ML19345H296

Forwards Info to Resolve SER Open Item 1.6.10 Re Fire Protection,Identified in 810409-10 Meeting W/Nrc.Thirty Oversize Drawings Encl.Aperture Cards Are Available in PDR

ML19345H296
Person / Time
Site:	Summer
Issue date:	05/14/1981
From:	Nichols T SOUTH CAROLINA ELECTRIC & GAS CO.
To:	Harold Denton Office of Nuclear Reactor Regulation
Shared Package
ML19345H297	List: ML19345H296
References
NUDOCS 8105190382
Download: ML19345H296 (32)

Text

{{#Wiki_filter:. SOUTH CAROLINA ELECTRIC a gas COMPANY POST orrtCE Box 764 cotuwein, Soum CAnouuA es*is we,pu, .r...c.av encum, May 14,1981 s "[ ~ bs T. C. hicwoLs,Ja. '/ / uveu on n. f %Y sn$4 9-U 7, = b Mr. Harold R. Denton, Director h Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commt ssion g Washington, D. C. 20555'

Subject:

Virgil C.' Summer Nuclear Station Docket No. 50/395 SER Open Item 1.6.10

Dear Mr. Denton:

On !.pril 9-10, 1981 South Carolina Electric and Gas Company met with the Power Systems Branch and the Fire Protection Branch to discuss SER open items 7 1.6.10 regarding fire protection. Seven items were identified for action. Thos items identified for SCE&G response are provided in this letter. 1. Show that hot shorts will not prevent hot shutdown by showing that-controls are adequately isolated by switches on the CREP, or other means. Further show that alternate control power is available in the event that fire trips normal control power before transfer is achieved. Response: See Attachment 1, 2 and 3 2. Provide a list of equipment needed for hot shutdown and cold shutdown. Response: See Attachment 4 3. Confirm that the use of controls, other than those on the CREP is acceptable to achieve colde shutdown. Response: This is an NRC action item. Mr. Choprs has confirmed by phone that it is acceptable. 4. Confirm that documentation has been provided which shows that seal injection is not required. Response: This is an NRC action item. f 8105190St&

Mr. Harold R. Denton May 14, 1981 Page Two

5.. Resolve the apparent conflict of criteria with regard to lockout of RHR valves to prevent spurious operation.

Response

Mr. Chopra has responded that the requirements of NRC Branch Technical Position RSB-5-1 as it applies to use of these valves during normal shutdown must be met. SCE&G will proceed accordingly. It hould be noted that this is being carried as a licensing condition in the SER (item 1.8.10). The appropriate design modification or acceptable alter-native will be provided in accordance with this license condition. 6. Provida a revised discussion of the consequences of spurious operation of the PORV's to include the existance of CREP controls for two of the three PORV's and.the existence of the reactor makeup system control on the CREP. Response: See Attachment 5. 7. Deconstrate that routing of instrumentation on the CREP is independent of the CREP. Response: See Attachment 6. The responses given in this letter should provide sufficient information to resolve SER open item 1.6.10. If you have any questions, please let us know. Very truly yours, T. C. Nichols, Jr. RBC:TCN:rh Enclosures cc: V. C. Summer G. H. Fischer T. C. Nichols, Jr. John Ruoff w/ enclosures D. A. Nauman w/ enclosures l W. A. Williams, Jr. f R. B. Clary l A. R. Koon A. A. Smith J. B. Knotts, Jr. J. L. Skolds B. A. Bursey w/ enclosures

0. S. Bradham w/ enclosures i

H. N. Cyrus H. E. Yocom w/ enclosures ISEG RPCF File w/ enclosures i y.

- _~ P ATTACHMENT 1 i DRAWING NUMBERS - B-208-032 EF 34A & B -B-208-032 EF 35A & B B-208-032 EF 36A & B B-208-032 EF 37A & B-B-208-032 EF 38A & B B-208-032 - EF 39A & B B-208-082 RC 51 B-208-082 RC 50 IMS-28-428 B-208-021 CS 59A & B B-208-021 CS 60A & B B-208-021 CS 83 A, B & C B-208-021 CS 84 A, B & C B-208-021 CS 85 A, B & C B-208-021 CS 86 4 e f r 6 \\ i n ) -gn-ry;pg e em,g ,,%~e_- y9r+,4 y mfp q g, ppg -?--

