENERATING PLANT INSTRUCTIONAL UNIT TITLE:
RESPOND 10 EMERGENCY OlECEl. r,ENERATOR NUMBER: NL-lU-il2O3-00-C-001 inu np nvnirM.aLakME OGRAM OUTSIDE AREA OPERATOR REVISION:
c AUlHOR:
G. D, STONE DATE:
10/26/87
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DATE:
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REFERENCES:
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V0GTLE PROCEDURE 17035-1 ANNUNCIATOR RESPONSE PROCEDURES (REV 3) fh h_
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NL-!U-110Q3-GQ-C=OQ14 Aecpond to Diesel 62nerator Lubs 011 Alarms FERFORMANCE OBJEG m 1 Given a carective f rom the control room, investigate Di esel Generator Lube 011 System alarms,
?"e alarm inuht be ach newledged locally and/or the directive f rom the control room operatcr to respond to the alarm must be acknowledged.
An Insestigation of the condition (s) caurang the alarn must be made.
Actions to correct the condition (s) causing the alarm must be taken, if applicable.
All communication and activattes must ce performed in accordance with current, approved procedures.
INFORMATION When responding to any of the diesel generator alarms, obtain Flant Vogtle Pr ocedure Annunciator Response Procedure 17035-1, acknowledge the alarm by pushing the IHS-4590 ACLNOWLEDGE button, and determine if the alarm is valid.
Notif y the control room operator and await f urther instructions if there are indicat.ons that the alarm may be thvalid.
Depress the SILENCE pushbutton when the alarm is received to silence the alarm horn.
The control room operator will issue instructions to perf orm investigative and corrective actions as outlined in the procedure.
The control room operator will also determine which alarm is to be investigated first 14 multiple alarms exist.
After the investigation 15 complete, reset the alarm.
RESETTING THE ALARMS Bef ore resetting the alarm, note which annunciator alarm windows are i l l utt.i n a t ed.
More than one alarm may er'inguish when the alarms are reset.
Some of the alarms could be indicative o-a shange of status of the diesel generator.
ANNUNC!ATOR RESPONSE PROCEDURE The Annunciator Response Procedure is divided into sub-procedures for each of the alarms on the ALB. Ref erence the specific alarm by its winoow location (e.g., Col, B02).
The sub-procedure gives the setpoint of the parameter involved in the alarm (e.g.. nign Jacket water temperature) at the top of the page, the probable causes. the automatic actions te.g., the diesel will shut down or trip), the centrol roos operator actions, and the Instructions to be given to a FEO.
Fead the sections described under
" Dispatch an operator.
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NL- ! U-l l:03-00-C-00 l t Fospond to Diesel Generator Lubo 011 Alarms The annunctator response procedures ref er enced by this task were addressed to the c:ntrol reem operater. as were the diesel gener atar panels.
If the control room cperator receives an alarm on a diete! generator annunciator
-penel, tne OA0 will ha e the respective alarm on the annunciator panel at v
the engine centr ol panel in the diesel generator building.
As the N504 inucleer service cooling wate*) flows, it r,emoves heat from'the Jac6 et wat er.
The lube oil heat etchanger has jacket water passing through tubes to the heat exchanger, with Ibbe cal on the shall side.
When the diesel engine is running, excessive heat in the lubo oil will be remosed by Jac6et water. Jac6et water heat 15 removed by NSCW.
Temperature centrol valve TCV-19096 (19097) modulates to pass a certain amount of Jac6et water flow through, and allows some bypassing of the Jac6et water heat exchanger to maintain the correct tempkratures.
If the NGCW or jacket water temperature
- are elevated, the lube ot a temperat'tres can also be higher than normal.
The turbo on t pressure can be lower because the 011 viscostly drops at he higher temperature.
The control room operator will issue a directive to perf orm local acticht of the annunciator response procedura.
For the f ollowing tube oil temperature alarms, proceed as followst 1.
