ML17261A990
| ML17261A990 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/23/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261A978 | List: |
| References | |
| AP-TURB.1, NUDOCS 9003080369 | |
| Download: ML17261A990 (14) | |
Text
EOP:
AP-TURB. 1 TITLE:
TURBINE TRIP WITHOUT RX TRIP REQUIRED REV:
4 PAGE 1 of 7 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE cP 0
P T SUPERI TE DENT O
EFFECTIVE DATE QA~ NON-QA REVIEWED BY:
CATEGORY 1.0 GINNASTAT~ON START';
DATE T[ME COiMPLETED.
DATE TIIVE:
9003080369 900227 PDR ADOCK 05000244 F
PNU I
l
EOP:
AP-TURB. 1 TITLE:
TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 4
PAGE 2 of 7 A.
PURPOSE This procedure provides the necessary instructions to control the plant following a turbine trip without a reactor trip required.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
AP-FW.1, Partial or Complete Loss of MFW, b.
AP-TURB.3, Turbine Vibrations, c.
AP-TURB.4, Loss of Condenser
- Vacuum, 2.
SYMPTOMS The symptoms of TURBINE TRIP WITHOUT RX TRIP REQUIRED are; a.
Annunciator K-l, THRUST BEARING FAILURE alarm, or b.
Annunciator K-9, TURBINE BEARING OIL LO PRESS TRIP 6 psi alarm, or c.
Annunciator K-10, TURBINE MANUAL TRIP alarm, or d.
Annunciator K-17, TURBINE LOW VACUUM TRIP 20" Hg alarm, or e.
Annunciator K-18, MAIN FEEDWATER PUMPS TRIPPED alarm, or f.
Annunciator K-26, GENERATOR LOCKOUT RELAY alarm, or g.
Annunciator K-25, TURBINE OVERSPEED ALERT 1980 RPM
- alarm,
'or.
h.
Annunciator F-21, COND HI PRESS 20" HG OR LOSS OF BOTH CIRC WTR PMPS alarm, or i.
Annunciator K-3, AMSAC ACTUATED alarm
I
EOP:
AP-TURB 1 Tl!LE:
TURBINE TRIP WITHOUT RX TRIP REQUIRED REV!
4 PAGE 3 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF AT ANY TIME DURING THIS PROCBDURE, A REACTOR TRIP OCCURS, E-O, REACTOR TRIP OR SAFETY INJECTION, SHALL BE PERFORMED.
1 Verify Turbine Stop Valves CLOSED Trip turbine manually.
o IF turbine stop valves do NOT
- close, THEN close both MSIVs.
-AND-
?
o IF reactor power greater than 8X power, manually trip the reactor and go to E-O, REACTOR TRIP or SAFETY INJECTION.
2 Verify Proper Operation Of Rod Control And Steam Dump:
- a. Control rods - IN AUTO AND MOVING IN
- b. Condenser steam dump - OPERATING IN AUTO
- c. Tavg - TRENDING TO 547'F
- a. Place rod control bank selector in manual and drive rods in.
- b. IF steam dump NOT available, THEN:
o Verify operation of S/G ARVs.
o IF power is greater than 8X, THEN ensure reactor trip and GO TO E-O, REACTOR TRIP or SAFETY INJECTION.
- c. IF Tavg can NOT be controlled, THBN manually trip the reactor and go to E-O, REACTOR TRIP or SAFETY INJECTION.
I'
EOP:
AP-TURB.1 71TLE:
TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 4
PAGE 4 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3
Check PRZR Pressure GREATER IF PRZR pressure is decreasing THAN 2000 PSIG uncontrollably, THEN go to AP-PRZR.l, ABNORMAL PRZR PRESSURE.
4 Check PRZR Level GREATER THAN 134 IF PRZR level less than
- 13X, THEN:
- a. Verify letdown isolation.
- b. Increase charging as necessary to restore PRZR level to program.
5 Check S/G Levels:
- a. Both S/G levels - TRENDING TO 39X
- b. Main feed pump - OPERATING PROPERLY TO CONTROL S/G LEVEL
- a. Control feed'flow manually to restore S/G levels to 39X.
- b. IF both MFV pumps have tripped, THEN:
o Verify both MDAFTl pumps have started and flow has throttled to less than 230 gpm.
o Control AFV flow as required to maintain S/G level at "39X.
H I'l
EOP:
AP-TURB. 1 LITLE:
TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 4
PAGE 5 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 6 Verify Reactor Power Decreasing To No Load:
o Pover - LESS THAN 5X o
Intermediate ranges
- DECREASING TOWARD THE POINT OF ADDING HEAT, 2.5 x 10-~
AMPS Decrease reactor power to no load:
- a. Place rod control bank selector in MANUAL and drive rods in to reduce pover.
- b. Verify steam dump closes as temperature decreases, OR place steam dump in manual and close valves.
- c. Verify S/G ARVs close as required.
7 Verify Bus 11A and Bus llB Auto Bus Transfer:
o For Bus 11A:
IF Bus llA or llB is de-energized; THEN restore power as follovs:
o For Bus llA:
a.
Bus llA normal feed bkr-OPEN b.
Bus llA to bus 12A tie-CLOSED o
For Bus llB:
a.
Bus llB normal feed bkr-OPEN b.
Bus llB to bus 12B tie-CLOSED a.
Check open Bus llA normal feed bkr.
- b. Place bus llA-12A tie sync svitch to ON.
- c. Close bus llA-12A tie bkr o
For Bus 11B:
a.
Check open bus llB normal feed bkr.
- b. Place bus llB-12B tie sync switch to ON.
- c. Close bus llB-12B tie bkr.
EOP AP-TURB. 1 TURBINE TRIP WITHOUT RX TRIP REQUIRED REV:
4 PAGE 6 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8 Establish Shutdown Control WHEN Reactor Power And S/G Levels Have Stabilized At No Load:
- a. Place rod control bank selector
- IN MANUAL
- b. Place AFV bypass (pump lA, pump 1B) switches
- IN DEFEAT
- c. Start
- BOTH MDAFV PUMPS AND VERIFY DISCHARGE PRESSURE
- d. Close - MFV PUMP (1A, 1B)
DISCHARGE VALVES e.
Stop - BOTH MFV PUMPS
- f. Ad)ust AFV bypass valves 4480 and 4481 - TO CONTROL S/G LEVELS AT 39X NOTE:
REFER TO 0-9.3, IMMEDIATE NOTIFICATION FOR REPORTING REQUIREMENTS.
9 Establish THE CAUSE OF THE TURBINE TRIP AND NOTIFY DUTY ENGINEER
EOP:
AP-TURB. 1 TURBINE TRIP WITHOUT RX TRIP REQUIRED REV 4
PAGE 7 of 7 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 10 Establish Desired Plant Conditions:
- a. Reactor shutdovn - DESIRED
- a. IF turbine is to be restored to
- service, THEN maintain reactor critical and refer to 0-1.2, PLANT FROM HOT SHUTDOWN TO STEADY LOAD.
- b. Refer to 2.1, NORMAL SHUTDOWN TO HOT SHUTDOWN
-END-