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ATTACHMENT 2 TABLE OF EQUIPMENT THAT HAVE CONTROLS ON THE CREP ~ ~ITE!! EQUIPMENT LOC. OF DRAWING. POWER POWER TRA14 .._NO. FUNCTION NUMBER CONTROLS NO. ' SOURCE'1 SOURCE 2 SW1 1 Stec.n Generator a. LI-477 B CREP 1MS-28-428 N/A XPN7213 43/TSCB Level E-210-390 b. LI-487 B CREP 1MS-28-428 N/A XPN7213 43/TSCB E-210-390 c. LI-497 B CREP 1MS-28-423 N/A XPN7213 43/TSCB E-210-390 2 Open/Close Steam IFV-2030 MS CREP & MCB B-208-067 MCB N/A 43/2030 Supply Valve to MS46,47A,47B Turbine 3 Modulate Flow Contro 1 IFV-3531 EF CREP & MCB B-208-032 MCB XPN7200B 43/EFM Valves a. EF34A & B b. IFV-3541 EF CREP & MCB B-208-032 MCB XPN7200B 43/EFM EF35A & B c. IFV-3551 EF CREP & MCB B-208-032 MCB-XPN7200B 43/EFM EF36A & B d. IFV-3536 EF CREP & MCB) B-208-032 MCB XPil?200A 43/ EFT EF37A & B e. IFV-3546 EF CREP & MCB B-208-032 MCB XPN7200A 43/ EFT EF38A & B f. IFV-3556 EF CREP & MCB B-208--032 MCB XPN7200A 43/ EFT EF39A & B 4 Steam a. PI 2000 A .CREP 1MS-28-428 .N/A XPN7213 43/TSCB Generator Pressure E-210-390 b. -PI 7010 A CREP 1MS-28-426 N/A XPN7213 43/TSCB l E-210-390 c. PI 2020 A CREP 1MS-28-428 N/A XPN7213 43/TSCB4 E-210-390 5 Condensate Storage LI 3631 B CREP IMS-28-423 N/A l Tank Level-E-210-390 N/A XPN7213 6 Reactor Coolant a. TI 413 A CREP 1MS-28-428 N/A XPN7200A 43/TSCA System Hot Leg b. TI 423 A CREP 1MS-28-428-N/A XPN7200A 43/TSCA Temperature c. Tl 433 A CREP 1MS-28-428 N/A XPN7200A 43/TSCA' 7 Reactor Coolant a TI 410 A CREP 1MS-28-428 N/A XPN7213 43/TSCB. System Cold Leg E-210-390 j Temperattre b . TI 420 A CREP 1MS-28-428 L N/A XPN7213 43/TSCB, l E-210-390 d [ c TI.430 A 'CREP 1MS-28-423 N/A XPN7213 43/TSCB' i E-210-390 ..a j i..-__

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ATTACHMENT 2 TABLE OF EQUIPMENT THAT PA7E CONTROLS ON THE CREP 1 TEM l EQUIPMENT LOC. OF DRAWING POWrR POWER TRANSFER t'O. FUNCTION NUMBER CONTROLS NO.

• SOUR "1 SOURCE 2 SWITCH

~ 8. Reactor Coolant a. PI-402 D CREP IFG-28-428 N/A XPN7213 43/TSCB System Pressure E-210-390 b. PI-403 D CREP IMS-28-428 N/A XPN7213 43/TSCB E-210-390 1 9. Open/Close Pres-a. PCV-445 A CREP & MCB B-208-082 MCB XPN7200A 43/445A surizer Power, RC-51 Operated Relief b. PCV-444 B CREP & MCB B-208-082 MCB XPN7200B 43/444B Valve RC-50 10. Pressurizer Pres-PI-455 B CREP IMS-28-428 N/A XPN7213 43/TSCB sure Indicator E-210-390 11. Pressurizer Level LI-459 B CREP IMS-28-428 N/A XPN7213 4;/TSCB Indicator E-210-390 1 12. Open/Close Boric Acid XVG-8104 B CREP & MCB A B-308-021 XMClDB2Y,9EH TO BE 43-CSO9 PF0VIDED Tank Line Valves to CS-0" Charging Pumps 13. Stop/ Start Boric XPP-13B-CS CREP & MCB B-208-021 XMClDB2Y TO BE 43-CS02 Acid Transfer CS02 PROVIDED Pump (B) 14. Charging Flow Con-FCV-122-CS CREP & MCB IMS-28-428 MCB XPN7200A 43/122 trol Valve 15. Open/Close Letdown a LCV-459-CS CREP & MCB B-208-021 MCB XPN7200A 43/459 Lines to Volume CS59A & B Control Tank b. LCV-460-CS CREP 6 MCB B-208-021 MCB XPN7200A 43/460 CS60A & B c. PVT-8149A-CS CREP & MCB B-208-021 MCB XPN7200A 43/8149A CS83A, B & C d. PVT-8149B-CS CREP & MCB B-208-021, MCB XPN7200A 43/8149B CS84A, B &.C e. PVT-8149C-CS CREP & MCB B-208-021 ! MCB XPN7200A 43/8149C CS85A, B & C f. XVT-8152-CS CREP & MCB B-206-021 MCB XPN7200B 43/8152 CS-86 m ~.

