ML20065C589

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Rev 5 to Procedure AP-581, Loss of NNI-X
ML20065C589
Person / Time
Site: Crystal River 
Issue date: 03/18/1994
From:
FLORIDA POWER CORP.
To:
Shared Package
ML20065C588 List:
References
AP-581, NUDOCS 9404050237
Download: ML20065C589 (19)
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LOSS OF NNI-X J.0 ENTRY CONDITIONS 1E a loss of NNI-X AC or DC power exists IBEN use this procedure.

2.0 INNEDIATE ACTIONS o

There are NO Immediate Actions in this procedure.

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1 This Procedure Addresses Safety Related Components

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AP-581 PAGE 1 of 19 LONNIX l

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1 AP-581 REV 5 PAGE 2 of 19 LONNIX

3.0 FOLLOW-UP ACTIONS

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ACTIONS DETAILS Note Control board instrumentation may be verified with the Redundant Instrument Panel during performance of this procedure.

3.1 Stabilize the plant with

1. Valid instruments include:

valid instruments o RCS Press / RC-158-PI2

/ RC-159-PI2 oT

/ E-*MI hat oT

/ RC-5A-TI2 o PNdLevel / RC-1-LIR1

/ RC-1-LIR3 o FDW Flow

/ SP-8A-FIR 1 o Turb Hdr

/ SP-10A-PIR1 o A DH Flow / DH-1-FI4-1 o B DH Flow / DH-1-FI2

2. Position instrument selector switches to the NNI-Y powered instrument

,e8 3.2 Verify SASS modules o A red Trip light on the SASS swapped to the alternate module indicates that the channel channel has swapped to the alternate instrument 3.3 Control RCS pressure based For loss of NNI-X DC the following

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on plant conditions using:

equipment is available for pressure control in the MANUAL mode:

o PZR heaters l

o PZR spray o

PZR htr banks D and E l

0 PORV o

RCV-14 o

RCV-10 f%

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AP-581 REV 5 PAGE 4 of 19 LONNIX

3.0 FOLLOW-UP ACTIONS (CONT'D)

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ACTIONS DETAILS v

3.4 Ensure MUV-31 controller IE MUV-31 controller is is selected to " HAND."

NOT energized, IjiG ensure the following:

o VBDP-3 Bkr #38 is closed.

o 24V DC Backup Power Supply, located in NNI Cabinet 3 Top Row, is energized.

3.5 Ensure MUV-16 controller Conditions for RCP Seal Injection is selected to " HAND" are as follows:

o MUV-16 will transfer to manual and maintain its prior control value o RCP Seal Injection flow indicators fail to mid-scale and will NOT respond to changes in flow o MUV-16 can be operated in " HAND" 3.6 If letdown isolation o Select "MUV-49 HIGH TEMP BYPASS"

occurs, switch to the " BYPASS" position.

Id3 bypass the high TEMP isolation o Open MUV-49.

AND re-establish letdown flow.

l 3.7 Maintain PZR level 2 50".

o MUV-31 will transfer to manual and maintain its prior control value o Letdown flow control, MUV-51 is

operable, o Makeup control, MVV-31 is available in " HAND."

3.8 Notify SOTA of plant conditions.

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AP-581 REV 5 PAGE'6 of 19 LONNIX..

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3.0 FOLLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS 3.9 Determine the status of o Observe the 4 power supply NNI-X DC power.

. monitor lights located in NNI Cabinet 3, Row 6, Module 15.

o NNI-X DC power is energized if at least 1 POS and 1 NEG light is.

lit.

3.10 E NNI-X DC is energized M the following equipment is operable:

o Auto PZR spray control.

o - RCV-14, PZR Spray Valve o Auto PORV control.

o RCV-10, PORV o Auto PZR heater o Banks D and E control.

o Manual PZR level o MUV-31 controller in " HAND" control.

o Manual RCP Seal o MUV-16 controller in " HAND" Injection flow control.

o OTSG "B" TBVs in "AUT0" o MSV-11 & MSV-14,."B" 0TSG Turbine Bypass Valves 9J 3.11 Ensure Makeup o Verify SW cooling 'to in service Demineralizer protection.

