ML20092F937
| ML20092F937 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 12/06/1989 |
| From: | Brewer C GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20092F288 | List:
|
| References | |
| CON-IIT05-044-90, CON-IIT5-44-90, RTR-NUREG-1410 LO-LP-11102-05, LO-LP-11102-5, NUDOCS 9202190564 | |
| Download: ML20092F937 (17) | |
Text
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GEORGIA POWER POWER GENEkATION DEPARTMENT VoGTLL ELECTRIC GENERATING PLANT TRAINING LESSON PLAN k
TITLE:
EMERGENCY DIESEL GENERATOR AUXILIARIES NUMBER:
LO-LP-11102-05-C AIR START SYSTEM PROGRAM:
LICENSED OPERATOR REVISION:
5 SME:
C.
DREWER DATE:
12/6/89 APPROVED k< l}/
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INSTRUCTOR GUIDELINESt I.
FORMAT A.
Lecture with visual aids II.
MATERIALS A.
Overhead projector B.
Transpat'encias y_
C.
White board with markers III.
EVALUATION A.
Written or oral exam in conjunction with other lesson plans IV.
REMARKS u' v...$.) YI ? I'?. w w... a7I
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,MS9*r"}u itm 9202190564 920116 PDR ADOCK 0D000424 S
O LO-LP-11102-05-c Licensed Operator Objectives for this lesson plan can be found in the Licensed Operator System Master Plan Section 2.3 (Qualification signoff criteria)
Rev $
Cluster 11 DIESEL GENERATOR 2
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s LO-LP-!!!02 06-c l
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INTENTIONALLY LETT BLANK i
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6 LO-LP-11102-05-C
REFERENCES:
1.
PLANT VOGTLE PROCEDURES:
1314$
" DIESEL GENERATOR" 13146
" DIESEL CENERATOR FUEL OIL TRANSFER SYSTEM" 14980
" DIESEL GENERATOR OPERABILITY TEST" 13427 "4160 VAC 1E ELECTRICAL DISTRIBUTION SYSTEMS" 17035 17038, ANNUNCIATOR RESPONSE PROCEDURES 2.
TECHNICAL SPECIFICATIONS:
3.0.1 ELECTRICAL POWER SYSTEMS, AC SOURCES 3.
" STANDBY (EMERCENCY) DIESEL GENERATOR," VOOTLE TRAINING TEXT CHAPTER 16C, VEOP 4.
PLANT MANUAL CHAPTER 23 5.
P& ids, LOGICS AND OTHER PRAWINGS PIPING AND INSTRUMENT DIAGRAMS:
IX4DB170-1 1X4DB170-2 VENDOR DRAWINGS AE4AR01-27 (LUBE OIL)
AX4AR01-26 (JACRET WATER)
AX4AR01-29 (STARTING AIR)
AX4AR01-28 (FUEL OIL)
CONTROL LOGIC DIAGRAMS:
1XSDN107-1 (D0 FUEL OIL SYSTEM) 1XsDN107-2 (DG UNIT ENGINE) 115DN107-3 (GENERATOR)
ELaMsNTARY DIAonAMS 113D-BN-003C 113D-BR-003D 113D-BN-0035 113D-BN-003F 1X30-RN-0030 II3D-BR-003H 1X30-BN-0031 1X3D-BN-003J ONE LINE DIAGRAMS 1X3D-AA-A01A 4
J
10-LP-11102-05-C REFERENCES 1X3D-AA-K01A 6.
VI:NDOR KANUALS AX4AK01-509 AX4AK01-510 AX4AK01-563 7.
F.S.A.Rt 8.3, 9.5.4, 9.5.5, 9.5.6, 9.5.7, 9.5.8 8.
OAP COKMITMENT84 NONE 9.
INSTRUCTIONAL UNITC - NONE 10.
TRANSPARENCIES LO-TP-11102-001 LESSON OBJECTIVES LO-TP-11102-002 STARTING AIR SYSTEM LO-TP-11102-003
'A" DIESEL GENERATOR AIR START SOLENOID VALVES LO-TP-11102-004 AIR START DISTRIBUTION IAYOUT 5
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l LO-LP-11102-05-C III.
LESSON OUTLINE:
NOTEu INTRODUCTION A.
Overview 1.