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- ATTACHMENT 2 2.- ] j ', <g TABLE OF EQUIPMENT THAT.HAVE CONTROLS ON THE CREP DRAWING POWER POWER TRs ITEM EQUIPMENT LOC.-OF ~ NO. TSOURCE?1 SOURCE 2 -SI NO. FUNCTION NL"c;BER CONTROLS' 16. Boric Acid Tank a. LI-161 A CREP IMS-28-428 N/A XPN7213 N/A Level E-210-390 b. LI-163 A CREP IMS-28-428 -N/A XPN7213-N/A \\..ip , pjg&l, E-210-390 l 17. Source and Inter-a. NI-36 A .CREP & MCBI IMS-23-428 CB N/A N/A mediate Range Nucle-ar Instrumenta-

b. ' NI-32 A CREP & MCB l*

,IMS-28-428 CB N/A N/A i [-h tion / 18. Volume Control Tank LI-112 CREP IMS-28-428 'CB N/A .NA-Level 19. Pressurizer Relief LI-470 A .CREP IMS-28-428 N/A XPN7213 N/A Tank Level E-210-390 l l-20. Low Pressure Let-FI-150 A CREP ) IMS-28-428 CB. N/A N/A l down Flow 21. Charging Flow FI-122 B CREP IMS-28-428 N/A N/A 22. Charging Pressure PI-121 A CREP IMS-28-428 CE N/A 'N/A' 23. Emergency Borate FI-110 A CREP IMS-28-428 CB N/A N/A Flow 24. Start /Stop Ser-a. XPP-39ASW CREP & MCB B-208-101 XSWlEA To be 43SW( vice Water Pumps SWOl provided b. XPP-39BSW CREP &.MCB B-208-101 .. XSFlEB To be 43SWC provided SWO2 c. XPP-39CSW CREP'&'HCB B-208-101 X3W1EA/B To be 43SWC SWO3,04' provided 9 NN Y-

3 ,NSFER ITCil REMARKS See Note 2 See Note 4 See Note 2 l i i See Note 2 See Note 2 See Note 2 See Note 2 1 See Note 5 2 See Note 5 3 See Note 5 a I e i e N f )

ATTACHMENT 2 TABLE OF EQUIPMENT THAT HAVE CONTROLS ON THE CREP ITEM EQUIPMENT LOC OF DRAWING POWER POWER TRANl SOURCE 1 SOURCE 2 SWI' NO. FUNCTION KUMBER CONTROLS NO. i 25. Reactor Building TI-9203 B CREP IMS-28-428 N/A XPN7213 43/TSCE Temperature E-210-390 h MCB - Main Co-1 trol Board CB - Control Building XPN7200A - Control Room Evac. Panel [CREP) XPN7200B - Control Room Evac. Panel [CREP) XPN7213 - Control Room Pvac. T'anel - lCREP) Note 1 - Transfe c switcai'isciates control building s Lgnal Note 2 - Indicat 3r not required to achieve cold shut <fown but is incluiled as a possible aid to operations and cou ld be subject to loss from a postul<ited fire. Note 3 Alterna te power is not re<luired since the v,tive' falls open on loss of power and/or air. -The function desired is-to open the valve ~and s : art the turbine driven amergency feedwater pump. Once.the, ump is started, emergency feed-<ater flow ca i be controlled.by modulating. flow control ~ valves IFV -3536-EF, IW-354li-EF, and IFV -3556-EF. Note 4 - Sampliru of primary, system for_ boron concen : ration;may be_used in_ lieu of_puc lear _instrumentatiE_ __.. _. p n.ved fro'm tLe mairccontrol board. "he valve Note 5 - Controls for service water pump discharge vs ives will-be.'re l automat:.cally open on start of the service water.pumos.

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4 ATTACilMENT 3 CREP/MCB TRANSFER SWITCilES The transfer switches for valves and pumps which receive alternate power are shown on-the elementaries forwarded by~ CGGS-23356. The train A and B CREP are each provided with a transfer switch for associated indicators. The A panel transfer switch operates one relay and the B transfer switch operates four relays. The contacts from these relays are used in the indication circuits to isolate remote indicators (the remote indicators are located in the technical support center). During normal plant operation the relays are energized to allow remote and CREP indication. When the transfer switch is in the bypass mode (or power is lost) the relays deenergize and isolate the remote indication from the CREP. The function of this transfer is shown on the attached sketches. [ I I t J t 1 r I f

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~ h [ T. t - ca.h swiscwd L s 7 - T. \\. : e.3 5 + m.n.r 3 I, 4. ~ AYTACilNENT 4 ~ l of 5 VIRGIL C. SiltittFR COLD SiluTDOWN fittWWE RCS IIEAT LOCATION E ,,SFP. OF CONTROL. PEftAl:ES gl'NENT # FtmCTION 1. Operate Emergency feedwater System 4. Start /Stop ttutor Draven Pumps XPP-2IA-EF A Switchgear (KSWIDA) & PICH 4 XPP-2tu-EF B Switthgear (XSWIDu) & HCu f. b. Start /Stop Turbine Driven Puer XPP-8-EF - Open/ Clone Steam Supply Valve to Turbine IFV-2030-tts A/B CREP & HC8 f .NCTE 3 c. HoJulate Flow Control Valves IFV-3531-EF B CREP & HCB llandwheel provided for local, manual control. IFV-3541-EF B CFEP & HCD 17anJwheel provided for local, manual cont rol. ItV-3551-EF B CIWt E itCB f( llanJwheel provide.1 fut local, manual control. IFV-3536-EF, A Ckt? 1 NCD r )(. IlanJwheel provided for local, manual control. IEV-3546-EF A CHEP & HCB .g IlanJwheel provideJ for local, manual control. p { IIV-3556-EF A CREP & ttCB .p( llanJwheel proviJcJ for local, manual cont rol. b J. Open/Close Seavice Water Supply XVG100lA-EF A ttCC (XHCIDA2X) & HCB M llanJwheel provilcJ for local, manual control.

