ML17263A617
| ML17263A617 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 03/30/1994 |
| From: | ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17263A585 | List:
|
| References | |
| FR-S.1, NUDOCS 9404190173 | |
| Download: ML17263A617 (26) | |
Text
EOP:
FR-S.1 TITLE:
RESPONSE
TO REACTOR RESTART/ATWS REV' PAGE 1 of 11 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE
'3 30
'9W PLA T SUPERINTENDENT EFFECTIVE DATE CATEGORY 1.0 REVIEWED BY:
.9404190173 940414 '"('
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FR-S.1
RESPONSE
TO REACTOR RESTART/ATWS REV:
8 PAGE 2 of 11 A.
PURPOSE This procedure provides actions to add negative reactivity to a core which is observed to be critical when expected to be shut down.
B.
ENTRY CONDITIONS/SYMPTOMS l.
ENTRY CONDITIONS This procedure is entered from:
a.
E-O, REACTOR TRIP OR SAFETY INJECTION, when reactor trip is not verified and manual trip is not effective.
b.
F-0.1, SUBCRITICALITY Critical Safety Function Status Tree on either a
RED or ORANGE condition.
EOP:
FR-S. 1
RESPONSE
TO REACTOR RESTART/ATWS REV:
8 PAGE 3 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED NOTE:
o Steps 1 through 4 are IMMEDIATE ACTION steps.
Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10+
R/hr.
o At least one train of reactor trip breakers OPEN o
Neutron flux -
DECREASING Manually trip reactor.
IF reactor trip breakers NOT open, THEN manually insert control rods.
o MRPI indicates
- ALL CONTROL AND SHUTDOWN RODS ON BOTTOM O
2 Verify Turbine Stop Valves CLOSED Manually trip turbine.
IF turbine trip can NOT be
- verified, THEN close both MSIVs.
a.
MDAFW pumps RUNNING b.
TDAFW pump RUNNING IF NECESSARY
- a. Manually start MDAFW pumps.
- b. Manually open steam supply valves.
~ MOV-3505A
~ MOV-3504A
EOIS:
FR-S.1 TITLE:
RESPONSE
TO REACTOR RESTART/ATWS REV:
8 PAGE 4 of ll STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- x *******4**************************
CAUTION ACTIONS TAKEN TO INITIATE RCS BORATION SHALL NOT BE REVERSED WHEN PERFORMING IMMEDIATE ACTIONS OF E-O, REACTOR TRIP OR SAFETY INJECTION.
- xx*************%
- x***
NOTE: If offsite power is lost coincident with SI, then MCC C and MCC D
lockout relays must be reset to restore BA and RMW pumps.
O 4
Initiate Emergency Boration Of RCS a.
Check SI status:
a.
Perform the following:
o All SI annunciators EXTINGUISHED o
All SI pumps OFF IN AUTO
- 1) Complete the immediate actions of E-O, REACTOR TRIP OR SAFETY INJECTION, while continuing with this procedure
- b. Verify at least one charging pump RUNNING
- 2) IF SI flow indicated, THEN go to SteP 5.
IP NOT, THEN So'o Step 4b.
- b. Perform the following
- 1) Reset SI if necessary.
- 2) Start one charging pump.
- c. Align boration path:
- 1) Start two BA transfer pumps
- 2) Open MOV-350
- 3) Verify BA flow
- d. Verify charging flow path:
o Charging valve to loop B cold leg (AOV-294)
OPEN o
Charging flow control valve (HCV-142)
DEMAND AT 0%
- c. Initiate normal boration at maximum rate using the boric acid flow control valve, FCV-llOA.
IF flow can NOT be established, THEN refer to ER-CVCS.1, REACTOR MAKEUP CONTROL MALFUNCTION.
- d. Manually align valves and verify flow.
EOP:
FR-S.1
RESPONSE
TO REACTOR RESTART/ATWS REV'.
8 PAGE 5 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5
Check If The Following Trips Have Occurred:
- a. Reactor trip
- a. Dispatch AO to locally trip reactor:
o Trip MG set breakers at bus 13 and bus 15.
- b. Turbine trip o
Open reactor trip breakers locally.
- b. Dispatch operator to locally trip turbine using manual trip lever on west end of HP turbine.
6 Check PRZR PORV Status:
o RCS pressure LESS THAN 2335 PSIG o
PORVs CLOSED Verify CNMT ventilation isolation.
IF dampers NOT closed, THEN momentarily deenergize CNMT particulate monitor, R-ll, to actuate CVI.
o Annunciator F-19, PRZR PORV OUTLET HI TEMP -
EXTINGUISHED
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FR-S.1 TITLE:
RESPONSE
TO REACTOR RESTART/ATWS REV:
8 PAGE 6 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- x **x *****
x %'******
x ******
x x**x **********
CAUTION IF CST LEVEL DECREASES TO LESS THAN 5 FEET, THEN ALTERNATE WATER. SOURCES FOR AFW PUMPS WILL BE NECESSARY (REFER TO ER-AFW.l, ALTERNATE WATER SUPPLY TO AFW PUMPS).
x ****x x x x x
- 0 x x x
- x x***x**********x******
7 Check S/G Level:
a.
Narrow range level in at least one S/G GREATER THAN 5%
(25%
adverse CNMT]
- b. Control feed flow to maintain narrow range level between 17%
[25% adverse CNMT] and 50%
a.
Perform the following:
- 1) Verify total feed flow greater than 400 gpm.
IF NOT, THEN manually start pumps and align valves as necessary.
- 2) Maintain total feed flow greater than 400 gpm until narrow range level greater than 5%
[25% adverse CNMT] in at least one S/G.
