ML20113G587

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Rev 0 to Instructional Unit NL-IU-11202-00-C-003, Respond to Emergency DG Fuel Oil Sys Alarms
ML20113G587
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 05/27/1988
From: Gregory Stone
GEORGIA POWER CO.
To:
Shared Package
ML20092F288 List: ... further results
References
CON-IIT05-193-000B-90, CON-IIT5-193-B-90, RTR-NUREG-1410 NL-IU-11202-, NL-IU-11202-00, NUDOCS 9202210487
Download: ML20113G587 (13)
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{{#Wiki_filter::, Georgia Power [ POWER GENERATION DEPARTMENT ~ -1 f. VOGTLE ELECTRIC GENERAT!NG PLANT INSTRUCTIONAL UNIT TIT 1.E : RESPOND TO EMERGENCY DIESEL 6D:ERATOR NUMBER: NL-lu-It?02-00-C-003 rop np uvurn ainonn PROGRAM: \\ OUTSIDE AREA OPERATOR R EVISION' 0 i AUTHOR: G. D. STONE DATE: to/26/h? APPROVED: g DATE: 5[gy/gg i "/ \\ r

REFERENCES:

~ r V06TLE PROCEDURE 17035-1 ANNUNCIA10R RESPONSE PRocFDURES (REV 3) h ) -mm;/ ,-W%- =_ - -Mw w W J N n : q % ~. --; -- .= %wohy'- ,mut4% hs., j 4 t L ',,,,,,,..-.9".'*t ~ i q$" ... v# L M. /j% ~Ndf "'I"g g i 7, '4_ J- 'p.a W N l ~ s '" [ [li g'j & % ~

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e NL-!U-ll2n2-00-C-003 Respond to Diesel Generator Fuel Oil Alarms PERFORMANCE OBJECTIVE Given :~ at an alarm has annunct ated, respond to the Diesel Generator (DG) Fuel Oil s', stem al ar m. The alarm concittens must be investigated, and co-recttve action taken. The DG Fuel Oil System must be restored to normal operating conditions as scan as possible, with the appropriate alarm (s) cleared. All communication and activttles must be performed in accordance with current, approved procedures, ,1 NF OA MAT I ON ~ The 5th annunciator alarm windcws that are applicable to the Fuel Otl System for each diesel generator (DG) are: 1. DGlA LOW PRESS FUEL DIL alarm 2. DGI A HI DIFF FREES FUEL DIL FILTER alarm 3. DGl4 FUEL 01L INJECTION LINE EREAk alarm 4 DG14 HIGH LEVEL MAIN TANK alarm 5. DGIA LOW LEVEL MAIN TANK alarm 6. DGI A HIGH CR LOW LEVEL DAY TANK alarm The alarm windows f or this system are located in two places 1. On ALB35 in the DG control panel in the main control room (CR) 2. On the DG annunciator panel an the control panel in the DG butiding Indications on the engine control panel associated with the Fuel Oil System include: 1. DIFF PRE 95 FUEL OIL FILTER pressure gauge This gauge indicates dif f erential pressure. It shows a hfcher than normal reading whtikI4pdicates clockage in the fuel oil it1ter. The dif f erential pressure' fuel oil pressure gauge should read less than 15 psid. 2. FUEL DIL PRESS gauge With the engine running, the feel all sucply pressure gauge indicators should road within the range s net:atec in 13145-!. Pressure indicators 1-PI-19102 f or train A, and (-F I'1413! f or train D, art located on the DG panei. 3. DAY TANK LEVEL gauge This is a push-to-read gauge wit 9 e cusnt'utton L seath it, which is located en tne engine control ;# e.. 'e read the level indicator on the' gauge, depress the pushbut+- eta at down.

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NL-lu-II 00-00-C-003: Respond to Diesel Generator Fuel Oil Alarms p-01 W A LOW FRESS FUEL DIL ALAFM The possible causes f or this alarm include a clogged f uel all strainer or filter. f ailure ci the engine driven f uel pump, the pressure regulating 'alves + n11ng cnin, cr a pipe break in the system. Masalignment of valves. the fuel all day tank running empty. se the isolation valve between the cay tam and engine inadvertently being closed, can,cause this alarm'. ACFNOWLEDGE THE ALARMS Actlanc, 1 ce initially taken by the LO in response to one or more of these 81 arms are addretsed in Frocedures 17035-1 for the A train and 170 8-1 for the B train. The LO will contact the OAD after the alarm is acknowledged in the c;ntrol rocm. These alarms also appear locally at the same time. An alarm horn will sound icr each of the six alarms. In resoonse, silence the alarm by pressing the SILENCE pushbutton. With cultiple alarms on the annunciator canel, it is helpful to make note of the alarms. On a notepad, first write down the alar ms which are already illuminated and the alarms that are flashing. Then, acknowledge the alarm by pressing the ACKNOWLEDGE push button, which is located on the engine control _ panel. This will cause the appropFlate annunC14 tor window to Stop flashing, and to remain lighted. Wnen the REEET button is depressed, note all the alarm windows which eatinguish. Taking notes before and after depressing +he reset button will assist in the investigation, ensure checking all associated alarms, and ala in understanding the Interrelationship between the varicus alarmu. INVESTIGATE THE_ ALARM (Covered individually under TAKE CORRECTIVE ACTION) TAVE COPRECTIVE ACTIQN When dispatched, perform the following:

a. Check day tank level on local LIT 4018.

