ML20268A585
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<U.'.l <! a::ou 50 51 52 53 54 55 56 TEMPORARY STRAINER------------------- TW-67 / TE-67( 238 _6135) NOTE 5 R. T.D. TT-82 TS-2 THERMOCOUPLE TO THERMOCOUPLE ~ ALARM SWITCH ~ IN GENERATOR AUXILIARY PANEL. ALARM CLOSES (238-B I 35) R. T. D. TE-66 WHEN TEMPERATURE INCREASES TO 24 122' F AND GIVES ALARM, "INLET WAT ER TEMPERATURE - HIGH". t~=7 1 (231D-CI 35) I I DIFFERENTIAL PRESSURE SWITCH ~ RO CLOSES WHEN THE GAS PRESSURE DECR~ ( 41G TO 5 PSI ABOVE INLET STATOR WATER--""" ~ PRESSURE AND GIVES ALARM "GENERATOR HYDROGEN PRESSURE - LOW" RANGE OTO 300 PSI. (167Z-Dl34)PS 300 INLET WATER PRESSURE GAUGE RANGE O TO ----------- 100 PSI PI 340 ( 467C-A I 32) FE PURCHASER'S CONNECTION FOR PRESSURE 650 I NL ET WA T ER --------------- PX 328 PURCHASER'S CONNECTION FOR GENERATOR------------- GAS PRESSURE PX 329 R'[f[~ TO @) ST!,TOR' D C - !:oh 3 2 9 2 - I 3 PIPI\\JG
- 1 TEST GAUGE RANGE OTO 160 PSIG \\
PI 21 484 PS-12 IJIFFEl<E~IAL PRESSURE EXCITER END 532 530 ~ 531 .SWITCH ~1l Cl<lSE5 WHUJ
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DIFFE"RloiJ11AL PRE:55,;~ l,n, ACRQSS FILT!cR ir,ICRF..4'>F.<;\\ 481 6Y El l".51 AU'VE TifE tJORMAL PRe:.e.5URE D l<-0 P Al,J D G!Yl:S ALA'-"1
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Pl'Ol'- fl!GH "( I 65Z-D I 34) PI -20 TEST GAUGE RANGE O TO 160 PSIG I ANI-2 INLET WATER CONDUCTIVITY \\ CELL RANGE OTO 2 MICRO-SIEMENS/CM RECOMMENDED OPERATING RANGE 0.5 TO 1.5 MICROSIEMENS/CM ,ANS-2A ALARM ~ CONTACTS IN INDICATOR CLOSES WHEN CONDUCTIVITY INCREASES TO 1.5 MICROSIEMENS/CM AND GIVES ALARM "STA TOR COOLING WATER INLET CONDUCTIVITY HI-TRIP" ANS-2C INTERLOCK CONTACT CLOSES AT CONDUCTIVITY GREATER THAN 1.5 MICROSIEMENS/CM USED FOR GENERATOR TRIP SCHEME, AS PER CONDENSED OPERATING INSTRUCTION NO. 5 FILTERS 483 482 !ccz~ cc CEL-2 (111-D131) FI - I DEMINERAL IZER WATER FLOW GAUGE RANGE 0 TO I 00 GPM S-8PRESSURE SWITCH ~ CLOSES AT 5 PSIG AND GIVES ALARM "MAKE-UP WATER FLOW - ON" MAKE-UP (161Z-DI 34) WATER CONTROL VALVE SV-1 P 1-13 a . SI B4 THERMOCOUPLES SE.t NOif.. I. @- .. :,,..,.... ~ el-/ TURBINE GENERATOR
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.;s FOR PARALLEL RING AND BUSHING DISCHARGE PIPING, SEE DWG. 108022-5B I 7 SEE NAMEPLATE FOR NORMAL OPERATING DIFFERENTIAL VACUUM CONNECTION-- REMOVABLE LINK "J" IN A FEED-THRU POSITION FOR STATOR COIL DRAINING OPERATION ONLY I ( PRESSURE'-..._. I ~ c, BL I ND FLANGE
