ML20082G996

Proposed Tech Specs 4.8.1.1.2a(4) (E),Incorporating Changes Re Startup Transformer Secondary Winding Undervoltage & Loss of Preferred Offsite Power Source Diesel Generator Start Signals

ML20082G996
Person / Time
Site:	Comanche Peak
Issue date:	08/16/1991
From:	TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
Shared Package
ML20082G992	List: ML20082G988 ML20082G996
References
TXX-91302, NUDOCS 9108220204
Download: ML20082G996 (2)

Text

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Attachment 2 to TXX-91302 l Pase 1 of.2-

{_.!:*4::a. :: !: i !*iui

'w!':NG CaN01*: NCQRODERA?::N a:":N (:: tinvec) offs'te 5:. :e restorec. restore at least two of' site :' :e ts ::

!::E.! i st.s it-in 72 acurs f rom time of t-* a1 ':ss : :e . at eas*. -: 3 aN St .itnin :ne next 6 nours anc in CCL; 5 u';:a'. . t- ,

e *::. ; 30 c. s.

.itn t.o of t e accse recuired diesel generators t'oceracle. :emonstente

ne OPERAB:.;?< of t.o offsite A.C. circuits ey cerforming sur ei:-

lance Recuirement A.8.1.1.la. within 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> ano at least once eer i nours taereafter: restore at least one of the inoceraole eiesel gaaer-ators to CEERABLE status within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> or ce in at least .0T 5TANCBf

.itnin tae rest 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and in COLD SHUTDOWN within tre following 30 nours. Rest:re at least t.o ciesel generators to OPERABLE status tm n 72 nou-s

• em time of initial loss or ce in at least M0T STANOB< .itu n tae next 6 nours ano in COLD SHUTOOWN within the following 30 new s.

SURv!:'.i.ANCE REOUIREMENTS

4. 5.1.1.1 !acn of tre acove required independent circuits ee: ween tne Offsite transmission network anc tne Cnsite Class 1E Distribution System snail ce:

a. Determinec Ok!RABLE at least once per 7 days by. verifying :orrect creaner alignments, incicated power availabiti ty, and

a. Cemonstrated OPERABLE at least once per 18 9ths during.snut:: :y transfer *ing (manually and. automatically) t + 6.9 kV safeguar:s : s cower sucaly ' rem tne preferred offsite sou ;e to the alternate Offsite s:.ece.

4 5 . '. 1. 2 Each cd ese* generator shall be demonstrateo CPERABLE:

l' i.

In accor:aa:e ith the frequency specified in Table 4.8-1 on a 5 AGGERE: 'E37 BASIS by:

1) Ver*' ing the fuel level in the day fuel tank,

2) Verif,i9g the fuel level in the fuel storage tank,

3) Verifying the fuel-transfer pumo starts and transfers fuel from i the storage system to the day fuel tank, i

l 4) Verif;<ing the diesal starts from ambient condition and acceler-ates to at least 441 rpm in less than or equal to 10 seconas."

l All planned diesel ergins starts for the purpose of this surveillance may be preceded by a preluce period in accordance with vendor recommendations.

l OCMANCHF DEAK - iWTT 3/4 8-3 9108220204 910816 PDR ADOCK 05000445 P PDR

w=w Attachment 2 to TXX-913U2 l'ade 2 o f .1, ,

E.E:*8::4 M*E8 5'!*!"5 SLRVE!L<.ANCE REQUIREMENTS r:entiauec) __

The gervrator ,oltage and '*eovency sna11 e siGO : 650 .:'ts and 60 1.2 az .itnin 10 seconcs after t*e start s ';a s t " *'e ciesel generator sna:1 ce startec for tnis test ej .s the folicwing signals:  ; sae :*

s; "anual. "

T i, - gf{ . c.A 9 0) 5 tar; t+eetf0P-- ;cGGA4Fy.w&46449-vaq4 M M p p T S 9 0 ~

• zo e+-im+ ate: ' :: ole *eferre: cu m ; ;;_;: e, 3.uu , q L [ Simulated safeguarcs ous undersoltage, or

) ' '[ Safety In fectlen Actuation test. signal in conjuncta en

.it-7, .q mg ypf@offsitepower,or cl d Safety lnjection Actuation test signal by itsel'

5) W rifying toe generator is synchronized, loaced t3 tet.een 6.300 and 7,000 kw"* sne ocerates at this load conditien *: at least 60 minutes, anc

0) Verifyirg t"e diesel generator is aligned to provice stan::.

power to the associated emergency busses, .

t.

At least once per 31 days and after each o0+ ition of the c'es+

-nere the period of operation was greater t a or eoual to ; :. :j

necking for and removing accumulated water aom tne day fue' ' ' i.

At least once per 31 days ey checking for a removing acc.my: tie:

.ater from the fuel oil storage tanks;

. By samtl bg new fuel oil in accordance w';th ASTM-04C57 ME1 o'": t:

sedition to storage tanks and:

') By verifying in accordance with the tests soecifi ce d n H ~"-

0975 1981 prior to addition to tne 4torage tanks tant ; e sample nas:

' Diesel generator loading for the purpose of this surveillance may :e ac:: clisned in accordance with vendor recommendations; i.e. , >110 seconds.

"During performance of survelliance activities as a requirement for A07::N statements, t.he airaroll test shall not be perfermeo, n

This cana is meant as guidance to avoid routine overloading of ciesel generator.

Momentary load escursions outside tits bane due to changing tus loacs shall not invalidate the test, l COMANCHE PEAK - UNIT 1 3/4 9 4 j

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