Silence the alerm.
2.
Acknowledge the alarm.
3.
Verify the alare by observing other indications.
4 Investigate the alarm per directions f roen the control room operator flocal actions in the annunciator responee procedures).
5.
T ue corrective actions as necessary.
6.
Peset the alarms arid note which alarms cleared and which ones remained.
7.
Report findtrgs to the control room operator and repcrt local readings, if changing.
O.
Shut down the diesel generator if directed by the control room operator.
9.
Log the event.
A01 - DG 1A LOW TEMP LUBE OIL-!N sc6 newl edne the al arm.
Investi cat e, the _jl ers.
This alarm occurs at 140 degrees F. T*e control room operator will dispatch the CAO to check that the tube oil 6eepwarm pump and keepwarm heater are operating, and to observe lube ot! Jam et water temperatures and lube oil temperatures. This as acccmplished ustnc ine coric trendicator at 'she engine control panel.
' Tal e corrective actlpna 1-;
-~.. --
NL-!U-ll203-00-C-001; Respond to Dt essi Generater Lube Oil Alarms If _the alarm was caused by f ailure of the lube ot! veepwarm pump, the control roem operator will direct plectng the engine in MAINTENANCE on the i
engine :cntrol panel since the diesel will be inoperable. Should the problem Sa due to i f atlad keepwarm heater, the control room operator wtll direct the CAO to prepare the DG f ~~ a start, should lube oil temperature t
reach 120 cegrees F.
ugg_ tne ac t s vi t y.
A02 - DG 1A LOW TEMP LUPE DIL-0UT Agtnewledae the alarm.
Jnvest i gpte toe al arm.
This alarm occurs at 140 degrees F. The control room operator will dispatch the OAO to check that the lisbe oil k eepwarm pump and leepwarm heater are operating and to observe lube oil Jacket water and lube oil temperatures.
Use the doric trendicator at the eng.tne's control panel.
Take correittve action.
If the alarm was caused by failure of the lube oil Feepwarm pump, the control room operator will direct placing the engine in MAINTENANCE on the engine control panel, since the diwsel will be 21 operable. Should the problem be due to a failed keepwarm heater, the cc'1 trol room operator will have you to prepare the D6 for a start, should lube oil temperature re.ach 120 degrees F.
(ca the activitvz A03 - DG 1A HI TEMP LUBE DIL-IN Acknowlem:e Ine alarm.
Investigg,t3 the alare.
The OAO will be dispatched to check (it the engine is running):
l.
Turbo oil pressure,.~ight and lef* jual pointer gauge on the engine control panel 2.
Lube oil pressure on the gauge at -s engine control panel 13.
Lube oil-out and jacket water-tr.
=~ erstures at the engine control panel. Select LO-00T and 'JW-IN e "
e tnermoccuple selector switch,
- and mead the value on the Dorit
- stcr (temperature metern.
.4.
Check NSCW flow to JW cooler. Trn fiaw-indicating transmitters (each with a smali
.e at least mid-scale).
F. low tnrough the JW qutot.
-1 ;
NL-IV-11200-QO-C-00lt Respond to Diesel Generator Lube 011 Alarms i
lTe_q.o_rt e;t i ve ac t i on.
e Should the lube oil out or jac6 et water to temperatur F, the coer ater will shut down the DG, o approach 2u0 degrees to innr ct t'.e CAD.
The CR0 will then rtier to !!!45 i (25L the 1G_!XLLYA -
A04
- DG 1A H! TEMP LUE4E CIL-0UT Acknowledq u he alarm.
Ln,y est t a a t e_t he g!_Lr_mz Tnis alarm activates when the lube oil temperature r the f ollcatng (i f the engine is runntng):
eaches 190 F.
Check 1
Turbo oil pressure, right and left 2.
Lube oil preseare
{
Lube oil-out and jacket water-an temperatures using th selector switch and the Doric Trenateator.
e thermocouple operator of temperatures.
