ML20216F018

Rev 7 to AP-470, Loss of Instrument Air

ML20216F018
Person / Time
Site:	Crystal River
Issue date:	04/08/1998
From:	FLORIDA POWER CORP.
To:
Shared Package
ML20216F000	List: ML20216E996 ML20216F018 ML20216F032
References
AP-470, NUDOCS 9804160378
Download: ML20216F018 (27)

Text

l LOIA REV 07 (MC)

AP-470 l

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LOSS OF INSTRUMENT AIR l

1.0 ENTRY CONDITIONS INFORMATION 1E IA PRESS is s 90 psig, ONLY l

JREN use this procedure.

L 2.0 IMMEDIATE ACTIONS HOIE There are no imediate actions for this procedure.

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Approved by NNP0

[e[U/b-Date 04/08/98

(SIGNATURE ON FILE)

AP-470 PAGE 1 of 27 LOIA l

9804160378 980409 PDR ADOCK 05000302 P

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3.0 FOLLOW-UP ACTIONS r)

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ACTIONS DETAILS 3.1 Ensure in-house air g g-compressors are running.

SAP-1B IAP-1A IAP-1B i

3.2 Notify personnel of plant STA conditions.

1 Plant operators NSM e

HP (notify of degraded IA conditions as a precaution for personnel using breathing air) k.)

Announce on PA " Terminate all use of station air".

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3.0 FOLLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS 3.3 Notify SP0 to start berm l

air compressors.

SAP-lC SAP-ID l

SAP-lE

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3.4 __ J1 at any time, DHR is in 1

J1 A DHR Train is in service, i

service, M notify PP0 to manually l

E IA PRESS < 80 psig, throttle the following valves l

l M establish manual (75 ft AB A DH Room):

control of DHR cooling, l

M GO TO Step 3.27 in DCV-17 "A DH Cooler Bypass this procedure Control" DCV-177 "A DH Cooler Outlet Control" l

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JF B DHR Train is in service,

!N M notify PP0 to manually throttle the following valves l

(75 ft AB B DH Room):

DCV-18 "B DH Cooler Bypass Control" DCV-178 "B DH Cooler Outlet l

Control" 3

GO TO Step 3.27 in this procedure.

l 3.5 JF at any time, IA PRESS 1

Depress Rx trip push button is < 80 psig, E any abnormal system 2

CONCURRENTLY PERFORM E0P-2, operation exists, Vital System Status M trip Rx and Verification, beginning with I

GO TO Step 3.11 in this Step 2.1 procedure.

3 GO TO Step 3.11 in this procedure.

O AP-470 REV 07 (MC)

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i Applicable carry-over steps:

CN 4, 'j E DHR is in service AND IA PRESS < 80 psig...

3.4

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3.5 E lA PRESS is < 80 psig MQ abnormal system operation exists...

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L4 FOLLOW-UP ACTIONS (CONT'D)

Ob ACTIONS DETAILS 3.6 1E at any time, IA PRESS is > 90 psig, IliEt{ EXIT this procedure.

3.7 Bypass IA dryers.

• Notify SP0 to open IAV-31 "IADR-1 &

j IADR-2 Bypass Iso" (95 ft TB behind 1ADR-1).

3.8 Place both IA dryer

• Notify SP0 to ensure all the prefilters and following valves are open afterfilters in service.

(95 ft TB by IADR-1):

IAV-Il "Prefilter IAFL-2A Inlet Iso" IAV-12 "Prefilter IAFL-2B Inlet

\\pj Iso" IAV-14 "Prefilter IAFL-2B Outlet Iso" IAV-544 "Prefilter IAFL-2A Outlet Iso" IAV-18 "Afterfilter IAFL-3B Inlet Iso" IAV-545 "Afterfilter IAFL-3A Inlet Iso" IAV-19 "Afterfilter IAFL-3A Outlet Iso"

__ IAV-20 "Afterfilter IAFL-3B Outlet Iso" O

AP-470 REV 07 (MC)

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i Applicable carry-over steps:

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3.4

[E DHR is in service AND IA PRESS < 80 psig...

1E 1A PRESS is < 80 psig a.NJ) abnormal system operation exists...

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3.6 1E IA PRESS is > 90 psig THEN, EXIT this procedure.

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I 3.0 FOLLOW-UP ACTIONS (CONT'D1 ACTIONS DETAILS 3.9 jf IA PRESS does NOT e Notify available personnel to i

recover, isolate individual air supply root l

Itifh inspect IA and SA valves on loop headers with leaks:

l' loops for leaks.

