ML20138C980

Proposed Tech Spec Changes,Identifying Water Source for Auxiliary Feedwater Pumps,Safety Grade Flow Indication Used for Flow Verification & Bases

ML20138C980
Person / Time
Site:	Davis Besse
Issue date:	08/29/1985
From:	TOLEDO EDISON CO.
To:
Shared Package
ML20138C971	List: ML20138C965 ML20138C973 ML20138C980
References
TAC-55782, NUDOCS 8510230122
Download: ML20138C980 (3)

Text

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} PLMT SYSTim BASES 3/4.7.1.7 AUX 1LI ARY FEEEEATER SYSTEMS The OPERAEILITY of the auxiliary feed.eter systems ensures that the Reactor Coolant System can be cooled down to less than 280*F frw.

nonnal operating conditions in the event of a total loss of offsite power. . .

Each steam driven auxiliary feedwater purp is capable of de[1vering a total feedwater flow of 803 spm at a pressure of 1050 psig to the -

entrance of the steam generators. This capacity is sufficient to ensure that ade:;uate feedi.ater flow is available to remove decay heat and reduce the Reactor Coolant System temperature to less than 2ED'T where the Decay Heat Removal Systa: may be placed into operation.

Folleu, ira en3 medihcotion s ,v irepaivr to k au xiliars (<e cl -

wate,r rp tem pipinS 4 b m % e concj,ns af e sterage <ank %roug h

auxiGarg inct peps le -th e .stf am g e n t rede r.r 64 ceuld affect

! M 535hm'.5 ca pa bilMS te delWer water t. S sttorn generarcr$

fencWns a tended ecfd shut dec>n, a flew path verificatim test shi) be perfermed.

W i Etsi mg be conducted in rnodes A,5 or g using auxiliary steam to drive h av lay n 3 feed f amfs tubine t, demonstrate +ha+ % Clw Panu Mts 6em %e condensate stevoge tank to Oe. shom Sencrator.5 Vin aux iliard feed p w ps.

3 /4.7.1.3 CONDENSATE STORAGE FACILITIES .

The OPERAEILITY of the condensate storage tank with the en64e-mininen meter volume ensures that sufficient meter is available .to maintain the RCS at HOT STANDEY conditions for 13 hours1.50463e-4 days <br />0.00361 hours <br />2.149471e-5 weeks <br />4.9465e-6 months <br /> with steam discharge to atresphere and to cooldown the Reactor Coolant System to less then.280'F in the event of a total loss of offsite power or of the main feedwater system. The contained water volume limit includes an allowance for

, water not usable because of tank discharge line location or other s -

physical characteristics.

, 3 /4.7.1.4 ACTIVIE The limitations on secondary system specific activity ensure that the resultant offsite radiation dose will be limited to a small fraction of 10 CFR Part 100 timits in the event of a steam line rupture. This dose includes the effects of a coincident 1.0 GPM primary to secondary -

tube leak .in the steam generator of the affected steam line. These values are consistent with the assur:ptions used in.the safety analyses.

3/4.7.1.5 MAIN STEM LINE ISOLATION VALVES .

The OPERABILITY of t,he tain steam line isolatiori'va'1ves ensures -

that'no more than one steam generator will blowdown in the event of a steam line rupture. Thu restriction is required to 1). minisize the (DAVI5-BESSE. UNIT 1 8 3/4 7-2 Amendment No. 58 8510230122 050029 PDR ADOCK 05000346

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PDR. __ _ __ __ _ _ _ __

s PLANT SYSTEMS AUXILLARY FEE 0 WATER SYSTEM LIMITING CONDITION FOR OPERATION ,

3.7.1.2 Two independent steam generator auxiliary feedwater pumps and associated flow paths shall be OPERABLE.

APPLICABILITY: MODES 1. 2 and 37 ACTION:

a. With one auxiliary feedwater system inoperable, restore the inoperable system to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> or be in HOT SHUTDOWN within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

SURVEILLANCE REQUIREMENTS 4.7.1.2 Each auxiliary feedwater system shall be demonstrated OPERABLE: .

a. At least once per 31 days on a STAGGERED TEST BASIS by:

1. Verifying that each steam turbine driven pump develops a differential pressure of > 1070 psid on recirculation flow when the secondary steam supply pressure is greater than 800 psia, as measured on PI SP 12B for pump 1-1 and PI SP 12A for pump 1-2.

2.

Verifying)that automatic in the each valve flow path(=th:t nual,h power operated not 10thed.  ::: or led Or Othe m he ::c r ed ' pe:it h .. is in its correct gosition. ' d '* '

'I " "

ANo ciscuAas[LwEs

b. At least onceNi?8r'rIt'sIrfe'kvE per 18 months by: s"cM$ETYNMtUll*we"rE'T. 8N TN'8Nr's*TsE*I N"8 "*YIka P8 8 'T8 '

l. Verifying that each automatic valve in the flow path actuates to its correct position on an auxiliary feed-water actuation test signal prior ta entering rnode 3

2. Verifying that each pump starts automatically upon .

receiot of an auxiliary feedwater actuation test signal frievh enItn"3 made i.

