ML19208C847
| ML19208C847 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/23/1979 |
| From: | Rubenstein L Office of Nuclear Reactor Regulation |
| To: | Parris H TENNESSEE VALLEY AUTHORITY |
| References | |
| NUDOCS 7909270568 | |
| Download: ML19208C847 (3) | |
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c, UNITED STATES NUCLEAR REGULATORY COMMISSION QA4b'
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50-327 and 50-328 Mr. H. G. Parris Manager of Power Ter.nessee Valley Autnerity 5:3 Chestnut Street T aer II Cr.attanooga, Tennessee 37401
Dear "r. Farris:
RE;LiEST FOR INFORMATIO:, ON SEQUDYAH Er:iosed are requests for additional information by Reactor Systems Branch on Se;uoyah.
Year respor.ses are re:;uested by August 31, 1979 in crder to complete our review.
Sincerely,
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~w Lester '5. Rubenstein, Acting Chief Light Water Reactors Branch No. 4 Division of Project Management
Enclosure:
As stated cc:
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ENCLOSURE 212.0 REACTOR SYSTEMS BRANCH 212.X Frovide tne followinc inferration to resolve the staff's concerns whether sLfficient NPSH is available to RHR ou ps during a worst-case flow condition:
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- (V /29) has been a) s h e r. tr.at the kinetic head loss ter.
ap;r ;riatel;. fa :cred intt the !PS analysis by identi-fying tr.at it was included in t"e tur.;.anufacturer's s:e:ificatior of re;cired #10, or by including it in ve calcL'.a:iv.s pr:siced.
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pro ice pre:;erational test results v.hich denenstrate that fcr a ve: rs t cas e fic.. cor,di ior fic. vircugh the as-built E-:R p.,rps wil~ n : excee; tnat assu ed in tne analysis (4500 cali r.s per cir. ate).
Include discussion (s)/ data i n te r; re:c:i c e.
c serify the w: s -case fio.< condition (i.e. adcress the RHR au).iliary containrent spray) from the su.p and to ccr.frir that sufficient NPSH is available to the ECCS pun:s.
Infornation submitted on August 17, 1979 does not clearly address these concerns.
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Tennessee Valley Authority CCs.
Herbert S. Sanger, Jr. Esc.
General Counsel Tennessee Valley Authority 400 Connerce Avenue EilS33 Enoxville, Tennessee 37902 Mr. E. G. Seasley Tennessee Valley Authority 400 Ccn erce Avenue
'410Cl31 C Fr.cxville, Terr,essee 37922 Mr. Michael Harding
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Bc>. 355 Fittsburgh, Dernsy hania 15230 "r. Davic Lar'ert Tennessee Valle;. Au*.hcrity 403 Chestnut Street toner I:
Chattancoga, 'e.nessee 374: 1 i
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