ML20092G057
| ML20092G057 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 02/28/1990 |
| From: | Brown R GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20092F288 | List:
|
| References | |
| CON-IIT05-048-90, CON-IIT5-48-90, RTR-NUREG-1410 LO-LP-11103-06, LO-LP-11103-6, NUDOCS 9202190613 | |
| Download: ML20092G057 (14) | |
Text
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GEORGIA POWER POWER GENERATION DEPARTHENT VOGTLE ELECTRIC GENERATING PLANT TRAINING LESSON PLAN TITLE:
EMERGENCY DIESEL GENERATOR AUXILIARIES:
NUMBER:
LO-LP-11103-06-C COMBUSTION AIR AND EXHAUST PROGRAM:
LICENSED OPERATOR REVISION:
6 SME:
BRIGDON DATE:
2/28/90 APPROVED:
,2/2P/90 gg-m DATE:
if INSTRUCTOR GUIDELINES:
I.
FORMAT A.
Lecture wLth visual aids II.
MATERIALS A.
Overhead projector B.
Transparencies C.
White board with markers III.
EVALUATION A.
Written or oral exam in conjunction with other lesson plans IV.
REMARKS A.
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Licensed Operator Ob$2ctives for this lesson plan can be found in the Licensed Operator System Master Plan Section 2.3 (Qualification signoff Criteria.'
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LO-LP-11103-06-C
REFERENCES:
1.
Plant Vogtle Procedures:
13145
" Diesel Generator" 13146
" Diesel Gentrator Fuel 011 Transfer System" 14980
" Diesel Generator Operability. Test" 13427 "4160 VAC IE Electrical Distribution System"
- 17035, Annunciator Responso Procedures
- 17038, Antiunciator Response Procedures 2.
Technical Specifications:
3.8.1 Electrical Power Systems, AC sources 3.
" Standby (Emergency) Diesel Generator," Vogtle Training Text Chapter 16C 4.
Plant Manual Chapter 23 5.
P& ids, Logics and Other Drawings Piping and Instrument Diagrams IX4DB170-1 1X4DB170-2 Vendor Drawings AX4AK01-27 (Lube Oi))
AX4AK01-26 (Jacket Water)
AX4AK01-29 (Starting Air)
AX4AX01-28 (Fuel Oil)
Control Logic Diagrams:
1X5DN107-1 (DO Fuel 011 System) 1X5DN107 (DG Unit Engine) 1X5DN107-3 (Generator)
Elementary Diagrams IX3D-BH-G03C IX3D-BH-G03D 1X3D-BH-G03E 1X3D-BH-G03F 1X3D-BH-G03G 1X3D-BH-GO3H IX3D-BH-G03I 1X3D-BH-G03J one Line Diagrams IX3D-AA-A01A 1X3D-AA-K01A 6.
Vendor Manuale AX4AK01-509 AX4AK01-510 AX4AK01-563 l
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LO-LP-11103-06-c REFER 2NCES:
7.
FSAR:
8.3, 9.5.4, 9.5.5, 9.5.6, 9.5.7, 9.5.8 8.
OhP Commitments none 9.
Instructional Unitas none 10.
Transparencies:
LO-TP-11103-001 Leeson objectives LO-TP-11103-002 Intako and Exhaust System e
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1 LO-LP-11103-06-C III. LESSON OUTLINE:
NOTES.
i-I.
INTRODUCTION A.
Overvi'ew 1.
This lesson describes how air is supplied to the diesel engine for combustion, and how it is exhausted from the combustion chambers.
This lesson treats the combustion air and exhaust as a component of the diesel generator system 2.
Present lesson objectives LO-TP-11103-001 Write on board B.
The lesson is presented in the following sequences 1.
Design-bases v
2.
Functions 3.
Component description 4.
Controls and instrumentation 5.
System operation
- 6. - System interfaces t-7.
Summary i
II.
LESSON PRESENTATION A.
General Overview 1.
The purpose of the combustion air and exhaust system is to provide filtered cooled compressed air-for combustion, and a means for removal of exhaust products 2.
System Safety Design Bases a.
The diesel-generator combustion air intake and exhaust system is capable _of supplying adequate combustion air and disposing of resultant exhaust products to permit continuous operation of both diesel-generators for each unit'to 110. percent of nameplate rating.
b.
The diesel gener,or combustion air intake and exhaust system:is designed to remain l
functional during and after a design basis earthquake
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LO-LP-11103-06-C III. LESSON OUTLINE:
HOTES c.
The air intake and exhaust system is designed so that a single failure of any component, assuming a loss of offsite power, cannot result in complete loss of the standby power source d.
