ML19262K570
| ML19262K570 | |
| Person / Time | |
|---|---|
| Issue date: | 01/12/1984 |
| From: | Szukiewicz A Office of Nuclear Reactor Regulation |
| To: | Stribling T CAROLINA POWER & LIGHT CO. |
| Shared Package | |
| ML19262K571 | List: |
| References | |
| REF-GTECI-A-47, REF-GTECI-SY, TASK-A-47, TASK-OR NUDOCS 8401190193 | |
| Download: ML19262K570 (2) | |
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Dear M.. $tribling:
Enclosed for your information and comment are two preliminary reports f ~r
!6aho 8;ational Engineering Laboratory (INEL).
(1)
- Report Conteming the Effects of Control Systevr' reilures cr m a-Generator 0=<7p n 2.*4 kes: tor Vess?1 Costant Systee Overco: lins !- t,
H a Typical net t apwse 3-Loop Flant
- EGG-EA-6473, da t 'd Derort: r 1983.
(2) %stf=pc.a 3-ttep Other TreWenix Fath,re Pbce.ind Ef fecu t-
,, r and Re.lecto:t System JustiNcation P3 port? EGG-E3.-6462, dated % + +
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.s Tkse preiir.inary reports identify tie statws of the INEt. review of a vnr "
idestinghouse 3-loop plant design for resolution of USI ba7
- Safety Isplie.ations of Centrol Systens." Thereporta(1/identifytheprc1%nar, criteria used to select cot.teD1 systeer; Whese 'tf oure could leed to potentially undesirabie treesfects or operating coditions, (2) provide the 4tlure se6e >nd effect analysis of the systems utfilzed fr. the 6esign arse (3) idertify systems erwl failmes scenarios that have been selected for edditfowl revics stilfritrg a plant siem1 ster to better assess the temsegwntes of their failure under segN$ntial or Cc2bir.ed f ailure redes.
3 The reports also identify systems that have been excluded from further retiew,
cad the h sis for th?fr rejection.
In order to accomplish our objectives and etnistre our i@act on the utilities to prwide ieforeation that was needed to conduct cur revin, th-Information sveilatele in-houw sad at our contractor facilitto was T
utilized. Engineering.hdgment based upon similarities in the design was
[a ewd tc supplement tk inforaaffon that was teeded, but not readily avaltab'e from the P,C lf t6es. Teer review and comment an the technical d
i T4 Mcuracy an4 the se of the control systems reviewed shd identified in I
T:TQese preliminary reports could significantly enhence our understanding of hhese systees and our conflGence in assuring a complete review of the dw 1
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- Mtant systers used during plant operation.
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