ML20204D572
| ML20204D572 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 03/09/1998 |
| From: | Wilson T FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML20204D567 | List: |
| References | |
| AP-250, NUDOCS 9903240244 | |
| Download: ML20204D572 (37) | |
Text
-4 RH4 REV 11 AP-250
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(J RADIATION HONITOR ACTUATION 1.0 ENTRY CONDITIONS J.E any of the following Atmospheric Radiation High alarms are actuated:
RM-Al GAS RM-A2 GAS RM-A3 RM-A4 RM-A5 GAS RM-A5 IODINE THEN use this procedure.
2.0 IMMEDIATE ACTIONS NOTE There are no immediate actions for this procedure.
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1 3.0 FOLLOW UP ACTIONS
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ACTIONS DETAILS 3.1 Ensure auto actions of affected radiation monitor (s).
See Table 1 3.2 Notify personnel of piant STA conditions.
Plant Operators NSM (evaluate plant conditions for poteni.ial entry into the Emergency Plan) 1 l
3.3 Ensure proper radiation 1
Ensure radiation monitor is monitor operation.
energized.
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2 Ensure " ALARM RESET OPERATE s'
CHECK SOURCE" switch is selected to "0PERATE" position.
3 Ensure high alarm setpoint is set per the applicable requirements:
)
Release Permit Radiation Monitor Setpoint Log 4
IF radiation monitor is BTfscalehig'h.
THEN ensure RANGE" switch is selected to "1M" position.
5 Observe trends on other radiation monitors, as applicable.
3.4 Notify Health Physics and Chemistry of radiation monitor actuation.
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3.0 FOLLOW UP ACTIONS (CONT'D)
ACTIONS DETAILS 3.5 IF alarm is not valid.
1 Depress " HORN SILENCE" push button for TilEN perform corrective affected radiation monitor.
actions.
2 IE radiation level is below high setpoint.
AND radiation monitor is operable, s
TiiEN GO T0 the appropriate enclosure i
in this procedure:
Radiation Enclosure Monitor RM-Al GAS. RM-Al GAS Actions.
Step 1.4 1
RM-A2 GAS. RM-A2 GAS Actions.
Step 2.4 RM-A3. RM-A3 Actions. Step 3.2 RM-A4. RM-A4 Actions. Step 4.1 RM-A5. RM-A5 GAS / IODINE GAS / IODINE Actions.
Step 5.6 3
Initiate repair efforts as required.
4 EXIT this procedure.
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3.0 F0LLOW UP ACTIONS (CONT'D)
ACTIONS DETAILS 3.6 Evacuate affected areas, 1 Determine evacuation requirements of as required.
affected area based on the following:
Radiation levels Location Work being performed Health Physics input 2
IF evacuation is required.
TREN perform the following in order:
Depress appropriate 3
evacuation alarm push button.
Notify plant personnel over PA.
(
Repeat'PA announcement.
i 3.7 Stop any activities suspected of causing the radiation monitor L.
actuation and restore systems as required.
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3.0 FOLLOW UP ACTIONS (CONT *D)
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ACTIONS DETAILS 3.8 CONCURRENTLY PERFORM the a)propriate enclosures in Radiation Enclosure tus procedure.
Monitor RM-Al GAS. RM-Al GAS Actions. Step 1.1 RM-A2 GAS. RM-A2 GAS Actions. Step 2.1 RM-A3. RM-A3 Actions. Step 3.1 RM-A4. RM-A4 Actions. Step 4.1 RM-A5. RM-A5 GAS / IODINE GAS / IODINE Actions.
Step 5.1 O
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1 3.0 FOLLOW UP ACTIONS (CONT *D)
O ac'io"s oeTaits STATUS An RMA has been reset.
3.9 WHEN all of the following 1 Ensure 1 CC exhaust fan is running:
are reset:
AHF-20A RM-Al GAS AHF-20B RM-A2 GAS 2
Start AHF-30 RM-A3 3
Notify Health Physics of AB RM-A4 ventilation restoration.
RM-A5 GAS 4
Ensure both AB supply fans are RM-A5 I0 DINE AMF-11A l
THEN restore ventilation.