The diesel generator combustion air intake and exhaust system is capable of being tested during plant operation in accordance with 10 CFR 50, General Design criterion 18 B.
Functions 1.
The functions of the combustion air and exhaust evotem are tot Filter the air being supplied to the engine a.
b.
Silence air being supplied to the engine, and exhaust from the engine, to minimite noise levels in the building Increase enoine efficienev by compressing c.
the air being supplied for combustion, then cooling it through combustion air coolers d.
Isolate when required on an engine trip by the shutting of the combustion air damper for each bank C.
Component Description and Basic Flowpath LO-TP-11103-002 1.
Intake Air Filter Objective 2 Removes dust and grit from combustion air a.
before it enters the engine b.
Oil bath filter (cycoil type) 1)
109 gallons of oil 2) 24,800 scfm rated flow Located on 2nd level of DG Building in c.
enclosure d.
Mist eliminator pads and rain shield is provided to remove oil and moisture from filtered air 2.
Intake Silencers 7
)
LO-LP-11103-06-C III. LESSON OUTLINE:
NOTES c
a.
Minimite DG Bldg. noise level bI.
Two tubular duct silencers per unit c.
Rated flow 14,030 sefm each 3.
Combination exhaust driven turbine /
centrifugal blower units, on a common shaft b.
Two, one for each bank c.
Exhaust turbine - function is to cause the blower to turn d.
Blower - function,-to pressurize fresh, filtered combustion air in order to put more air.into the cylinders than they would otherwise have, to' increase engine efficiency e.
Exhaust gas flow s 13,500 scfm 4.
Combustion Air Intercooler a.
One for each bank b,
Jacket water cooling medium-Similar to auto radiator--
c.
Removes heat of compression from turbocharged air j
d.
900 gpm jacket water cooling flow-l-
5.
Combustion Air' Supply Dampers Close.on engine trip to isolate supply of-a.
combustion cir-b.
Two - one-per engine bank, cylinder actuator-c.
Spring pressure.to open, air pressure to close cylinders d.
Shut rapidly (less:than approx. 1 second) overspeed response on.an. engine overspeed
- 60. psi regulated' quickened as air from 250 psi air supply.
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ovarspeed and'-
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LO-LP-lllO3-06-C III. LESSON OUTLINE:
NOTES resulting engine damage e '.
Shut slowly on other engine trips (other than overspeed) - shutdown air supplied approx. 3 to 4 through engine pneumatic logic in control seconds panel 6.
Piping and Distribution a.
Intake manifold 1)
Distributes combustion air for supply to each cylinder a)
Rians beneath catwalks, each bank b)
Inlet to each cylinder c)
Has small (1/4") pipe coming from across plate on bottom (front and rear)
(1) Used to blow down intake manifold when performing cylinder moisture checks (2) Water leaks into intake manifold detected by opening manifold drain valves (4 per manifold)
(3) Water indicates jacket water leakage and should be brought to the attention of the USS (4) Water injected into the cylinder during subsequent operations could result in cylinder damage b.
Exhaust manifold 1)
Routes exhaust gases from each cylinder to a common pipo for exhausting to that bank's turbocharger turbins 2)
Exhaust manifolds on engine top, between banks 3)
Exhaust piping after turbochargers is insulated and joins to one pipe 1
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l LO-LP-11103-06-C III. LESSON OUTLINE:
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NOTES
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Exhaust silencer a'.
Minimizes DG building noise level.
b.
One horitogtal silencer per D/G, 29,000 scfm 0 900 F
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c.
Located in room next to air. intake filter D.
Controls and Instrumentation 1.
No active controls (start /stop switches) 2.
Combustion air supply dampers Overspeed - shut rapidly (less than approx.
Objective 4 a.
1 second) 1)
250 poi air regulated to 60 poi 2)
Supply piping more direct than for normal trips b.
Other engine trips - dampers shut more-slowly, approx. 3 or.4 seconds 1) 60 psi air l
2)
Supplied through pneumatic logic in engine control panel' 3.
Associated Diesel Generator Trips and Alarms-a.
Low Press Turbo Oil - Right ($ 20 peig)
Alarm b.
Low Press Turbo Oil -.Left-(1 20 peig)
Alarm Trip - Low Press Turbo 011'(d.15 peig):-
Trip-c.
d.
Vibration Trip - one vibration detector on Trip each turbo, plus two engine vibration i
detectors e.
Turbocharger associated trips not available on emergency starte 4.
Local-Engine Panel objective 3-(partial) a.
