ML17261B114
| ML17261B114 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 06/27/1990 |
| From: | Widay J ROCHESTER GAS & ELECTRIC CORP. |
| To: | |
| Shared Package | |
| ML17261B111 | List: |
| References | |
| FR-I.3, NUDOCS 9007310044 | |
| Download: ML17261B114 (42) | |
Text
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 1 of 15 ROCHESTER GAS AND ELECTRIC CORPORATION GINNA STATION CONTROLLED COPY NUMBER TECHNICAL REVIEW PORC REVIEW DATE P
NT SUPERINTENDE T 4 >1 EFFECTIV DATE CATEGORY 1.0 REVIEWED BY:
90073i0044 900725 PDR AOOCK 05000244 P
PDC GINNASTATION START:
PATE TIME CoMPLET'ep:-
DATE TIME:
f,4 t
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 2 of 15 A.
PURPOSE This procedure provides actions to respond to voids in the reactor vessel head.
B.
ENTRY CONDITIONS/SYMPTOMS 1.
ENTRY CONDITIONS This procedure is entered from:
a.
F-0.6, INVENTORY Critical Safety Function Status Tree on a YELLOW condition.
t l
v I 0
F.
>L
EOP:
FR-I.3 TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 3 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION IF A CONTROLLED NATURAL CIRCULATION COOLDOW IS IN PROGRESS AND A VOID IN THE REACTOR VESSEL UPPER HEAD IS EXPECTED, THIS PROCEDURE SHOULD NOT BE PERFORMED.
NOTE:
Adverse CNMT values should be used whenever CNMT pressure is greater than 4 psig or CNMT radiation is greater than 10~
~ R/hr.
1 Reset CI:
- a. Operate CI reset key switch
- b. Verify annunciator A-26, CNMT ISOLATION - EXTINGUISHED
- b. Perform the following:
- 1) Reset SI.
- 2) Operate CI reset key switch.
- A'la
'VI 8
t
'1J el,
'p
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV' PAGE 4 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 2 Verify Adequate SW Flow To CCW Hx:
- a. Verify at least two SW pumps-RUNNING
- a. Perform the following:
- 1) Verify adequate power to operate two SW pumps (258 kw per pump).
IP NOT, THEN shed sufficient non-essential loads.
~ CNMT RECIRC fans
~ Charging pumps
~ IA compressors
~ PRZR heaters
~ Rx compartment cooling fans
~ Control rod shroud fans
- b. Verify AUX BLDG SW isolation valves - OPEN
~ MOV-4615 and MOV-4734
~ MOV-4616 and MOV-4735
- c. Verify CNMT RECIRC fans annunciator C-2, HIGH TEMPERATURE ALARM - EXTINGUISHED
- 2) Ensure two SW pumps running.
j 1
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV 4
PAGE 5 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 3
Establish IA to CNMT:
- a. Verify non-safeguards busses energized from offsite power o
Bus 13 normal feed - CLOSED
-OR-o.
Bus 15 normal feed - CLOSED
- b. Verify SW isolation valves to turbine building -.OPEN
~ MOV-4613 and MOV-4670
~ MOV-4614 and MOV-4664
- c. Verify at least two air compressors
- RUNNING
- d. Check IA supply:
o Pressure
- GREATER THAN 60 PSIG o
Pressure
- STABLE'R INCREASING
- e. Reset both trains of XY relays for IA to CI valve AOV-5392
- a. Perform the following:
- 1) Close non-safeguards bus tie breakers:
~ Bus 13 to Bus 14 tie
~ Bus 15 to Bus 16 tie 2)
WHEN bus 15 restored, THEN reset control room lighting.
- b. Perform the following:
- 1) Manually open valves.
- 2) Dispatch AO to reset air compressors as required.
- c. Manually start air compressors as power supply permits (75 kw each).
- d. Perform the following:
- 1) Continue attempts to restore IA (Refer to AP-IA.1, LOSS OF INSTRUMENT AIR).
- 2) Continue with Step 4.
WHEN IA restored, THEN do Steps 3e and f.
- f. Open IA AOV-5392
~hp 0
f IC I
EOP:
FR-I.3 I
TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 6 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 4
Check If Charging Flow Has Been Established:
- a. Charging pumps - ANY RUNNING
- a. Perform the following:
- 1) IF CCV flow is lost to any RCP thermal barrier OR any RCP gl seal outlet temperature offscale high, THEN dispatch AO with key to RVST gate to close seal in)ection needle valve(s) to affected RCP:
~ RCP A, V-300A
+ RCP B, V-300B
- b. Charging pump suction aligned to RWST:
o LCV-112B - OPEN o
LCV-112C - CLOSED
- 2) Ensure HCV-142 open, demand at OX.