AHF-11B 5
Start AHF-10 3.10 EXIT this. procedure.
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5.0 ENCLOSURE 1 RM Al GAS ACTIONS i
ACTIONS DETAILS 1.1 Stop RB purge fans.
1 Stop RB purge supply fans:
AHF-6A AHF-6B 1
2 Stop RB purge exhaust fans:
AHF-7A AHF-7B 1.2 IF RM-Al GAS indicates or 1
Select "RMA 1 MID/HI RANGE a broaches off-scale high.
CONTROLLER" to "AUT0".
TEN align RM-Al LMH valve controller.
2 IF TSC is manned.
TREN notify Accident Assessment Team of RM-Al status.
O 1.3
-LF main RB purge was Notify Health' Physics Supervisor terminated, that purge is stopped.
THEN perform compensatory actions.
Notify NSM to ensure equipment hatch is closed.
Notify PPO to ensure at least 1 personnel air lock door or temporary door is closed (Health Physics and Security may be required).
- Notify SP0 to ensure purge heaters are de-energized (480V SWGR Room):
480V HEATING AUX BUS 3-3A "AHHE-16A A RB Purge Heating Coil" 480V HEATING AUX BUS 3-4A "AHHE-16B B RB Purge Heating Coil" AP-250 REV 11 PAGE 13 of 37 RMA
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5.0 ENCLOSURE 1 RM Al GAS ACTIONS (CONT'D)
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ACTIONS DETAILS 1.4 WHEN radiation monitor can 1
Select RM-Al GAS to be reset.
" ALARM RESET" THEN reset monitor.
2 Ensure RM-Al " HORN SILENCE" is reset.
3 Ensu e "RMA 1 MID/HI RANGE CONTR011.ER" is in " MAN" 1.5 IERBpurgerestorationis
- OP-417. Containment Operating
- required, Procedure:
THEN see the appropriate plant procedure.
Section 4.5, Reactor Bldg Purge Section 4.7, RB Pressure Equalization / Mini-Purge Under Non-Accident Conditions EM-225A Post Accident RB grogenControl,asdirectedby 1
1.6 GO TO Step 3.9 in this procedure.
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5.0 ENCLOSURE 2 RM A2 GAS ACTIONS
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ACTIONS DETAILS 2.1 Ensure AHF-34A is stopped.
- Observe Events Recorder point 515
" HOT MACHINE SHOP WELDING HOOD EXH FAN" in " TRIP".
CAUTION If WGDTs are leaking into AB, hydrogen concentrations may reach explosive levels.
- Ensure WGDT outlet valves are closed evacuated.
(95 ft AB Rad Waste or Remote THEN notify PPO to isolate Panel):
WG system.
WDV-436 WDV-437 7
WDV-438 i
- Ensure WG header to vent valves are closed:
WDV-489"SWSurkeTankVentto WG Iso" (95 ft B Sea Water Room above DCT-1B)
WDV-337 "ECST Vent to WG Iso" (143 ft AB behind WDT-10A) 2.3 IE RM-A2 GAS indicates or 1
Select "RMA 2 MID/HI RANGE anroaches off-scale high, CONTROLLER" to "AUT0".
TEN align RM-A2 LMH valve controller.
2 IF TSC is manned, THEN notify Accident Assessment Team of RM-A2 status.
(3
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5.0 ENCLOSURE 2 RM A2 GAS ACTIONS (CONT'D)
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ACTIONS DETAILS 2.4 WHEN radiation monitor can 1
Select RM-A2 GAS to be reset.
" ALARM RESET".
THEN reset monitor.
2 Ensure RM-A2 " HORN SILENCE" is reset.
3 Ensure "RMA 2 MID/HI RANGE CONTROLLER" is in " MAN" 2.5 Ensure 1 train of AB exhaust fans are running.
A Train B Train AHF-14A AHF-14B AHF-14C AHF-14D i
(T 2.6 Start 1 penetration C1 cooling fan.
