ML20092G911
| ML20092G911 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 03/16/1990 |
| From: | Bochhold J GEORGIA POWER CO. |
| To: | |
| Shared Package | |
| ML20092F288 | List:
|
| References | |
| CON-IIT05-090-90, CON-IIT5-90-90, RTR-NUREG-1410 VEGP-18028-C, NUDOCS 9202200391 | |
| Download: ML20092G911 (19) | |
Text
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Vogtle Electdc Generating Plant h/,/.,-h 18028-C NUCLEAQ OPERAT)CNS p.,,,,,n y,,
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,p LN, Artf*, C f C A rts g ABNORMAL OPERATING PROCEDURc_
g~ ;' jq. p) c'k CO LOSS OF INSTRUMENT AIR PURPOSE This procedure specifies response to a loss of Instrument Air pressure.
It is divided into the following sub-procedures:
A.
Loss of Instrument Air At Power (Page 2).
B.
Loss of Instrument Air In Mode 3 (Page 7).
C.
Loss of Instrument Air In Modes 4, 5 or 6 (Page 12).
SYMPTOMS SERVICE AIR HDR LO PRESS Annunciator.
e INSTR AIR EQUIP LO PRESS ISO Annunciator, e
Instrument Air supply header pressure indicating less than e
80 psig on PI-9361 at Main Control Board, INSTR AIR CNMT SPLY LINE BREAK Annunciator, e
Trip of running air compressor and standby fails to start.
e I
I 9202200391 920116 PDR ADOCK 05000424 S
PDR 70310 0 MGl30
enoctDURE No.
mE SloN PAGE No VEGP 18028-C 7
2 of 19
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A.
LOSS OF INSTRUMENT AIR AT POWER ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED A1.
Verify all availabic air A1.
Start all available air compressors for the compressors for the affected affected unit - Running.
unit.
NOTE A loss of Service Air will cause failurs of the Fuel Transfer Canal and/or Cask Loading Pit Gate Seal Assemblies if valved in to Service Air header.
A2.
Monitor instrument air A2.
IF instrument air header header pressure -
pressure lowers to less than IF stable or rising, 80 psig THEN go to Step A5.
THEN dis, patch an operator s
l
)
to ensure Service Air Header Isolation Valve PV-9375 is closed.
m e
NC80Va8 No.
LavisioN pMt No.
VEGP 18028-C 7'
3 of 19
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED O
NOTE UNIT 1 SERV AIR HDr TIED TO UNIT 2 Annunciator C05 of ALB01 will annw-late in the Unit 1 Control Room when instrument air :.eader common to Unit 1 and Unit 2 is established.
If the pressure in the instrument air header common to both units lowers below 80 psig, the Unit 1 and Unit 2 headers should be reisolated from each other.
SERVICE AIR SWING CMPSR MISALIGNED Annunciator A05 of
^
ALB01 may. annunciate in the Unit 1 Control Room if the Unit 1 and Unit 2 headers are raisolated from each
- other, A3.
Check air compressors A3.
- a. Verify all available air running on affected unit -
compressors for both IF 2.or more, units are-running.
TREN go to Step A5.
- b. IF the total number of running Unit 1 and Unit 2
()
air compressors is 4 or
- more, THEN dispatch operator equfpped with a radio to establish an open t
instrument air header between Unit I and Unit 2 by opening the following valves:
e 1-2401-04-510, Service Air Receiver 504 to Air Dryer Isolation Valve e 2401-U4-510, Service Air Unit I to Unit 2 Header Isolation Valve The operator will remain at the valve location and establish communicat:on with the Control Re m, L
E
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i FGOctDUMt NO.
L tVis (
PAQt NO.
VEGP-18028-C 7
4 of L9 i
..,. ~r.
i ACTION /EXPROTED RESPONSE RESPONSE NOT OBTAINED
()
- c. IF the instrument air pressure of the i
unaffected unit lowers to less than 80 THEN restore /psig, reisolate i
unaffected unit instrument air as follows:
i UNIT 1 e
Open valve 1-2401-04-510 e
Shut valve 2-2401-U4-510 Verify swing compressor e
is running UNIT 2 e
Shut valve 1-2401-U4-510 e
Open valve O
2-2401-U4-510 Verify swing compressor e
is running.
