ML20204D572

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Rev 11 to AP-250, Radiation Monitor Actuation
ML20204D572
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 03/09/1998
From: Wilson T
FLORIDA POWER CORP.
To:
Shared Package
ML20204D567 List:
References
AP-250, NUDOCS 9903240244
Download: ML20204D572 (37)
v • d • e


Text

-4 RH4 REV 11 AP-250

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(J l 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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l 9903240244 990310 '4 PDR ADOCK 05000302 .

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' ) Approved by MNPO 4 7 d.eId I% ate I'7-7[

(SIGNATURE ON FILE)

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1 3.0 FOLLOW UP ACTIONS

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i. ,) ACTIONS DETAILS 3.1 Ensure auto actions of affected radiation .

monitor (s). I See Table 1 3.2 Notify personnel of piant

  • STA conditions.
  • Plant Operators l
  • NSM (evaluate plant conditions for poteni.ial entry into the Emergency Plan) 1 3.3 Ensure proper radiation 1 Ensure radiation monitor is l monitor operation. energized.

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[}s' 2 Ensure " ALARM RESET OPERATE 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 l applicable. l l

3.4 Notify Health Physics and Chemistry of radiation

, monitor actuation.

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3.0 FOLLOW UP ACTIONS (CONT'D) 1 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:  !

I Radiation Enclosure Monitor RM-Al GAS Enclosure 1. RM-Al GAS Actions.

Step 1.4 1

RM-A2 GAS Enclosure 2. RM-A2 l GAS Actions.

Step 2.4 RM-A3 Enclosure 3. RM-A3 Actions. Step 3.2 RM-A4 Enclosure 4. RM-A4 Actions. Step 4.1 RM-A5 Enclosure 5. 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) I 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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o 3.0 FOLLOW UP ACTIONS (CONT *D)

) ACTIONS DETAILS 3.8 CONCURRENTLY PERFORM the a)propriate enclosures in Radiation Enclosure tus procedure. Monitor RM-Al GAS Enclosure 1. RM-Al GAS Actions. Step 1.1 RM-A2 GAS Enclosure 2. RM-A2 GAS Actions. Step 2.1 RM-A3 Enclosure 3. RM-A3 Actions. Step 3.1 RM-A4 Enclosure 4. RM-A4 Actions. Step 4.1 RM-A5 Enclosure 5. 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. l

  • 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" ,

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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.

2.2 IE AB has NOT been

  • Ensure WGDT outlet valves are closed evacuated. (95 ft AB Rad Waste or Remote THEN notify PPO to isolate Panel):

WG system. l WDV-436 i

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 .

A Train exhaust fans are running. 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)

Y ' 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).

gad lIODINE actuation.

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)

(a) 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 l (3 I i

(.)

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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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 l

RM-A5

! 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) RMA

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