ML20198G455
| ML20198G455 | |
| Person / Time | |
|---|---|
| Site: | Satsop |
| Issue date: | 03/13/1975 |
| From: | Oreilly P Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-1310 NUDOCS 8605290601 | |
| Download: ML20198G455 (5) | |
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fan 131S5 511 SC-Sor aro kcchinrtoc Public Power fupply Syrte-. (6.tygs) ti"8Fe systen war M'Sf 1.uclear Prcject s ro. 3 are ro. 5
- fatM Y 25. 1975 hfITI% LIn Vppsr kiCAtLIK GECNNDW T be sbort into the A EF LRAll4GE 5, IC75. Terrescot&tiws of EPPSI ard ! bas 11 t.c chone throute seda.
WFPSb hav rec ucated co set with the FTC whater trainoec sys;ter for bFl:C tucl the ecct inr it. order to discuse the ct cttendecc it, ear Projects I;o. 3 and
',, ti e tunnel will h attached.
ir ter ior.
T h ef'
- od c brief descrirtion buildirr.s (ece of the site area Litete visuel inspectict and the f or each crit ) et locaticn cf tte o dypI4 5f.ed tlt.t the CunceJt of In introductory the site.
crecreetly lover the croundwater level atthe prcunc'k&ter draIDaRe c c' ir ti.e loI IOTr i"P et.d repairable the cystei shouldgravity dreir.ere the site etith systcc around cech Category level suel fail. Ecaece claioed that it will take te drilld ""'
""i"I a Icrr tire to recever that cre the proundwater level excee:'e the syste:r cco stren, et veter.
the decise level.
the freundwater drainare rystee Art the followitet evert water from seerie,s throurt tr.e ulctions of the effec M foundation walls, ability for the reci cf
'.ieve fee walle of hdrostatic loaci a rair f r 11 percolat10" er.
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reve stability conditiers under earthot ah loadic r.
recse sloe frictice on ene tictis, g g,y Ebsere see cuantities reeovec durint exceva t f or..
ilcate outside fort:s ou the walls and uter prooting.
In ne the bac) fill detween the wall and the rock f ace of
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cv; tion, ibed tne groundwater drainate suaed f or inpermeable rock.
)sied at F. 5 f t.
syste.
nine cxtend fren plantintervele arounc the CateFory I buildi1he avstee consiste of trade ngs.
to tre base of the foundation concet with ac F ir. borizontel header which collects th t la ther b th urits etreuted vis -achc!re te a 6 f t, diaireter drainase e
- clair ec unlikel).
tu.* tecility) that draiae itto Workean Creek p
ger if tre dra it's ?
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8605290601 750313 PDR ADOCK 05000508 A
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gir.c 1 o 1975
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Tbasco stated that total failure of the drainage syster would restle in the Rroundwater level risicg from the pottom of the foundation nat to 2C ft.
above t he bot t om of t he mat in a period ranging f rom one month to 3-1/2 yesrs.
The one mor.th estimate was calculated assuminr a perocability of C.5 x Indi ce/sec and a rainf all percolation of I-2/3 in. per month. The 3-1/2 year estieste was calculated assuninr the save permeability but no rainfall perec1stion.
Ebanco described how the drainage systen it prctected from t 'i e tellcwirr harard?:
(1) !;stural phenorene (a) Finod free heevy reir - tne grocnd slopes away f rae the raterorv I buildings and will route the water to the site store drains. Any rain water er.terine tbc rround will drain thrcuch the preurdwater dreirage system.
(b)
Earthouc' ee - the eroordwater draitare system is not Category 2.
r (c) Tornedo - the proundwater drainare syster is entirely below.-r4de.
(2) Accidental phencerne (e) Coeline water pire brer.i icside a Catercry 1 buileirr - the cruero-water syster is iselst ed by the walls of t r.t buildinr.
(b) Ccclin-water pipe break outside the Ceterorv I buildire - pirce a re seperated fror orainare syster. by rock, besultier water vill drair te site store dreirs.
At our request, Ebasco described the tests perf orr.ed to obteir tbc u rseabilities used in the desitn analysis. The guestion of whether the systen should be classified as Category I was discussec. Assuming that the systec is rot classified Category I and fails, the time required for repairs was theo dis-
- cussed, We stated the following contenta about tne proposed groundwater drainage system:
i (1) At least the eenholer in the syster. should be classified as Catecory 1.
(2) l'os t ule t ed failures of outlets should te addressed.
(3) Insrectice procedures should be clearly establisheti. Croundwater level cutside building should be e,onitored durint construction and s i s( during the operating life et the plant. kith such a monitorine prorro_,
defiritive interration about Troundvater level cherecterist ics will Le available betore the operating l icen se. stare.
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M G * '? 1975 (4) Adeenate capacity of the systee should be assured by pu=pinr test dcte.
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(5) Timely repair capability should be assured, This is related to (4) above.
kFPSS stated that the details of't'he troundwater drainage system would be submitted with the resporser to the staf f's second round of requests for additional inferaation.
Original Si.med by Patrick D. C.';my Patrick D. C'P.rilly
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LI ht Water Recctors F
Project tracch I-3 r.ivis tor of I:cactor Licerrier inclosures Atter.darce List ec: sec pere 5 i
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.cc: Washington Public Power Supply System
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e ATTN; Mr. J. J. Stein "i
Managing Director 3000 George Washington Way s; -
Richland. Washington 99352 N7 Joseph B. Knotts. Jr., Esq,.
Conner,'Hadlock & Knotts 1747. Pennsylvania Avenue, N. W.
Washington, D, C.
20006 lf; RicM rd Q. Quigley, Esq.
Washington Public Power Supply System
'3000 George Washington Way Richland,' Washington 99352
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ENCLOS.U.R.E ATTENDANCE._ LIST FEBRUARY 25, 1975 MEETING WITH WPPSS Nuclear Regul_atogConr:nission Was,hin,gton Public Power Supdy,Syst,eg F. O' Reilly D. B. Whitford
- 1. Sibweil G. C. Sorensen C. Y. Liang L. G.
Hulman D. L. Milliken J. T. Greeves Ebasco
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D. Jeny T. Jchnson W.
D. Rezak R. J. Norman A.
H. Wern A.
W.
Barchas T. Raney