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b. Verify low pressure'actually exists ov coserving the local engine panel gauge.
c. Check for HI DIFF PRESS FUEL OIL riL,ER alarm. If it has also alarmed,

~ confirm this condition-by checking tre Lccal engine control panel gauge. Shift to the standby filter if necercers.

d. Check the fuel oil strainer differec :#1 cressure gauge at the engine front (PDI-19102). To swap the fuel m.

trairer to the standby strainer, move the handle sicwly to select the e -:2, strainer. -The diverter valvir.g is arranged so that full fluid flow x,t at nad while transf erring f rom one strainer to the other. Check tre , -erectlal pressure gauge before and after the transfer, and initiate an - 3 ele element.

e. Check for paping_ leaks.

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-... ~ tJL-IU-II:02-00-C-003: Respond to Diesel Generator Fuel Oil Alarms

f. Check that the day tank to enaine isolation valve (1-2403-Ua-031) is open. Thi s valve is normally lock ed open, and 19 located beneath the grating.is the day tank roem. With this valve isolated. the engine will shut corn, and 15 anoperable.
g. If the angine is still running, check that it appears normal, and its.

coupling appears to be turning. With a sheared coupling, the engine will j nave shut cown. I

n. The alarm could ne caused due to the low pressure tr'ansmitter's root valve being isolated.

LOG THE ACTIVliY The activity must be loggea in the DG log book. This must be cone after tne cause of the alarm 15 determined and action is tak en to correct the concitron causing the alarm. 1 D-02 DGIA HI DIFF PRESS FUEL DIL FILTER ACKNOWLEDGE THE ALARM The LO will contact the OAO af ter tne alarm is act.nowledged in the control room. These alarms also appear locally at the same ttms. An alarm horn will sound for each of the six alarms. In response, silence the alarm by pressing the SILENCE pushbutton. With multiple alarms on the annunciator panel, it is helpful to make note of the alarms. INVESTIGATE THE ALARM Check local indications, where applicable, to verify that the condition which caused the alarm attraally extsts. Determine whether the conditto.1 1s holding steady, changing, or worsening. Determine how quickly the condition is changing. Check related systems which can be causing the alarm condition or can be af fected by the alarm cor 11 tion. Relate all findings to the CRO. Perf orm -any actions as directed by the CRO. This alarm is caused when.gte in-serv:ce fuel filter clogs (to 20,psid). j. The engine will be _ running <when this alarm occurs, l-When dispatched, verify the alarmed ccndition ar.tually ertsts by verifying the dif f erential pressure on 1-PDI-17:50 on the engine control panel. Also j check PDI-9094 at the engine front ga.ge :anel. Check that the root valve l for the differential pressure switch ; ;23-19190 1s open (1-2403-A4-760) is open if all else appears normal. TAVE CORRECTIVE ACTION -The stancby fuel oil filter can be ci to service with the engine 'r running. Procedure 13145-1 specifies

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I 1. Determine which filter is in ser. .ing the handle position. ) % =.

i l l 1 NL-!U-11:0?-00-C-003; Respond to Diesel Generator Fuel Oil Alarms r i 2. Ustng a small crescent wrench, loosen the bleed plug on top of the standev Juel oil filter. Only loosen it slightly. since the filter will be pressyrt:33 soen. 3.. Slowl/ reposition the selection handle en the filter to the mad position. 4. Bleed air feca the standby filter tnrough the bleed plug. then tighten the plug. 21cwly position the selection handle until the new 'ilter is in f service. 6. Cneck differential pressure. If still high, reposition the handle te mio posttien so both filters are in service. 7. Report completion to the control room operater, and ina tt ate an PWO f or the old filter. LOG TH M GH VITY The activity must be logged in the DG log book, This must be done after the cause of the alarm 15 determined and action is t46 4'n to correct the condition causing the alarm. DGIA FUEL DIL INJECTION LINE BREAK ALARM i ACPNOWLEDGE THE ALARM You must acknowledge the alarm condition by depressing the ACK button on the DG panel. The DGI A FUEL OIL INJECflON LINE EREAK alarm is located in window. 003 on the annunciator panel. When the alarm registers, it is flashing. After the ccndttion is acknowledged, the light mill remain illucinatred but will be a solid light. INVESTIGATE THE AL ARM This = alarm indicates that a break has occurred on a high pressure fuel injection line (between injection pump and injector). Each injection line is shrouded -with a second lino, and leap 4 are contained by the second line, and routed to.the collection tank. A collection apparatus will direct tne lesking fuel oil down to a, chamber. fD1is chamber is located on the base of tre atesel engine on the sane side as the lube oil hest exchanger ( H X ).. T9e function of this chambar is to a. collect leaking fuel' oil. -c. allow the level'to build in the enamber. l -c. cause the fuel oil injection line creak alarm to occur when level in t: the chamber builds to its setpcirt. I d. overflow away from the engine inte :ne waste sump in the diesel l building. l l _ Look f or visible leaks and be alert -1,9 smell of fuel oil. Unscrew threaded cap.on tank top, and obserse .* ! to confirm the alarm. I l 3-4