- b. Manually align valves as necessary.
IF LCV-112B can NOT be opened, THEN perform the following:
T
- 1) Verify charging pump A NOT running and place in PULL STOP;
- c. Start charging pumps as necessary and ad)ust charging flow to control PRZR level
- 2) Dispatch AO to locally open manual charging pump suction from RVST (V-358 located in
~
charging pump room).
3)
VHEN V-358 open, THEN direct AO to close V-268 to isolate charging pumps B and C from VCT (V-268 located in charging pump room).
- c. Continue with Step 8.
WHEN charging can be established, THEN do Steps 5,
6 and 7.
~l
.j
<<Q~
4
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 7 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 5
Check If Normal CVCS Operation Can Be Established
- a. Verify IA restored:
o IA to CNMT (AOV-5392) - OPEN o
IA pressure
- GREATER THAN 60 PSIG
- a. Continue with Step 8.
WHEN IA
- restored, THEN do Steps 5
through 7.
b.
CCW pumps
- ANY RUNNING
- b. Perform the following:
- 1) IR any RCP fl seal outlet temperature offscale high, THEN isolate CCW to thermal barrier of affected RCP(s).
~ RCP A, MOV-749A and MOV-759A
~ RCP B, MOV-749B and MOV-759B
- c. Verify instrument bus D-ENERGIZED
- 2) Manually start one CCW pump.
- c. Energize MCC B.
IR MCC B NOT available, THEN perform the following:
- 1) Verify MCC A energized.
- 2) Place instrument bus D on maintenance supply.
6 Verify PRZR Level GREATER THAN 134
[404 adverse CNMT]
Continue with Step 8.
WHEN PRZR level increases to greater than 13X
[40X adverse CNMT], THEN do Step 7.
'ed%
4
'E 1
$V(
EOP:
FR-I.3 T1TLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 8 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 7 Establish Normal Letdown:
- a. Establish charging line flow to REGEN Hx - GREATER THAN 20 GPM
- b. Place the following switches to CLOSE:
~ Letdown orifice valves (AOV-200A, AOV-200B,,and AOV-202)
+ AOV-371, letdown isolation valve
~ AOV-427, loop B cold leg to REGEN Hx
- c. Place letdown controllers TCV-130 and PCV-135 in MANUAL at 25% open
- d. Reset both trains of ZY relays for AOV-371 and AOV-427 e.
Open AOV-371 and AOV-427
- f. Open letdown orifice valves as necessary
- g. Place TCV-130 in AUTO at 105'F
- h. Place PCV-135 in AUTO at 250 psig
- i. Adjust charging pump speed and HCV-142 as necessary IR RCP seal return has been established, THEN establish excess letdown as follows:.
o Place excess letdown divert
- valve, AOV-312, to NORMAL.
o Ensure CCV from excess letdown
- open, (AOV-745).
o Open excess letdown isolation valve AOV-310.
o Slowly open HCV-123 to maintain excess letdown temperature less than 195'F and pressure less than 100 psig.
o Adjust charging pump speed as necessary.
IP RCP seal return NOT established, THEN consult TSC to determine if excess letdown should be placed in service.
Ak
!h f'I'h
~>>
5P
EOP:
FR-I.3 TITLE:
RESPONSE
TO VOIDS, IN REACTOR VESSEL REV:
4 PAGE 9 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 8
Establish Stable RCS Conditions:
a.
PRZR level - STABLE AND BETVEEN 40X AND 60X b.
RCS pressure
- STABLE c.
RCS hot leg temperatures-STABLE
- a. Control charging and letdown as necessary.
- b. Energize PRZR heaters and use normal PRZR spray as necessary.
IF normal spray NOT available and letdown in service, THEN use auxiliary spray valve (AOV-296).
- c. Control steam dump and total feed flow as necessary to stabilize RCS temperature.
9 Check RCPs BOTH STOPPED Go to Step 15.
10 Check If RCS Pressure Should Be Increased:
- a. Pressure
- AT LEAST 100 PSI BELOV LIMIT ON FIGURE TECH SPEC C/D (100'F/HR)
- b. Energize PRZR heaters to increase RCS pressure by 50 psi a.
Go to Step 13.
11 Control Charging And Letdown As Necessary To Maintain PRZR Level Greater Than 134 I'40%
adverse CNMT]
gJ m "r r>,
l>
EOP:
FR-I.3 1
TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 10 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 12 Check RVLIS Indication:
- a. Level (no RCPs)
- INCREASING
- b. Level (no RCPs)
- GREATER THAN 95X
- c. Turn off PRZR heaters to stabilize RCS pressure
- d. Return to procedure and step in effect a.
Go to Step 13.
- b. Return to Step 10.