• l to Emergency Feedwater System XVGIO0lu-EF B

HCC (XHCIDB2X) & tlCB Ilan.twheel proviJcJ for local, manuel cor. trol. u" for Long Term Cooling XVG1002-EF B flCC (XHCIDR2X) & HCB -W ll4nJwheel provided for local, manual control. l XVG1003-EF A HCC (XtCIDA2X) & HCB Ilandwl.cel provi.lcl for local, manual contral. XVG1037A-EF A ttCC (X?ICIDA2X) & HCD ll ndwheel provide.1 for lusal, m.inual cont rol. XVC10370-EF B HCC 1XilCIDB2X) & ttCB 4 llanJwheel provided f or local, manual control. 2. Operate Steam Dump Systene a. Open/Close Haan Steam Power IPV-2000-NS XA/XB Local & t1CB ban.twheel provided f or local, manual control. kelief Valves IPV-2010-HS XA/XB Lacal & HCB flanJwhcci provided for local, a.anual control. q l t'V-2020-ilS XA/Xu Loral & HCR llanJwhcci prove.16J lur local, manual control. 3. In.'ication

o a.

Steam Generator f.evel LI-477u 8 CHEP f See Note I LI-487B B CkEP .)( See Note I k I.1-4973 8 CHLP W See Note I un Il-477A I (ISOL.) 1.ocal EF Pim.p Station -d( See Note 2 LI-4tilA II (ISOL.) Local EF Pump Station M See Nute 2 D LI-497A ill (ISOI..) Im al EF Pump Station yi. See slote 2 l.I-475 II (1S01..) tics f %) l LI-476 Ill (ISOL.) HC8 4 .gime, LI-485 II (ISOL.) !!Ch 4 s Ll-4B6 III (1501..) itCD g ( L1-495 II (ISOL.) 11011 l LI-496 Ill (ISoL.) HCn 4 ~ U P l = O .c, j N 5 '.h e

• b gy.,. u,. < -

',0 '. -[ ' "l l ?,_ _y. n <~ s.

• .y ATTAClltlENT 4 2 of W VINCIL C. hurtilER Col.D Sill!TDOWN REtioVE kCS IIEAT LOCATION FitrtTION EQUIPt!ENT #

SEP. OF CONTROL. M680Il REMAKES b. Steam Cener. tor Pres.ne PI-2000A B CREP 4-See Nute i PI-2010A B CUP See Note I ti-2020A B "%P g 3ce Nate I PI-474 II (ISOL.) MCB 4 PI-475 Ill (ISOL.) HCB PI-484 II (ISOL.) flCB E PI-485 Ill (ISOL.) flCB f PI-494 II (ISOL.) vth PI-495 Ill (ISOL.) HCB c. Condensate 3torage Tank Level LI-363tB B CRLP See Note I LI-3631A B ticu J. Reactor Coil.nt System Ilot Les T3-Al3A A CREP 44 tg p Temperature TI-423A A CREP A3{s TI-433A A CREP t f. TI-413 I (ISOL.) MCB 9g i ,7 P TI-423 I (ISOL.) HCB g

• l e.

Neactor Coolant System Cold Les TI-410A B CREP t-M See Note I y Temperature TI-420A B CREP f p(- See Note 1 9 TI-430A Bc CHEP 9g See Nute t 71-410 IV (l.,' L ) MCh gg TI-420 IV (ISOL.) HLB p g f. Reactor Coolant Systra. Pressure PI-402D R CHEP t4 See Note t Q PI-403A B CREP yg See Note I PI-402 IV (ISOL.) tlCB PI-403 I (ISOL.) tlCB

• tM 4.

O erator kitil System P m a. Start /Stop kliR Pumps XPP-3tA-Hit A Switcl. gear (XSWIDAI) & HCB T XI'P-3 t B-kil B Switti.g.ar (XSWIDul) & HCH T m b. Open/Close kHH Suction Valves XVC8 701 A-l.fi A HCC (XttCillA2X) ~ HCB t ma from Reactor Coulant System XVG870 lil-Ril A HCC (XttCIDA2Y) & HCB i o Xvcu702A-kit B McC (XHCIDB2Y) & t:Cu T Xvca102a Ril B NcC (XticloB2Y) & tlCB t p r-- w~ .w .~ O s s M s f,:i p h y, y w. ~ % ; e. 4.. -: e