o NL-!U-ll200-00-C-00 n Respord to Diesel Generator Fuel 011 Alarms TALE CCRRECTIVE ACTION Attempt to cetermine which line f ailed. Visually inspect the tqjection f uel pumcs and injection lines at the cylinder heads to try to determine which line 4 at les. The leaking inf ection Itne can be detected Dy f eeling each of the. + 9 :44 lines between the bottom of the injection line (near injection cump) anc lea ~off header. The leaking I tne(s) will be hotter than thc%e not lev 4nq. CAUTION: The tuel oil 15 under high pressure in the injector suDply line. Recor t your f indings to the control room cperator. LOG THE ACTIVITY Log the activity in the DG log book. This must be done after the cause of ~ the alart is determined and action is laten to correct the conditten causing the alarm. DG1A HIGH LEVEL MAIN TAN > ALARM ACFN0QECGE THE ALARM Acknowiecge the alarm condition by depressing the ACL button on the DG panel. The DGIA HIGH LEVEL MAIN TANK alarm is located in window D04 of the annunciator panel and occurs at a level of 78,500 gallens (increasing ). JNVESTIGATE THE AL ARM If the fuel oli tank is not being filled check local LIS 9022 and LI 9024 and report the readings to the control room. TAVE CORPEgT!VE ACTION If the diesel FOST is being filled, nottfy the apprnpriate PEO. who as essisting in filling the tank. The filling operatton must be terminated. LOG THE_pCTIV!TY Log the activity in the DG log book. This must be done after the cause of the alarm is determined and &ction is taken to correct the condi(qon causing the alarm. If the alarm was due to an instrument malfunction, an Mb0 will be initiated. DGlA LOW LEVEL MAIN TANK ALARM $CVNOWLEDGE THE ALARM Acknowledge the alarm condition by cepressing the ACK button on the DG panel. The DGIA LOW LEVEL MAIN TANK alarm is located in window DOS on the annunciator panel and occurs at 68.000 gallens cecreasing. INVESTIGATE THE ALARM

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NL-IU-ll:00-00-C-0001 Respond to Diesel Generator Fuel 011 Alar ms Verify low f uel oil level by reading local level indicators LIS 9022 and L1 90:4A. This will occur after the otesel engine has been run for an extensive ceriod of time without being refilled, out also could occur from a leai ?-;n the tank or possibly a false alarm from a level switch malfuncit;n. If the cause still has not been determthed, check the fcllontrg Fuel C1L Transfer Systein valves in the DFG storage enclosure valse pt: to ensure they are closedt s. 1-240?-U4-056 c. 1-2403-U4-057 c. 1-2400-04-059 a. 1-:403-U4-061 Tc)E COR4ECTIVE ACTION F ol l ow the directives frcm the CF0, which aill include refilling the FCST f rom a f uel oil celivery truck. Once the level has been restored to above the low level alarm setpoint, reset the alarm. LOG THE_ACTiv!TY Lug the activity in the DG log book. This must be done after the cause of the alarm is determined and acticn is taien te correct the conditten causing the alarm. DGIA HIGH CR LOW LEVEL DAY TANK ALARM ACFNOWLEqGE THE ALARM Ac6newledge the alarm condition by depressing the ACK button on the DG panel. The DGlA HIGH OR LOW LEVEL DAY TANE alarm is located in window DOS on the annunct ator panel. When the alarm registers on AL8 35, it is flashing. Af ter the condition is act nculedged, the light will remain illuminated but will not flash, isetpoints: high - 1. 220 gal., low - 680 gal.) s INVESTIGATE THE ALARM If the DFDST pumps (s) are running ana tne :cntrol room level gauge indicates a low level, the problem may be a plugged pump discharge strainer cr possibly leakage in the system. Check that the pump discharge valves 1-:4-:-t4-045 and 048 are locked open, and header discharge valve (to the 03< t ar 6 > 1-2403-04-028 is locked open. Check that the pump discharge which s: t' cough tne ficw indicator + el-19104 (for pump testing) is isol=t c a 1 n o ed. TAVE COFRECTIVE ACTION 3-m l 4 e

+ NL-1U-ll202-00-C-00 ; r,espond to Diesel Generator Fuel Oil Alarms Report finritngs to the LO. Perf orm actions as directed by the LO. This may include, out is oct linited tot a. menatoring the levt1 locally. b. nett iving the LO when to start /stcp the transfer pump. manually. t c. reut na r.g t o constant communication with the LO. d. reading aressure indications locally, downstream of the DF0 storage tank cump di3 charge stratners. Corrective action, if a low level eu sts. consists of: a. reading P1 7050 downstream from pump 1. b. reading Pl 4004 downstream from pume II. c. ta6 ing the appropriate cressure indication reading, dependent upon whicn transfer pump is running, and relaying it to the LO. d. performing actions an directeu by the LO. The LO may swap pumps. and may direct monitoring of the pressure gauges before and after swapping. t,0G THE ACTIVITY Log the activity in the DG log boof. Tnts must be done after the cause of the alarm is determined and action is taber. to: correct the condition causing the alarm. 39

j-I NL-lu-11202-00-C-003: Respond to Diesel Generator Fuel Oil Alarms FERFORMANCE GUIDE Follow tnese steps to respond to the DG Fuel Oil System alarms. 1. Ack nowledge the al arm 2. Investigate the alarm 3. Tale corrective action 4 Log the activity NOTE: The above f our per f ormance steps must be completed for each ci the followinq six alarms. 1. DG1A LOW PRESS FUEL O!L alarm 2. DG1 A HI DIFF PRESS FUEL OIL FILTER alarm 3. DG1A FUEL OIL INJECTION LINE BREAK slara 4 DGIA HIGH LEVEL MAIN TANK alarm 5. DGIA LOW LEVEL NAIN TANK alarm 6. DG1A HIGH OR LOW LEVEL DAY TANK alarm m