Letdown Heat Exchangers.

o E NNI-X AC is not energized, M Bypass the Makeup Demineralizers:

1. Open/ Ensure'open MUV-124 MUV-200 MVV-117
2. Close/ Ensure closed:

MUV-133 MUV-116 o E NNI-X DC is not energized, M Monitor Letdowr, Temperature for increasing trends.

o E Letdown Temperature reaches 130*F and maintains an increasing trend, THEN bypass the Makeup Demineralizers:

1. Open/ ensure open:

MUV-124 MUV-200 MVV-117

2. Close/ ensure closed:

MUV-133 MUV-116 O

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3.0 F0LLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS

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3.12 Refer to Enclosure 2 for unreliable instrumentation i

3.13 Ensure the conditions Refer to Enclosure 1.

i maintained by the affected i

interlocks are not exceeded.

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3.14 WHEN restoring power to NNI-X, IBEN GO TO OP-501, Reactor Non-Nuclear-Instrumentation, beginning i

with' step'4.1.1

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O AP-581 REV 5 PAGE 9 of 19 LONNIX

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L Interlocks Affected by a Loss of NNI-X U

INTERLOCK DC DE-ENERGIZED AC DE-ENERGIZED th 4

RCP START Disabled Activated Tc TEMPERATURE (will not (start prevented)

START INTERLOCK prevent start)

RCP START, SEAL Disabled Disabled INJECTION FLOW (will not (will not START INTERLOCK prevent start) prevent start) l MUV-49, HIGH Disabled Disabled LETDOWN TEMPERATURE (will not close valve)

(will not close INTERLOCK valve)

MUV-112, MAKE-UP Disabled Disabled TANK LOW-LOW LEVEL (will not transfer (will not transfer INTERLOCK upon LOW-LOW MUT level) upon LOW-LOW MUT level)

PZR HEATER Disabled Disabled MODULATING BANKS (will not control in (will not control in l

manual or auto) manual or auto) l PZR HEATER Disabled No Effect i

ON/0FF BANKS (will not control in auto)

PORY Disabled No Effect (will not Auto open)

RCV-14, PZR Disabled No Effect SPRAY VALVE (will work in manual)

BORIC ACID TANKS Disabled Disabled LOW LEVEL (will not turn (will not turn INTERLOCK off htr) off htr)

BORIC ACID TANKS Disabled Htr fails on when HIGH/ LOW (will not turn htr selected to TEMPERATURE on/off on low /high "AUT0" (due to INTERLOCK temperature) instrument string failure AP-581 REV 5 PAGE 11 of 19 LONNIX

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AP-581 REV 5 PAGE 12 of 19 LONNIX

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Page 1 of 4 Unreliable Instrumentation Due to Loss of NNI-X DC Power C

INSTRUMENT TITLE ICS PANEL RC-1-LI2 Uncompensated PZR Level RC-4-TI RCS Unit Tn RC-4A-TIl RCS Loop A NR T3 RC-4B-TIl RCS Loop B NR Th RCS Unit T*WR T RC-5-TI RCS Loop A RC-5A-TIl c

RC-5B-TIl RCS Loop B WR T, RC-7A-TAI Loop A Tm RC-78-TAI LMp B T RC-8-DTI Xf3 DiffeYential T*

RC-12-TAI Controlling T RC-14-FIR RCS Total Flo 7 RC-14A-FI Loop A RCS Flow RC-14B-FI Loop B RCS Flow SP-1A-LIl A Steam Generator Full Range SP-1A-LI2 A Steam Generator S/U Range SP-18-LIl B Steam Generator Full Range SP-1B-LI2 B Steam Generator S/U Range SP-3A-TI A Steam Generator Downcomer Temperature SP-3B-TI B Steam Generator Downcomer Temperature f *~~N, SP-5A-TI FW Temperature to A Steam Generator y/

SP-5B-TI FW Temperature to B Steam Generator SP-6A-PI2 A Steam Generator Pressure SP-6B-PI2 B Steam Generator Pressure SP-7A-FI Loop A S/U FW Flow SP-7B-FI Loop B S/U FW Flow TGF PANEL SP-4A-TI A Main Steam Temperature SP-4A-TIR(A)

A Main Staam Temperature Recorder PSA PANEL CD-100-LI Hotwell Level l

MU-7-FIl RCP-1A Seal Flow MU-7-FI3 RCP-1C Seal Flow MU-7-FI2 RCP-1B Seal Flow l

MU-7-FI4 RCP-1D Seal Flow MU-14-LIR1 MUT Level MU-17-PIR MUT Press on MU-14-LIR1 MU-24-FI RC MU Flow MU-27-FI RCP Total Seal Flow O

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AP-581-REV 5 PAGE 14 of 19 LONNIX 7