AHF-9A AHF-9B 2.7 IF AHU-3 restart is
- Notify SPD to start "AHU-3 HOT
- desired, MACHINE SHOP COOLING UNIT FAN" THEN start AHU-3 (119 ft Cold Machine Shop mezzanine MACHINE SHOP MCC 3 cubicle -30).
4 2.8 IF AHF-34A restart is
- Notify PPO to start AHF-34A " HOT desired.
MACH. SHOP WELD. HOOD EXH. FAN" THEN start AHF-34A (119 ft AB Hot Machine Shop).
2.9 GO TO Step 3.9 in this procedure.
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5.0 ENCLOSURE 3 RM A3 ACTIONS ACTIONS DETAILS 3.1-IF AB has NOT been
- Notify PP0 to verify closing air evacuated.
pressure is > 17 psig on AH-825-PI THEN verify dampers D 29 "D 29 D 36 AIR TO CLOSE" and D 36 are closed.
(143 ft AB Panel-15AB).
1 3.2 WHEN radiation monitor can 1
Select RM-A3 to " ALARM RESET".
be reset.
THEN reset monitor.
2 Ensure RM-A3 " HORN SILENCE" is reset.
L 3.3 Ensure 1 train of AB L
exhaust fans are running.
A Train B Train AHF-14A AHF-14B AHF-14C AHF-14D O
3.4 GO TO Step 3.9 in this
. procedure.
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i 5.0 ENCLOSURE 4 RM A4 ACTIONS
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ACTIONS DETAILS 4.1 WHEN radiation monitor can 1
Select RM-A4 to " ALARM RESET" be reset.
THEN reset monitor.
2 Ensure RM-A4 " HORN SILENCE" is reset.
4.2 Ensure 1 train of AB exhaust fans are running.
A Train B Train 1
AHF-14A AHF-14B AHF-14C AHF-140 4.3 60 TO Step 3.9 in this procedure.
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5.0 ENCLOSURE 5 RM-A5 GAS / IODINE ACTIONS ACTIONS DETAILS NOTE Chemistry Lab exhaust fans can operate while RM A5 GAS / IODINE is actuated when CC exhaust fan is running in slow speed.
5.1 IF CC exhaust fans are sto) ped.
AHF-30 THE1 ensure Chemistry Lab fans are stopped.
AHF-44A AHF-44B CAUTION With all CC ventilation stopped, the CC may reach its design limit of 95*F in 30 minutes.
O 5.2 Establish CC ventilation 1
Verify AHD-3 is open.
in emergency recirc.
2 Ensure 1 CC emergency supply fan is running:
AHF-18A AHF-18B 3 Ensure 1 CC return fan is running:
AHF-19A
_ _ AHF-19B (q
, )
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5.0 ENCLOSURE 5-RM A5 GAS / IODINE ACTIONS (CONT'D)
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' ACTIONS OETAILS NOTE If both CC coolers are isolated, the CC chiller may trip on low chill-water flowrate.
If both CC coolers are in service, the chill water pump may trip on overcurrent.
5.3 IF AHF-18A is running, 1 Notify PP0 to verify chill water is TiiEN ensure chill water is aligned to AHF-18A:
aligned.
CHV-4 "CC Cooler A Outlet Isu" is open (164 ft CC between AHHE-SA and AHHE-5B)
CHV-2 "CC Cooler B Outlet Iso" is closed (164 ft CC b Ventilation Room door)y 2
IF chill water is NOT aligned to RF-18A, THEN notify PP0 to perform the T5TTowing in order:
Throttle CHV-2 "CC Cooler B Outlet Iso" 10 turns closed.
Throttle CHV-4 "CC Cooler A Outlet Iso" 1 turn open.
Close CHV-2 "CC Cooler B Outlet Iso" Open CHV-4 "CC Cooler A Outlet Iso".
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l 5.0 ENCLOSURE 5 RM A5 GAS / IODINE ACTIONS (CONT *D)
ACTIONS DETAILS NOTE If both CC cooler; are isolated, the CC chiller may trip on low chill water flowrate.
If both CC coolers are in service, the chill water pump may trip on overcurrent.