The diecel generatorAdvise the control room water-cut temperature, and at 200 trips at. 200_ F Jacket NGCW flow through the jacket water cooler must b_ r lube oil-out temperature.
4.
e checked.
Take correntive action.
If engine is not running and the alarm c:
co-energize the lube oil heaters if local temperatureCurs, check local indications and 175_ F (LO-00T) is above e
Loa the_ad i,v,t_tn A06 - DG 1A LOW LEVEL LUBE OIL Acknow'.edac A _ alarm, investicati the ajArA The diesel should run about 7 days nithout during tne normal running of the di nel adding oil.
Some oil is used alsrm responses require that the lube cliand must be replaced. Many other l evel necessary, lube oil added. Plant Vogtla Procecureis to be checked and, if method for adding lube oil to the d esel 13145 1 oescribes the
- enerator.
T z
g;e corrective action.
Ensure that the proper type of ot!
- 13 generator.
caen orovided for the diesel i
The oil is obtainec +- -
'e Wrehouse under the instruction of the Shift Supervi; q
2.
Ne2sure the sump level using the 1-4 N
NL-lU-1120'-00-C-00lt Respond to Diesel Generator Lube 011 Alarms Ada the oil to the surp tnrough the dipstick connection on top of the sump using an electric or hand-driven pump.
4 Measure the sump level using the dipstick.
5.
Vert 4v that the sump level increases by the expected amount, i
6.
Feset te annunciator, notify the control room operator of the edcitton.
7 NOTE: The sump level should increase approximately' l inch f or every 55 im gallons of oil added.
These three alarms represent the trip alarms ice the Lube Oil System.
A05 - DGl4 TRIP HI TEMP LUBE OIL I
B02 - DGIA TRIP LOW PRESS LUBE OIL B05 - DGlA TRIP LOW FRESS TURBO OIL 3
E The DG1A TRIP HI TEMP LUBE OIL and the DGIA TRIP LCW PRESS TURBO Olu alarms will not trip the diesel if it is operating f rom an emergency start, z
Loa the activity.
A05 DG 1A TRIP HIGH TEMP LUBE 01L i
Acknowl edoe tne,a,,,Lqr_ma investinate the alarm.
This anntmetator alarms at 200_ F lube oil temperature.
If the diesel generator had been sterted with a normal start (not emergency started), it should have tripped and shut down when the alerm occurs.
Approximately 90 seconds af ter the trip occurred, a timer causes parmissives to occur so 2
that the diesel generator may be restarted (as long as the lube oil temperature detecter senses less tnan 200., F).
Under an emergency start, the alarm would still occur at 200_ F cal temperature, yet the diet.el generator would not trip.
Also, the diesel generator can be emergency started with the alarm present.
The LO will dispatch the OAQ to perform suosequent actions at Procedure 17035-1 (17038-1 f or DG 1B), which includes operating the thermocouple selector twitch on the engine contrc'l canel and checking f or proper operation of lube oil, jacket water, and NSCW systems to the diesel generator.
1.
Use local gauges to checkt
-NSCW flow through the jacket wat?r Na* erchanger
-Turbocharger oil pressure (leit -
7t) et the engine control panel
-Lube oil pressure (at the engtna
.'+1) 1-5
NL-!U-il2O3-00-C-00lt Respond to Diesel Generator Lubo 011 Alarms t
2.
Use the thermocouple selector switch to check
-Labe oil temperature out, from the engine
-Ja:tet water temperature in, tn the engine Feport findings to the control room operator and assist in determining the csuse of the alarm.
Tale correct ve action.
Wii.h the diesel generator running under emergency staet conditions and the alarm occurring, closely mo"Itor lube oil-out temperature using the thermocouple selector swi tch.
If the temperature continues to increase above 200_ F. the control room operator may (depending on Technica'l Specification requirements and operational considerations) direct stopping of tne diesel generator.
Coordinate the method with the contrel room operator.