' N.* h".*

• [*

t -~ d.. ..,y. ._; n -:. f-ATTAClutt.NT 4 3 of 8 VIRGIL C. StettitM Cold Silutix)WN RfDtJCE tS PRESStikE IDCATION E UIPflENT # SFP. OF CONTime. FJNCTicd ktNakus Fl!NCTION J ?. Vent Pressurizer to Pressurizer heisef Tank a. Open/Close Frensurizer Power PCV-445A A CREP & ifC8 Og.eratcJ Relief Valve PCV-4440 8 CHEP & NC8 2. Isolat-Asc =ulators a. Restore Power to Valvem XVG8808A-SI A HCC (XilCIDA2X) & ilCB XVG88053-Si 8 MCC (XttCIDb2Y) & HCu XVG3808C-Si A HCC (XtlCIDA2X) & ttCh b. Close Valves XVC8808A-SI A NCC (X?!CIDA2X) & HC8 XVC88088-SI, 8 NCC (XtlCIDB2T) & HC8 ,4 XVG8808C-SI A HCC (XitCIDA2X) & HC8 o 3. Indicatios. ~ s-a. Pressurimer Piessure Indicator PI-455A B CHEP -t See Note I N PI-455 I (ISOL.) HC8 t PI-456 II (ISOL.) HCB g9 b. Pren. azer Level Indicator LI-459B B ChtP .)( y See Note I LI-459C I (ISOL.) Local EF Pw p Station gf See Note 2 LI-459A I (ISOL.) HCB NT LI-460 II (ISOL.) HCu MT g JEl3 c:D if

X:3 p.

O w r-- w ~ >= u 03 g i. 5 e p. . 3

.'..jp p. 'dht,it,

yr4 - ... 4 f 4 g ',.g l- 'j ' 7,%. (~g. < s .,,y .r

g, *.v ,; Y r I'. e q _ ~ ATTAClitTNT 4 4 of a VIRGIL C. St?lt:0H COI.h SittflDtWN B0HA1E b Ft!NCTION EQtitPt1ENT # SEP. 0 (L ktMARES

• aaa;ing System l.

a. Start /Stop Charging Pumps XPP-43A-CS A Switchgear & HCB (ISWIDA) NT Switchgear & HCB (ISWIDH) Switchgear & 81CB (XSVIDA/XSWIDB)f t XPP-43D-CS B XPP-43C-CS A/D g a tv Open/Close !!oric AciJ Tank XVC8104-M B CREP (XMCIDB2Y) & HCD Line Valves %. Charging Pumps XVD8331-CS Local ttanual hanJwhect operate.l. XVD8329-CS Local ttanual hanJwheel operateJ. XVD8323A-CS Local ttanual banJ.l.cel operateJ. XVD8323B-CS Local Manual I.and.;.ect uperated. c. Open/Close RWST Line to LCVil5!!-CS ..A PICC (DtCIDA2Y) & HCB r f Charging Pumps LCVil5D-CS B HCC (IrtCIDB2Y) & 11CB 9 o d. Start /Stop Boric AciJ XPP-33A-CS XA llCC (KMCIDAi't) & MCB P Transfer Pumps Xt>P-13H-CS XB CEEP (Xt!CIDB2Y) & HCB 1 ! C"o {i e. Charging Flow Control Valve FCV-122-CS 2 CREP & ttCB 0 NT 2. LetJown System (if requircJ) 4. Noss.at LetJown O - Open/Close Lettown Lines to LCV459-CS XA CREP & HCB t Volume Control Tank LCV460-CS XA CREP & ilCD t PVT 8149A-CS A CRI P & ttCB 4 PVT 814911-CS A CHEP & HCh t PVT 8149C-CS A CNEP & ttCD t Q XVT8152-CS B CHEP & ttCa 3. Indication summmes y t)< Buric Acid Tank Level LI-161A B CHCP See Note I m.. h Ll-163A B CREP See Note I Z g LI-ID6 1 (ISOL.) HCu LI-161 IV (IS08..) flCD

s L1-108 11 (ISCL.)

HCB LI-163 IV (ISOL.) ttCB y b. RV5TLevel LI-990 I (ISOL.) HCB u N Li-998 II (ISOL.) itch dY s CD O

QM.&:W.[.;

= kW.L + - =

b 1'E S.'.

f. $:

' A. c ' ', 's. y-

• e

_4 n - e < -: ;;. s.- ~

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t ATTAClit1Ef. 7 4 $,g g VIRGIL. C. Surititit COLD SittritMtWN ISORATE l.0 CATION _ E UIPttENT # SEP. OF CONTHOl. FUNCT/oNS stHruss J FU WTION c. Activity Indication - Sample f rom kitit Pump Discharge - Source and intermediate Range NI-164 II (ISOL.) CHEP & HCH See Note 2 Nucle.nr Instrumentatiosi NI-32A !! (ISOL.) CREP & HCB Sampling of primary system for baron contentrations may be uncJ in lieu al nuclear instrue ntation. J. alune Cont rol Tank Le.el LI-ll2 3 CHEP g1 See Note 2 LI-il5 1 NCll g See Note 2 c. Pressurizer Helief Tank Level LI-470A Il CHEP Src Note I LI-470 .* I ftCB f. Low Pressure Letilown Flow FI-150A 2 CHLP t See Note 2 o~ F1-150 HCh T See Note 2

• j g.