CAUTION IF RCP SEAL COOLING HAD PREVIOUSLY BEEN LOST, THEN THE AFFECTED RCP SHOULD NOT BE STARTED PRIOR TO A STATUS EVALUATION.
13 Try To Start One RCP:
- a. Establish the following conditions prior to RCP start:
o PRZR level - GREATER THAN 65X
[SOX adverse CNMT]
o RCS subcooling based on core exit T/Cs - GREATER THAN 20'R USING FIGURE MIN SUBCOOLING
- a. IR conditions can NOT be established, THEN go to Step 15.
o Bus llA or llB - ENERGIZED o
Refer to Attachment RCP START
- b. Start one RCP
0 II q l
EOP:
FR-I.3 TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE ll of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 14 Check RVLIS Fluid Fraction (any RCP running)
LESS THAN 974 Go to Step 24.
15 Direct HP To Start CNMT Hydrogen Monitors CAUTION FOLLOWING BLOCK OF AUTOMATIC SI ACTUATION, MANUAL SI ACTUATION MAY BE REQUIRED IF CONDITIONS DEGRADE.
16 Check If SI Should Be Blocked:
a.
PRZR pressure
- GREATER THAN 1750 PSIG b.
PRZR pressure
- LESS THAN 1950 PSIG
- c. Block SI a.
Go to Step 17.
- b. Decrease PRZR pressure to less than 1950 psig using normal PRZR spray.
IF normal spray NOT available and letdown in service, THEN use auxiliary spray (AOV-296).
IF
- NOT, THEN use one PRZR PORV.
17 Record RCS Pressure and CNMT Hydrogen Concentration on Attachment VENT TIME
Pg J, 0
1 4
I Q4
'I
EOP:
FR-I.3 TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV 4
PAGE 12 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 18 Establish Following RCS Conditions:
a.
PRZR level - STABLE AND BETWEEN 40X AND 60X b.
RCS pressure
- STABLE c.
RCS subcooling based on core exit T/Cs - GREATER THAN 50'F USING FIGURE MIN SUBCOOLING
- a. Control charging and letdown as necessary.
- b. Energize PRZR heaters and use normal PRZR spray as necessary.
IF normal spray NOT available and letdown in service, THEN use auxiliary spray (AOV-296).
c.
Dump steam as necessary.
d.
RCS hot leg temperatures-STABLE
- d. Control steam dump and total feed flow as necessary to stabilize RCS temperature.
19 Prepare CNMT For Reactor Vessel Venting:
- a. Verify CNMT ventilation isolation valves - CLOSED
- a. Manually close valves.
~ CNMT MINI PURGE EXH VLVs (AOV-7970, AOV-7971)
~ CNMT MINI PURGE SPLY VLVs (AOV-7445, AOV-7448)
~ CNMT AIR SAMPLE ISO VLVs (AOV-1597, AOV-1598, AOV-1599)
- b. Verify the following CNMT ventilation equipment in service:
- b. Manually start fans as power supply permits.
~ All CNMT RECIRC fans
~ One reactor compartment cooling fan
~ One control rod shroud fan
I)
'0
~
r, la r
EOP:
PR-I.3 TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 13 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 20 Determine Maximum Allowable Venting Time:
a.
. LESS THAN 3X
- b. Determine maximum venting time (Refer to Attachment VENT TIME)
21 Review Reactor Vessel Venting Termination Criteria:
o RCS subcooling based on core exit T/Cs
-LESS THAN 10'F USING FIGURE MIN SUBCOOLING
-OR-o PRZR level - LESS THAN 13X [40X adverse CNMT]
-OR-o RCS pressure
- DECREASES BY 200 PSI
-OR-o Venting time - GREATER THAN MAXIMUMTIME CALCULATED IN STEP 20
- GREATER THAN 95X
-OR-o RVLIS fluid fraction (any RCP running) - GREATER THAN 97X
1>
It~'
~
C egal T
V
F.OP:
FR-I.3 TlTLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV 4
PAGE 14 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED CAUTION VENTING SHOULD BE STOPPED IP ANY VENTING TERMINATION CRITERION IN STEP 21 IS EXCEEDED.
NOTE:
The reactor vessel head vents should not be opened unless specifically directed by PORC.
22 Vent Reactor Vessel:
a.
Open train A Rx vessel head vent valves
~ SOV-590
~ SOV-592
- a. IP either valve fails to open, THEN close both valves and open train B valves.
~ SOV-591
~ SOV-593
- b. Any venting termination criterion - EXCEEDED
- c. Close all vent valves
- b. Continue venting.
VHRN any venting termination criterion is
- exceeded, THEN do Steps
- 22c, 23, 24 and 25.