Lao the agttvity.
4' "
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~B01'DW IA LOW 55ESS LUBE OIL (at 40 psig) fAcInowledae the alarm jnvesth ate the alarm, The CR0 will direct the OAO to local panel PDG2 to investigate the con'dition causing the alarm.
The most probable causes for this alarm cre:
-Lube oil filter clogged
-Lube o:1 strainer clogged
-Pressure regulator (s) failed open
" Engine-driven lube oil pump malfunction
-Pressure switch malfunction Iske correctise_ actions The CR0 will direct the OAO to perform the following
-Verify low pressure at PI-191761 (less than 50 psig) s
-Verif y lube oil temperature out to be between 160 and 100 cegrees F.
-Check lube oil sump level; if Icw (end of dtpstick), add lube oil per procedure 13145-1.
-Check for.the associated DG14 HI DIFF PRESS LUBE DIL FILTER alarms if necessary
(> 20 psid), shift the ttiters.
-Check the luce oil strainer differential pressure on PDI-9092 or 9088; if necessary
(> 20 psid), sntit the strainers.
Loo the acti vity-Log the activity in the appropriatu lo;bect.
i 1-6
5 Georgia Power d4 POWER GEinnA TION DEPARTMEN T Y'4 k
VOGTLE ELECTRIC GENERATING PLANT INSTRUCTION AL UNIT TITI.E ;
RESFChD TO ENERGENCY DIESEL GENERATOR NUMBER: NL-!U-11203-00-C-002 t QLI WA1FR RVGil!L AtARMS,.
PROGRAM:
OU151DE AREA OPERATOR REVISION 0 AUTHOR' G.
D. STONE D A'IE:
10/26/C7 APPROVED' pg{
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DATE:
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REFERENCES:
/
V0GTLE PROCEDURE 17035-1 ANNUNCIATOR RESPONSE PROCEDURES (REV 3)
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STUDENT DATC emaer-MAS ER COPY
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NL-lg-11 M C-0001 Respond-to Dtesel Generator Water Jac6et Alarms y F0AMANCE OBJECTIVE
.Gisen +
- -c t :.e irca the centrol ream, respena to otesel generator laci et
.oster 5, stem 3; ares.
All ccetunication arc activities must ce ceriormed in accorcance witn verant, aporoveo preceduret.
The alarm must ce acknowledged anc its
,allatty determined.
Actions must De talen ty correct the conatt.cn 5
causing the alar %
INFORMATION The control room operator will cbtain Flint Vogtle Annunctater Response Procecu e 17025-1 (17025-1 for "E" c1esel generator), and issue a ctrective to respond to tne alarm. Acknowledge the alarm and determine 1 4 ;t is
,alid.
Nottf / the control rocM cperator of tne statte of the elsem ' alid or involid) and wait for further instructions.
The annunctator panel
'n
-the control room for-which annunciator r esponse-crocedure 17035-1.t!7038-1) was written,.is'similar to the annunciator canel located at the engine control. panel.
The _ control room caerator will i ssue instructions f or investigative anc 4'
corrective actions to be cerformed as outlined in the orocedure.
If there are multtole alarms, the1 control room operator will also detarmine which al arm snould be investtr;ated first.
After the investigation is complete and the conditions have been correctec. reset the alarm.
DIE 3EL GENERATOR JACLET WATER SYSTEM The two main circuits an the Jacket Water System are the Jacket water k eep war m circuit and the engine-driven Jacket water pump circuit.
The' Jacket water keep-warm pump t$ electrically criven when the engine is
.not running.
The Jacket water necter uses a thermostat to keep tne water-i rt the:Jaciet Water System at a constant ;emperature.
Thts, in turn, 6eens the. J ack et water at a constant temperature 'to i eep the diesel engine warm in the STANDBY ~(not runningl mode.