Charging Fluw F1-122B 2 CRt'P .X i See Note 2 b l-F1-122A 2 HCh ft See Note 2 i 9 See Note 2 h. Charging Pressure PI-12tA 2 CktP 4h See Note 2 PI-121 2 ftCB ,g 4. Emergency Borate Flow FI-Il0A 3 CRtP See Note 2 F1-ilo 3 NCu See Note 2 g llXl3 CD W w 3:= r=- V w M N CD O ~ [e ee e

1. =

,4

' ca,f,,, '[. * ,e '* ' S r' j _.y. m_-, r-e- s s o . 3 e AT*4ClltitNr 4 VikCIL C. SutitlER & or B COLD SiluTDukN SIIPP0HT SYSTLits IDCAT!oN FUNCTION EQUIPNF.NT f SEP. OF CONTitOL f() Q 7lC}) NLMAl(ES 1. Service Water System s. Start /Stop Service Water Pumps XPP-39A-SW a CREP & HCB "I 4 ~ X PI'- 39 8 - St. B CkEP & HCD 7% XPP-39C-SW A/B CREP & HCB 7)( b. Start /Stor Service Water Bouster XPP-45A-SW A Switchgear (XSWlhA1) & HCB T4 Pumps XPP-45B-SW B Switchgear (XS5MBU & tlCB ff c. Open/Close Industrial XVB-3tt0A-SW A tiCC (XHCIDA2X) a. HCB -14 Ilan.lwheel provided 6 ar local, manual cont rol. Cooling Water Valves XVB-18108-SW B HCC (XtlCinu2Y) & HCB -t f ilandwheel prov Je.1 for local, manual cc,nt rol. to Heactos Biilding Coating Units XVG-3ttlA-SW A HCC (XNCISA2X) & HCB -t )( llandwheel provided for local, manual control. XVG-3111B-SW B tlCC (XtlCIDB2Y) & HCD t$ Ilan.lwheel provided fur local, manual control. XVC-3112A-SW.. 3 itCC (X!!CIDA2Y) & tlCB -f )tr llandwlieel prowlJed for local, manual control. HCC (XHCIDB2Y) & tlCB

• t )(-

llandwl.cel provided for local, manual control. XVC-3tl2B-SW A J. Open/Close Service Water Valves XVil-3106A-SW A flCC (XHCIDA2X) & tlCF, M llandwl.ect provided hn local, manual coutrui. 3 to Reactor Building Couling Units XVB-31060-SW B HCC (XtlCIDB2Y) & HCB t)( llauJwheel provideal for lural, manual rout rol. I XVC-3IDFA-SW A ilCC (XtlCIDA2X) & HCB W llan.twheel provi.lcJ for local, manual control. XVG-31078-Sk 8 tlCC (XtlCIDB2Y) & hcl! g llandl.wcel provided fur locas, aunual control. 8 C 2. Component Cooling Water Systein a. Start /Stop Component Cool trg XPP-IA-CC A Switchgear & HCB PSWIDA) T Water Pump XPP-ID-CC B Switthgear & ticu (XSWillu) T XPP-IC-CC A/B Swittligear & HCB (XSWIDA/XSWIDB) t 3. Chilled Water Syste. Start /Sto Challers XHX-IA-VU A Switchgear (XSWIDAl) & NCB TN CD a. n XHX-IB-Vll 11 Switchgear (XSWtpul) & ttCB tN XIlX-IC-VU A/B Switthgear (XWIDAl/XSWIDul) Tf y le. Start /Stop Chilled Water Pumps XPP-48A-VU A Switchgear (XSWIDA2) & hcl! Y/ h XPP-4811-VU B Swittligear (XSWIDB2) & tICB t )(- p XPP-48C-VU A/It Swalalegrar (XSVIDA2/Xr,VIDil2) & ttCB t( r g 4. IIVAC Systems i 4. Start /Stup Heactor fluilding XAA-1 A-All A Switci p e (XSWIDAI) & HCB t/s Fan is XFN-644-All. Coolang Units XAA lb AH B Swittliver (XSWIDA2) & HCB TX Fan is X6N-64b-Ali. Xs A-2A-All A Switthgear (KSWIDAl) & tlCB tf Fan is E d-65A-AW. ( XAA-28-All B Switchgcar (X.'WIDul) & flCB tW Fan is XbN-65b-Alf. u", N s. y a b [ e 6_. N

