ML16207A687

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8 to Updated Final Safety Analysis Report, Section 7.2, Figure 7.2-1 to Figure 7.2-19
ML16207A687
Person / Time
Site: South Texas  
Issue date: 04/28/2016
From:
South Texas
To:
Office of Nuclear Reactor Regulation
Shared Package
ML16207A547 List: ... further results
References
NOC-AE-16003371
Download: ML16207A687 (22)
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17 AMSAC LOW STEAM GENERATOR LEVEL (SHEET 7Al sJ~A~1 GJ~E~Nt?f0~ 1r~lPLfPv-l~> TURBINE POWER STEAM GENERATOR HI-HI LEVEL OR S I OR REACTOR TRIP (P-16} (TRAIN Al (SHEET 14} (NOTE 6} I (NOTE 10} (TRAIN Bl (SHEET 14} (NOTE 6} (TURBINE IMPULSE ~--------------~--------, ~------------~:~~~~:_::~~~-~~~~--l ~~1-~r~i-"is GENERATOR PROTECT ION SIGNALS (BY TO GENERATOR TRIP ~ /,;! II I I I

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(NOTE 5) .----- E-HDC POWER FAILURE----, MANUAL TRIP .------ GENERATOR TRIP----, I PB PB I I B I NOT MR~~~L I I I 5050""" 526~ I 5x0 L I' REDUNDANT I i i .------LOW BEARING OIL---- I i BY IBY OTHERS I@ iNES OVERSPEED THRUST BEARING LOW VACUUM C-8 I i I i i I I I I i I I i I i I i I I A I P-13 i C-5 i i i i I I I P-13 I C-5 TO DEFEAT I (~~Etr 7 4l i 1 AJf8~rTIC DrlPMA%~JN~ I ,ROD WITHDRAWAL (NOTE 4} 'i '-R"Ei)uN'D"AN--rT ____________________ J NoT LRi60~fN"~7---------1E2~LQII:IE;F.?JJ I TO REACTOR TRIP TO STEAM i' I (SHEET 2} DUMP CONTROL I ~ I (SHEET 11} I L.-------------------------------------7------------------..J REDUNDANT

1. THESE SIGNALS INDICATE THE FULL CLOSED POSIT I ON OF THE STOP VALVES.

POSIT I ON DETECT I ON IS ACCOMPLI SHED BY 11} TWO CONTACTS PER STOP VALVE, ONE FOR EACH TRAIN. THE LOGIC SHOWN IS FOR FOUR STOP VALVES.

2. EXCEPT WHt:RE INDICATED OTHERWISE, REDUNDANCY IS I ND I CAT ED IN REGARDS TO WESTINGHOUSE NES REQUIREMENTS ONLY.
3. OPEN/SHUT I ND I CAT I ON IN CONTROL ROOM FOR EACH STOP VALVE.
4. THE REMOTE DISPATCHING IS TYPICAL..ACTUAL IMPLEMENTATION MAY NOT INCLUDE REMOTE DISPATCHING.
5. THE TURBINE PROTECTION LOGIC IS TYPICAL FOR A WESTINGHOUSE STEAM TURBINE DIVIS I ON SUPPLIED TURBINE.
6. THE TWO INPUT SIGNALS IN ONE TRAIN PERFORM THE SAME FUNCTION FROM I DENT I CAL SIGNAL SOURCES.

TWO INPUT SIGNALS ARE PROVIDED FROM SEPARATE PROTECT I ON SYSTEM OUTPUT RELAYS TO FACILITATE TESTING OF THE PROTECT I ON SIGNALS THROUGH THE INDIVIDUAL SOLENOID VALVES WITHOUT A TURBINE TRIP.