'The Jacket-nater pumo! takes suction f'om t"e Jacket water standolpe and
-aiscnarges through the lobe oil heat er:9 anger and into the passages to tne
-diesel engine.
The.tactet w9ter fret ice e gine returns to the standpipe, cceplettng tne cycle.
nce the engine r, tarts, tne jaciet 4: 7 an-w.srv ;vmo stcos, ano the JSckat water nester snuts off.
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=-_a______-____________-__________
4 Nu-lu-11:00-00-C-002: Gescond to Diesel Gene *ator Water Jacket Alar.r.s r
ime e ;tre-cri.en ja:iet nater cump 1s : t ven tv gears on the f ront ci the engt c.
- mo sceed is cependent voon the speed of the diesel engine.
This auco + e,
- uct; from the jac et water standatpe and discharges to the
{
ther>; ic;: n eass calva.
Wnen tne water to the thermostatic bypass salse is rela!!'.91, :C l i.. t'e talve bNDPsses tf'e JPciet Water heat e:;co nager.
As Ene f3:Fet s3ter teT"erfture in the jeclet water neat etchanger Chenge%.
t~e t scrcstat:: tcrass <al s e will modul ate to mei nt ain it s ces t rea teT29"4ti, e.
e T e ;30 et water flons thrty;h the tube t.ce of tne iube ct; heat encnanger o
i anc into tne otesel engtre.
art of tne jac;et water -icw uspasses tne mest e_ changer and goes to tne diesel angine.
he Jan et water 4rcm tne
~
T
- lesel en;ine ryttens : tre stancot e.
Tne local ter;erature '.cdica tons et the heat e :: hanger are f or tre Jacket water goteg in anc ccming out of the heat excnanger.
The local temperature 1,ctcatinns + r tne nuclear service cooling water 'N5CW) monitar NECW going
\\
tr tnd coming cut of the neat excnan;er.
C01 - CGIA LCW TE9P JACtET wATE9-!N CO2 - CGIA.CW TEMF JACtEi WATE;-OuT i
d newledy the alSem, Investinate tre.. al arm.
Eepert the temperature Indications ter tne Jacket water in and cut of the diesel on the Dort c trendicator.
These alarms may be caused oy a malf unctica cf the Jacket water Leeo-warm cump cr possibly a malf unctioning JW 6eeowarm heater or thermcstat. The eep warm pumo should not ce
==
operating while the diesel is running.
C e c t that the JW keeowarm heeter-anc pump tre c;erating, and that tnetr 1CC creakers are not tripped.
r 76 e corrective acticn.
N:tif f ine control room operator as tes:erature decos to 140 degrees F.
Assist tne acerator in starting anc r ':n; -He CG to cycle the temperature tetween 140 ano 170 degrees F. unti!
-=.ates are made.
Loc t"e activi;v.
C0, - DGIA HI (EMP JACLET WATEF-
. ~ ce:re?s F.)
l C04 - CGIA HI TEMP JACLET WATEF-
- gr aes F. )
As the N3CW flons. It removes neat
+~
-..c e r.
ine Jarret water removes heat from the luce oti at t2
- changer.
- i tne NSCW
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't-IU-11:0!-00-C-00:1 Gespond to Diesel Generater Water Jacket Al arms e
- r ;+ciet aater t anceratures are elevateo, the lube oil temperatures may also a t gaet "u n nor mal.
- t os g;p the p{ arm,
^<est 2fte *.te_llif2x Vert +. the nign temterature :andittans exist, anc monitoe the jaciet water couter inlet, J W I N :-n a J W GU T. temperatures on tne engine control panel.
I4 e correcti,'e 3ct109 T~ e ccntr 31 room ope
- at or will tr;p the dieset gener& tor prior to it-JW tempereture fin er cut) reachtng 200 cegrees F.
(;;a t r e, ct : sLtit 005 - 031A TRIP H1 TEMP JACvET WA~ER V
9 Actr,csleaan the alarm.
The CO3 - DG; A Hi TEMP JACFET WATER-IN and C04 - DGIA MI TEMP JACtET WATER-GUT will precably annunci ate price to tne cresel trip.