23 Check RVLIS Indication o
Level (no RCPs)
- GREATER THAN 95K Increase RCS pressure to value recorded in Step 17.
Return to Step 15.
-OR-o Fluid'raction (any RCP running)
- GREATER THAN 97X
tj'y
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 15 of 15 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED 24 Check PRZR Level STABLE Control charging and letdown as necessary to stabilize PRZR level.
25 Return To Procedure And Step In Effect
-END-
.0 l
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV 4
PAGE 1 of 1 FR-I.3 APPENDIX LIST TITLE PAGES 1)
FIGURE MIN SUBCOOLING 2)
FIGURE TECH SPEC C/D 3)
FIGURE HYDROGEN FLON RATE 4)
ATTACHMENT VENT TIME 5)
ATTACHMENT RCP START 6)
ATTACHMENT AUX BLDG
4 t
'J ~
C j1 0
\\
A.
EOP:
FR-I.3 TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 1 of 1 FIGURE MIN SUBCOOLING NOTE:
Subcooling Margin = Saturation Temperature From Figure Below [-] Core Exit T/C Indication RC 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
S PRESSURE (PSIG)
RCS PRESSURE INCREMENTS 20 PSIG SUBCOOLED REGION NMT NORMAL CNMT INADEQUATE SUBCOOLING REGION TEMPERATURE INCREMENTS 10'F 200 250 300 350 400 450 500 550 600 650 700 CORE EXIT SATURATION TEMPERATURE ('F)
J l
e lf
~5 P
EOP:
FR-I.3 TITLE:
RESPONSE
TO VOIDS IN REACTOR VESSEL REV:
4 PAGE 1 of 1 FIGURE TECH SPEC C
D RCS 2500 2400 2300 2200 2100 2000 1900 1800 1700 1600 1500 1400 1200 1100 1000 900 800 700 600 500 400 300 200 100 0
PRESSURE (PSIG) 60'/
RCS PRESSURE INCREMENTS 20 PSIG 100'P/HR ACCEPTABLE REGION POR RCS REPRESSURIZATION TEMPERATURE INCREMENTS 10'P 50 100 150 200 250 300 350 400 450 500 RCS COLD LEG TEMPERATURE ( 'F)
C D
4 i
4 Ai i4t 2
EOP:
FR-I.3
RESPONSE
TO VOIDS IN REACTOR VESSEL REV 4
PAGE 1 of 1 HYDROGEN FLOW RATE (SCFM) 4000 CNMT HYDROGEN 3500 FLOW RATE INCREMENTS 50 SCFM 3000
%500 2000 1500 1000 500 RCS PRESSURE INCREMENTS 50 PSIG 500 1000 1500 RCS PRESSURE (PSIG) 2000 2500
r z
1.,
4$
~
I 4 Wr.
EOP:
FR-P. 2
RESPONSE
TO ANTICIPATED PRESSURIZED THERMAL SHOCK CONDITION REV:
2 PAGE 2 of 5 A.
PURPOSE This procedure provides actions to respond to a limited overcooling condition or to an overpressure condition at low temperature.
B.
ENTRY CONDITIONS/SYMPTOMS" 1.
ENTRY CONDITIONS This procedure is entered from:
a.
F-0.4, INTEGRITY Critical Safety Function Status
- Tree, on either branch YELLOW condition.
EOP:
FR-P.2 TITLE:
RESPONSE
TO ANTICIPATED PRESSURIZED THERMAL SHOCK CONDITION REV 2
PAGE 4 of 5 STEP ACTION/EXPECTED RESPONSE
RESPONSE
NOT OBTAINED (Step 1 continued from previous page)
- h. Minimize cooldown from faulted S/G(s):
- 1) Close faulted S/G(s)
TDAFW pump steam supply valve(s).
~ S/G A, MOV-3505A
~ S/G B, MOV-3504A
- 2) IF both S/G(s) faulted, THEN control feed flow at 50 gpm to each S/G.
- 3) IF any S/G NOT faulted, THEN isolate all feedwater to faulted S/G(s) unless necessary for RCS temperature control.
IF a faulted S/G is necessary for RCS temperature
- control, THEN control feed flow at 50 gpm to that S/G.
2 Check If SI Has Been Terminated NO SI PUMPS RUNNING Go to Step 5.
3 Check RCS Pressure WITHIN LIMITS OF FIGURE TECH SPEC C/D FOR 100'F/HR Decrease RCS pressure to within limits of Figure TECH SPEC C/D using normal PRZR spray.
IF normal spray NOT available and letdown is in service, THEN use auxiliary spray.
IF auxiliary spray NOT available, THEN use one PRZR PORV.
IF IA NOT available for PORV, THEN refer to Attachment N2 PORVS.
I