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i NL-!U-!!202-00-C-003: Respond to Diosol Gansrator Fuel Oil Alarms i D. SELF-TEST Before cr::eeding to the Task Fractice, answer the following questions. 1. lit is helciul to write down the illuminated alarms: -a.- uefore pressing the ACK button-b.- after pressing the RESET button c. both ef the above times d. nE4.her of the above times 2.- Should ti.h fuel oil pressure regulator f ail open, the low pressure fuel oil alarm will occur. a. True-b. False 3. Fuel Oil System indications (gauges) on the engine r otrol panel include the _. the and t,e 4. The LOW LEVEL MAIN TA.*!K alarm will probably indicate after

5. - When: the HIGH OR LOW LEVEL DAY TANK alarm is illuminated, che:k f or the level of by b

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i NL-lU~11202+00-C-003: Roepond to Dieaal G:n'srator Fuol Oil Alerms i ANSWET:5 l 1. c. icth of the above tires i ^ 4 2. a, true i 1 l 3. a. DIFF FRESS FUEL OIL FILTER pressure gauge i b. FUEL OIL FRESS gatge c. DAY TANK LEVEL prescure gauge I i 4 the diesel er,gine has been run for an extensive period of t1rne without being refilled 5. a. fuel oil day tank gauge b. depressing the pushbutton on the engine control panel ' k gg tk +$L 1 l A i 3"lO

i .: I 4 . l .NL-!U-11202-00-C-003: Rwspond to Diesel Generator Fuel 011 Alerms I 4 1 TASV F'RACTIGE Before proceeding to the Perf armance Test, complete the following Task j. Frattsce exercise, 1. Review Frocedure 17035. Be sure that you understa'nd all precautions, liinitations, and steps associated with responding to DG fuel oil . alarms, ?. Take this instructional unit and Procedure 17035 to the diesel generator cuilding. De sure that you can locate all local components and instrumentation associated with responding to DG fuel oil alarms. 1 In the diesel generator building, walk through the task cf responding 4 j to DG fuel oil alarms. If possible, have a fellow trainee evaluate your performance using Procedure 17035 and this instructional unit. i a-Z I l u 5 i .'*w. 7 s ~ a i l-; i' 4' 3-1; i -.i. ~ C -. __.,y ,..,i y

s ki j-6: NL-lU-ll202-00-C-003 Respond to Diesel Generator' Ft el Oil Alarms 4 FEEDDACV ON, TASK FRACTICE 1.. If you have any questions coout the precautions, limitations, or steps in Frocedure.17035, ask your instructor. 2. You should have been able to locate all local esmponenta and instrumentation associated with responding te DG fuel oil al arms. If you had any dif ficul ty, dsk your Instructor f or help. m 3. - You should have w&lked through the steps necessary to r espond to DG f uel-oil alarns.

f you had any difficulty, re-read the pertinent sections of this instructional unit and the procedure.

Resolve any questions with your instructor, w 9 4 4 m. P 2 ~ t' w~ e W t. Ni : h 3-12

-. ~. - -. ~. o Georglalbwer i i VOGTLE CLECililC GFilEllAVlttG PLlT La / f j TMillllii IfSSIII PINI EMEAGENCY DIESEL GENERATOR AUXILIARIES llllf'lllER: NL-LP-1 202-01-C l'i ll E rutt att svSitn OUTSIDE AREA OPERATOR REV IS itills i pg ggg g ggggg, G.D. STONE (IAIEl s olives ~Al'Pltl1VEJJ.v T 7ih [fdwM IIAIE f lllSildlCIIM Gllllfl.llfSt / .ESSON FORMAT A. Lecture with Visual Aids II. MATERIALS A. Slides and Slide Projector B. Transparencies and Overhead Projector C. Dry Erase Board and Markers III. EVALUATION A. Written or Oral Exas in conjunction with other Lesson Plans lV. f,EMARKS A. Perforeance-based instructional units (IUs) are attached to the lesson plan as student handouts. After the lecture instruction should be provided for the attached instructional units. The instructor should be available to answer questions that may arise concerning the IU eaterial..After instruction on the IU, the student will perform, steulate, observe or discuss (as ideltified on the cluster signoff criteria list) the task covered in the instructional unit in the presence of an evaluator. 1 i A ozamsc[ VIAS ~ER COPY

l NL-LP-li202-01-C l. PURPOSE STATEMENT: UPON COMPLEil0N OF THIS LESSCN, THE STUDENT'WILL HAVE AN UNDERSTANDING OF THE FUNCTIONS AND OPERATIONS OF THE FUEL Olt STORAGE AND TRANSFER SYSTEn, AND GF lHE SK!D-MOUNTED FUEL OIL S,YSTEM ll. L.IST OF OBJECTIVES: 1. Stat,e the f unctions of the Fus! 011 Stor age and Transf er Systes. 2. Beginning at the DF0 day tank, list the correct sequence which fuel will pass on its way to the combuction chambers, a. DF0 day tank i b. Duplex strainer c. Fuel oil pump (engine-driven) d. Duplex fuel filter e. Supply header 3. State the capacities and functions, and number of the following Fuel Oil Storage and Transfer Systes components: a. Diesel fuel oil storage tanks h. Diesel fust oil transfer pumps 4 State the functions and describe the basic operation of the following fuel oil components: a. Eductor b. Shrouded line leakage tank c. Pressure-regulating valve adI. d. Injector pueps e. Injectors f. Engine-drivan fuel oil pump g. Fuel att strainers ~ h. Fust all filters 5. List the electrical power supplies for the fuel oil transfer pusps for each energency diesel gene,rator. 6. State the start /stop permissives for the DB FOST pumps including the day tank level program, and state the location of the control switches. 7. List the instrumentation in the fuel oil storage building from which a local reading can te taken. B. List two places DF0 day tank level can be read in the DB building. 9. Make a drawing of the Fuel Oil Transfer Systes for one unit, 4 i 2