NOTE-Loss of Turbine Building instrument air will close all Extraction Steam NRVs and fail all Feedwater Heater High Level Dump valves fully open.
A4.
If necessary, dispatch an
-operator to place Instrument
' Air Dryers in the Two-Chamber / Full Flow mode per 13711, INSTRUMENT AIR SYSTEM.
o A5.
Identify the source of the leakage and isolate if possible.
O 703445.
'PRoCfoOME NO.
LEVISION PAGE No.
VEGP 18028-C 7
5 of 19 c: ".-
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED A6.
IF header pressure falls A6.
Go to Step A8.
Felow 70 psig, THEN dispatci an operator to ensure Turbino Building Instrument Air Isolation Valve PV-19414 is closed.
A7.
IF the instrument air A7.
IF instrument air header Header pressure can be pressure can NOT be restored
- restored, AND is less than 70 psig, THEN immediately locally THEN trip the reactor and reset and reopen PV-19414 initiate 19000-C, E-0 REACTOR TRIP OR SAFETY INJECTION and go to Section B of-this procedure.
NOTE Total loss of instrument air pre.sure will preclude 7-continued plant operation.
A8.
Verify header pressure -
A8.
IF source of the leakage Stable Or Rising.
cannot be isolated, THEN perform the followings
- a. Restore /reisolate the unaffected unit instrument air as follows:
UNIT 1 e
Open valve 1-2401-U4-510 e
Shut valve 2-2401-U4-510 e
Verify swing compressor is running.
UNIT 2-e Shut valve 1-2401-U4-510 e
Open valve 2-2401-U4-510 C)g e
Verify swing compre wor is running.
j
PRoCEDUAs No.
GEVISloN PAGE No.
VEGP 18028-C 7
6 of 19
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ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED A9.
Monitor Instrument Air A9.
Return to procedure and step Header pressure on in effect.
PI-9361 - Less Than 100 Psig.
A10. Determine if plant A10. Commence Unit Shutdown in operation may continue accordance with the under the UOP in effect, appropriate UOP.
All. WHEN the cause has been corrected, THEN initiate 13710, EERVICE AIR SYSTEM and 13711-C, INSTRUMENT AIR SYSTEM to restore systems to-normal.
O END OF SUB-PROCEDURE TEXT P
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M3C90Uet NO.
LtvisiON PAQt No.
VEGP 18028-C 7
7 of 19
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i es B.
LOSS OF INSTRUMENT AIR IN MODE 3 i
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED i
I 5
Bl.
Verify all available air Bl.
Start all available air.
compressors for the compressors for the affected i
affected unit - Running, unit.
i B2.
Check if con, col of swing B2, If the swing compressor is compressor is set to not running to support affected unit --
unaffected unit, THEN:
IF control is set to the affected unit,
- a. Dispatch operator to THEN start swing compressor.
verify for the affected unit:
4 UNIT 1
}
\\
e Service Air Receiver
[
504 to-Air Dryer l
Isolation Valve i
1-2401-U4-510 open 1
e Service Air Unit 1 to Unit 2 Header-Isolation Valve-2-2401-U4-510 shut e-Unit 1/ Unit 2 control Transfer Switch A-HS-19458 in " UNIT-1"-
position-UNIT'2 e
Valve 1-2401-U4-510 shut e. Valve 2-2401-U4-510-open i
e Switch A-HS-19458 in
" UNIT.2" position
- b. Start swing compressor.
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PROCEDURE No.
f.cy:SloN PAGE No.
VEGP 18028-C 7
8 of 19
..-r ACTION /
P CTED RESFONSE RESPONSE NOT OBTAINED B3.
MoniNrInstrumentAir B3.