a Y,. - , 'f; n , ry ? j a 74 ~" ..,g c e J TT ACitt!t.NT /6 y og g VINCal C. SiltitlER COID SIIUTDOWN SulTOHT SYSIENS LOCAtl0N i SEP. OF CONIROL fUMf.IlCN RHMS FilNCTION giltt!)NTJ b. Start /Stop St Puap Room XAll-I A-VL A HCC (XtlCll1A2Y1 & ilVAC Fan is XFN-46A-VL. Cooling Unat6 XAll-I B-V L B HCC (XflClpB2Y) & IIVAC Fan is XFN-460-VL. XAll-2-VL C tsCF (Xi'N0040) & ilVAC Fan is XtN-47 VI.. Xi'N0040 is local panel r fur C SI/clearging pump availlaries. c. Start /Stop RHH Pum.p Hoom XAH-4A-VL A HCC (XHCIDA2Y) & ilVAC t Fan is XFN-49A-VL. Cooling Units XAll-40-VL B HCC (XtlCIDB2Y) & llVAC 1 Fan is X6N-49tFia.. d. Start /Stop Auxiliary Building XAll-32-VL A HCt, (XPCIDA2Y) & HVAC T4 Fan is XFN-832-VL. PICC Switcligear Cooling Units XAll-3 3-V L B HCC (XHCIDB2Y) & llVAC 4W Fan is XtN-133-VI.. e. Battery Room Cooling Units XAll-24 A-All A HCC (XtlCIDA2X) & IIVAC t4 Fan is XFN-384-Ao XAll-74 B-All D HCC (XtlCIDil2X) & llVAC 7 t.& Fan is Xt N-38u-All. f. Service Water Pump Ilouse XENudOA-AH A NC (XflCIEAIX) & llVAC M os Couling Units XI N -800- All B HCC (Xf1CIElllX) & PVAC f f. ~P E li g. ESF Switcl. gear Room Costing XAll-6-VL A HCC (XttCIDA2X) & IIVAC -f.4 Fan is XFN-50-VL. Units XAll-A-VL B HCC (X N IDC2Y) & kVAC t4 Fan is X6N-76-VL. 1:9 h. S p. Switch Room Cooling Units XAH-19A-VL A HCC (XtlCIDA2X; & HVAC -t f Fan is XIN-106A-VL. XAll-19 B-V L B HCC (XtlCIDil2Y) & ilVAC yn Fan is XtN-1068-VL.

i. Es.ergency Feedwater Pump XA!!-II A-VL A

HCC (XtlCIDA2X) & HVAC /c Fan is XFN-83A-VL. Cooli g Units XAll-l l D-VL B HCC (XHCIDB2X) & !!VAC 4 Fan is XtN-810-VI.. J. Battery Room Enhaust Fans XFN-39 A-All A NCC (Xt1CIDA2X) & IIVAC t )( XI N -39 8-All B HCC (XilCIDil2X) & IfVAC T.)6 N k. Relay Room Cooling Units XAll-13A-All A NCC (XHCIDA2X) & HVAC tX Fan is XFN-36A-All. XAH-138-All B HCC (XtlCIDil2Y) & HVAC t-j(r Fau in ItN-36H-All. 90 t) 1. Ce d rol kuu.a Cooling Units X All-12A-Ali A MCC (XtICIDA2X) & ilVAC fy Fan is XFN-32A-AH. XAH-1211-All B HCC (XtlCIDb2Y) & ilVAC 44 Fan is XtN 32U-All. m n===== m. Diesel Cenerator Room Fans XtN-45A-All B NCC (XttCIDh2Z) & IIVAC .t )(. Q { g Xt N-45 B-All B HCC (XtlCIDH22) & llVAC 9y XI N-75 A-All A HCC (X!!CIDA2Z) & HVAC y %f N-75D-All A flCC (XilCIDA2Z) & ilVAC 3:* e v N cDo l g_, % 4, ;. w Ef y W. z n. , j... 8 o

.l 4 8 1,' ~ ' .y ,-f, , fe s.4 '. g: .f =.g.. O,. m A1 tacit!RNT 4 a of a VikCIL C. SUNHFM Col.D S!!LTIDOVN SUPIM*T SYSTi. tis LOCATION FUNCTION E_QUll' HEN rj SEP. hF CONTHOL F)ficIncu unAns 5. InJication a. Re n tor Building Temperature TI-92030 R CREP Tn See Note I TI-9203A .1 NCB t )r TI-9201A A ttCB g 6. Diesel Generator a. Start /Stop Diesel Cencrator XEC-IA-DG A D.C. Control Panel (XCX5201) & ttCII t/r XEC-IB-DG B D.C. Control Panel (XCX5202) & tlCh tg b. Start /Stop Fuel Oil XPP-4A-DG A D.C. Cont rol Panel (XHCIDA22) & ilCC -f)(- TAansfer Pumps XPP-4B-DC B D.C. Control Panel (yNCIDB22) & HCC Tg p 7. D-C Power Systems tf See FSAR Section 8.3 c-8. Portable Cosvaunications Systems g f 'N M s Notes: 5"r 1. New instrument loop added to provide indepen.lence f rom Control Building and, therefore, is not zuidect to loss fruam a Cont rol Huilding fir. 2. InJicator not required to achieve told shutdown laut is included as a possible aid to operations anJ could be subject to lumn from a postulate fire. C3 W C3 n 2 "J C 2 C ") D NJ 2:= m M N CD O . -* W.,....;f. 't, '.7 y p