5.4 IF AHF-18B is running.
1 Notify PPO to verify chill water is THEN ensure chill water aligned to AHF-18B:
aligned.
CHV-2 "CC Cooler B Outlet Iso" is open (164 ft CC by Ventilation Room door)
CHV-4 "CC Cooler A Outlet Iso" is closed (164 ft CC between AHHE-5A and AHHE-5B) r 2
IF ' Sill water is NOT aligned to t
XP ~.8B.
Ths.. notify PPO to perform the following in order:
Throttle CHV-4 "CC Cooler A Outlet Iso" 10 turns closed.
Throttle CHV-2 "CC Cooler B Outlet Iso" 1 turn open.
Close CHV-4 "CC Cooler A Outlet Iso".
Open CHV-2 "CC Cooler B Outlet Iso".
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5.0 ENCLOSURE 5 RM A5 GAS / IODINE ACTIONS (CONT'D)
ACTIONS DETAILS 5.5 1E activity in CC air is 1
Ensure AH-193-FC "CNTRL COMPLEX higher than outside air.
RECIRC DMPR" is set to "0" THEN override RM-A5 (AHD-3 full open).
lIODINE actuation.
gad 2
Select " DAMPER OVERRIDE" switch to "0N".
i 3
Adjust AH-193-FC "CNTRL COMPLEX RECIRC DMPR" to "10" (AHD-3 60*
open).
5.6 WHEN radiation monitor can 1
Select RM-A5 GAS / IODINE to be reset.
" ALARM RESET".
THEr. O t monitor.
2 Ensure RM-A5 " HORN SILENCE" is reset.
5.7 E ue C fans are AHF-18A.
AHF-188 AHF-19A AHF-19B 5.8 IF " DAMPER OVERRIDE" 1
Adjust AH-193-FC "CNTRL COMPLEX Eitch is "0N".
RECIRC DMPR" to "0" (AHD-3 full THEN restore CC recirc open).
damper to normal.
2 Select " DAMPER OVERRIDE" switch to "0FF" O
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5.0 ENCLOSURE 5 RM A5 GAS / IODINE ACTIONS (CONT *D)
ACTIONS DETAILS 5.9
' Align CC ventilation to
- Select both " CONTROL COMPLEX HVAC normal.
ISOLATE / RESET" switches to " RESET":
. _ A Train B Train 5.10 Restore CC ventilation 1 Start 1 CC normal supply fan:
fans.
AHF-17A AHF-17B 2 Start 1 CC return fan:
AHF-19A AHF-19B 5.11 Verify CC dampers are properly positioned.
Closed, ___ AHD-2C Open_
_ _ AHD-2E
_ _ AHD-1C AHD-1E AHD-3 l.
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5.0 ENCLOSURE 5 RM A5 GAS / IODINE ACTIONS (CONT *D)
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ACTIONS DETAILS 5.12 Restore CC exhaust fans.
1 Ensure 1 CC exhaust fan is running:
AHF-20A AHF-20B 2 Ensure 1 Chemistry Lab exhaust fan is running:
AHF-44A AHF-448 5.13 Verify CC 95 ft supply dampers are open.
AHD-12 AHD-12D (3
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5.14 Ensure AH-032-FIR. Channel A indicates approximately 35,000 cfm.
5.15 GO TO Step 3.9 in this procedure.
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p RM-Al GAS Closed:
LRV-70 LRV-71 LRV-72 LRV-73 AHV-1C AHV-10 AHV-1B AHV-1A RM-A2 GAS Stopped:
AHF-30 AHF-9A AHF-11A AHF-9B AHF-11B AHU-3 AHF-10 Table 1:
RM-A3 RM Auto Actions Stopped:
AHF-11A AHF-11B RM-A4 l
Stopped:
AHF-10 RM-A5 l
GAS / IODINE Closed:
AHD-12 AHD-2E l
AHD-12D AHD-1C AHD-2C AHD-1E Open:
AHD-3 l
Stopped:
AHF-17A AHF-17B AHF-19A AHF-19B AP-250 REV 11 PAGE 37 of 37 (LAST PAGE)
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