This lesson describes the Diesel Air Starti System and how it and its components work in storing air for starting conditions. The lesson includse the air compressors and storage components, as well as engine-mounted components. The Air Start System itself is presented as a component is the presentation of the entire Do course.-
2.
Present the Objectives B.
The lesson is presented in the following sequences LO-TP-11102-001 Write on board 1.
Function 2.
Component Description 3.
Controls and instrumentation 4.
Operations 5.
Administrative 6.
Summary II.
PRESENTATION A.
Main purposes Provide the means for quick starting the diesel upon receipt of a start signal, by injecting high pressure air into the cylinders B.
Functions 1.
starting air supply 2.
supply engine control air a.
Two sources, one to
'A' engine control LO-TP-11102-002 circuits, one to
'B' b.
Regulated to 60 peig Used to operate pneumatic logic used for c.
engine protective circuits 3.
Supply air for barring objective 8b 6
l LO-LP-11102-05-c III.
LESSON OUTLINEl NOTES Barring device pneumatically operated a.
b.
Supplied via air receiver 001 only 4
Supply air for rolling engine Spins engine without starting it a.
5.
Governor oil booster air Increases oil pressure in governor when a.
starting b.
Causes fuel linkage and racks to move to an "on" position conserves air on starting, since fuel racks c.
move sooner on start Governor oil pressure low d.
Shtttle valve allows manifold with highest initially-on start att pressure to supply governor oil booster otherwise ard shutdown pushbutton located on south end of-engine auxiliary skid c.
component
Description:
1.
Two independent and redundant starting air systems with each system containings a.
Air compressor b.
Aftercooler c.
Air dryer d.
Air receiver Piping, piping to barring device e.
(one system only) f.
Air supply to engine control panel g.
Air start solenoid valves (2 each) h.
Air distributor 1.
Air supply manifold Air start valves (one per cylinder) 2.
Major Componente in order of flowpaths objective 1 7
]
.m.
LO-LP-11102-05-C III.
LESSON OUTLINE 8 NOTFS 4.
Compressor 1)
Reciprocating, air cooled, 2 stages, with intercooler between low'and high
+
pressure stages 2)
Two low pressure cylinder, one high pressure 3) 76 s.c.f.m. at 250 peig 4)
Motors 30 hp, 480V ac, 5)
Power supplies objective 2 (partial) a) A Train - INSI b)
B Train - INBO 6)
Designed to be capable of recharging its air receiver from minimum working pressure to 250 psig in 30 minutes 7)
Filter on air intake 8)
Splash-type workease lube, using thrower gear b.
Aftercooler 1)
Air-to-air cooler 2)
Electric fan blows ambient air through honeycomb to remove heat of compressor 3) 3/4 hp 4)
Power supplies same MCC as compressors MCC in respective DO room c.
Air dryer 1)
Removes moisture from compressed air 2)
.1 dryer per air compressor set 3)
Powered from 120/240V Distribution panel part of 1NBI/1NB0 objective 2 r
(partial) a) A Train - INY!l (1NBI).
b)
_B Train - INYO2 (1NBO) 8
. ~
l LO-LP-13102-05-C III.
LESSON OUTLINE:
NOTES 4) 1 hp motor 5)
Air to refrigerant (R-12) heat exchange 6) 200 s.c.f.m. at 275 psLg 7)
Air dryers crankcase heater - must be on at least 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to dryer start d.
Air receiver 1)
Vertical, cylindrical, 305 ft capacity 2)
Capable of providing air for a minimur. of 5 consecutive engine starts without compressor.
assistance when the: initial receiver pressure is normal 3)
Pressure relief 275 poig i 8 peig 4)
Normally maintained 225 to 260 psig Air start solenoid valves (admiselon-e.
Lo-TP-11102-003 valves) 1)
Two, parallel valves / circuit, 4 total /
engine 2)
Pilot operated diaphragm valve 3)
Admite air.to starting air. manifold for that bank 4)
Train A Do examples 9070A and 9070B (parallel) for right bank 9068A and 90683 (parallel) for left bank 5)
Power supplies objective 2 (partial) a)
- A' circuit air start solenoid valves (9068A, 9070A)
(1)
Powered by "A" circuit engine control. power 9
LO-LP-11102-05-C III.
