ML19221A355
| ML19221A355 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/03/1979 |
| From: | Marriott P GENERAL ELECTRIC CO. |
| To: | Stello V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7905210328 | |
| Download: ML19221A355 (2) | |
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CE CD1JJ.is Cri TICIE KILI 1511.C PfA'
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Per tM req =st of EE (Frcr.h Ash) of 4/2/7% lor'; P5T, E hs 16 follcuir.J m
mts es tb ra ctne pnssure oscillaticas.
6u ' 4ts cre sprulativo. but c:y provida sa 2 points to pcad:r fcr t6 site pmm-nl.
I Uith th liaited thta available this is'Es c:::ch as w:s tdll b2 able to cc::clede.
t' t:.;d ha bq:py 6 p2.rticipate in & cr.ch:u:ss, hc::ver.
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A revicu of tM m,T cscH14ticr.s obscnd at TI ta Kile Isic.d. Uaf t 2 us d2 fir:cd several possible e.es.
rc2.ar, e=e of tk p::ssible explcz: -
ticas can icdtvidnlly acc:nnt for all of th h:y cbserratices. TI:: ' n
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charuticas can be su::urized as
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(1) Prmsure oscillatic::s in A-1ccp bot I cre en crd0r of tOpitui:
him thm in S-loop (55 pst vs 4 pst.
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} (2) OscilTatic:is do not exist balcar a thrd:ald systra pressure
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bu.d (G psi trida ber.d), c::d rcrain at fired np.ituL-above the threshold systc:s pressure bcnd.
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~.(3) The la bc:.:r&ry of the threshold systa pressure bz::t bs t
,1 d=rtesed frcs atore 1000 psig to balc:s 850 psig crier tb last fes days.
p (4) Pressere ficctuatica energy is rc=:cx:Ty m
,.trated bales 2 Itz.
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,fessible ccuses for oscillatica cro discussd bales.
t (1) taal cuillaticas batreca gas vole = of pressurizer er.d ps volu=2
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7, in reactor vcssal. The ch:sg in t %-1d systes pressure with J
.. e tira cuald ba relatd to decrac.steg be.%1c sira in tk recctor T.
ressel. Gifferer.co 60ters f.-loca ad C-lcep press re t:::Jid hire
.g to t>2 mW hy sr :Sm. c7 stilar, in C-le::p line.
o.ne (2) r.::1 c;;illetica ed by local sub=cid biling c=d reid 43-t:-551 e c o l lr y,2.
This is Ica prch:Sility cha to leu p:::r.
_, P; Icicr!2 Fressure cffe I cipt to colsied by sicr2r t:651c cc11cpse tith 1crzr chlic3 d Ic r pres::::s.
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3 (4) Unrr.alistic c;;illaticas d::2 to (ps' f a,*. 'acep btt u tzp lica.
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..- e etth evailt.ble inferatics, d:a pcssibility cf real cuillaticas ha ~- - - - -
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