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Page 2 of 4 Unreliable Instrumentation Due to Loss of NNI-X DC Power 1NSTRUMENT TITLE ES PANEL BS-1-FIl A RB Spray Flow CF-1-PIl A CFT Pressure CF-1-PI3 B CFT Pressure CF-2-LII A CFT Level CF-2-LI3 B CFT Level DH-1-FIl A LPI Flow DH-2-TIl A DH Cooler Outlet Temperature DH-6-TIl A DH Suction Temperature DH-38-FIl LPI Crossover Flow MU-23-FIl HPI loop B-1 WR Flow MU-23-FI2 HPI Loop A-2 WR Flow REDUNDANT INSTRUMENT PANEL DH-1-FIS A DHP Flow RC-1-LI3 PZR Level RC-2-TIl PZR Temp RC-3A-PI3 Loop A WR Pressure RC-4A-T13 Loop A WR T3 RC-4B-TI3 Loop B WR T h RC-5A-TI3 Loop A WR T f)

RC-5B-TI3 Loop B WR T

'v RC-131-PI2 RCS LR Pressure SP-1A-LI6 A OTSG Oper Level SP-1A-LI4 A OTSG S/U Level SP-1B-LIS B OTSG S/U Level SP-1B-LI6 B OTSG Operating Level SP-6A-PI3 A OTSG Pressure SP-6B-PI3 B OTSG Pressure SP-7A-FIl Loop A S/U FW Flow SP-8A-FIl Loop A MFW Flow SP-8B-FIl Loop B MFW Flow MU-4-FIl-1 Letdown Flow MU-14-LIl MUT Level MU-24-FIl Makeup Flow n

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Unreliable Instrumentation due to Loss of NNI-X AC Power

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INSTRUMENT TITLE ICS PANEL RC-2-TI PZR Temp RC-4-TI RCS Unit Th RC-4A-TIl RCS Loop A NR T3 RC-4B-TIl RCS Loop B NR T3 RCS Unit T'WR T, RC-5-TI RCS Loop B RC-5A-TIl RC-5B-TIl RCS Loop B WR T, l

RC-7A-TAI RCS Loop A T,y, l

RC-78-TAI RCS Loop B T RC-8-dTI RCS Differenffal T*

RC-12-TAI Controlling T,y, RC-14A-FI Loop A RC Flow -

RC-148-FI Loop L RC Flow RC-14-FIR Total RCS Flow SP-1A-LIl A OTSG Full Range Level SP-1A-LI2 A OTSG Startup Range Level SP-1B-LIl B OTSG Full Range Level SP-1B-LI2 B OTSG Startup Range Level l

SP-3A-TI A OTSG Downcomer Temp SP-3B-TI B OTSG Downcomer Temp

]p SP-5A-TI Loop A FW Temp SP-5B-TI Loop B FW Temp SP-6A-PI2 A OTSG Pressure l

SP-68-PI2 B OTSG Pressure SP-7A-FI Loop A Startup FW Flow SP-78-FI Loop B Startup FW Flow i

TGF PANEL SP-4A-TI A Main Steam Temp i

SP-4B-TI B Main Steam Temp SP-4A-TIR(A)

A Main Steam Temp SP-4B-TIR(B)

~B Main Steam Temp PSA PANEL-MU-5-TI Letdown Temp MU-7-FIl RCP-1A Seal Flow i

MU-7-FI3 RCP-1C Seal Flow I

MU-7-FI2 RCP-1B Seal Flow MU-7-FI4 RCP-1D Seal Flow MU-17-PIR MUT Press on MU-14-LIR1 l

MU-24-FI Makeup Flow MU-27-FI RCP Total Seal Flow l

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Unreliable Instrumentation due to loss of NNI-X AC Power INSTRUMENT TITLE ES PANEL BS-1-FIl A RB Spray Flow CF-1-PIl A CFT Pressure CF-1-PI3 A CFT Pressure CF-2-LII A CFT Level CF-2-LI3 B.CFT Level DH-1-FIl A DH Removal Flow DH-2-TIl DHHE-1A Suction Temp DH-6-TIl DHP-1A Suction Temp DH-38-FI LPI Crossover Flow REDUNDANT INSTRUMENT PANEt, MU-24-FIl Makeu) Flow RC-48-T13 Loop 3 WR T RC-58-TI3 RCSLoopBNRTc RC-68-DTIl RCS Loop B Differential T, SP-1A-LI6 A OTSG Operating Level SP-1B-LI6 A OTSG Operating Level.

j SP-6A-PI3 A OTSG Pressure i'

SP-68-PI3 B OTSG Pressure O

SP-8A-FIl

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Loop A MFW Flow SP-88-FIl Loop B MFW Flow l

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AP-581 REV 5 PAGE 19 of 19 LONNIX

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