ML20204D578
| ML20204D578 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 03/09/1999 |
| From: | Joshua Wilson FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML20204D567 | List: |
| References | |
| AP-513, NUDOCS 9903240245 | |
| Download: ML20204D578 (15) | |
Text
TG REV 10 AP-513 x
T0XIC GAS 1.0 ENTRY CONDITIONS JF any of the following conditions exist:
Toxic gas is detected at CR-3 Toxic gas is detected at Units 1 and 2 Notified by Fossil Unit of toxic gas that may affect CR-3 THEN use this procedure.
2.0 IMMEDIATE ACTIONS NOTE 1
(
There are no immediate actions for this procedure.
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3.0 FOLLOW UP ACTIONS w
ACTIONS DETAILS 3.1 Select both" CONTROL COMPLEX l'VAC I.SOLATE/ RESET" switches to
.IS0" 3.2 Notify personnel of plant STA conditions.
Plant operators NSM (evaluate plant conditions for potential entry into Emergency Plan)
Fossil Units TSC (if activated) l
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CAUTION v
With all CC ventilation stopped, the CC may reach its design limit of 95*F in as little as 30 minutes.
3.3 Verify all CC dampers are i
properly aligned.
AHD-12 closed i
AHD-12D closed AHD-2C closed AHD-2E closed i
l AHD-1C closed j
AHD-1E closed AHD-3 open i
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3.0 FOLLOW UP ACTIONS (CONT *D)
-ACTIONS DETAILS.
3.4 2 at any time, toxic gas
- Stop all CC supply and return fans:
'evels in Control Room t$be AHF-17A AHF-17B un E"
a ons AHF-18A AHF-18B AHF-19A
_ _ AHF-19B 1
Don air packs.
NOTE Chemistry Lab exhaust fans can operate while toxic gas is actuated when CC exhaust fan is running in slow speed.
3.5 JE CC exhaust fans are A
sto) ped.
AHF-30 V
TH 9 ensure Chemistry Lab fans are stopped.
AHF-44B AHF-44A i
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Applicable carry-over steps:
3.4 If toxic gas levels in the Control Room become uncomfortable..
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3.0 FOLLOW UP ACTIONS (CONT *D)
ACTIONS DETAILS 3.6 Determine the source of
- Notify PPO to report local toxic gas toxic gas actuation.
monitor indications (164 ft CC south wall):
AH-648-CE AH-652-CE AH-649-CE AH-653-CE Review the following computer points a
(group 9):
S263 Train A C1 2
S297 Train B Cl 2 S298 Train A S02 S299 Train B S02 Notify Health Physics to sample the following areas for toxic gas:
Control Complex Berm Area O
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Applicable carry-over steps:
3.4 JF toxic gas levels in the Control Room become uncomfortable.
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"4 3.0 FOLLOW UP ACTIONS (CONT'D)
ACTIONS DETAILS 3.7 Evacuate affected areas as 1 Determine area evacuation based on required.
the following:
Source of toxic gas Atmospheric conditions Inhabited or not
' Evacuation route 2
.I_E evacuation is required.
THEN perform the following in order:
Depress appropriate evacuation alarm push button as required.
J Notify plant personnel over PA.
[V3 Repeat PA announcement.
3.8
-WHEN Health Physics reports toxic gas concentration in outside atmosphere has lowered to safe levels.
THEN continue in this procedure.
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3.0 FOLLOW UP ACTIONS (CONT'D) l Ll ACTIONS DETAILS l
3.9 IE toxic gas monitors'are 1 Ensure 1 CC supply fan is running:
in valid alarm.
THEN purge toxic gas from AHF-17A intake duct.
AHF-17B AHF-18A AHF-188 2 Ensure l'CC return fan is running:
AHF-19A AHF-19B 3
Ensure AH-193-FC "CNTRL COMPLEX RECIRC DMPR" is set to "0" (AHD-3 full open).
4 Select " DAMPER OVERRIDE" switch to "0N".
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Adjust AH-193-FC "CNTRL COMPLEX RECIRC DMPR" to "10" (AHD-3 60' open).
3.10 WHEN toxic gas monitor alarms reset, THEN continue in this procedure.
3.11
'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".
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3.0 FOLLOW UP ACTIONS (CONT'0)
-ACTIONS DEIAILS 3.12 Align-CC ventilation to-
- Select both " CONTROL COMPLEX HVAC normal.
ISOLATE / RESET" switches to " RESET".
A Train B Train 3.13 Restore'CC ventilation.
1 Ensure 1 CC supply fan is running:
AHF-17A AHF-17B AHF-18A AHF-18B 2 Ensure 1 CC return fan is running:
AHF-19A AHF-19B 3.14 Verify CC dampers are properly positioned.
Closed AHD-2C Open AHD-2E AHD-1C 1
AHD-1E AHD-3 t
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o 3.0 FOLLOW UP ACTIONS (CONT'D)
. 'd -
ACTIONS DETAILS 3.15 Restore CC area exhaust 1 Ensure 1 CC exhaust fan is running:
. fans.
AHF-20A
'AHF-20B 2 Ensure 1 Chemistry Lab exhaust fan is running:
AHF-44A AHF-44B 3
Start AHF-30 1
3.16 Verify CC 95 ft supply dampers are open.
AHD-12 AHD-12D 3.17 Ensure AH-032-FIR. Channel A indicates approximately 35,000 cfm.
3.18 EXIT this procedure.
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