TB Loop 119 ft l

TB Loop 95 ft AB Loop 95 ft 3.10 WBIE IA PRESS is

> 90 psig, l

THEN EXIT this procedure.

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l 3.0 FOLLOW-UP ACTIONS (CONT'D) n 1

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ACTIONS DETAILS l

STATUS i

1 The following conditions exists:

e Rx is tripped e IA PRESS is :s; 80 psig and any abnormal system operation exists 3.11 Initiate EFIC.

1 Depress both "EFW INITIATE" push buttons on EFIC channels A and B.

2 Ensure at least one EFWP running:

EFP-1 EFP-2 O

3 Ensure level in available OTSGs is at or trending toward required level.

(Rule 3, EFW Control) l l

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3.0 F0LLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS 3.12 Initiate MSLI and MFLI.

1 Depress " MAIN STM ISOLATION" push buttons on EFIC channels A and B for both OTSGs.

2 ___ Depress " MAIN FEED ISOLATION" push buttons on EFIC channels A and B for both OT9Gs.

3 Select MBVs to " MAN" and select all FW isolation valves to "CLOSE":

FW valve A OTSG B OTSG LLBV FWV-31 FWV-32 MBV toggle

" MAN"

" MAN" MBV FWV-30 FWV-29 SUBV FWV-36 FWV-33 Cross-tie FWV-28 Suction FWV-14 FWV-15 4 Ensure both MFWPs are tripped:

A OTSG B OTSG FWP-2A FWP-2B 5 Ensure all MSIVs closed:

A OTSG B OTSG MSV-412 MSV-413 MSV-411 MSV-414 O

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3.0 FOLLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS

? 13 Align backup air supply to e Notify SP0 to open IAV-676 "ADV ADVs.

Backup Air Supply Iso" (119 ft TB behind FWHE-38).

3.14 Isolate letdown.

1 Close MUV-49 2

If MUV-49 will NOT close, IE!i close MUV-567 3.15 Isolate normal makeup.

1 Maintain PZR level > 80 in with MUV-24 2

Close MUV-27 1

O 3.16 Maintain MUT level

• Cycle appropriate BWST to MVP valve 2 55 in, to raise MUT level:

MUV-73 MVV-58 3.17 If at any time, RCP CB0 is

lost, RCP-1A IE!! trip all RCPs.

RCP-lC RCP-1B RCP-10 O

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Applicable carry-over steps:

3.17 If RCP CB0 is lost, I!!EH trip All RCPs.

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L9 FOLLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS

'8 E at any time, SW low i

l flow for an RCP is RCP-1A indicated by either of the ~ollowing:

RCP-lc "PP SEAL & WTR FLOW" RCP-1B l

lamp extinguished on RCP control switch RCP-1D "RC PUMP CLG WTR FLOW LOW" annunciator alarm is illuminated T!i@ trip affected RCP.

1 3.19 E at any time, all RCPs e

Ensure level in available OTSGs are tripped, is at or trending toward Nat IEW establish Nat Circ.

Circ level.

[ Rule 3, EFW Control]

e Monitor all 4 Tems for Nat Circ indications.

l e Indications of Nat Circ:

Thet tracking Tinese Tem tracking OTSG Tset AT (That - IcW) stable or lowering l

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Applicable carry-over steps:

3.17 IE RCP CB0 is lost, ItiEH trip all RCPs.

3.18 lE SW low flow on any RCP, I!!EH trip affected RCP.

3.19 LE all RCPs are tripped, lHEN establish Nat Circ.

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3.0 FOLLOW-UP ACTIONS (CONT'D) i [

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ACTIONS DETAILS l

3.20 Reduce RCP seal injection e Notify PP0 to perform the following l

to 2: 3 gpm per pump.

in order (95 ft AB MU valve alley):

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Open MUV-34 " Seal Injection Control Bypass Outlet Iso".

Open MUV-35 " Seal Injection Control Bypass Inlet Iso".

Throttle MUV-17 " Seal Injection Control Bypass".

Close MVV-14 " Seal Infection Control Inlet Iso".

3.21 Control RCS TEMP using ADVs.

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Applicable carry-over steps:

3.17 11 RCP CB0 is lost, THEN trip 111 RCPs.

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3.18 lE SW low flow on any RCP, IEN trip affected RCP.

3.19 If all RCPs are tripped, IMH establish Nat Circ.

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3.0 FOLLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS 3.22 Ensure emergency RB 1 At least 1 Emergency SW Pump cooling is in service, running:

(Rule 5, EDG Control]

SWP-1A SWP-18 2 At least 1 Emergency SW Raw Water Pump running:

RWP-2A RWP-2B 3 Proper RB cooling unit operation:

1E ES has NOT actuated, ItiEN ensure both ES selected RB cooling units running in slow speed.