The DG1A H!
6-TEMP J ACr-ET WATE;-IN anc DGI A HI TEMP JAC6 ET WATER-0UT al arms should have been a:Fnowle3ged Deiore actrewledgtng the DG1 A TAIF HI TEMP JACi ET WATER alarm.
Investicate tne al arm, InsLect the items listed in the Frcoable Cause section of the sub-procedure, anc report the local j aci et water and NSCW temperature indications at the jacLet water heat e.cnanger.
~
1.
Verify that the diesel generatar nas trtoped and has come to a stop.
NGTE: This diesel engine trip is an ' emergency auto stop." ano the engine cannot be restarted untt. a+ter a timer (approximately 90 seconds) has timeo out, the Jaciet aa?.e temperature sensors,Getect lets tnan 200_ F, and you nase :en :2ced the EMER TRIP reset push
- button, bb 2.
' 'er t i v that the red emergency tr :
- ;a itght is illuminated on the engine control panel.
R eport all tileminated annuncta:.
- ne ccntrol room operator.
4.
The control room operator wili
,a
'u;tng Proceduce 170:5-1 or
- E 17038-1) in findirq the exact :
.e teto. Checks to make include:
4.
Stancoipe level--tu it low'
- c. Engine driven JW punp--cne:
- c. Tnree way mtuing val.e--t f 2-
- a temocratures in J
and out (JW cooler) w111 ba ?r;-
und JW t exeprstures bC S
_ _ - - _ _ _ - - _. _ _ _ - -. - - - - _ - - _ - - _ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ' - - - - - - - - - - ^ - - - - - - ^ ^ ^ ^ ' ' ^ ^ ' - - ^ - ^ -
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4 Respond to Diesel Generator Water Jac6 et Alares taL-IU-11 0!-00-C-00:
P 1
r,c f ecm tre eccler will both te htgn.
- 0 2.
- c, icr LeM 7 per at or.
.ngs to tr.o controf rcom o es.< *
+,c room Tv e :or e:.i.e 9:tten.
ctr actea by the control Perfcra,w ccrrectise actions a?
1.
tahen directr<d) ans <er t iv trat toeritor.
Cepress tne EMER TR*P reset pue.outton step light entingutenes, destr(c.
tne r eo enercency Tre dienel gene-ator can now to restartec, ti 3.
M.NE $U.1.1} *:_f t.
- OGI A (CW F AEE5 J AD ET WATER 1
CO6 C07 - DGl A 1 RIP LOW FREES JAD ET.<ATEd COG - 06:A LCW LEVEL JACrET WATER The DG 5 astg. deureastne.
The CG LOW FCELE JACVET WATER alarm cccurs ate ostg, cacreasing. These TRIP LOW FRESS JACLET WATER alarm occur s atv4ere runnina, and the icilowing if tne diesel gener ator alarms would occur occurred:
tne engine-criven Jac>et water pump Malf unction ci 1.
in the Jacket water system C.
Lest in the 15cl et water stancolpe pressure swa ten f or tne alarm Talf unctionea Low level 4.
Jacket water acVnowledge the _ al arm.
d at the control Ln;ggj;.t_qate the +1 arm.
TFe al arms will occur at both the engine control canel anine CW FRESS J ACLET bnnunciator panel. Upon recesct
- +
r e o.t and a directive from the CRO:
it
~ '" e engine control panel, Check the pressure at the gauge - >. 6 vm setpotnt.
1.
should agree approximately wtt'
- n. :ne f r ont of the diesel engine.
the jacket water pump gauce Do not This tr<dicates discharge cresstr e
- 'e 15:6 et water cump.
Check T.
cr essure gauge f or the jack et confuse thiu ga;ge with the c;* "
'esding less than 10 psid.