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--.---*------* ----------i---1 PI - I I TEST GAUGE - RANGE O TO 160 PSIG ~ PS-7 DIFFERENTIAL PRESSURE SWITCH III], CONTACTS CLOSE WHEN THE DIFFERENTIAL 488 PRESSURE INCREASES TO 30 PSID AND p >O... +--..-"( GIVES ALARM "STATOR COIL WATER PRESSURE DROP - HI CH" ( I 78A-B I 34) FS-2 DIFFERENTIAL PRESSURE SWITCH ~ WHEN DIFFERENTIAL PRESSURE DECREASES TO 20 PSID A CONTACT CLOSES AND GIVES ALARM "STATOR COIL WATER FLOW VERY LOW". WHEN DIFFERENTIAL PRESSURE DECREASES TO 18 PSID A SECOND CONTACT CLOSES AND A GENERATOR RUNBACK IS INITIATED. SEE NOTE 6 ( 466B-B I 32) FS-1 DIFFERENTIAL PRESSURE SWITCH ~, WHEN DIFFERENTIAL PRESSURE DECREASES TO 22 PSID A CONTACT CLOSES AND GIVES ALARM "STATOR COIL WATER FLOW - LOW". WHEN DIFFERENTIAL PRESSURE DECREASES TO 18 PSID, A SECOND CONTACT CLOSES AND A GENERATOR RUNBACK IS INITIATED. SEE NOTE 6 ( 466B-C I 32) TI - I 4 THERMOMETER RANGE I TO I I 0° C OPERATING RANGE 35 TO 50' C 489 499 PI - IO TEST GAUGE RANGE 0 TO 160 PSIG 498 455 450 497 496 Pl -12 STATOR COIL WATER DIFFERENTIAL PRESSURE GAUGE - RANGE OTO 50 PSI ORO TO 60 PSI rLS-6 LEVEL ALARM SWITCH ~ GIVES ALARM "WATER TANK LEVEL - HIGH' LEVEL SWITCH SV-W ENERGIZES AND" DE-ENERGIZES SOLENOID VALVE SV-1 ""-, TO MAINTAIN PROPER WATER LEVEL = J LS-4 ~ 1 LS-5 IN TANK LEVEL ALARM SW! TCH C?:] GIVES ALARM "WATER TANK LEVEL - LOW"~ 485 ~( 00 N E --~THERMOCOUPLE TO THERMOCOUPLE ALARM SWITCH ~ IN GENERATOR AUXILIARY PANEL. ALARM CLOSES WHEN TEMPERATURE INCREASES TO 185'F AND GIVES ALARM "OUTLET WATER TEMPERATURE - HIGH" TW-82 (237B-A I 35) NOTE 5 TURBINE END
- K 210 I SEPARATE VENT TO ATMOSPHERE VENT COVER (TO ATMOSPHERE)
K 2104 K 2103 t!J CAPPED 461 454 444 j 512 447 G-0627 HYDROGEN SUPPLY FROM HYDROGEN PRESSURE REGULA TOR "2" - SEE GAS DIAGRAM 6t*C WATER TANK GAS PRESSURE RELIEF ~ VALVE - SET AT 5 PSIG RV-94 445 \\ PRESSURE SWITCH ~ CONTACTS CLOSE WHEN HYDROGEN PRESSURE IN WATER TANK REACHES 6 PSIG AND GIVES ALARM "WATER TANK PRESSURE - HIGH" PS-9 ~ (163Z-Dl34) 459 539 460 1 ~ ~42 458 TEST GAUGE RANGE 0 TO 15 PSIG Pl-14 .......___VENT VALVE FOR PURGING ANS-IA A.LAR:M ~CONTACTS IN RE.CORDE.RCLOSE.