ML20090H869

Discusses Reasons for Selecting HPCS & Class IE Ac Electric Power Sys as Basis for Vertical Portion of Independent Design Review.Sys Offers Range of Functions & Technical Disciplines

ML20090H869
Person / Time
Site:	Clinton
Issue date:	06/26/1984
From:	Parkinson G BECHTEL GROUP, INC.
To:	Geier J ILLINOIS POWER CO.
References
BLI-04, BLI-4, NUDOCS 8407270242
Download: ML20090H869 (2)

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1 Bechtel Power Corporation f ($ful486*. CMb,li, a#wt

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AladO War as: P.O. lmat.)4dW.cer.ramesi% CA tisdiffs Jtate 76. 1904 SLI 44 th'. J. O. Celer.

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. 600 Senth 77th Street Decatur,1111nDis f'2525 Sub. fact: Clinton In3crendcnt. Design Review-Job Ito. 154Ri-003

,Syst ete Select, ion Justification __

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.Cear 14n. Ceters .

in our Ictter. (BLt-03) to you of June 20.1984, 5cchtel suggested the vortical review portion of the Cilnton Pownr Station 10R be tia':cd on two sytests: the high pressuraThese core sitray system.(HrC5) and the Class 1-r at systes permit a congirehensive rt.vfew of electrical power. systte, design activities both functional and discipline related. In additicn to the direct. system. design, design of etiter faellities will ha considered associated. For where they are physically coupled or othetwisc closelyltting evaluation of

each systwa installation should tea well advanced pcte tite full range of AE at.tivitites.

t the systes permit assesservit of the AE Frem;the functional standpoint, t-itS55 interface, and design Interfects i design and dr. sign process, the A for the AC with vendors or contracters. They pitvida good exaagiles of retcrunt engineering and design activities including seismic considwation$s nuclear, safety analysis. Hl'I.e/let.t.8 design fire protection, systemitnteraction revleus and. environmental qualif tcations.

the two systes selected paistt a From:a Lethnical dist.tpline sted;.olnt, lines including anchanical, good evaludico of design by all discip electrical, control and. instrumentation fluid systsss and civil-structural engineering and design. Insfeht into associated areas is aleu readily avellable through HPCS ed St.C5 pipe support, structtral ,

steel omhndments'and connectietts to essic struct4sral met'ers and  !

foundations.

TMs Hl'C5 system.bes a broad design involvesset ttie datallwherefn.thedesten by thecriterta A-Chas la .

been established by the M55$ supplier, free a var.iety.cf sourcessit fe a l reviewed by other:6 ud ttis supply is i major safety systm.for fluids, functions over a wide pre.suure-tesq'eraturm '

range, and must reflect enny operating andes. The design should be 4 ...

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• J. D. Gefer June 25,1964 ,

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representative of other fluid system designs. h ac power system.is-substettally established by the AE, is reviewed in d(fferent ways, a0d is the basic puwer supply for safety-stiated electrical equitehnt. It is also an area Witch has toon revie=ad less cannonly in ottor. Miated reviews, and should serve to compleant times We trust our. basis for system.selectics is satisfactory attd wo will bo eed to discuss the subject at the meting with @e NRC on Juca 28, Very truly yours,

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6. L. Pettinson Project Nanager CLP/cW/rly ce: Jamc Hithcan, Nr.c e

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