LESSON OUTLINE 8 NOTES (2)
Indicated by white light on engine control panel b)
'B' circuit air start solenoid valves (90688, 90703)
(1) Powered by "B" circuit engine control power (2)
Indicatou by white light on engine control panel 6)
Will not open (fails closed) on objective 3 loss of 12$V de diesel engine control power a) Train A, Circuit A a' 1AD11, 2AD11 b) Train A, Circuit B - 1AD12, 2AD12 c) Train B,-Circuit A - 1BD11, 28D11 d) Train B, Circuit 5 - 15D12, 23D12 7)
Either train will admit sufficient air to start the EDO f.
Starting air valves 1) one per cylinder, mounted in engine head 2)
Pilot air to open from air start distributor 3)
Closes by spring (and firing pressure) 4)
hemits air to eflinder from starting air manifold 9
Air start distributor LO-TP-11102-004 1)
The air distributors time the starting air to each cylinder in relation to the power stroke of each piston 2)
Two, one per bank 3)
Driven by engine crankshaft 10
I LO-LP-11102-05-C III.
LESSO5~OUTLINUt NOTES
?
4)
Pilots starting air valves on each
.ylit.ier head i
5)
I.ubr.cated by *oilspitter" 6)
Located near flywheel D.
Controls and Instrumentations 1.
No control room start /stop switches or metern 2.
Local indicators a.
Preasure indicator on each receiver b.
Pressure indicator on engins control panel for left bank and right bank Also, control air pressure gauge on engine c.
control panel 3.
Annunciator al rms DG DISABLED LOW PRESS JTARTING AIR a.
215 psig 1 5 peig Technical Spacifications require at least one receiver greater than 210 poig b.
DG HIGH PRESS STARTING AIR 265 psig c.
DG SWITCH NOT IN AUTO 1)
Aftercooler switch not in AUTO 2)
Compressor switch OFF 3)
Other functions not associated with L
air start system also cause this alana d.
DG LOW PRESS CONTROL AIR A related alarm 1)
Starting air system pressure less than 55 peig 4.
Automatic functions Objective 4 a.
Each receiver maintained 225-250 psig by its compressor 11 a
\\
LO-LP-11102-05-C-III.
LESSON OUTLINE:
NOTES 1-1) s 225 peig receiver pressure -
compresect starts 2) 2 250 psig, compressor stops.
3)
Low lube oil level trip of air compressor b.
Interlock 1).
Should starting air pressure decrease to 150 peig, and DG does not start on an emergency start
. attempt, it will not try again.
2)
Manual attempt can be made c.
Aftercooler 1) starts / stops with its compressor d.
Air dryer 1)
Runs continuously once started e.
Air start solenoid valves 1)
All four (2 from circuit A, 2 from circuit B) open on DG start signal 2)
At 200 rpm, increasing, all four solenoid valvos elese E.
Operations 1.
Air receivers maintained at an operating-pressure by compressors r
a.
Auto start at'225 peig b.
Auto stop at 250 psig.
c.
Low pressure alarm at 210 peig i
d.
Upstream check valve on receiver inlet i
ensures broken pipe from compressor _will not effect receiver operability 2.
Upon receipt _of: start signal.
Objective 5 All four solenoid va.ves.open directing a.
starting air to each' cylinder =from both l
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LO-LP-11102-05-C III.
LESSON OUTLINE:
TOTES systems (NV9068A and B and RV9070A and B) b.
Air distributor properly times the opening of the air valve in each cylinder,at the proper time. Distributor turns in relation to engine speed When engine has fired and is running on its c.
power, a speed switch doenergizes and shuts the air start valves 1)
Speed switch set to 200 rpm 2)
Normally after 2 to 3 revolutions the combustion chamber pressure is too i
high to allow air injection to the cylinder d.
Emergency auto start signals may continue until al~ receiver pressure drops to 150 peig.
Normal start attempts - are 5 seconds in duration maximum. Manual starts may continue until receiver pressure drops to 90 peig 3.
Power to compressor and aftercooler fans not available (Train lA example) a.
Safety injection 1) 480V MCC INBI deenergized 2)
Non-12 supplied from 1R bus otherwise 3)
Compressors should not be restarted until procedures allow b.