NL*LP-il203-01-C fl. l.10T OF OltlliOTIVlifi includleg DF0 storage tanks, DF0 day tanks, puaps, and piping to and froe the Austilary Boiler FOST and the other unit's tanks. Indicate the correct positinn for locked valves to achieve.the following flowpathst a. Socirculation of DF0 Storage Systee b.- Supply Train A day tank free Train B 08 FOST c. Supply Train 9 day tank f roe Train A DB FOST d. Transfer fuel oil free DS FOST to aux boiler FOST 5 s. Normal aligneent, 08 FOST to its day tank 10. State the following about water in the Fuel Oil Systent a. Probless caused b. How to check for it, c. How to prevent it 11. State the actions necessary for internal and external. contact with fuel oil. 12. State two safety precautions which are observed to prevent or .eitigate the consequences of a fuel oil fire during f uel oil transfer. ~ 13. List the safety equipment to be, worn when transferring fuel oil. -14. State how cil storage areas are to be postas during fuel oil delivery.

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NL-LP-il202-01-C ~ RiiFERENCES : 1. Plant Vogtle Procedures 13145 " Diesel Generator * (Rev B) 13146 'D6esel Generator Fuel Oil Transfer Systee* (Rev 1) 14980- ' Diesel 6enerator Operablitty Test' 13427 '4160 VAC 1E Elertrical Distribution Systen*

17035, Annunciatcr Response Procedures.(Rev'3)
17038, Annenciator Responss Procedurss (Rev 3) 2.

Technical Specifications: 3.8.1 Electrical Poner Systees, AC sources 3. ' Standby (Emergency) Diesel Generator' Vogtle Training Text Chapter 16C 4. Plant, Manual Chapter 23 (Rev 0) 5. PLIDs, Logics and Other Drawings Piping and Instrument Diagrass 114DB170-1 (Rev 21) 114DB170-2 (Rev 21) Vendor Drawings A14AK01-27 (Lube 011) A14AK01-26 (Jacket k'ater) A!4AK01-29 (Starting Air) A14AK01-28 (Fuel 011) Control Logic Diagrass: IX5Dh107-1 (LB Fuel Oil Systes) (Rev 6) II5DN107-2 (D0 Unit Engine) (Riv 3) !X5DN107-3 (Generator) (Rev 2) Elementary Diagrams 1X30-BH-603C (Rev 2) IX3D-BH-803D (Rev 11 113D-BH-603E (Rev 21 113D-BH-803F (Rev 2) tX3D-BH-6038 (Rev 1) 1X3D-BH-803H (Rev 3) 1X3D-BH-6031 (Rev 2) II3D-BH-60$J (Rev 3) One Line Diagrees 113D-AA-A01A (Rev 12) 1X3D-AA-K01A (Rev 71 6. Vendor Manuals A14AK01-509 (Rev 0) AX4AK01-510 (Rev 2) A14AK01-563 (Rev 6) 7. FSAR: B.3, 9.5.4, 9.5.5, 9.5.6, 9.5.7, 9.5.9 l 4 1 ~

NL-LP-11202-01-C ~

REFERENCES:

8. CAP Cosettaants: SOER 63.006

  • Unavailability of traergency poner caused by diesel and breaker unavailability' SOEP 83.001 ' Diesel generator failures
  • SER 84.042 "Systee $nterdependency overfightt results in loss of redundant saf egua*ds f unctions" IEN 85.028

" Partial loss of AC power and diesel generato~ degradation' IEN 04.069 ' Operation of emergency diesel generators

  • OMR 297

' Grid high voltage and undervoltage trip relays contribute to EDG output breaker lockout

  • NUREG 1216.000 'Saf ety evaluation report-r elated to operability and reliability of energency diesel generators sanufactured by Transamerica DeLaval Inc.' (Not an OAP action ites, but a training cosaltsent) 9.

INSTRUCTIONAL UNITS: NL-!U-11202-C-001 Fill the ruel Oil Storage Tank NL-lu-11202-C-002 Transfer Energency Diese! Generator Fuel 011 to the Aux Boiler Fuel Oil Storag6 Tank NL-lu-11202-C-003 Respond to Esergency Diesel Generator Fuel Oil Systes Alaras 10. TRANSPARENCIES: NL-iP-11202-001 Train A - normal NL-TP-11202-002 Pareal A!!cnnent DFOST's to Day Tanka NL-TP-11202-003 Recirculation NL-TP-11202-004 Supplying Train A Day Tank from Train B DFOST NL-TP-11202-035 Supplying Train B Day Tank f rom Trstr. A DFDST NL-TP-11202-006 Transfer of Train A DFOST contents to Aux Boiler FOST NL-TP-11?02-007 Basic Fuel Oil Components, Day Tanks to Injectors NL-IP-il202-008 Typical Fuel injection Systen NL-TP-11202-009 Injector Pump Plunger Operation NL-TP-11202-010 Exploded View of injsetor Pumps NL-TP-11202-011 Typical fuel injection Systens tcross section) NL-TP-11202-012 Eductcr 11. Student Handouts NL-HO-11202-001 Energency Diesel Sentrat or Fuel 011 Storage, Transfer and Supply I l 5