If tne immediately.
water ( eep -w ar m p u.T.p.
at ".aer ator inf orm tne less of level, and is fluctuating, at
+
or the standoipe level ice
_T/EL JACLET WATER - ai arm 7.
Check T u-l e ai s.
A leat leadtny check for jaclet water ctnt.
will occur if the level has cr.
3r auma insing suction to a loss of water will result
+ :larm to annunctate anc tne alarm occurring, en f
<s i
yt Iu ; gy;w?):1 respono to Diesel Generator Water Jac6 et Alarms 9 :vi: be cery. t st ole.
14 hlCw
- e9;e ature to and f rom the JW ced er ry at m ct tne same temcerature, this can Indicate that the JW 0,
vettatte t3 pass val <e nas stect in bypass.
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s.e aqtic,.
- re nt v.
- t riin witn the w sten, into will primutly in.al.e adannq c nt r er M 1: eo e.er to tte stenoptoe.
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Upon receipt of tne DG TRIF LOW FFE55 JsO ET WATER alarms b newle g e tne #1 arm.
I nv e s t I qb,(? t h e A l Or 9,_
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li the diesel ;enerato+ nad teen started under concittans other than an mergency start. sertiy that the ctesei generator trtopec and snutdenn.
Had the start neen an M ergency ctart (todicated ov the 3
tafety injection actuation signal;. or a manual emergency st art, tne green " safety sqJe:tton signal" I ignt would have been lit and the red
'shutdrwn s, stem active" light.oculd have teen entinguisneo.
On a creal stert, the green " safety injection ngn al" light would have teen extir.guished and the rec "shutdcwn sistem active" lignt would be lit.
WOTE: Had tne diasel genercter trinced cue to low Jacket water pressure. and had been started under non-emergency start condittuas.
~
tt is posstble for i t to restart immediately with an emergency start, or after 90 *m onds with a cormal start.
If the diesel generator nas started by an emergency start (31 c3 or manual), the annunctator will CCoe in, and the diesel engine will c ntinue to run.
2.
If ths Jtesel gener ator is still r;9ntng (had tseen started by en q
energency start) t 3.
Verif y that a low pressur e ::rci t t on at.tually e:-:1 s t s b y observing the Jacket wate* pressure 4
.ge et tre engine control panel, 5
c.
- heck the c3schargo presh e a-ne aciet water pump by cbserving the jacLet water :
.: -e gauge at the front of the atesel generator.
After t' r
-- a, t; should read :ero, and the jacket water keepwarm duas e
r.ntng, c.
Check the standotpe level
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':tcstion of loss of level, and check f or Jack et water lep
- 1 4. cant ' leak will result in tnis annunciator ccming cr,
" m nt is reacned. Enamtre the engtre-driven 1W two s a t l er e.
T 36e corrective A"t1On._
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NL-!U 11:03-00-C-002; Respond to Diesel Generator Water Jacket Alarms Coordinate closely with the control room operator.
Ii operational and technical toect fication conditions warrent, the control room operator may issue a nrecttwe to trip the diesel generator per Procedure 13145-1, ei ther by emergency stopping or by shutting down the diesel generator per the precedure.
Loa the activatv.
Upon receipt of the DG LOW LEVEL JACLE1 WATER alarm:
Ack nowledan the al. arm.
Inveptiaate the alarm.
1.
Verify that a low level exists.
Observe the level gauge on the standpipe (1-L1-19100 for IA diesel generator) and the wide-range level instrument LI-5741.
Take corr m.,ge_act1on, 1.
Fill the standptpe to normal level.
2.
Instruct an assistant OAO (dispatched by the CRO) to monitor the Standpipe level or,1-LI-17100.
NOTE:
The indicated level on tha narrow range level indicator changes quickly once the valves are opened.
Thw normal level is marked on the level indicator.
Ensure that it is not full prior to coening the valves.
3.
Report the standpipe level to the control room.
4.
Open the 1-2403-U4-7S3 valve from tne Demineralized Water System.