Go to Step Bil.
supply header pressure on PI-9361 - Less Than 100 psig.
B4, If necessary, dispatch an operator to place Instr acnt Air Dryers in the Two Chamber / Full Flow mode per 13711, INSTRUMENT AIR SYSTEM.
B5.
IF header pressure falls Below 70 psig, THEN dispatch an operator to ensure Turbine Building Instrument Air Isolation Valve PV-19414 is closed.
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NOTE If Instrument Air pressure continues to degrade, preparation should be made for manual control of the SG Atmospheric Relief Valves.
.A-w-...
B6.
Verify SG At.mosph n,
B6.
Perform the following:
Relief Valves - Maintaining SG Pressure Between 1085 And 1135 psig,
- a. Ensure SG Atmospheric Relief Valves in AUTO:
SG 1:
PIC-3000A SG 2:
PIC-3010A SG 3:
PIC-3020A SG 4:
PIC-3030A
- b. Ensure controller setpoint potentiometers set at 7.5.
n B7.
Verify SG levels -
B7.
Restore AFW flow to Sc V
Trending To 50% NR.
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PROCEDUmE No.
LEVISloN PAGE No.
VEGP 18028-C 7
9 of 19 m
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE A loss of Irratusent Air will cause the PD Pump to fail to maximum speed.
Loss of Service Air will cause failure of the Fuel Transfer Canal and/or Cast Loading Pit gate seal assemblies if valved in to service air r
B8.
Establish charging using B8.
IF PRZR level is falling, Attachment A, Establishing cEeck for an excessive RCS Charging Without Instrument cooldown rate.
Air and ensure PRZR level trending to Programmed Value.
B9.
When Tavg has stabilized, shut down 3 RCPs.
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CAUTION Cooldown to Mode 4 should not be initiated until Instrument Air pressure is restored and makeup water is available to the Reactor Makeup Water System and Condensate Storage and Degasifier System.
B10. Check VCT level - Greater B10. IF VCT level falls below Than 10%.
7T, ensure that Charging Pump suction is aligned to the RWST:
LV-0112D:
Open LV-0112E:
Open LV-0112B:
Closed LV-0112C:
Closed HV-8508A (HV-8508B): Open HV-8509A (HV-8509B): Ocer HV-8111A (HV-8111B): C'..wed
PROCEDURE No.
LEVisioN Pact No, VEGP 18028-C 7
10 of 19
()
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED Bil. Inves'tigate the cause of low Instrument Air pressures l
e Check Air Compressors Check Air Dryers e
e Check piping integrity.
NOTE The CVCS Boronometer will be inoperable until instrument air pressure is restored.
B12. IF PRZR level continues rising.
AND instrument air pressure cannot be
- restored,
(\\-)
THEN place the Reactor He'a~d Vent System letdown path in service.
B13. IF the Main Turbine turning
-gear disengages or needs to be engaged.
THEN initiate 13800, MAIN TUR11NE OPERATION to re-engage / engage turning gear.
B14. Correct the cause of the B14. Maintain Mode 3 conditions.
loss of air pressure.
B15. Establish normal instrument B15. Return to Step Bl.
air header pressure.
B16. Open CNMT Instrument Air Header Isolation Valves
,s using HV-9378A and
-()
HV-9378B.
703485
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PROC 5NAk%
FIEVislON' PAgg No, VECF 18028-C 7-11 of 19 u-
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-ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED y:x B17.EstabTishlnormalcharging, letdown and-RCP seal-injeetion flow by
-initiating 13006, CVCS
' STARTUP AND NORMAL OPERATION.-
B18. Locally reset 'and open the following Instrument Air and Service Air System trip valvest a... Turbine ' Building Instrument Air Isolation-Valve PV-19414 by initiating 13711
-INSTRUMENT AIR SYSTEM.
b.-Service Air Isolation PV-9375 by: initiating-13710, SERVICE-AIR SYSTEM.:
B19. Continue operation in laccordance with the Unit Operatin ' Procedure--
currenti in1effect.
