ML19220C702
| ML19220C702 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/30/1979 |
| From: | Office of Nuclear Reactor Regulation |
| To: | Harold Denton, Mattson R, Stello V Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7905140051 | |
| Download: ML19220C702 (5) | |
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f.RR TECHNICAL REVIEW TEAM k*as t inghcuse is proacsing to bu:Id a OMR syrt e n to serve as a backuo to tha :xis t irg OMR sys tem that.culd be operative in approxi.ratcl / 15 days._ Ihis syste.n would at best be of the saae quali ty of the existing syste:, and would not preclude 1 e:'< a g e since flarg d connections and pumps ith -echanical :cals - uld be used.
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'le have reviewed the proposed system design and sugcest that it be modif'rd a pr: vide as leak tight a systcm as paisible.
This would r?quir'e:
,elding of flanged cennections pressurizing between double gland valve seals sealed pu,p (i f available)
This alternate approach could tate $ to 10 days longer.
id:s the pros and cons of :he designs.
Enc;:sure IncI:sure 1 rv 2 sr:v ries ac:2?:!b:
dose l i., i t s for A;pe., dix I and ~irt 70.
It is c.e r ev : e.v.. uo spinion that as itzk tight ; s y s * :, cs p;ss ible Le desig,-c within a reasa ble t i ce restraint which we crasider to ha 30 eys r.aximum.
" R R TE CH N ! CAL R EV I EW Tf_AM 051 7905140
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'f ?.HR DESfCN Ti.cly Sck-Up Capability (15 Cays)
C nc mo r e* s y s t e::t which buys additior.al time down the r ca d f o r f i c.v and cooling capability.
S*sid cent.cpt buys HP advantage in installation and rer.aval.
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CCN - V_ OE9IG4 Not better and could be worse than existir.g system R. W. T.
Leat: age (K3ch. seals on pumps, valves with single packings (?),
and fianged connections) - patentially ur.+cceptable of fsi t e dos 2s._
Fhysically large heat e<cFanger not needed for heat but for fl ow (hard to handie) (son't fit on skid).
101 169 m
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$.:iC ALTE:'MTIVE Leaktight system with ir.,ard Icatage (w e l de d cor.r.ec t i o n s ).
Longer term operability 5 aller heat Rx with bypass loop could nount on one skid I
S i.,p l e r Installation G r ea te r a s s urance o'f 0.A due t o l onga r lead ti: c Setter monitoring capabilities (ISC)
_CO__N. *: R C A L T E :,':ATIVE 1.on;er time nc;-ded to obtain (p e. gs, val ves )3a s s e r.b ! e, and
'tbricate (;I 2 0- 3 0 da y s ).
Additional piping (:3 3/4) r. ceded for pos i t i ve s ea l i ng 3 cster pump r.eeded to assure leakage in proper direction.
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G P: R i C CC':S I DE:ATI C' S AdditI e.al !cading on arxi1iary buiIding Tirely clean-up of auxiliary building Functionability of AHR valves inside containment Tieing into existing lines Seismic Cens ide ra t iqn 4
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_ TIME / CAYS A L L C.JA_:dE L E A K 2A TE I N G PM TO M ET APPEN31X !
FART 20
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.05 1.2 15 0.17 5
30.
0.68 20 50 5.60 80
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