NL-LP-il202-01-C ~ lli. LESSON OUTLINE: N_OTES I. INTRODUCTION A. This lesson describes how the Fuel Oil Systes functions an providing fuel oil for combustion by the Caerger.cy Diesel Generators For convenience, the lesson is separated into 1. Fuel 011 Storage and Transfer 2. Fuel 011 injection Systes B. Present the Objectives in handout LESSON PRESENTATION A. General Overview 1. Purpose of Fuel Oil Systes Stores and delivers fuel oil toc combuction a. by the diesel engine 2. Functions of the Fuel Dil Systes a. Store enough fuel oil to allow at least 7 Objective i days E06 operation with ESF loads (plus auditional amount for periodic testing) b. Transfer fuel oil from the DFOST to the day tank Provide a continual cupply of f uel to the c. engine-driven pump d. Provide fuel to the inje: tor pumps e. Clean the fuel oil f. Inject fuel oil into each cylinder for combustion B. Fuel 011 Storage and Transfer 1. Four independent fuel storage and transfer systees - one per DB 2. Each consisting oft NL-TP-il202 C-0^f a. Fuel oil storage tank 11 Filled by truck connection b. DF0 Storage tank pumps - 2 6

NL-t.P-11203-01-C f Ill. LESSO...-N. OUTLINE: NOTES ~ 1) Sosetises called trals'er pumps ~ ~ c. Supply and return piping 1) DFOST to day tank 2) Day tank overflon to DFDST 3) Trains isolated by locked valves 4) Provisions for aligneents Aux Potter FOST Opposite train Other unit (later - now capped) d. day tank 1) One prr engine 2) In roon in DG building 3) Level maintained by DFOST pueps C. Cospunent Description 1. DG fuel oil storage tanks Objective 3a al 80,000 gal. capacity each b) One per diesel /two per unit c) Function: Store enough fuel oil for approx. 7 days of operation of the safety-related loads, assuring a loss of offsite power End Objective la d) Filled fres truck fill connection ' Students noe 114D0-170-1 or -2 !) 3' quick.,sconnect 2) Basket >" t':.ar on fill !!ne e) Vented 1) Flow converter on vent line 2) Two vents to outside - roof and side of valve house f) Dewatering provisions 1) Water drain pipe from isove tank to 7 7

WL-LP-il202-01-C yi. LgSSON 0.UTUNE: NOTES low point 2. OF0 Storage tank Pumps a. Functioni transfer fuel oil free DFOST.to Objectsve 30 say tank b. Nutter of pumps - 2 c. 25 gpe, 95 ft hkad d. Pumps in tank, actors on tank (1.$ hp) e. 400V MCC 1APF 1) Both Unit i Train A pumps (OD! and 002) 400V NCC 1EEF 2) Both unit Train B pumps (003 or 004) f. One pump approm 3 tiaes naw. 00 consusption rate 9 Auto Start / Auto Step by dar tant level, and alternate with each e4keup cycle h. Unit 2 DFOST pump controls Unit 1/ Unit 2 Difference 1) A 1 rain same as Unit 1 2) B Train different al Local /Reente transfer switches to transfer control out of CR in case of fire b) In ' REMOTE

  • operation f rom GEABI STOP/Auf0/ START c)

In ' LOCAL' pump will run in auto made only 3) Fuel oil day tank a) Functions pron des a continual No D.C. supply of f uel to the engine drain Pr i si ng pur.p ne c e s s.ir y pump (1) Posittve sucticn head - tank elevated 4t;.e ;cwer b) Located in DG t ;l::na, in a fire-rated roce A

NL LP-il202-01-C Ill. LESSON OUTLINE: NOTEE c' 1250 gallon capacity d) How long DS will run without askeup to day tank 11) .0679 gal /twh, or FSARQ 430.16 as evaaple (2) Approutaately 1.'6 hr t s 700KW, if at 400 gal with no i sakeup 1o50 gal sin Tech Spec vol) (3) Time longer at lower lands and if day tank fuller initially (4) DG inoperable il day tank sakeup isolated or not available el Unit 2 day tanks can be d'ained Unit 1/ Unit 2 back to.0ST Difference () Unit i day tanka drained to floor drains D. Instrusantation and Controls Fuel Oil Storage and Transfer Objective 6 begin 1. Day tank level control assuming 00 is running CR switchst in AUTO a. F.rst DFOST pump starts: appros 621 level decreasing b. First pusp shuts offs approx 921 level increasing c. Second pump starts: 1) When level drops to approx 621 again 2) Alternator swaps pueps with each cycle d. No level alaras when pumps normally cycling the level s. Low low day tank level 11 Second pump starts f. Running pump dis-harge pressure low for 10 seconds - second pump starts _--------------L--------

NL-LP-il202 01-C 111. LESSON OUTLINE: NOTES ~~ g. DB HIGH OR LOW LEVEL DAY TANK alare 1) Continual roca annunc. 2) DG panel annunc. 3) HIGH setpoint above pump shut-off 4) LOW setpoint slightly below second pusp start, but still above Tech Spot aintaus h. + isch Spec minleum 11 52% day tar.k level (650 gal.1 2) Read on L1 9018, 9019 1. Location of DFDST pump switcht? 1) Control Roon 0-EAB, near DO controls 2) No local control switch Objective 6 - evid 2. Fuel oil storags butiding instrumentation Objective 7 See PtlD 170-1 a. Flow indicator - DFOST pump return to DF0$T (testing) 1) (FI 19104, fr. A, 19105, Tr. B) b. Puso discharge pressure gauges c. DFOBT level indicating switch 1) (LIS-9-22 Tr Al LIS-9023 Tr. Al 3. Day tank level gauges (local) ., Objective B a. Level indicating transantter in day tank roca (LIT 9018, Tr. A, 9019, Tr B) b. ' PUSH-TO-READ' level gauge on DSL control panel 'bubblar" type - uses diesel control air 4. Control Roos gauges a. DFOST, 0-1001, each stesel b. Day tank, 0-1001, each ciesel 1 10

Nl.-LP-il 202 ' !-C s j ~ lil. LESSON OUTLINE: NOTES 5. Alaras (both Control Roos ano Local) ~ s. ' CONTROL SW NOT IN AUTU" I !) DFOST puap(s) c.s. not it. AUTO l 2) Other switches cause alare, also J b. 'HIGH OR LOW LEVEL DAY TANK' 1) Dual function alare 2) Should not occur if pumps operating normally c. ' LOW LEVEL MAIN TANK

  • i Alare setpoint above Tech Spec sinteur, d.

