ML20099D114
| ML20099D114 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 11/14/1984 |
| From: | Victor H ILLINOIS POWER CO. |
| To: | Parkinson G BECHTEL GROUP, INC. |
| References | |
| F-0997, F-997, NUDOCS 8411200202 | |
| Download: ML20099D114 (6) | |
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. lLLINDIS' PO WE COMPANY
- ]*D }'t - cuNtoN rown stdrioN, P.O. Box 678. C November 14 1984:-'
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-Mr. Gordon'L. Parkinson.
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1Bechtel Power Corporation-Fifty Besla Street San Francisco, CA-94119 Dear Mr; Parkinson Enclosed.is S&L's response to Observation Report Number 25, Rev.~ 0.
~ This response has been reviewed by Illinois Power.
1 Sincerely-yours.
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=-H. R. Victor Manager.
Nuclear Station Engineering
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- Obse rvation :and : Resolution? Reports ; '
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. Dear Mr.<Geier.
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.'.. Enclosed isja-copycof(th'e~below'.111sted1 Resolution Reports with the proposed resolutionJ(Items 5 andi6)?: completed.by Sargent & Lundy:.
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Resolution Report Number 2'5,~Revi' ion'01 I
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' Resolution Report Namber'26,? Revision ~0 We are 'also enclosing a copy of the' corresponding. observation Reports?
for completeness.
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~Please review our. proposed resolution and,'if you' concur,-sign Item 7
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of the' Resolution' Report and' forward thc/ report to the. independent..
reviewer.
Also, please. return,a copy of the signed' Resolution Report
'i to Sargent & Lundy for our records. -
Yours very truly
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R. C. Heider Project Manager RCHand Attachment - all recipients i,
D. P. Hall E. L. Branch L
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Victor.
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W. G. Schwartz
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.CLINTON' POWER STATION' V
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OBSERVATION REPORT- -
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File No.2 25 - ;
' File: Revision No.'
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.Date October ZZ,1954 9:
E1.f. Level 1. classification of' Observation:
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"'Notsignificantlto' safety; L.'.
- T Additional information required :*See -5, "Recomendation for resolution" Significant to safety,, send to Level.2 Committee!
. 2. C StEucture(s)'; ! system (s), L or component (s)iinvolved:l
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sSW System,. '
. Motor and a r operated va ves>w t_.
, i h extended masses ~
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Description of..' Observation:
I iThe S&L modelfofImotor and-air operated valves 'with extended masses may bei more rigidithan the actual situation due to possible amplification through'
.the valve superstructure. There does not appear to'be a correlation i
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- between the way the valve yoke ts modeled and the.actualf stiffness.of the
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i yoke or frequency lof the valve superstructure / operator.
4 4.
Significance of Observation:
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.The potential exists that the calculated' acceleration lmight not be adequate, especially for.those cases when a valve is subjected to hydrodynamic forces.
i-5.- Recomendation for resolution (optional):
!-l' S&L should verify that the model for these valves adequately represents the actual situation, and that the calculated accelerations are justified.
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6 Signatures:
/eh s//Y Leviel gevAew comittee -
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CLINTON POWER STATION
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RESOLUTION REPORT Fil e ~ No.
25 File Revision No.
0 Date.0ctober.22,1W l'.; Resolution by Level 1
Internal Review Committee 2.'
Classification of Observation; a.
Not valid (see continuation sheet)
- b..
Not significant to safety c.
X Additional information required.
d.-
Significant to safety-
- 3.. Program ' resolution.is:
a.-
C1osed-item b.
X Action to be taken' by Reviewee 4.1 Review Committee signatures:
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Reviewee pro sed res,olution:
- a. Description of proposed resolution:
(See Continuation Sheet:)
- b. Basis of proposed resolution:
(See Continuation Sheot) 6 Reviewee response report signed by
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Illinois Power Co. Review :
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- CLINTON POWER STATION
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- Job 15478-003 RESOLUTION REPORT
- (continuation sheet)-
-File No..
25
- File Revision No.
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' Date A
S&L Description of.-Proposed Resolution for Observation Report File No.;,25-The method-used by SargentL& Lundy to model valves with eccentric
-mass.was-found to be' acceptable to the NRC. - The' justification
.for this modeling. technique is. documented in. Volume 19 of the FSAR,
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F-0997 L40-84(11-14)-L-18G.150b-
.Clinton-Power Station'-
Independent-Design Review Standard Distribution List Director of Nuclect BeactoriRegulation.
Richard J. Goddard,.Esq..
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. NAkt' i/[NrhAUSchwencer.:-Chief : d Office of the Legal. Director a
Licensing Branch No. 2 U.-S. Nuclear Regulatory Commission Division of-Licensing Washington,-D.C.- 20555 JU. S. Nucleac Regulatory' Commission :
. Washington, D.C.
20555f Don Et'chisoni Director,LI111nois-Department'of James G. Keppler-Nuclear Safety-Regional Administrator
-1035 Outer Park Drive Region-III Springfield, Illinois' 62704 U.-S. Nuclear Regulatory Commission-
'799 Roosevelt Road Allen Samelson, Esq.
Glen Ellyn, Illinois 60137 Assistant Attorney General
. Environmental Control. Division Byron Siegel-Southern Region-Clinton Licensing Project Manager
-500 South Second Street
' Mail' Code 416 Springfield,-Illinois.62706 U. S. Nuclear Regulatory Commission Washington, D.C.
20555 Jean Foy
~Spokesperson, Prairie Alliance-Fred Christianson' 511 W. Nevada
. Mail Code V-690
_ Urbana, Illinois 61801 NRC Resident Office Clinton Power Station Richard Hubbard R.R. f3, Box 228 MHB Technical' Associates Clinton, Illinois 61727 1723 Hamilton. Avenue Suite K James L. Milhoan San Jose, California 95125 Section Chief Licensing Section Quality Assurance Branch Gordon L. Parkinson Office of Inspection and Enforcement Bechtel Power Corporation Mail Stop EWS - 305A Fifty Beal Street U., S. Nuclear Regulatory Commission P. O. Box 3965 Washington, D.C.
20555 San Francisco, California 94119 Richard C. Knop Roger Heider Section Chief Sargent & Lundy Engineers Projects Section 1-C 55 East Monroe Street U. S. Nuclear Regulatory Commission Chicago, Illinois 60603 799 Roosevelt Road Glen Ellyn, Illinois 60137 i
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