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-EYQ OF SUB-PROCEDURE TEXT-
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PMoCEDUnE No.
F.EVISION FAGE No.
~
~
VEGPc
-18028-C 7
12 of 19 c,
1.-
O C.
LOSS OF,INSTROMENT AIR IN MODES 4, 5 OR 6 ACTION /EXPECTSD RESPONSE RESPONSENOTOB,T{INED C1.
Verify all available air C1.
Start all ava12 :Pv' e air compressors for the compressors for the affected affected unit - Running, unit.
C2.
Check if control of swing C2. _Ij[ the swing compressor-is compressor.is set to not running to support affected unit unaffected unit, THEN:
IF control is set to the iTfected unit,
- a. Dispatch operator to THEN start swing compressor, verify for the affected unit:
UNIT 1 e
Service Air Receiver 504 to Air Dryer Isolation Valve.
1-2401-U4-510 open e
Service Air Unit 1 to Unit 2 Header Isolation Valve 2-2401-U4-510 shut e-Unit.1/ Unit 2 Control Transfer Switch A-HS-19458 in " UNIT 1" position UNIT 2-e Valve 1-2401-U4-510 L
shut e
Valve 2-2401-U4-510 open e
Switch A-HS-19458 in
" UNIT 2" position I
- b. Start swing compressor.
LO L..
F RoCEDUmE No.
REVISION PAGE No.
VEGP 18028-C 7
13 of 19 f"
V ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE Loss of Instrument Air will cause the PD Pump to fail to maximum speed.
Loss of Service Air will cause failure of the Fuel Transfer Canal and/or Cask Loading Pit gate seal assemblies if valved in to Service Air Header.
C3.
Monitor Instrument Air C3.
Go to Step C10.
Header pressure on PI-9361 - Less Than 100 psig.
C4.
If necessary, dispatch an operator to place Instrument Air Dryers in the Two Chamber / Full Flow mode per 13711, INSTRUMENT A g SYSTE C V '
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CAUTION
/
s
-/
Loss of instrument air pressure will cause the RHR HX outlet valves to fail full open and the HX bypass valves to fail fully closed.
/
/
C5.
Trip one RHR Pump if
/
two are running.
/
Dm C6.
IF in Mode 6, suspend Ei1 fuel movement.
C7.
IF the RCS is solid C7.
IF the RCS is not solid, THEN trip all charging THEN establish chargine ner pumps.
Attachment A, EstablisSi.a Charging Without Instru -nt Air.
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I P90cEDURE No.
6;EVISION PAGEelO.
VEGP 18028-C
-7 14 of 19
.,q..
1
--- t ACTION / EXPECTED RESPONSE' RESPONSE NOT OBTAINED C 8, -- IF any RCPs-are running, TREN monitor No. 1 seal Teakoff: temperature and flow until-charging pump is restarted.
~-
V-C9.-
IF RCS temperature is C9.
Reduce CCW flow to the-H111ng rapidly, operating RHR Train.
.THEN trip the running RHR 1
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103445 -
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PMcCEDURE No.
REvlsioN FAGE No.
.j 18928-C 7
15 of 19 VEGP
..' v. c.
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED a
NOTE
-As the-RCS. temperature drops to 250*F,-the RHR flow may be increased gradually until valve (s) 1205-U6-019 (020) is(are) fully opened.
g
/ C10 IF RCS tem)erature rises L
IEove 325'?
-OR-IF, in_Hode 6 and RCS temperature rises above 185 F' THEN place A(B) train of lu r cooling in service:
^
- a. Dispatch operator and establish communication at RHR Pump Discharge
_N 1205-U6-019-(020) and flow indicators FIS-0610, (0611).
- b. Unlock and Throttle 1205-U6-019-(020) to two turns open.and then acart RHR Pump A-(B)'.-
u_
'c. Operate--1205-U6-019 (020) to maintains-e-RCS cooldown rate -
LESS THAN-100*F/HR.
e RHR flow rate -
GREATER THAN 750:GPM.
e.