8 Verify Dilution Paths ISOLATED Manually isolate dilution paths.
o Place RMW mode switch to BORATE o
Verify RMW to blender (HCV-111)
CLOSED o
Verify RMW pumps OFF
Ey
EOP:
FR-S'.1 T t 'ALE:
RESPONSE
TO REACTOR RESTART/ATWS REV' PAGE 7 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 9 Stabilize RCS Temperature:
- a. Control steam dump as necessary
- b. Verify 'the following:.
,o Core exit T/Cs STABLE OR INCREASING
o Pressure in both S/Gs STABLE OR INCREASING o
Pressure in both S/Gs GREATER THAN 100 PSIG c.
Go to Step 14 10 Verify MFW Isolation:
a.
MFW pumps
- TRIPPED b.
MFW flow control valves CLOSED
~ MFW regulating valves
~ MFW bypass valves
- b. Place A and B S/G MFW regulating valve and bypass valve controllers to MANUAL at 0%
demand.
11 Identify Faulted S/G:
o Any S/G Pressure DECREASING IN AN UNCONTROLLED MANNER Go to Step 14.
-OR-o Any S/G COMPLETELY DEPRESSURIZED
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FR-S.1 TITLE:
RESPONSE
TO REACTOR RESTART/ATWS REV' PAGE 8 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED x**xxx*xx******xx*xx**x***x***xxx**x*
CAUTION o
AT LEAST ONE S/G SHALL BE MAINTAINEDAVAILABLEFOR RCS COOLDOWN.
o IF BOTH S/GS ARE FAULTED, AT LEAST 50 GPM FEED FLOW SHOULD BE MAINTAINED TO EACH S/G.
- x ******
0' **x *****
x ***x **x**************
12 Isolate Feed Flow To Faulted S/G:
o Close faulted S/G MDAFW pump discharge valve
~ S/G A, MOV-4007
~ S/G B, MOV-4008 o
Pull stop faulted S/G MDAFW pump o
Close faulted S/G TDAFW flow control valve Manually close valves.
IF valves can NOT be closed, THEN dispatch AO to locally isolate flowpaths as necessary.
~ S/G A, AOV-4297
~ S/G B, AOV-4298 o
Verify faulted S/G MFW regulating valve and bypass valve CLOSED
~ S/G A, HCV-466 'and HCV-480
~ S/G B, HCV-476 and HCV-481 o
Verify MDAFW pump crosstie valves BOTH CLOSED
~ MOV-4000A
~ MOV-4000B o
Close faulted S/G SAFW pump discharge valve
~ S/G A, MOV-9701A
~ S/G B, MOV-9701B
I)
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FR-S.1
RESPONSE
TO REACTOR RESTART/ATWS REV 8
PAGE 9 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 13 Isolate Steam Flow From Faulted S/G:
o Verify faulted S/G ARV -
CLOSED
~ S/G A, AOV-3411
~ S/G B, AOV-3410 o
Close faulted S/G TDAFW pump steam supply valve and place in PULL STOP Manually close valves.
IF valves can NOT be closed, THEN dispatch AO to locally isolate flowpaths as necessary.
~ S/G A, MOV-3505A
~ S/G B, MOV-3504A o
Verify faulted S/G blowdown and sample valves CLOSED
~ S/G A, AOV-5738 and AOV-5735
~ S/G B, AOV-5737 and AOV-5736 o
Dispatch AO to complete faulted S/G isolation (Refer to Attachment FAULTED S/G)
EOP:
FR-S.1 LITLE:
RESPONSE
TO REACTOR RESTART/ATWS REV:
8 PAGE 10 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED
- x **x x ****%* x **x ***x ****************
CAUTION
'BORATION SHOULD CONTINUE TO OBTAIN ADEQUATE SHUTDOWN MARGIN DURING SUBSEQUENT ACTIONS.
- x ***x*****
x
% x x x x x **x ******x
- x*********
NOTE:
Adverse CNMT conditions or loss of forced air cooling may result in failure of NIS detectors.
14 Verify Reactor Subcritical:
o Power range channels LESS THAN 5%
o Intermediate range channels STABLE OR DECREASING o
Intermediate range channels startup rate
- NEGATIVE o
Core exit T/Cs
- STABLE Perform the following:
- a. Stabilize RCS temperature.
- b. Continue to inject boric acid.
IF adequate shutdown margin
- verified, THEN return to procedure and step in effect.,
IF NOT, THEN perform the following:
- a. Allow RCS to heat up.
- b. Perform actions of other FR procedures in effect which do NOT cooldown or otherwise add positive reactivity to the core.
- c. Return to Step 5.
EOP:
FR-S.1
RESPONSE
TO REACTOR RESTART/ATWS REV:
8 PAGE 11 of 11 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 15 Return to Procedure And Step Xn Effect
-END-
VL q
~
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EOP FR-S.1 TITLE:
RESPONSE
TO REACTOR RESTART/ATWS REV 8
PAGE 1 of 1 FR-S.1 APPENDIX LIST TITLE PAGES 1)
FIGURE SDM 2)
ATTACHMENT FAULTED S/G
EOP:
FR-S.1 TITLE:
RESPONSE
TO REACTOR RESTART/ATWS REV' PAGE 1 of 1 FIGURE SDM NOTE:
o Curve includes allowance for one stuck rod.
Add 100 ppm for each additional stuck rod.
o To obtain core burnup, use PPCS turn on code BURNUP.
BORON CONCENTRATION (PPH) 1800 1600 BORON INCREMENTS 20 PPH 1400 1200 1000 ADEQUATE SDM 100 PPM CONSERVATISM INCLUDED 800 600 400 OR TE 200 BURNUP INCREMENTS 100 MWD/HTU 0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 CYCLE 24 BURNUP (MWD/MTU)
(~