ML19322C502
| ML19322C502 | |
| Person / Time | |
|---|---|
| Site: | Crane, Davis Besse  |
| Issue date: | 01/02/1979 |
| From: | TOLEDO EDISON CO. |
| To: | Lazar A BABCOCK & WILCOX CO. |
| References | |
| TASK-TF, TASK-TMR NUDOCS 8001170831 | |
| Download: ML19322C502 (2) | |
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TEW 5 0 %.
P. C. hex 12o0 Lynchburg, Virr,1=1s 24505 Attention: }ir. A. E. Latsr l
Senior Pro.1ect Kannper J
Davin-Besse Nuclear Pcwer Station t' nit :*o.1 l
Subj ect:
Dual Level Secroint.s c Secas.Ge=erators for Auxiliarv Feedvarer Systc=
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Dear A1:
telephone conversatio=s becween TICo and, the };?.C (':RR
[
Duri=; cur recch r
and CII Region !!1) en Ste== Generator Dual Level Setpoints,.7ECo was j.
requested to provide documentation in respe=se tofseveral concerns L
raised by the !.T.C.
The areas requiring docu=cstation arc listed below.
T
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- ICC75A, Revision 1Yuith
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I 1.
ico= para the s=all break a=alynis (3Nconsider:nn interi= oper.acie= and r
natural circula:1.~n test results C',4 W-ulti= ate ope:stien af ter the de.a1 level setpcint chent.c hss been t
Mr.1 ?
? lease note that TSCo had 'also requested 5&L' to provide b
Installed.
this infor=atica thrcuch TB'4-503 (Ite::: 5) dated Dece=ber 4, 1978.
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... Provide the ti=c duratics within which stea= generat:r level should pi 2.
be increased frc= 35" to 120" i= the event of a loss ei of fsite
}f.
followed by a s :11 RCS break.
How does this tice relate to MC3 pova:
the ti=e to peak hest load and"is there a need to re-do at 1 cast p
isons of the sus 11 break analysis 7 T.
On loss of offsite power. are the cool-down rateu within the Davis-p' 3csse U=1r 1 Technical Specif festien pressure-t,:peraturs 11=its?
I' 3.
5e,
Ia che coo 2-sto.n rate worse than that assc ed in der-vinc :
is :ne coel-don race fer the =a'in--
[.,
'I, to design cycle nu:-ber of 40? Alse, Av. a * :.- : ' r i -.
ste== line er ler.. ei f.:cd. ace r.u.
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-1:.3 3 %= W in :he y* C p-in the TSAK7 Also do :u-.ent t:c: ic/. :.r 2:M TSAR sre not. exceeded following a loss of off site power, loss of
- 6 El' feedwa:cr cr a =s1= sec:= line bresk.
r
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E the propcr spectru= of postulated LOCAs iProvide docu=caration that f
g; s 4.
11s now covered;at Davis-!!csse 1 in es=plian.:e with 10 CTR 50.46.
I 800117.0 N [ D i t-w name msw :::wsv to.sw m.:a sac e ave u at==. twee am -O <~ t
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ithi. t.:. su.:.c Picsrc n :e :bs:
-veur ebedule Ier cepictic; t.he 1:c.:s liss.ed act:ve.
1.er. 5 aherc =.is be re: rived b; T.co no: la:cr :.h=n Tc' ruzz-r 24, 1979.
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- 14 like t'o receive docu=en:a:1c en the other four ites.hv s.
Alza, 7 :sse 1=fo:=.: when *:<.e 4 and 1
7a.hrutt v ik 1979 if posiltle.
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6 of ';3W $03 v4 be prov-ded co ICo.
If you hsve any questicas or cars, please advise.
Yours very truly, 4.vi. p/ Y, fu'
/w Cha:1cs R. D:=c:k Suc1 car ?;oject Engineer
. Power Issinec;1=g n=d Cens: uctica
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