'HIGH LEVEL NAIN TANK' E. Operatic.is - Fuel Oil Storage and Transfer 1.

  • tiling DFOST n.

Procedure 13146-l Discuss procedures with students t b. If FOST level 681 or lose, its day tank 13146-1 aust be aligned to receive' free opposite train's DF0$f c. Te6h Spec - 76% (68,000 gal) einiius d. Saapling of truck tank Filling begins gjttt saapit checks DK

e.. Accomplisk fuel oil retelving checklist L

i f. Poselble to gravity feed talon) or pi4ep, l using truck's pump 2. Safety Precautier.s during fillings c a.- Posting area for fuel oil delivery Objective 14 1) 'NO SMOKINS OR OPEN FLAME 5* working l tape set up at least 23 feet free tanker fill ccinections, and enclosing tanker 21 Brounding tanker trucks to sta. ground .There is a ground cable to right of outside stairs e

.~ J. NL-LP-il202-01-C Ill. L.ESSON OUTLINEi NOTES c. Mitigating Ftras: Objective 12 !) Ensure fuel truck is grounded 2) Use of drip pans 3) Fire estinguishers available (At least two 20 lb or cheatcal ext:1guishers 4) Ensure drtpped fuel oil disposed of 5) Post the area with warning signs Area also roped o ' DANGER - FLAMMABLE NATERIAL - NO SM0 KIND, S(' ARKS OR OPEN FLAME WITHIN 25 ft. 66 Fuel oil should not I;e transferred free trucks in electrical stores, high ntncs (50 aph), tornado warning, hall stores 7) Hotify SS of spillage of any fuel til y c. Actions necessary for contact with fuel oil Objective il 11 Soap and water if esternal 21 Notify Safety Depaetaent if internal (ingestion) Warning in 00261-C PROLONSED CONTACT W11H SKIN MAY CAUSE OPEN SORES OR BURNS 10 APPEAR ON THE SK!N o. Orcuading 1) Prior to connecting fuel ail transfer hose 21 Grounding strap shall be connected between piping to permanent storage tanks, tank trucks, and to ground 3) Wire-covered hose may be used otherwise Personal protective eautpment worn by Ref: 00?al-C e. individuals transferring fuel cili

  • Should' be woen 1)

Full force shield, ;cgales, or safety Objective 13 glasses A

7. l a i ) NL-LP il202-01 C y 6 ~ - - - i 111. LESSON OUTLINE: NOTES i ~~~ 2) Rutter gloves I 3. Sampling day tank for water Objective 10b 4. Required if DG has run for one hour or greater, or every 31 days on a surveillance ) 4 ' b. During that hour, the DFOST pumps say have { pumped fuel contathirg solsture c. Visual check of 0FOST drata F.O. d. Ghtain clear container ti liter or greater) Drain small amount into container via day 00 Operability tank drain. If water is found, repeat Test 14980 saepting until no water is found. e. Water-in fuel all systre Objective 60s 1) Probleas caused 5 .Displats fuel oil, starving engine 23 Prevented by: Dewatering, or draininn from tank Objective 10c, bottoe t in-ing Chweistry Department nasple any j flat 911 going to the tanks h 4. Major flowpe,ths of Fuel Oil Storage and Transfer Systee + a. Students aust be able to draw basic flows Objective 9 b. NJreal alignment ,NL-1P-il202-002 il Crosslias between trains closed / locked 2) No valves open to Aun Boller SOFT or Unit 2 3) Each day tank supplied from ita DFOST c. Recirculation 1) Control Roon starts one pump - sanual NL-fP-il202-003 l' -2) Day tank fills, c er41o 6 to its DFDST 1. l d. Supplying Train: A day tant free Train B NL-TP-11202-004 L DFOST 13-

NL LP-il202-Ol-C 111. LESSON OUTLINE: _ NOTES 11 Train A DFOST or pumps not ava41able 2) frain crosstle valves open 31 Puap free Train 9 DFDST to Train A day tank 41 Train 9 day tank should overflow Si Manually start /stop pump to maintain Train A day tank level I 5) Done only in energency or low DFDST level 7) Helps keep sediment from bein0 pumped to day tank e.- Supplying 1 rain 6 day tank from Train A DFDST in Same concepts as-above f f. Transfer fuel oil from DGFOST to Aus Boildr NL-1P il202-006 FOST !) If DFOST contents have degraded 2) Day tanks isolated to transfer 3) DS inoperable +- FUEL INJECil0N r A.- General Description 1. Each cyr.inder fitted with individual fuel injection pump and injection notale 2.