7. SEPARATION AND I SOL AT I ON MUST BE PROVIDED TO SEPARATE THE SIGNALS IN A PROTECT I ON TRAIN FROM ALL OTHER SIGNALS INCLUDING THE OTHER TRAIN AND NON-TRAIN AS REQUIRED BY THE REACTOR PROTECTION CR ITER! A IEEE STANDARD 279 AND 384, THE WESTINGHOUSE STEAM TURBINE DIVISION OFFERS A CUSTOMER OPTIONAL EXTRA, WHICH INCLUDES I SOL AT I ON DEVICES AND ENCLOSURES, TO FACILITATE THIS SEPARATION.
8. THE 200 PER CENT PER MINUTE RATE IS CHARACTI':RISTIC OF A WESTINGHOUSE S. T.D. RUNBACK SYSTEM WITH A CONT lNUOUS CONTACT CLOSURE. IN ACTUAL OPERATION THE SMALL DUTY CYCLE OF THE CONTACT CLOSURE FROM THE CYCLIC TIMER WILL GIVE A RUNBACK RATE MUCH LESS THAN 200 PER CENT PER MINUTE.
9. THIS FUNCTION IS USED TO BYPASS THE REDUCED TEMPERATURE RETURN TO POWER CONTROL SYSTEM CIRCUITRY TO ALLOW TURBINE TESTING AND/OR TO DEFEAT THE C-17 ANNUNCIATOR SUCH AS WOULD BE REQU J RED DURING A PLANT SHUTDOWN.
10. THE AMSAC LOW STEAM GENERATOR LEVEL, TURBINE TRIP, SIGNAL IS NOT REDUNDANT.
11. TURBINE IMPULSE CHAMBER PRESSURE SIGNALS ARE DERIVED FROM SENSORS PT505 AND PT506.

SOUTH TEXAS PROJECT UNITS 1 & 2 TURBINE TRIP, RUNBACKS, AND OTHER SIGNALS <SHEET 17 OF 19) FIGURE 7.2-17 REVISION _j

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l,.Ot..... TION 1* "'11G\\U1PoJICII>.I TH& asPS C... &INIET 11-l C>RDii.R TO COIIN&C::'f "T.. I~ ~1cs..:.... 1. TO Tlole: &o".Fii:TV I:IIR... ~E. C:l~CUITf>. FUNCTIONAl DIAGRAM PRESSURIZER PRESSURE RELIEF SYSTEM CTRAJN A> <SHEET 1Bl FIGURE 7.2 -17A REVISION 6 t:~~§Hn I

REI.IIiF INT'ERLOC.~ --T~(.,_ **,) (lol<n'l'7) P~PRE10f>\\lllla. R£LI&.F &15..,..,1.. F~ SIIKTI'l~C.~I) (NOTE 1) WICG.Ai'.NCU:.RC:.~ T'i.MP&R6o.TURa. (NOT£~ '2.(~) m ll ][ ][ I I I I I I WID&.A.. NCiolli. RC'O ~s.'r.~ll. {loiOT1t 4) ]![ I I I I I r--r~,_ j I I ~ I l _!!:!_<>~~--_) TAAII>I... 'IIC~ C0\\.1:) CIWU\\ I'II.I.'MUIII .WTI...nott A.c:mucnow +-----., (OW Mtfl) (b~ NOTa: "M.OCKV~ caooot.) IJC>T FIIU. ONN l Clo!OTE 31 ~MOTe!>) I. "TIIII *-lf>TMLOII'TPIIT I'Mio\\.,In'...._. "r.*loAAI.I!.I..E.C.TftiC.Ooi-1-.,..T\\011 If> .... WilD INTM..,.,....ll... &f>P. C:.to.IWilllT Ill 010.~ 'TO C:OIIMCT TMI........._

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I SOUTH TEXAS PROJECT UNITS 1& 2 FUNCTIONAL DIAGRAM PRESSURIZER PRESSURE RELIEF SYSTEM <TRAIN B> <SHEET 19> FIGURE 7.2-178 REVISION 6 tS~~K:~\\ I _j

L -s~ 0 6~ - INDICATED DIFERENCE BETWEEN TOP AND BOTTOM DETECTOR OF THE POWER RANGE NEUTRON ION CHAMBER A1, A'l-LIMIT OF f 1 (6~) DEADBANO Bt -SLOPE OF RAMP: DETERMINES RATE AT WHICH FUNCTION REACHES ITS MAXIMUM VALUE ONCE DEADBANO IS EXCEEDED Ct -MAGNITUDE OF MAXIMUM VALUE f 1 (6~) MAY ATTAIN SOUTH TEXAS PROJECT UN[T 1& 2 SET~O I NT REDUCT! ON rl!NCT I ON fOR SAf"E -SHUTDOWN S£PARAT I ON Revision 6 L0946.061

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