-WHE:.N CONDUCTIVITY-INCRE.ASe.'a, ro 5.0 lo'\\ICR0Slf..lv1E:.N'3/C.M AND C.1Vf:.S ALAR,M "STATOR COIL WATf.R CONDUCTIVITY ltlC:iH" ANS-1.8 ALARM )331 CONTACTS IN RE.C.ORDE.R ClD':>E. WHE..N' CONDUCTIVITY \\ C.ONTIUUOUS VENTS 414 452 522 ,-JL.J.,11.J..-__Jll_ __ ~---!=L.J1L4_48~=>-;51:,4 l!AI£B. I I AUTOMATIC PRESSURE REGULA TOR "W" FOR PRESSURIZATION OF WATER TANK SET AT 2PSIG PCV-148 519 520 417 INC.RE.ASE..S TO 9.!5 r.11C.ROSIE.MEKS/C:M AND 6!VE5 ALARM 11STATOR COIL WATER INLE.T C0NPUCTIVITY-VERY Hl4H* SE:E. NOTE: 3 OUTLf:.T WA,E.R CONDUCTIVITY CE.LL AAN<:ie: 0-2..0 MIC.ROSIE"1f.NS /ct,1 RECOMMc.NOE.O OPE.RAT I N4 RAN~E 0,5 TO 1.5 M ICR051EMEN.5 /C::M, SEE l'iOTE..3 ANl.-101 'FLOW I N0lc:ATOR F 1-2.h 405 (57-E I 02) 505 477 FLOW INDICATOR Fl-23 HEAT EXCHANGER - I 524 409 ~EJ@ CNDS. SYS. 525 COOLING WATER - FLOW INDICATOR FI -2<11 l CNDS. SYS. 408 COOLING WATER HEAT EXCHANGER - 2 527 WATER FLOW ORIFICE R0-98 419 418 I 526 509 510
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(LI.f:DJi/) CEL-1 THERMOMETER RANGE OTO I IO'C OPERATING RANGE 40 TO BO'C TI -13 544 474 Pl-16 473 PH~-t " - Pl--17-: 471 p ~4--1 469 1-+-1.>:::1----1 p 476 Pl-18 L'.J 470 TANK """1---------:~.L--,,-_~ --=----_J-1_-_- ____ -1... __ HIGH LEVEL NORMAL LEVEL LOW LEVEL "'SIGHT LEVEL GAUGE WINDOW Ll-3 H~r1--l~-8"x6' ___ WATER TANK PRESSURE GAUGE & VACUUM REDUCER RANGE O TO 150 PSIG - 30" HG Pl -15 570 D ~._~ 571 ~4--'~D I _______ J 468 I I I_ - _I SCCW PUMPS LOCATED OFF OF SCCW SKID 12 PLCSl WATER TANK DRAIN TO TURBINE BLDG SUMP DIFFERENTIAL PRESSURE SWITCH [ID CLOSES WHEN DIFFERENTIAL PRESSURE ACCROSS PUMP DECREASES TO 20 PSI ACTUATES PUMP "2" AND GIVES ALARM "PUMP I STOPPED" PS-I 0 LOCK THIS VALVE IN THROTTLED POSITION
DIFFERENTIAL PRESSURE SWITCH ~
CLOSES WHEN DIFFERENTIAL PRESSURE ACROSS PUMP DECREASES TO 20 PSI ACTUATES PUMP " I " AND GIVES ALARM "PUMP 2 STOPPED" PS-I I STRAINER STR-15 )( 420 466 421 422 ,,JMIXED DEMINERALIZER JCARTR I DGES 423 cc !ci] CEL-~DEMINERALIZER FLOW CONDUCTIVITY CELL 521 RETURN TO HOUSE K-5733-1/2 SYSTEM MISC. CONDENSATE "A-:B Hz DRYER 433 432 431 435 PRESSURE RELIEF VALVE SET AT 90 PSIG ABANDONED IN PLACE