CCW temperature at RHR~exchangers - LESS than;195'F.
The annunciator A01 of-ALB61,1NSCW CCW ACCW
. TRAIN A TEMP ALARM (A02 of ALB61', NSCW t}-
CCW-ACCW TRAIN B TEMP
\\
-ALARM) muse not be s
actuated.
wr'
r PAoCEDURE No.
LEVIStoN FALE No.
VEGP 18028-C 7
16 of 19
[(,)
ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED C11. IF the Main Turbine terning gear disengages or needs to be engaged, THEN initiate 13800, MAIN TUlGINE OPERATION, to re-engage / engage turning gear.
C12 IF header pressure is below 7U psig, THEN dispatch an operator to ensure Turbing Building Instrument Air Isolation Valve PV-19414 is closed.
Cl3. Investigate the cause of low instrument air pressure:
Check Air Compressors
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Check Air Dryers e
Check piping integrity.
e C14. Correct the cause of the C14. Maintain stable RCS loss of air pressure.
conditions until a source of instrument air is established.
C15. Establish 'ormal C15. Return to Step C1.
instrument air header pressure.
C16. Open CNMT. Instrument Air Isolation Valves HV-9378A or HV-9378B.
L C17. If necessary, place the non-running RHR Train in
/~N service by initiating
(!
13011, RESIDUAL HEAT REMOVAL SYSTEM.
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PRoCEDU;,E No.
REVISloN PAGE No.
VEGP 18028-C 7
17 of 19 ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED C18. Establish normal charging and RCP Seal injection flow by initiating 13006, CVCS STARTUP AND NORMAL OPERATION.
C19. Establish normal letdown flows e
From CVCS
-OR-e From RHR C20. Locally reset and open the following Instrument Air and Service Air System trip valves:
- a. Turbine Building i
Instrument Air Isolation PV-19414 by initiating 13711, INSTRUMENT AIR SYSTEM.
- b. Service Air Isolation PV-9375 by initiating 13710, SERVICE AIR SYSTEM.
C21. Align the CVCS System as required by the Unit Operating Procedure currently in effect.
C22. Continue operations.
END OF PROCEDURE TEXT 1
. mu<s
EOCEDU, E No.
REVISloN I FAGE No.
VEGP 18028-C 7
18 of 19 Sheet 1 of 2 (3)
ATTACHMENT A ESTABLISHING CRARGING WITHOUT INSTRUMENT AIR A.
Establish Charging With Train A Emergency Bus Energized:
- 1. Verify Train A CCP - RUNNING.
- 2. Verify Train A charging isolation valves - OPEN:
e HV-8116 e
HV-0190A HV-8105 (locally verify if Train B De-energized) e
- 3. Shut the following charging isolation valves:
e HV-8485A e
HV-8106
- 4. Dispatch local operators to maintain 8 to 13 gpm seal injection flow by throttling OPEN:
(^T UNIT 1 UNIT 2 l-1208-U6-152 2-1208-U6-152
- 5. Maintain desired charging flow using HV-0190A.
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7 PRoCEDU E No.
REVISloN PAGE No.
VEGP 18028-C 7
19 of 19 3
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Sheet 2 of 2 A/
ATTACHMENT A (Cont'd.)
B.
Establish Charging With Train B Emergency Bus Energized:
- 1. Verify Train B CCP - RUNNING.
- 2. Verify Train B charging isolation valve HV-0190B - OPEN.
- 3. Verify Train B BIT outlet isolation valve HV-8801B - OPEN.
- 4. Shut the following charging isolation valves:
e HV-8438 e
HV-8485B e
HV-8105
- 5. Dispatch local operators to maintain 8 to 13 gpm seal injection flow by throttling OPEN:
UNIT 1 UNIT 2 1-1208-U6-151 2-1208-U6-151 (v)
- 6. Maintain desired charging flow using HV-0190B.
h END OF ATTACHMENT A f
C
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