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TURBINE U'l SPEED I I l.5X, C:,. 29G GEN. REVERSE f-----+--+-t--, POWER ,..-----.__ 3 4 G LO-LO 26G GEN. ANTI-MOTORING TRIP BRG OIL f-----+---+-f--- PRESS ( EH) ,..-----.__ I G
- GEN, LOSS OF FIELD REHEAT STOP VALVES (6)
-<( z <( a: f-5DDKV _j BKR CLOSED GEN~G BKR CLOSED NEUTRAL \-----V, 30 SEC. 7' / I 25KV MOT. OPER SW - CLOSED f...- START-UP f---~~~~~~~.::;----t-7 o,v. 1---->-I BOTH 500KV~---t-__J ,4G BKRS OPEN 1 GEN. START-UPI--~ o.v. MAIN TRANS. S.P. 5G 6G LOW VACUUM, LOW BEARING r-+------1 ac OIL PRESS, OR t-DC BUS TRIP ~ 0 a_ 0 c-u, f---,'ff--"-----!MA IN STEAM STOP I-- 27G EXCITER
- GEN, DIFF.
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VALVES OVER EXCI-TATION TRIP 7G UNIT OVERALL 1--------+I ,;.ANUAi:" <( 0 0 161 V, CL _.--._9G / 500KV r-,,i' PCB I/ DIFF. BG TURBINE I--------+-+--_.~ TRIP f-----H,1--+-->-1 GOVERNOR ~ BltR FAILUREf--------,¥--1-, SW.532
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/ L/ / 50DKV 500KV LINE \_DIFF. z <( a: f-co z <( a: f-1---o-TURBINE SPEED I I l.5X, ~ LOW VACUUM, ~--+---I >- LOW BEARING I U'l OIL PRESS'- OR <t DC BUS T~IP !DEHl o N CONTROL ROD DRIVE MECHANISM 53 CONTROL RODS 0 0 z w ~ 0 a_ - --->-I "'
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---~ZOG 500KV -X AUX. TRANS NO. I l&i 12 o.c. PCB /. BKR FAILUREf--------,¥--1-, SW. 532 _.----.__ I OG 1 _./ 500KV LI NE CH. A 1-------+I ,..-----:::21 G TRIP 500KV RELA y / -X PCB /' BKR FAILUREf--------,¥-+i-J SW.632 / _,/ _.--._I 4G / GEN
- OVER-zoL TAGE
/ 19G GEN. NEUTRAL f-----1 RUNNING /_.--._30G GEN. REVERSE f--------'"!--_ _J POWER 25KV MOT. 500KV BKR CLOSED o.v. 7 / __,, le__ __ 30 SEC. OPER SW 1--____________________ __J EN CLOSED /STATOR I 75 SEC. f...- ~ CLG WATER f-----------+--------~-,-7 cc HIGH f------,t'->-/f------~ CONDUCT / _.,.,, z 60 MIN.,
- GEN, 5 SEC.
/ o STATOR CLG D' O WATER f-0-V }-------,li-+--+~t--------1--_J 45 SEC. u VERY LOW a: FLOW + \___/ / _./ ~~D~E~H ~ X D' ~ RUNBACK I---°" f----,l'c.J-->-1 <( / GEN OPERATING / 1-- AT 40%/MIN (/') ST AJAolrncLG I _ _J_ _ __'T:::o:::=1 s:::r.;:L:::O:::Ao=--------~}/'~--~ VERY LOW t- ~ FLOW 135 SEC/_,/ N N GEN. LOAD > 15% 5 7. 55HZ I/ 7. 7 SEC _.-------2 3 G /' GEN. D' BACK-UP}----,f-o+---~~~-------+J TRIP 1 _./ / 25G I_./ 0 <( _J a: f-0 u 0 _J a: f-f- z a, u w 0 <( _J f-0 u 0 _J a_ a: f-f- z 8 TRIP UNIT AUXILIARY ~~TRANS. BREAKERS 2-12KV BKRS 5-.11. 16KV BKRS INITIATE AUTO-TRANSFER 12KV BUS D & E
- 4. 16KV BUS D, E,F,G&H TRIP 500KV GENERATOR BREAKERS TRIP GENERATOR FIELD LEGEND 0
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- GEN, UNDER-FREQUENCY
/ L--', 57.95HZI/ 31 SEC GEN. ~ NEGATIVE 1------L, 1f-------~ SEQUENCE
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- 58. 35HZ I/
GENERATOR TRIP 0 0 i! i! 92 SEC 500KV BKR CLOSED 25KV MOT. OPER SW f--~ CLOSED / GEN OUT OF STEP 32G KEY DWG. DATE 04-07-2022 D.D. MNRU R. E. RXG2 I. v. N/A
- p. E.