Loss of off-site power
-1)
Power to INBI temporarily interrupted
.2)
Compressors and aftercoolers restart when power returns following.
seguencing Possible to restore power to non-13 480V c.
switchgear during_SI conditions 1) 1AA02 (Train A). supplies transformed 480 VAC to switchgear 1NB01, and non-lE INBI, which supplies compressors and several other DG accessories 13
1 e
LO-LP-11102-05-C III.-
LESSON OUTLINE:
~
NOTES 2) 1BA03 (Train B) supplies transformed 480 VAC.to switchgear 1NB10,-which supplies 1NB0 (similar to Train A) 3)
Trip / override pushbutton allows safety injection override reset (SIOR) on the breakers to INB01 (or-1NB10) 4)
The pushbuttons are at switchgear 1AA02 and 1BA03 F.
Administrative 1.
Tech Specification surveillance requirement Receiver air pressure greater than or equal a.
to 210 psig b.
Read on PI-9060, PI-9061, PI-9064, PI-9065-at receiver 2.
Independent verification required fore Air start receiver discharge isol valves a.
(open) b.
Air start receiver drains (verify closed)
III
SUMMARY
A.
Review the Objectives 1.
DESCRIBE THE FLOWPATH OF ONE TRAIN OF THE AIR START SYSTEK FROM THE COMPRESSOR TO THE AIR SUPPLY MANIFOLDS See LO-TP-11102-002-
- 2. - SETERMINE THE POWER SUPPLIES TO THk AIR COMPRESSORS, AIR DRYERS, AND AIR START SOLENOID.-
VALVES Air Compressora Train A EDCs - INBI, 2NBI 480V AC Non-13 Train B EDGs - INBO,-2NBO Air Dryers Train A=EDGs - INYII, 2NYIl 120/240V AC Non-15 Train B EDCs - 1NYO1, 2NYO1-Air Start.
Solenoid Valves Train A EDGs - 1AD11,1AD12, 14 O
(,
1 l
LO-LP-11102-05-C III.
LESSON OUTLIht NOTES 2AD11,2AD12 125V DC II Train B EDCs - 1BD12,1BD11, 2BD12,2BD11 (Supplied to vaivas free engine contro*1 board power circuits) 3.
DESCRIBE THE FAILURE MODE FOR THE AI4 START SOLENOID VALVES A*8D THE IMPACT TFIS RAS ON EDO OPERABILITY valves will not open following a loss of DC power Valves will f ail shut on interruption of DC power o
Either train will admit sufficient air to start the EDG 4.
DESCRIBE THE PERMISSIVES AND INTERLOCK 8 ASSOCIATED NITH THE AIR START SYSTEM See Section II.D.4 5.
EXPLAIN HOW EACH OF THE FOLLOWING RESPOND TO AN EDG START SIGNAL:
a.
AIR COMPRESSOR Following SI, compressors are doenergized, since 1NE01 and INB10 are stripped, and they power 1NBC and INDI.
Compressors can be restarted on reenergisation of the buses. Following a loss of offeito power,.
power will be temporarily interrupted until diesel generator ties to the bus.
1NB01 and 1NB10.are not shed in this case, and compressor will restart to refill air res.olvers b.
AIR'GThkT SOLENOID VALVES
-opened by any start signal,-they admit starting air into the-starting air manifolds and the air start distributor c.
AIR START DISTRIBUTORS Rotated by the camshaft, the air.' start distributors apply an air signal to sequentially open the air start velves at 15
)
n LO-LP-11102-05-C III.
LESSON OUTLINE:
NOTES the proper time.
This function is terminated when the 200 rpm DG running switch closes the air start solenoid valves and/or the combustion pressure in the cylinder forces its air start' valve closed I
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LO-CL 11-05 LICENSED OPERATOR OlUECTIVES IE-LP 111023 I
Pl1RPOSE STATEMENT Following completion of this lesson, the student will possess those knowledges systematically identified for the perfortnance of the DE AUX AIR START SYSTEM tasks.
~Il LIST OF OBJECTIVES 1.
Describe the flowpath of one train of the Air Start System, from the compressor to the air supply manifolds.
(KSA numbers: 064000K105) 2.
Deterraine the power supplies to the air compressors, air dryers.
and air start solenoid valves.
(KSA numbers: 064000K201) 3.
Describe the failure mode for the air start solenoid valves and the impact this has on EDG operability.
(KSA numbers: 064000A201) 4 Describe the permissives and interlocks associated with the air start system.
5.
Explain how each of the following responds to an EDG start signal,
- a. Air compressors
- b. Air start solenoid valves
- c. Air distributor (KSA numbers: 064 GEN 0007) i i
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