3. VERIF1flNs TH AT THERE IT A FLOW PATM SETwitN EACM AUrf t. lamy FKEDWATER PUMP ANO f acM l iTE AM GENE R AT0 A SY PUMPlN6 W ATER P ROM THE CoseD5MATF 818A44G TAsak TD TNL ST8 AM 6thstAT0g THE FLDW PATH TO THE STE AM 6sNER Atom SWALL st VERIPIEDest EffMER TTE AM sgusagfot '

LEVEL CHANGE OR AUKILI ARY FEEDWATE R KArfry coaAas roow Was4AT8eC WERIFIC.ATION OF THE AuslLIARY F8f DWATE A NWsTEM'A FLoint c APACITY 15 NOT AE9pf Rt0.

tr er b entering made3

• Provision *f schon 3..a 6 not oppmoWe ,

vvis -8F356. umT i 1

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• 'PCA*;T SYSTEMS .

I SUWEILLANCE REQUIREMENTS (Continued)

c. The Auxiliary Feed Pump Turb'ine Steam Generator Level Control ,

Syst8m shall be demonstrated OPERABLE by perforTc.ance of a CMANNEL CHECK at least cnce per 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, a CHANNEL FUNCTIONAL TEST at least once per 31 days, and a CHANNEL CALIBRATION at least once per la months. . .

d. The Auxiliary Feed P6r.p Suction pressure Interlocks , and Auxiliary Feed Purrp Turbine Inlet Steam Pressure Interlocks sr.all be demonstrated OPERABLE by performance of a CHANNEL FUNCTIONAL TEST at least once per 31 days, and a CHAHhEL CALIBRATION at least once per 18 sionths.

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8. AFTER ANY MDDIFIC ATscN OR REPAIR To T*ir AUKILI ARy FEEDWATER SyJTE M TH AT C OUL D AFFECT THE S yJTE M'$ C APA8 8kfTJ Te DELIV ER WATER To THE STEAM GENERATom , TME AFFECTED Flow PATH ENALL SC DEMONETR ATED AVAIL AB LE As FeLLONS

• FReM j

cenDtys h

• I. IF TNE MGDtCIL ATIDN OR R EPAtR ff DowHSTAL AM OF ITkE TEST FLOW #

i l

LINE , THE ApriLI A R y FEED PUMP $H ALL PUMP WATER Tc THE STE AM T GENERATeR ; AND T4E F1,op PATW AVAILABILITY WILL SE VEplFAED SW l

i STEAM GENER ATAR LEVEL C HANGE DA AUXILEARY FEEDWATER SAFETf GRAtf F'LeW INDic AfterJ.

- 2. lF TNE McDiflCATlDN OR EEPAIR 15 UPJTREAM OF TNE TEET FLOW LlHE p Tut AustLIARW FEED PUMP JNALL PUMP WATER TmRoueN THE AUxlLIARY TEEDWATER SyJTEM To THE TE ST TLOW LlHE } A ND THE FLOW P.%TM AVAIL ASILIT.y .WlLL BE VERIFIED By FLOW IWDICATlaM IN TWE TEST Thew 4

uME,(ssE Norf sELow)

, THif sustvfiLLNcf TEff#dr Dw L Bf PERFostMEP 8%#8t 7b fcE**d e

' WATER 515 TEM'5 Fs ow cePAclTV is tiet Af aut AED.

< f. FALLOWlWE EACH EXTENDED COLD KWUTDOWN (> 20 DAyJ IN Most 5),3 y

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l. VE AIFJ1Ws TM AT THERE IS A FLOW PATW BETWEEN E ACM AustLIARW FEED-W ATE R PUMP AMD E ACH STE AM GEMEA ATD A s y PUMPsNS c eH DEt4 5 ATE" S roe AGE TAwk W ATER To THE E T8 A M 'a sus.R 4reR. T ng.ra o w PATM TO THE ETE AM ER NER ATo R JNALL BE VEREFlED a v EITHER ETE AM GE NER ATeR LEVE L C HANE E 01 AUXILIARY FEEDWATE R. SAFETr GRA0E Flow INDicAvson, VE RIFlC ATION OF THE AUKILEA R V F(EDWATE R s yJTEM's FLOW CAPACITF la NOT A ESulR ED, NOTE ' WNE W CONDuCTINr. TR ETA OF TME AUKILI ARY FE E DWATER S YS TEM IN MODEEIga,AND3 WHICH R E $UIR E LOC AL M A NU AL R E A Ll6MNIENT ,

OT VALVES TH AT M Ak.' THE syJTEM INDPER ABLE , A DEDIC ATED IN DIV ID U A L $ MALL BE 5 6 ATsoHED AT THE VALVE 5 (IN COMMUNICATION I WITH THE C.ONTRDL RODM) ARLd TO R E STORE THE F A LVE S TO NORM AL K y3 TE M O P E R A E L E L TAT US .

Amendment No. 41, 63 DAVIS-8E55E, UNIT 1 3/4 7-5 I

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