Engine-driven pump takes suctica from F.O. day tank via duplenistrainer and filter to ensure citantinosa 3.
Sequence of components from-day tar.k 4-e,

-0bjective 2 4. DF0 day tank b. Dupler strainer NL-fP il202-007 c. Fuel oil pu6p (engine drivent 'd. Duplex fuel filter e.- Supply header ~ .1 4.

l NLat.P-11202-01 C l 111. LESSON OUTLINE: NOTES ~ f. Injvetor pumps and injection \\ g. Combustion chambers B. Component tescription 1. Engine-driven fuel oil pump s. Driven by engine gearset b. Internal pressure relief 70 psig Mounted on sees drive as the overspeed c. . trip device d. Bear + type pump e. Function Objective 4f 1) Provide pressurl ed fuel oil to the injection pumps when the engine is running f. Basic operation i 1) Pump suction below day tank level - slight positive head 2) Pressurlass supply hsacar when engine is running L 3) Engine inoperable without it

2.. Pressure-regulating valve d.

De3Criptiont 40 pstg b. Function Objectise 4c t) Regulate. supply header pressure c. Baste operation 1) FuelTpressure provided by engine-drtven pump i 2) Rolleves to day tank 3) if falls open tion Ivel pressurst, loss of D6 Train 4) If falls closed --high twel pressure, -15 . -., ~ -. - - -

4 e NL-LP-t1202-01-C 111. LESSdN OUTLINE: NOTES 00 can run 3. Injector pumps Objective 4d a. Description 1) Constant strche, poultive displacesent plunger pump 21

  • Effective stroke
  • varies output f4L TP-il202-009 high pressure, 3000 psig and greater 3)

One per cylinder 4) located beside each head b. Functiont in-~ Provide _ fuel oil at high pressure to injector 2) Control amount per stroke c. Operationi l) Sprin ploaded plunger soves up, pushed f4L-TP-!(202-009 by camshalt tappet 2) Plunger rides in barrel 3) Rock has ter,th which engags teeth of NL-1P-il202-010 control sleeve - rack direction back- - and-f orth -- .4) Control sleeve rotation also rotates _ lunger p

5) ' Plunger crossbar rides in two slots-la control sleeve
6), Plunger rising' seals off inlet ports, NL-iP-tt202-Oli pressurt aing f uel supply.to ' injector 7)

Injector liendle valve " pops

  • open at appron. 3000 peng, spraying into cylinder 9)

Fuel delivery to-injector ends when helical port opens-up to the spill port 9) Rotation of plunger caused by rotation of control sleeve, in turn caused by change,of rack position 16

~ NL-LP It202-01-C 111. LESSON OUTLINE: NOTES 10)- Rack position determined by output shaft on Woodward governor, via linkage 11) Fuel delivery 'tised" by casshaft to injett when heat of coabustion will ignite fuel 4. Fuel Injectors a. Description 11 One per cylindsr, mounted in a holder, installed in engine head 2) Provided f uel by its injection pump b. Function Objective 4e 1) Atonite f uel as it is sprayed into the cylinder f or more cotplets cosbustion c. Operation 11 Supplied feel pressure lifts internal spring-loaded needle valve -21 Valve lifts at appros. 3000 psig, spraying into cylinder 3) Small amount of fuel oil lubricated needle valve and internals - small-lirs tapoed into injector. 5. Shrouded itne leakage tank a. Description See P410 170-1 il Small reservoir 2) At engine foundation, near barring device and tube oil cooler b. Function' Objective 4b !) Receive. fuel oil leaks free higg pressure fus! injection tubing 21 Level switch to cause alare 3) Shrouded line keeps fuel cil off hot coeponents shoJla MD fuel oil pipe burst l ---o it i

l NL L P ll 202 01 -C ti.l' LESSOU OUTUEE: IlOTES c. Operat E 1) "DG FUEL O!L INJEcil0N LINE DREAA" alare 2) Threaded cap on top - can see hlgh level instde 3) Pr ovisions f or draining leal age t ank b. Eductor hl-1F i l 202-012 s. Description 6) Device similar to an eletter for athing two fluids 5. Function OLltettve 4a 1) Return fuel oil from drip header to the day tank c. Oper ation in Motive fcree from supply header 2) Discharges to day tann-1) With pneamatic shutoff open, picka up fuel oil from drip header 4) If eductor fails (pneumatic shutoff valve did not open on star ti engini still runs OK. Drip rate is small 5) Fual oil puddling at injectcr pump bases can indicate eductor is not working 7 Fuel Strainers a. Description Go>ective 4g 1) Duplex-type, with change valye b. Function 1) Remove fine par t icl es fras fuel oil before it enters singine-artven pamp and filter c. Operation 1) 11 blocked, engine will stall or will l 10

hl-LF-!!?02-01 C Ill. LESSON OUTLINE: NOTES not start 2) High differential pressura across straintr indicates blockage 31

i. o w pressure fuel otl alara 4)

Manually swapped to othet biralner $1 Diff prsst. Chec6ed hourly in leaQ 18885-C 8. Fuel Eliters a. Descr t pt t on ObJettive 4h 1) Durien-type, with change valve 2) located to rtght of engine FO pump. 9ngine front, 'HILC0" brand b. Functico il Rusove finer carticiss from fuel att before it enters the engine for injection c. Operation 1) Fill flow, not bypassed 2) Can be changed to other filter when engine is running 3) Procedures 13145 1, 4.4.6 Discuss with class venting of standby filter aoving handle stonly 4) Indications of plugging High diff, pressure, gauan at engine itont High diff.epressure, gauge on engins centrct panel Low pressure. fuel oil gauge on engine control panel " LOW PRESS FLEL Olt* alara

  • HI DIFF FRE55 ruEL O!L FILTER' alarm If pluggea tedl, e,cugh, engine etsfiring cr :.. i t.

IV.

SUMMARY

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