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

LOIA REV 07 (MC) AP-470 l

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!O l LOSS OF INSTRUMENT AIR l 1.0 ENTRY CONDITIONS 1E IA PRESS is s 90 psig, INFORMATION l JREN use this procedure. L ONLY 2.0 IMMEDIATE ACTIONS HOIE There are no imediate actions for this procedure.

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A 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 PDR

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3.0 FOLLOW-UP ACTIONS r)

't / ACTIONS DETAILS 3.1 Ensure in-house air g g-compressors are running.

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

1 3.2 Notify personnel of plant

• STA l conditions. 1

• Plant operators

• NSM e HP (notify of degraded IA conditions as a precaution for personnel using breathing air)

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

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3.0 FOLLOW-UP ACTIONS (CONT'D)

ACTIONS DETAILS >

l 3.3 _. Notify SP0 to start berm air compressors. SAP-lC SAP-ID l SAP-lE 'I

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I 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

l 2 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) PAGE 5 0F 27 LOIA

i Applicable carry-over steps:

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' 3.4 E DHR is in service AND IA PRESS < 80 psig...  :.

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' i.. ;.' .r l 3.5 E lA PRESS is < 80 psig MQ abnormal system operation exists...

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L4 FOLLOW-UP ACTIONS (CONT'D)

O b 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" l

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

AP-470 REV 07 (MC) PAGE 7 0F 27 LOIA

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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...

i 3.5 1E 1A PRESS is < 80 psig a.NJ)

N abnormal system operation exists... f 4

1 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 TB Loop 95 ft l

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 l C/ ACTIONS DETAILS 1

l i STATUS 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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AP-470 REV 07 (MC) PAGE 12 0F 27 LOIA

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

AP-470 REV 07 (MC) PAGE 13 0F 27 LOIA

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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) l ACTIONS DETAILS l

'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. I l

e Indications of Nat Circ:  !

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

.O AP-470 REV 07 (MC) PAGE 17 0F 27 LOIA

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

1 3.21 Control RCS TEMP using ADVs.

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Applicable carry-over steps:

! 3.17 3.18 11 RCP CB0 is lost, THEN trip 111 RCPs.

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

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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.

1E c.S has actuated, O 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

>O AP-470 REV 07 (MC) PAGE 21 0F 27 LOIA

I Applicable carry-over steps:

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

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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

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O ACTIONS DETAILS l

3.23 IE at any time, PZR level e Control cooldown using ADVs. I is > 250 in, I THW control PZR level by

• CONCURRENTLY PERFORM E0P 14, i

starting an RCS cooldown. Enclosure 15, E0P Temperature 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 1

3.28 E at any time, SC cooling is lost, SAP-1A -

' SAP-1B 3

THEN stop SC cooled p*

components. . M.P48 (FWP-2A FWP-2B TFWP-1A FWPllB

!. CDP-1 A ' CDP-1B

J "ARP'2A -

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

... .j 1 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. l 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)

O V 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) PAGE 27 0F 27 (LAST PAGE) LOIA