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ATHOSF'HEPIC FELIEF VALVE PCV-I 9 IIOLJULA I c THE LOOP 2
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ll*IOTC: 61 PCV-19,20,2
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RECU'IDAIIT __,/.
NOTES I' STEAi! DUIIF IS DLOC<ED DY LOCKING Al~ TO T~E =ur~P VALVES AND 1/E~Tl~G THE JIA 0 HRAGNS, THE PEDUNJANT LOGIC O_TFJT OPE 0 ATES,
SOLE\\OID VEIJT VALVES IN SERIES TO REJUN~ANTLY INTERLOC< THE AIR LI\\[ ~ETWEEN EACH VA_\\/E DIAPHRAGM AND ITS ASSOCIATED POSITIOIIER" THE SOLENOID VALVES ARE DE-ENERGIZE] TO VENT, CAUSIIIG THE MAIN DJMP VALVE TO CLJSE Ill FIVE SECONDS, 2,
CIRCUITRY ON THIS SHEET IS NOT REJUNJANT EXCE 0 T WHERE INDICATED RECUNDAIIT,
- 3.
SELECTOR SWITCH WIT~ THE FOLLOWING 3 PCSITIONS:
ON STEAM DUMP IS PERMITTED BYPASS -
T AVG IN-ERLOCK IS BYPASSED FOR LO-LOT AVG" SPRING RETURN TO "01'*1" POSITIOl*I, orr ST[AN UMr :s NOT r[~MITT=D AND ~[S[T T AVG BYrASSo THE REDUNDANT INTERLOCK SELECTOR SWITC~ CONSISTS OF -wo CONTROLS ON T~E C NIR L ~OAHU, le f R lACH IRAINo 4, TH:S MEDIAN SIGNAL SELECT AND --REFERENCE IS DE~IVED FROM SOFTWARE FU\\CTION BLOCKS IN PCS SET lo MEDIAN SIGNAL SELC:CT AND T-REFERENCE FOR ROD CONTRO_ IREFo 91 IS DERIVED FROl1 SOFTWA~E FLJNCT:ON BLOCKS IN PCS SET
!Vo TH:S PROVIDES A FAULT TOLERANT SYSTEM FOR Sl~GLE INPUT FAILURES" 5,
THE RELIEF VALVES START l~ DULA-ING CPEN AT POINT WHERE ALL DUMP VALVES SHOULD BE FULLY OPE~.
6, THE REDUNDANT LOGIC OUTPUT OPERATES 2 SOLENOID VALVES IN SERIES Ifl THE AIR LINE BETWEEN THE MAIN AIR SUPPLY AND EACH PE_IEF VALVE DIAPHRAGM, THE SOLENOID VALVES ARE DE-ENERGIZED-CLCSE, W~IC~ REDUNDANTLY STOPS THE TRIP OPU*I fUl*IC I !Ohio 7,
THE CONDEflSER AVAILABLE SIGNAL LOGIC IS TYPICAL" ACTUAL INPLENENTAT[O, f!A' BE DIFFERENT.
E, THE REDUNDANT T AVG IIITERLOCK CONSIST CF 2 COliTACTS IN SER:ES TO
~[DUl*IDAI\\ITLY STOr* TIIIS T~AIISr[~ SIGl,IALo c
LIGHTS SHOULD BE PRO\\/IJED IN THE CONTPCL ROOM FOR EACH DUi1P VALVE TO INDICATE WHEN THE VALVE IS FULLY CLCSED OR FULLY 0°ENo IC, THE STEAIILil*IE PPC:SSJPE SIGhlAL OPIGI1,1 IIUST BE DIFFE"EIIT FP II THAT \\a/HIC-1 IS JSED FOR STEAMLINE 'IFFERENTIAL PRESSURE SAFC:TY 111.ECTION SIGNAL SHOW[\\
ON SHEET I
TO 11EC:T THE SINGLE FAILURE CRITERION" I I, SHEET I.IUHBERS RE"ER TO THE REFEREIICE IIUl1BERS BELOW" 12, WHE~EVER A PROCESS SIGIIAL IS USED FOR CONTRCL ANO IS DERIVED FR I~ A "ROTECTl N CHAlll*IEL, ISOLATIOll IIUST BE PROVIDED.
13" T~IS DRAWING ILLUSTRATES T-E FUNCTIONAL REOUIRENC:NTS OF T~E REACTOR CONTROL A~D PROTECTION S'!STEl1" TH:S DRAW!llG DOES NOT REPRESENT ACTUAL HARDWARC:
Il1FLEIIENTATI N. FOR HARCWARE IIJFLENENTAT:ON, REF~R TO THE AFFL:CABLE SCHEMATIC DIAGPA~iSlo 14"
~CE BORATED TO COLD SHLTDOWN C ~DITl NS AND IN i1 DE 3, T~E P-12 INTERLOCK CAN BE BvPASSED AT EACH PROTECTION SET" 0
0 I
DATE 06-20-2013 lJ' lJ 0 Fi xG2 REFERENCES WE DWG PG&E DWG I, FUIICT I OIIAL _QG IC DI AGRAl*I I DE/ AIID SYHBOLS ---------------------------------------------------------- 565307 4-1 _________ 49'184 I 2, FUl*ICT I OflAL _OG IC DI AGRAII REACTOR TRIP SI GflA_S ----------------------------------------------------- 565307 4-2 _________ 495842 j, fUIICI JOIIAL _OGIC UJAGRAH ILCLcAH ((,)SIR Af.lU HAIIUAL IRIP SJGI.ALS ____________________________ 'i6oJU/4-J _________ 49'J84..'.