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L~R. RE T. 3NPGIC 5 Size 424 \\( STATOR COIL COOLING WATER 02-03-2020 AJFJ FXC2 NIA NOT REQUIRED PER CF3. ID5 ~-~~ RANGE OTO 2 MICROSIEMENS/CM. NORMAL (117-Cl3I) OPERATING RANGE 0.1 TO 0.4 MICROSIEMENS/CM. ANR-3 ADJUST FLOW PER CONDENSED OPERATING 1 ANS-3 INSTRUCTIONS. ALARM ~ CONTACTS IN RECORDER CLOSE WHEN CONDUCTIVITY DIAGRAM INCREASES TO 1.5 MICROSIEMENS/CM AND GIVES ALARM "DEMI NERAL I ZER OUTLET CONDUCT I VI TY-H I GH". SEE NOTE 3. Revised Pe, DFT-7*5089 I f---------+----+----+----+----------------+--------+------+---------i DATE OWN RE IV PROFESSIONAL ENGINEER PE DISC. PE EXP. 57 58 59 LEGEND [><] VALVE NORMALLY OPEN FLOW LINE VALVE NORMALLY CLOSED SENSING LINE [:>,Ill VALVE NORMALLY THROTTLED DRAIN LINE v1 CHECK VALVE 0 PRESSURE GAUGE ~ QUICK OPENING VALVE PRESSURE SWITCH ~ SOLENOID VALVE ~ CONDUCTIVITY CELL ---N---- STOP CHECK VALVE lc=I THERMOMETER l ( OPEN DRAIN t== ELECTRICAL CONNECTION + ORIFICE Q STRAINER ...t-,,. RELIEF VALVE [:- PLUG WATER ALARMS [ill PUMP 2 STOPP ED ~ WATER TANK PRESSURE - HIGH [ill PUMP I STOPP ED ~ STATOR COIL WATER FLOW - LOW [lll WATER FILTER PRESSURE DROP - HIGH ~ STATOR COIL WATER FLOW - VERY LOW [?] MAKE-UP WATER FLOW - ON [TI] STATOR COIL WATER PRESSURE DROP - HIGH ~ INLET WATER TEMPERATURE ~ OUTLET WATER TEMPERATURE ~ WATER TANK LEVEL HIGH - HIGH - HIGH rm [TI] ~ STATOR COIL WATER INLET CONDUCTIVITY - HIGH STATOR COIL WATER INLET CONDUCTIVITY - VERY HIGH DEMINERALIZER OUTLET CONDUCTIVITY - HIGH rm WATER TANK LEVEL LOW ~ GENERATOR HYDROGEN PRESSURE - LOW CONDENSED OPERATING INSTRUCTIONS SEE INSTRUCTION BOOK FOR COMPLETE OPERATING AND FLUSHING INSTRUCTIONS I. THE WATER SYSTEM IS PRESSURIZE WITH HYDROGEN ABOVE THE WATER LEVEL IN THE WATER TANK. AN AUTOMATIC HYDROGEN PRESSURE REGULATOR MAINTAINS THE HYDROGEN PRESSURE AT 2 PSIG. A RELIEF VALVE WILL PREVENT HYDROGEN PRESSURE BUILD UP IN EXCESS OF 5 PSIG IN THE WATER TANK,
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THE SYSTEM MAY BE OPERATED WITHOUT HYDROGEN PRESSURIZATION. THIS MODE OF OPERATION IS NOT RECOMMENDED SINCE CORROSION ACTIVITY Will BE ACCELERATED IN THE PRESENCE OF ATMOSPHERIC OXYGEN. 3, THE GENERATOR CAN BE OPERATED AT ALL HYDROGEN PRESSURES BETWEEN MAXIMUM GAS PRESSURE AND 45 PSIG. THE MACHINE GAS PRESSURE MUST BE MAINTAINED HIGHER THAN STATOR COIL \\NlET WATER PRESSURE,
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STATOR COIL COOLING WATER SHOULD BE CIRCULATED WHENEVER THE GENERATOR IS CARRYING LOAD OR WHEN THE STATOR IS ENERGIZED. EITHER PUMP IS CAPABLE TO PRODUCE NORMAL WATER FLOW.
