ML19224C187
| ML19224C187 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/16/1970 |
| From: | Ippolito T US ATOMIC ENERGY COMMISSION (AEC) |
| To: | US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML111230347 | List: |
| References | |
| NUDOCS 7906290318 | |
| Download: ML19224C187 (10) | |
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..s The frurth nd last of a suci2s of teci.nical teeting:
- s cid cn Fv:rutry 25, 1970,*,1th.epr2;entativas of '.1bcoch cad lilcor (" W) ccac2:ning the enclycis of syc..eaat!: failurcs in their rea::ar laid up nd-r o t : c t :.- systen.
The issu nce of tm :s2 ninutes
.23 e
ing
.e ce ipt of furd.er infar n ica frc.: ' ' *.
T.: e L a* prcsont.cica concis t: d of cncl,.:es of the trnasients r;.:ulting fr:
rad cap, n 'iatica in seconjary land
'arbine Trip), and t:u cannca. a
- ety f 2.
ur: failures.
T:. -
pr2sentatica ec s cencluded u<:h a su.
ary of
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all th2 pr2vieu: analyr.es and c sch2d;1: fer the c 6. scion ci "ani (tegical) report of this inv2 s t i p t ion.
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.eu, tier.s, th, reactor at n o ca l full pm. -
eparati.,a en a ced c:.:rol d
synea failure.
Table 1 nd ri;u re s 1 ::raugh 6 N.i Sc reau. irs of this in.2stigczica. t r '. -.ns red ucr.hs.:t the
'c _ ;inni.g ' 7d end of 7tfe, and with and witho s te s:: 3enerrtor runbach.
Tcbic 1 the es that there is no backup cip for aertain beginning of 1;f2 c:a61tions.
"% presentation of the t ansi m ts resultine fro:
2 c a d a rv, side lead u
ch a n <;e s considered both a turbine trip cad a cocp* te loss of feec-uater fl.ov at full poecr.
The graphs c.nd t:bles for th3se cnalynas w2re not availcbic r.nd at cur recuest EC7.ssreed to - sil co'ics.
This iafor-atica has not been received to da, c.
Eever r, the infara;: ion presented indicated (1) that either high outlet turpercture or high reacior pressure would terminate a turb.ne trip trencient in the event of
.h e failure of the high flux trip, and (2) that the high outlet temperature sculd O rainste lor s of feedvr.ter t r ar.c ier t caould the high reactor pressure trip fail.
257 056 79062903gg 9
3
4
-4, r..es
- ril 15, 1370 Vith respect to 2n 2.n e r e d
- c. : f u t y 11. n :: - arc; m.tation, it was chorn
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_w reactor precsure or algh reactar aui'.uing p_ ezsure.
'.Di did not - 21 Le the loss of c2olant accioent.
JVi a;rced to include this anal;. sis in their final report which is schaculed to be co;pleted in a'aout thiee conths.
/
q/.
v w - -:
T. AI;Ippalito E S3 -16 Electrical Systers 3rcnch DRS:ZSO:TAl Divisien of Reactar Stind rds Encle s u r a s :
1.
Prelir.inary Figs.
2.
List of Attendees cc w/ encl:
E. G. Cese, D3S
?. A. ?: orris, DAL F. Schreader, DRL
. -coya, __.
n
. unu D. J.
Chovholt, DRL R. C.
DeYoung, DRL AEC Attendees 2,
m 03/
e
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TABLE l - DROPPED ROD ACCIDEM W/ RUNBACK 4
i R00 VIORTil a
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Ak/k 0.06 0.10 0.16 0.20 0.28 0.au BOL HIGH HlGil lil GH HlCli
- t10 TRIP L O!!
PRifaARY TRIP PRESSURE PRESSURE PRESSURE PRESSURE PRESSURE 1
SQL HIGH lilGli li!GH HIGH
- t,0 BACKUP TRIP CUTLET TEl.'P CUTLET TEtaP OUTLET TEf/P GUILET TEiaP BACKUP a.
EOL NO Hlca
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}jica PRl!iARY TRIP TRIP FLUX FLUX FLUX FLUX FLUX
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BACKUP TRIP lil Gli HIGH nica algg OUILET TElaP OUTLET TEta?
OUTLET TEtaP OUTLET TE:aP t BACKUP l:0T NECESSARY N
HIGli OUTLET TE:,'PERATURE TRIP GCCURS FIRST BUT DELAY TitaE ret 40ERS TRIP ll4 EFFECTIVE
(
Uhill AFTER lilGH PRESSURE TRIP.
CD **
HlGH OUTLET TE!!,PERATURE TRIP OCCURS FIRST BUT DELAY RENDERS TRIP lhEFFECTIVE UNTIL AFTER HIGil FLUX TRIP
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1 CONT'D TABLE 1 - DROPPED ROD ACCiDEtli tid Hut 18ACX i103 IiGR Til
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