O 1E c.S has actuated, ItiEH ensure only 1 ES selected RB cooling unit running in slow speed.

4 CI valves to RB cooling units closed:

SWV-151 SWV-152 SWV-355 5 SW valves to RB cooling units open:

l SWV-353 SWV-354 l

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I Applicable carry-over steps:

r) 3.17 E RCP CB0 is lost, THEN trip all RCPs.

,(g 3.18 E SW low flow on any RCP, THEN trip affected RCP.

3.19 E G RCPs are tripped, J_HG establish Nat Cire.

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3.0 FOLLOW-UP ACTIONS (CONT'D1

)

O ACTIONS DETAILS 3.23 IE at any time, PZR level e

Control cooldown using ADVs.

is > 250 in, THW control PZR level by CONCURRENTLY PERFORM E0P 14, starting an RCS cooldown. 5, E0P Temperature i

I Log.

i 3.24 Break condenser vacuum.

1 Select condenser ARPs to

" PULL TO LOCK":

ARP-1A ARP-18 2 Open condenser vacuum Bkrs:

ARV-48 ARV-49 O

3.25 Ensure WG compressors are e Notify PPO to select WG compressors stopped.

to " PULL TO LOCK" (WDCP-3 Radwaste Control Panel):

WDP-1A f

WDP-1B 3.26 Isolate GW to AS

• Notify SP0 to close ASV-53 "GS desuperheater.

DESUPERHEATER OUTLET 150" (119 ft TB at AS Hdr).

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i Applicable carry-over steps:

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is' 3.17 E RCP CB0 is lost, THEN trip all RCPs.

3.18 E SW low flow on any RCP, THEN trip affected RCP.

3.19 E all RCPs are tripped, THEN establish Nat Circ.

3.23 E PZR level is > 250 in, THEN control PZR level...

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l 3.0 FOLLOW-UP ACTIONS (CONT'D) l ACTIONS DETAILS 3.27 E at any time, IA valves

fail, THEN select failed valves to their failed position.

See OP-411, Instrument and Station Air, Enclosure 4, Loss of IA Equipment Failure Modes 3.28 E at any time, SC cooling SAP-1A

' SAP-1B is lost, 3

THEN stop SC cooled components.

M.P48 p*

(FWP-2A FWP-2B TFWP-1A FWPllB

!. CDP-1 A

' CDP-1B

J "ARP'2A

1. ARP-2B 3.29 E at any time, IA PRESS is > 90 psig, EJE GO TO OP-411, Instrument and Station Air System, Section 4.8, Restoration From AP-470 3.30 Bypass IA dryers.

• Notify SP0 to open IAV-31 "IADR-1 &

IADR-2 Bypass Iso" (95 ft TB behind 1ADR-1).

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l Applicable carry over steps:

3.17 E RCP CB0 is lost, M trip all RCPs.

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3.18 E SW low flow on any RCP, THEN trip affected RCP.

l 3.19 E All RCPs are tripped, THEN establish Nat Cire.

3.23 E PZR level is > 250 in, THEN control PZR level...

3.27 E IA valves fail, M select failed valves to...

3.28 1E SC cooling is lost, E stop SC cooled components.

4 3.29 IE IA PRESS is > 90 psig, THEN GO TO OP-411...

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3.0 FOLLOW-UP ACTIONS (CONT'D)

OV ACTIONS DETAILS 3.31 Place both IA dryer e Notify SP0 to ensure the following prefilters and are open (95 ft TB by IADR-1):

afterfilters in service.

IAV-Il "Prefilter IAFL-2A Inlet Iso" I AV-12 "Prefilter I AFL-2B Inlet Iso" IAV-14 "Prefilter IAFL-2B Outlet Iso" IAV-544 "Prefilter IAFL-2A Outlet Iso" IAV-18 "Afterfilter IAFL-3B Inlet Iso" IAV-545 "Afterfilter IAFL-3A Inlet Iso" IAV-19 "Afterfilter IAFL-3A Outlet Iso" IAV-20 "Afterfilter IAFL-3B Outlet Iso" 3.32 JE IA PRESS does NOT e Notify available personnel to

recover, isolate individual air supply root 111@ inspect IA and SA valves on loop headers with leaks:

loops for leaks.

TB Loop 119 ft TB Loop 95 ft AB Loop 95 ft 3.33 WH._@ IA PRESS is

_> 90 psig, I11@ GO TO OP-411, Instrument and Station Air System, Section 4.8, O

Restoration From AP-470 AP-470 REV 07 (MC)

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