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WITHOUT STATOR COIL WATER CIRCULATION AND WITH THE COILS FILLED WITH WATER, THE GENERATOR CAN SAFELY CARRY UP TO 151/4 OF RATED STATOR AMPERES FOR A MAXIMUM TIME OF ONE HOUR IF THE INITIAL CONDUCTIVITY OF INLET WATER DOES NOT EXCEED 1.5 MICROMHOS/CM. IF THE INITIAL CONDUCTIVITY EXCEEDS 1.5 MICROHMOS/CM, THE GENERATOR LOAD SHOULD BE REDUCED TO ZERO AND ITS EXCITATION REMOVED WITHIN THREE MINUTES. 6, IF THE WATER FlOW STOPS, THE SECOND CONTACTS ON SW29 AND/OR SW30 WILL INITIATE THE AUTOMATIC RUNBACK THROUGH A FIVE SECOND DELAY RELAY. <THE FIVE SECOND DELAY IS TO PERMIT ALTERNATE CIRCULATING PUMP TO COME UP TO SPEED. I THE GENERATOR RUNBACK CAN BE ACCOMPLISHED AT A MAXIMUM RATE OF 2001/4 PER MINUTE. IF THE GENERATOR RUNBACK FAILS TO START IN 45 SECONDS, THE GENERATOR WILL BE TRIPPED. THE GENERATOR RUNBACK WILL BE PULSED WITH AN ON-OFF CYCLIC RELAY TO ASSURE GRADUAL LOAD REDUCTION.
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MANUAL RUNBACK MAY BE USED TO AVOID TRIP PROVIDED STATOR AMPERES CAN BE REDUCED 403/4 PER MINUTE DOWN TO THE STATION AUXILIARY LOAD IN 2'/, MINUTES. 8, THE GENERATOR CAN CARRY 75% OF RATED STATOR AMPERES WITH ONE COOLER OUT OF SERVICE,
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ONE MIXED BED DEMINERALIZER IS NORMALLY IN SERVICE AT A TIME; THE OTHER BEING HELD AS A SPARE. MAXIMUM FLOW THROUGH THE DEMINERALIZER IS 50 GPM. TEMPERATURE OF WATER SHOULD NOT EXCEED 60°C MAXIMUM. SET DEMINERALIZER FLOW RATE AS REQUIRED TO MAINTAIN LOOP CONDUCTIVITY AS SPECIFIED AT *CC2". THIS FLOW MAY BE CHANGED BY ALTERNATING THE POSITION OF VAlVE 419. REPLACE DEMINERALIZER BED WHENEVER THE INDICATION ON CONDUCTIVITY METER *cc1* INCREASES TO 1.5 MICROHMOS/CM AT 25°C WITH CONSTANT FLOW RATE.
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ONE FILTER IS NORMALLY IN SERVICE; THE OTHER HELD AS A SPARE. WHENEVER PRESSURE DROP ACROSS THE FILTER INCREASES 3 PSI ABOVE THE NORMAL PRESSURE DROP, REPLACE THE FILTER. I 1. GENERATOR MUST BE PRESSURIZED WITH GAS BEFORE WATER FILLING OR CIRCULATION IS STARTED.
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CARE SHOULD BE TAKEN TO PREVENT CO, FROM COMING INTO CONTACT WITH WATER SINCE ITS PRESENCE WILL DRASTICALLY INCREASE THE STATOR COil WATER CONDUCTIVITY.