Combustion air pressure 1)
Intake manifold pressure supplied by_
turbos i'
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l LO-LP-11103-06-c III. LESSON OUTLINE
- NOTES 2)
LEFT-TEST-RIGHT selector, one gauge 3)
Proportional to load 4)
Differences in bank pressures *can indicate turbocharger problems b.
Doric Trendicator - (Thermocouples) 1)
Thermocouples 1-8 left bank cylinders 2)
Thermocouples 9-16 right bank cylinders 3)
Thermocouples 17, 18 turbocharper stack exhaust temperatures E.
System Operation 1.
Principle of turbocharger operation:
Objective 1 Turbocharger turbine receiver exhaust, and a.
spins b.
As exhaust turbine spins, so does its bearing supported shaft c.
At the other end of the shaft, the blower wheel pulls fresh air in, compresses it, and discharges it to an intercooler d.
The turbochargers pressurizes the intake manifold 4
Amount of air being pulled in depends on e.
flow of exhaust being discharged, se turbo-charger speed will vary with engine load due to the heat of combustion f.
Scavenges exhaust from cylinder after exhaust stroke g.
F111a cylinder with air charge of high denalty on intake stroke 2.
Ensuring Turbocharger Reliability a.
Turbocharger bearings 1)
Bearing receives drip lube while engine is in standby u
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III.. LESSON OUTLINE 4 NOTES a) From lube oil keep warm system b) Drip or very small stream Approx.
35 gph c) Drip visible in sight glass for each turbo a
2)
Manual pre-lube for planned starts via lube oil keep warm-pump supplying oil 1
3)
Engine running, oil supplied to turbocharger by mal'n engine lube oil b.
Turbocharger cooling 1)
Engine running -Ljacket water system.
2)
Engine standby - jacket water keep-warm helps remove residual heat in turbocharger after the' engine has shut' down c.
Monitoring o* turbocharger inlet PEO does this temperature objective 3 1) 1200 F to turbocharger turbine inlet temperature, limit-2)
Not directly read, so use,a cylindgg Slow response of temperature limit of 1050 F max.
thermocouples on each-engine
- stroke, j
3)
May approach this on 110%_ load testing TCs won't show peak temps. Also, 4)
Each cylinder should be less than-engine cly. cools 1 50 F from average of all cylinders
' between strokes-
-d.
Intake manifold. pressure differences between banks-can-indicate a turbocharger beginning to fail 3.
Importance of proper oil level in Air Intake
_ Objective 3
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Filter (partial)'
a.-
Level too high, could'be from:-
1"-2" sludge on bottom expected 1)
Water in the reservoir 2)
Dust displacing oil level b.
Level low or none.- Dust enters the
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engine cylinders and can cause damage Premature wear L
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LO-LP-11103-06-C III. LESSON OUTLINE:
NOTES 4.
DG building Located away from gas storage CO2 - 260' faellities preventing gas intake H2 - 600' F.
System Interfaces 1.
Diesel Generator Lube Oil a.
Keep warm b.
Main 2.
Diesel Generator Jacket Water Cooling a.
Keep warm b.
Main 3.
Diesel Generator Pneumatic Controls Protective Tripping III.
SUMMARY
A.
Review Objectives 1.
DESCRIBE THE OPERATION OF THE EDG TURBOCHARGER See Sections II.C.3 and II.E.1 2.
DESCRIBE THE BASIC FLOWPATH OF THE EDG COMBUSTION AIR AND EXHAUST SYSTEM FROM THE INTAKE FILTERS TO THE EXHAUST SILENCERS See Section II.C.1 through 7 and LO-TP-11103-002 3.
DISCUSS THE IMPORTANCE OF MONITORING THE EDG.
COMBUSTION AIR AND EXHAUST SYSTEM See Sections II.D.4, II.E.2, and II.E.3 4.
DESCRIBE THE RESPONSE OF THE EDG COMBUSTION AIR AND EXHAUST SYSTEM TO AN EDG TRIP SIGNAL See Section II.D.2 13
LO-CL 11-05 LXCENSED OPERATOR OBJECTfVES 10-LP-11103 C I
. PURPOSE STATEMENT Following completion of this lesson, the student will possess those knowledges systematically identified for the performance of the DEA - COMBUSTION AIR AND EXHAUST tasks.
II LIST OF OBJECTIVES 1.
Describe the operation of the EDG turbocharger.
(KSA numbers: 064 GEN 0007) 2.
Describe the basic flowpath of the EDG combustion air and exhaust system from the intake filters to the exhaust silencers.
3.
Discuss the importance of monitoring the EDG combustion air and exhaust system.
(KSA numbers: 064000A106) 4.
Describe the response of the EDG combustion air and exhaust system to an EDG trip signal.
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