ATTACHMENT 4 4 3. IFV-2C?' .; - Alternate power is not required _since the valve-fails open on loss of power and/or air. The desired fuaction is to open the valve and start the turbine driven emergency feed-water pump. Once the pump is started, emergency feedwater flow can be controlled by modulating flow control valves ITV-3563-EF, IFV-3546, and IFV-3556-EF. 1 I f l f

=_. ,... e-i... Attachmtnt5 t l l 5 l l APPENDIX B ANALYSIS OF SPURIOUS OPERATION for SAFE SHUTDOWN ANALYSIS for i FIRES IN CONTROL R00ti, RELAY ROOM I or 1 CABLE SPREADING ROOMS i e l l 6 4 " _ em v y es-- e eeg + e-w e eworm-av-&ww--e-----e4e A.,

Atttchment 5 INTRODUCTION To assess the significance of possible spurious operations, it is necessary to first determine what systems would be adversely affected by spurious operations. A review of the critical plant systems, in the operating modes applicable to achieving safe shutdown, revea:s that loss of reactor coolant fram the reactor coolant system is the most significant action that would adversely affect safe shutdown. ANALYSIS A detailed review of the reactor coolant system indicates five possible paths for loss of coolcut: 1. The normal letdown path. 2. The RHR suction and return lines. 3. The reactor vessel head vent path. 4. The sample lines. 5. The power operated relief valves (PORV). The normal letdown path has a variety of fail closed valves in series; and the simultaneous spurious operation of these valves is very unlikely. Therefore, this path does not. warrant further review. The RHR suction line has two normally closed motor operated valves in series; and the return line includes a check valve. The spurious operation of motor operated valves is unlikely because of the complexity of the control circuits; and the spurious operation of two motor operated valves, of different channels is considered very unlikely. In addition, power to at least one of the two valve motor operators for each letdown line will be locked out te further ensure against spurious operation. Therefore, this path does not warrant further review. The reactor vessel head vent path cor.sists of two parallel lines with two motor operated valves in series on each line. One valve on each line will be normally open. Although spurious operations of motor operated valves is unlikely, no special provisions exist to prevent spurious operation for this path. The sample lines include two solenoid vlaves in series plus manual valves at the sample room. Since the manual valves are normally closed, this path doec not warrant further review.

The power operated relief valves consist of three solenoid operated valves on individual lines. Spurious operation of these valves is possible since shorts, one or multiple, in the MCB control switch and associated cabling may cause the valve to.open; even multiple ground faults may not blow the control power fuses since valve controls are on the positive side of the DC supply. Therefore, the plant design has been reviewed to determine if a single fire can cause spurious operation of these valves and also disable both channels of charging pumps, and associated safc y systems including the diesel generatort. Since the control for the thr(e PORV's and for the three charging pumps are all located on the main control board one major fire could, in theory, temporarily disable the charging pumps and cause spurious operation of the valves. However, transfer switches and control switches are provided for two of the three PORV's on the control room evacuation panels (CREP). Therefore, an operator at this location can immediately take control of these valves and de-energize the solenoids permitting the valves to go closed. Although the third valve is not controllable from the CREP, the DC power for the solenoid pilot valve can be de-energized by tripping the panel supply breaker in the intermediate building on the floor below the CREP. This power supply breaker to the main control board is easily accessable by a stairway adjacent to the CREP. 4 As discussed in the general analysis of shutdown from outside the control room, a charging pump can be easily energized by direct manual operation of the circuit breaker in the switchgear room adjacent to the CREP. CONCLUSION Although spurious operation of the PORV's is possible, that spurious operation can be easily be prevented (terminated) by operator action at available controls and circuit breakers in the intermediate building. Similarly, charging pump operation can.be restored, if required, by operator action at switchgear in l the intermediate building. This can be generalized to say that spurious operation of equipment that would be detrimental to the safe shutdown of the plant can be prevented (or terminated) from outside the control room. Therefore, the plant design is acceptable without modification.

ATTACHMENT 6 During the April 9 and 10, 1981 meetings with the NRC a random selection was made of kn instrument with indication on the CREP. The insttrument selected was ITE-410A-RC. The cabling for this instrument was then traced on conduit and cable tray drawings to assure that the cabling does not enter the control building. The remainder of the instruments listed on attachment 1 of the Fire Protection Evaluation, Question 1 follow the same type routing except those listed below. That is, the cabling for the CREP instrumentation does not enter the control building although it may be in the same conduit and cable trays as its redundant instrument of the same train. As taken excpetion to above, the following instrumentation cabling is routed through the control building: EQUIPMENT # LOCATION OF CONTROL LI-477A Local EF Pump Station LI-487A Local EF Pump Station LI-497A Later N1-36A CREP & MCB l NI-32A CREP & MCB LI-ll2 CREP LI-470A CREP FI-150A CREP FI-122B CREP PI-121A CREP FI-110A CREP The above listed instruments are provided as operational aids and are not re-quired for safe shutdown of the plant. .}}