NIA SECTION 3 REVISION DESCRIPTION 0 i! 9 10 REACTOR, TURBINE & GENERATOR TRIPS NO. FUNCTION DEVICE NO. REMARKS IR HI NEUTRON FLUX RATE POSITIVE 2 OUT OF 4 OF ANY COMBINATION OF POS >----+---------------+---,RATE TRIP NOT FROM THE SAME CHANNEL 3R HI NEUTRON FLUX POWER RANGE HIGH SET POINT - 2 OUT OF 4 4R HI NEUTRON FLUX POWER RANGE LOW SET POINT - 2 OUT OF 4 5R HI NEUTRON FLUX INTERMEDIATE RANGE I OUT OF 2 6R HI NEUTRON FLUX SOURCE RANGE I OUT OF 2 9R STEAM GENERATOR LOW-LOW WTR LEVEL 2 OUT OF 3 PER LOOP I OUT OF 4 LOOPS IOR PRESSURIZER HIGH WATER LEVEL 2 OUT OF 3 WITH P-7 INTERLOCK I IR PRESSURIZER LOW PRESSURE 2 OUT OF 4 WITH P-7 INTERLOCK 12R PRESSURIZER HIGH PRESSURE 2 OUT OF 4 13R OVER TEMPERATURE 6T 2 OUT OF 4 14R OVER POWER 6 T 2 OUT OF 4 1-1~5Rct'-P~R~ES~S~U~R~I Z~E~R~LO~W~L~OW'-=cP~R~ES"'S~U~R~E--+-----t~2_0~U~T_O~F~4~M~AN~U~A~L ~B~LO~C~K~I N~T~LK~W~I T~H~P~-~l~I --l,,,, 16R HIGH CONTAINMENT PRESSURE 2 OUT OF 4 IBR LOW STEAM LINE PRESSURE 20R REACTOR COOLANT PP BUS UNDERVOLTAGE 21R REACTOR COOLANT PP BUS UNDERFREQ 22R REACTOR COOLANT PP BREAKER TRIP 23R REACTOR COOLANT LOW FLOW 24R TURBINE TRIP 2 OUT OF 3 IN ANY STEAM LINE MANUAL BLOCK INTLK WITH P-11 1/2 PER BUS AND 2/2 SUSSES WITH P-7 INTERLOCK 2/3 PER BUS WITH P-7 INTERLOCK 2/4 TRIP WITH P-7 INTERLOCK 2/3 TRIP WITH P-7 INTERLOCK 1/4 TRIP WITH P-8 INTERLOCK 2/3 AUTO STOP OIL PRESSURE OR 4/4 STOP VALVES CLOSED 25R SEISMIC TRIP KOJll,KOJIZ 2 OUT OF 3 PER AXIS KOJIJ 26R CONTAINMENT HI RADIATION REI l,REl2 AIR PARTICLE OR GAS MONITOR IT LOW BEARING OIL PRESSURE 2T THRUST BEARING FAILURE TRIPS IF BEARING OIL DROPS BELOW PRESET VALUE TRIPS IN CASE OF EXCESSIVE WEAR OF THE THRUST BEARING SHOES 3T TURB SPEED 111, 5%, LOW VAC, LOW BRG OIL PRESS OR DEH DC BUS TRIP cSV037 DEH OUTPUT 4T MECHANICAL OVERSPEED TR I PS WHEN UN IT REACHES A SPEED OF I I 0% 6T SIS OR STEAM GEN, HI-HI LEVEL K621 lT TURB SPEED 111, 5%, LOW VAC, LOW BRG cSV I 7 I DEH OUTPUT OIL PRESS OR DEH DC BUS TRIP 9T LOW AUTO STOP OIL PRESSURE PS22 2/3 TURB AUTO STOP OIL TRIPPED PRESS SW IOT TURBINE OVERSPEED cSV04 I DEH OUTPUT I IT TURBINE OVERSPEED 103% cSV042 EH OUTPUT 12T AMSAC SYSTEM KIOIA 3/4 STM GEN LO LVL COINCIDENT W/ TURB POWER )401/4 13T AMS AC SYSTEM KIO I B 3/4 STM GEN LO LVL COINCIDENT W/ TURB POWER )401/4 IG GENERATOR LOSS OF FIELD 40GI 2G LOW AUTO STOP OIL PRESSURE 63AST3, AUTO STOP OIL PRESS.