5.
Ocon the jacket water fill and makeup valve.
6.
Close the Jacket water fill and mak eup valve when the assistant OAO indicates that the indicator shows the normal level has been reached.
7.
Close the 1-2403-04-753 valve from the DEMIN Water System.
s G.
Reset the DG lon level Jacket water alarm.
7.
Investigate the Jacket Water System for leaks, and notif y the control room of their location. The CR0 may also issue a directive to check drain valves for laaks.
Ute Plant Yogtie Procedure 11145-1 for a-listing of diesel generator vaJves.
10.
Monitor level after filling for irc: cations of a leak, and check piping f or leaks, CAUTION: Jacket water may contain ra:a-::us chemicals.
j og the adtivity.
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' NL-IU-11203-00-C-002: Respond to Diesel Generator Water Jacket Alartns s
F FERFORMAltGE GUIDE Follow these steps to investigate a ciesel generator al_ arm associated wi,th the Jacket Water System.
1.
Acknowledge the alar,s.
2.
Investigate the alaren.
3.
Take corrective actiori.
4 Lcq the act:vity.
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NL-lU-li203-00-C-002: Respond to Diesel Generator Water Jacket Alarms t
LE1F-TEST Before proceeding.to the Task Practice, answer the f ollowing questions.
1.
What are the two main circuits in the Jac6 et Water' System?
2.
When the diesel engine is running, and the DG LOW TEMP JACLET WATER IN annunciator or the DG LOW TEMP JACKER WATER DUT annunciator alarms, the Jceket water keep-warm pump will automatically start, and the electric heater will energire, a.
True b.
False 3.
State two diesel generator trips associated with the Jacket water system, and give setpoints. Spectfy which would trip the diesel even it it had been started with an emergency start.
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2-B
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- W NL-1U-11:03-00-C-002: Respond to Diesel Generator Water Jacket Alarms ANSWEC3 1.
The leep warm circuit and the engine-driven Jacket water pump.
2.
False. The Jacket water 6 eep warm pump and heater only operate wnen the diesel engine is of f.
3.
DG TRIP HIGH TEMP JACLET WATER.
Occurs when 2/3 engine outlet water detectors detect 200 degrees F, and will trip the diesel generator had it been emergency started.
DG TRIP LOW PRESS JACKET WATER.
Occurs at 6 psig jacket water pressure, and will trip the diesel generator only after at had been-normally started.
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f4L-IU-ll203-00-C-002: Respond to Diesel Generator Water Jacket Alarms TASK PRACTICE Before proceeding to the Performance Test, complete the following Task Practice exercise (s).
1.
Review Procedures 17038 and 13145.
Be sure that you understand all precautions, limitations, and steps associated with responding to a diesel generator Jacket Water System alarm.
2.
Take this instructional unit and Procedures 17030 and 13145 to the
. diesel generator building.
Be sure that you can locate all local components and Instrumentation associated with responding to a diesel generator Jacket Water Syst em al arm.
3.- In the diesel _genertor building, walk through the task of responding to a diesel-generator Jacket Water System alarm.
If possible, have a f ellow trainee evaluate your perf ormance-using Procedures 17038 and 13145 and this instructional unit.
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- NL-1U-11203-00-C-002 Respond to Diesel Generator Water Jacket Alarms FEEDE4ACK ON TASK PRACTICE 1.
If you have any Questions about the precautions, limitata cns, or steps i
in Frocedures-17000 and 13145, ask your instructor.
2.
You should have been able to locate all local components and instrumentation associated with responding to a diesel generator Jacket Water System alarm.
If.you had any difficulty, ask your instructor f or bel o..
}
3.
You.snould have-walked through the steps necessary to respond to a i
diesel ~ generator Jacket-Water System alarm.
If you had any
-dif ficulty, re-read the pertinent sections of this instructional unit and the procedure.
Fesolve any questions with your instructor.
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