- 4. FUl1CTIOl'1AL _OGIC DIAGRAl1 ILCLEAR Il*ISTR PERIIISSIVES All BLOCKS ______________________________ 55c,3074-4 _________ 495844 5, FUl*ICT!OflAL _OGIC 01,\\GRAl*I P'il'*/1RY COOLMIT svs-c:1,1 TRIP S!Glli\\LS _______________________________ 5653074-5 _________ 49584::
6, rur,CT I Gl~AL _OG IC DI AGnAH r,cssun I Z[n Tn Ir SIGNALS ----------------------------------------------- 565307 4 6 _________ 495846 7,
FUl*IC TI Ol*IAL _OG IC DI AGRA 1*1 ST E.A11 G El*I ERA TOR TR IP SI Gl*IA LS ----------------------------------------- 56 5 3 D 7 4 - 7 _________ 4 9 5 8 4 7 8, FUIKT I Ol*IAL _OG IC DI AG RAH SAFE1~UARDS ACTUAT: Cl*) SI Gl*IALS ----------------------------------------- 5653D7*1 -8 _________ 'I 958°18 9, FUllCTIOl~AL _OGIC DIAGRAII ROD COIITROLS AIID RCD 6LOCk.S ___________________________________________ 5653074-9 _________ 49584S I 0, FUllCT I ONAL _OG IC DI AGRAl*I STE.A1,1 DUMP COIITRCL _________________________________________________________ 565307 4-1 C ________ 49585C 11, FUllCTIGl~AL _OCIC DIACRAII P'iESSURIZER PRESSURE AND LEVEL COl,T~O ___________________________ 5653074-11 ________ 495851
___________________________________________ 5653074-12 ________ 495852 I 3, FUl*ICT I C'i'IAL _OG IC DI AGRAl*I FEEJWATER COIITROL All I SOL AT I OIi
565307 4-1 3 ________ 495853 I 4, FUIKT I Ol*IAL _OG IC DI AGRAl*I FEEJWATER C011TROL
.All I SOL AT I Ol*I
565307 4-1 4 ________ 495854 15, FUl*ICTIOl*IAL _OGIC DIAGRAII A~XILIARY FEEDWATER PUIIPS STARTUP __________________________________ 5653074-1':: ________ 49585::
16, fUl,)[I JOl*IAL _OGIC UJAGRAH [_RclJl,)c IRJl'S, RUll8ACr.S & SIGl*IALS ___________________________________ 'i6'lJU/4-16 ________ 4g'J8'i6
- 17. Flll1cTIOl'1AI OGl1' nlAGRAl1 A ISAc SIGl*IAI S
'ific,ln74-I 7 49'iR'i7 I 8, FUl*IC TI Of I AL _OG IC DI,\\GRAl*I SE I SM! C TR IP ----------------------------------------------------------------- 8759]77 ____________ 4 9 c. 8 52 19, FUllCTIGl~AL _OGIC DIAGRAII DIGITAL FW COIIT S"S ll'IPUT SIGl,IAL 1/ALIDATIOl'I ___________________ 5653074-12 ________ 49585S 20, FUl*ICTIOl*IAL _OGIC DIAGRAl*l DIGITAL FW COIIT S'S "vi FLOW COIITROLLER & Cv DEl*IA1*)0 _________ 5653D74-l'o ________ 49586C 21, FUIKTIOl*IAL _Q,~IC DIAGRAH DIGITAL FW CQl*.)T S*S COIIT VCV SEQ & TR.ACKil*IG LOGIC ___________ 5653D7*1-2C ________ 195861 22, FUl,CTIOl~AL _OGIC DIAGRAII DIGITAL FW COIIT s*s SIGIIAL SELECTOR LOG[C _______________________ 5G53074-21 ________ 495862 23, FUl,)CT I 011 D: AG RAH REACTOR-T ~R3 I IIE -GEIIERATOR FROT"CT I 011 ----------------------------------------------------------------
50082::
2 4, SCH El IAT IC O I ACRAl*I S TEAi'! CU *IP SOL [1'10 IO V ~ L VE S ------------------------------------------------------------------------------ 4 3 7 6 4 d SECTIOII 3
REVISION DESCRIPTION REVISED PER DFT-7*2222 NUCLEAR SAFETY RELATED LJ ll I T I
ELECTPICAL FLJIICTIONAL DIAGRAM STEAi! DJIJP CONTROL 1.:- *.-" -.-\\1.,-.,*-1:: *:-:--
F*I.*
PACIFIC GAS AND ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA DWG SCALE:
BILL OF MAT_:
SUPSDS:
SUPS Bf:
DRA\\l.'!l'JG SHEET PAGE 495850 C
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