& TURB. STOP VALVES 4 & 5 CLOSED SIGNALS FED INTO SSPS-OUTPUT K635 3G GEN. NEUTRAL START-UP 0. V. 59NSTG I 4G GEN. START-UP OVERVOLTAGE 59STIGI 5G MAIN TRANSF SUDDEN PRESSURE 63MTI 6G GENERATOR DIFFERENTIAL 87GI JG UNIT OVERALL DIFFERENTIAL 87UI f--+---------------+---+--------------------i BG 500KV TIE LINE DIFFERENTIAL SET A 587-IA 500KV BREAKER FAILURE 50/562BFX2 PCB SWITCH N0.532 9G TIMING AUX. RELAY -531 IOG 500KV LINE CH.A TRIPPING RELAYS IIG 500KV BREAKER FAILURE TIMING AUX. RELAY 12G AUX TRANSF *11&12 DIFFERENTIAL 13G UNIT START-UP OVERCURRENT 14G GENERATOR OVERVOLTAGE 15G UNIT OVERALL DIFF, HARMONIC 594L-IA 594L-IB 594L-ID 550/561BFX2 -632 JATll,&11 51STUI 59GI 87UHI 16G AUX TRANSF
- I I & 12 SUDDEN PRESSURE
,3AT 11, & 11 17G AUX TRANSF *11&12 OVERCURRENT IATll,&12 IBG TURBINE THRUST BEARING FAILURE PS28 LOW AUTO STOP OIL PRESSURE PS21 19G GEN. NEUTRAL RUNNING OVERVOLTAGE 59NGI PCB SWITCH N0.632 20G 500KV BREAKER FAILURE 550/562BFXI PCB SWITCH N0. 532 TIMING AUX. RELAY -532 21 G 500KV BREAKER FAILURE TIMING AUX. RELAY 5501562BFXI PCB SWITCH NO. 632 -632 22G GEN. STATOR COOLING TRIP 23G GENERA TOR BACK -UP TR IP 21 GI 21G GENERATOR UNDERFREOUENCY BIGI 25G GENERATOR NEGATIVE SEQUENCE 46G I GEN. STATOR CLG WATER, HIGH CONDUCT., VERY LOW WATER LEVEL & LOW WATER FLOW 26G GEN. ANTI-MOTORING TRIP PS30 STEAM IMPULSE PRESSURE 27G EXCITER OVERCURRENT TRIP 51EI r2_87Gf-O_V_ER_E_X_C_IT_A_T_I_ON_T_R_IP _____ -+O_X_P_2_/_K73_5_S_E_C_._D_E_L_A_Y_O_N_CO_N_T_A_C_T_C_L_O_S_IN_G __ ~!- 29G GENERATOR REVERSE POWER 32G I A
- en f--+---------------+---+-------------------10 30G GENERATOR REVERSE POWER 32G I B
~ ~ ~-+---------------+---+-------------------100 31G MAIN TURBINE AUTO STOP Oil PRESSURE PS329X 0 32G GENERATOR OUT OF STEP 78G I 33G 500KV TIE LINE DIFFERENTIAL SET B 587-IB 31G LO-LO BEARING OIL PRESSURE c62AMGIX EH OUTPUT
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- ;~7~;.:,:;;~~~~c;;::;:::::::;;;::=:,~;;:::~J.::~~~;;;,.:.,-=..-c=="-""='"""=._.,="",,I FOLO PERMISSIVES P-6 I /2 NEUTRON FLUX I INTERMEDIATE RANGE I ABOVE SET PO I NT P-7
- 2/4 NEUTRON FLUX !POWER RANGEi ABOVE SET POINT IP-IOI OR 1/2 FIRST STAGE TURBINE PRESSURE ABOVE SET POINT P-8 - 2/4 NEUTRON FLUX !POWER RANGEi ABOVE SET POINT P-9 - 2/4 NEUTRON FLUX !POWER RANGEi ABOVE SET POINT P 2/4 NEUTRON FLUX !POWER RANGEi ABOVE SET POINT P 2/3 PZR CHANNELS BELOW SET POINT P 2/4 TAVG BELOW SET POINT REFERENCES DWG NO. I. FUNCTION DIAGRAM BY WESTINGHOUSE ______ 495841 THRU ~95858 NUCLEAR SAFETY RELATED UNIT I & C FUNCTION DIAGRAM REACTOR - TURBINE - GENERATOR PROTECTION OIABLO CANYON POWER PLANT PACIFIC GAS AND ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA DWG SCALE: BILL OF MATL: SUPSDS: SUPSD BY: DRAWING SHEET PAGE REV 500825 I O 27 DDN -2
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