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OPERATION OF THE GENERATOR WITHOUT STATOR COIL WATER CIRCULATION IS PERMISSIBLE AS OUTLINED IN THE ABOVE INSTRUCTIONS PROVIDING NO OTHER OPERATING CONDITION ON THE TURBINE OR GENERATOR REQUIRES THAT THE UNIT BE TRIPPED. REFER TO THE TURBINE INSTRUCTION BOOK FOR TURBINE LIMITS ON AUXILIARY LOAD OPERATION. I. 2,
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FILLING INSTRUCTIONS OPEN VALVE 512. CLOSE,448, 424, AND 400, AND BOLT ON BLIND FLANGE. CLOSE 498 AND 499, AND DISCONNECT REMOVABLE LINK "H". WHICH IS LOCATED ON THE GAS DIAGRAM. ~ CLOSE VALVE 7B ON GAS DIAGRAM. OPEN 420, 421, 422, 423, 509, AND 510 TO FILL DEMINERALIZERS. OPEN 424, CLOSE 420, 421, 422, AND 423. OPEN VALVES 402 1 404, 406~ AND 408. ADMIT WATER FROM BOILER FEED SYSTEM OF HOUSE DEMINERALIZER WATER SYSTEM BY OPENING VALVE 401. FILL SYSTEM UNTIL A FUll STREAM OF WATER FLOWS FROM VALVE 512.
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START EITHER PUMP *1 OR PUMP *2 AND CONTINUE TO VENT SYSTEM. WATER PRESSURE AT PUMP DISCHARGES SHOULD NOT EXCEED GENERATOR GAS PRESSURE. CLOSE VALVE 431.
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OPEN MOMENTARILY AND CLOSE VALVE 470, 474, 481, 485, AND 486. THROTTLE VENT VALVE 477, 505, 501, 500, 510, AND 509.
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OPEN VALVE 431 UNTIL A FULL STREAM OF WATER FLOWS OUT OF VALVE 512. CLOSE VALVE 431 AND 512. FOR PRESSURIZATION OF WATER SYSTEM WITH HYDROGEN I. INSTALL REMOVABLE LINK *H" AS SHOWN ON GAS DIAGRAM.
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CLOSE VALVES 444, 448, 459 1 AND 460. 3, OPEN VALVES 78, ON GAS DIAGRAM, TO PROVIDE H1 TO WATER SYSTEM, 4, ADJUST PRESSURE REGULATOR "Z", ON GAS DIAGRAM, TO DELIVER HYDROGEN AT RANGE OF 3 TO 5 PSIG.
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OPEN VALVES 4'7, 4*8, 458, AND 460 AND ADMIT HYDROGEN.
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DRAIN OFF EXCESS WATER UNTIL WATER LEVEL IS AT HIGH lEVEL IN SIGHT GLASS OPENING VALVE 51 I.
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START PUMP *1 OR *2 AND ADJUST WATER lEVEl IN WATER TANK TO NORMAL lEVEL.
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OPEN VALVE 444.
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CIRCULATE WATER THROUGH DEMINERAL\\ZER UNTIL PROPER CONDUCTANCE IS OBTAINED ON INLET CONDUCTIVITY CELL *cc2*.
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CLOSE VALVES 402, 404, 406 1 408, 422, AND 423. THROTTLE VALVE 419 TO MAINTAIN DESIRED CONDUCTIVITY, I Aa-..PTED i-'ROM I DC-6632,:?2_-J I.
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NOTES 84 THERMOCOUPLES LOCATED RADIALLY IN STATOR COil WATER DISCHARGE HEADER. NUMBERED Tl-1083 TO Tl-1130 AND T\\-230 TO Tl-265.(232A-BI 35)~ PG&E PIPING THIS SHEET - PG&E CLASS [fil THEY ARE CONSECUTIVELY
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ALL CONDUCTIVITY CELLS ARE TEMPERATURE CONDENSATED TO 25'C. ALL CONDUCTIVITY CELLS ARE CONNECTED TO INDICATORS WITH DUAl RANGES OF OTO 2 ANDO TO 20 MICROSIEMENS/CM.
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FOR OUTLINE SEE DC-663292-10.
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THERMOWELLS TW-6T AND TW-82 ARE SEAL WELDED TO THE PIPING.< 54/55 -E) DIABLO CANYON POWER PLANT PG&E CO, TURBINE AND GENERATOR ASSOCIATED SYSTEMS DRAWING SHEET PAGE REV UN IT 2 08022 5 0 45 E D C B A}}