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LER 99-011-00:on 990816,improper restoration of "A" APRM caused monitor to not meet seismic qualification requirements.Caused by lack of knowledge.Page latches for other APRMs were inspected & no anomolies were found.

-NRC F0fRA 300 U.S. NUCIJAR REGULATORY manasaa"APPROVED BY OMB ND. 3150 0104 EXMRES OS/30/2001|}190e). So.73(aH2)(N) So.73(a)(2)(x)LEVEL (10)20.2203(a)(2)(i) 20.2203(a)(3HN) 50.73(a)(2)(iN) 73.71, fa2o.2203(a)(2HN) 20.22o3(a)(4) 50.73(a)(2)(iv) oTHER: > ( m,g&; s ,a' g;20.2203...

Forwards rev 23 of physical security plan for CPS,IAW 10CFR50.54.54(p).Rev does not reduce effectiveness of physical security at CPS.Plan withheld.

.*llhnois Power Comp nyisClinton Power Station !P o Bon 678 )Chnton IL 61727'Tel 217 9 4 8831. .Joseph V. SipekhDirector . Licensingu w .. co.y.e,U402842'8E.160October 6, 1997Docket No. 50-46110CFR50.54(p)Document Control DeskNuclear Regulatory CommissionWashington, D.C. 20555...

LER 89-007-00:on 890122,incorrect operability determination due to insufficient review of source range monitor status results in core alterations w/o required two operable source range monitors.Shift supervisor counselled.W/890221 ltr.

- _ . _ _ _. ,,*N C evin 384U.S. NUCLE AR 6.ETULATOXY COMMISSION/ APT 40VED OMB fdO. 31504104.LICENSEE EVENT REPORT (LER)Ex''REs: si3=.F ACILITY NAME'(1)DOCKET NUMBER (2) PAGE (33Clinton Power Station0 |510 |0 | 014 |6 |1 1 |OF|0 |6'"''''' Incorrect Operability Determination d...

Defers completion of corrective action described in special rept dtd 911017 re temporary inoperability of HVAC stack high range radioactivity monitor from 920228 to 920430.

..i . fI.-.f..er(thros Pont Company-Choton Pcwet Staton ;P O 0 x 676 :*-Chnlon, IL 61727let 217 935 884B1;ILLIDMISiP&WER $0. tp' 'UE.100c'March 16, 199.10CFR$0.36i!Docket No. $0 461Document Control DeskNuclear- Regulatory Conanission[Washingten, D.C. 20$$5 : ,Subje...

Monthly operating rept for March 1996 for CPS.W/960404 ltr.

l! .le,,'*.,*lihnois Power Cornpany.Chnton Power StationP.O. Box 678Chnton, IL 61727Tel 217 935-8881PGWERt'-6 2571L30-96 (04 - 04)-LP8E.100c|April 4, 199610CFR50.36||Docket No. 50-461|'I.S. Nuclear Regulatory CommissionDucuruent Control DeskWanington, D.C. 20555Subject: Clinto...

Special rept:on 930927,valid failure of Div II DG occurred during surveillance testing.Caused by insufficient contact pressure between contacting surfaces.Contact pressure checks to improve component reliability implemented.

;V ,lihnots Power Company4.Clinton Power StationP O Box 678 ,II 3 e 81 -ILLINSISu co2i93P4WERuv.93(io4 2 >te8E.110cOctober 12, 1993 ;Docket No. 50-46110CFR50.36,Document Control Desk iNuclear Regulatory Commission'Washington, D.C. 20555Subject: Special Report: Valid Test Failu...

Monthly operating rept for Aug 1993 for CPS,unit 1.W/930909 ltr.

i|. .|!( Noots Power Compa^y| Clinton Power Sinon!I| P O Box 678t Girvor, !t. 61727f,d$Nb|b ! Tei 217 935-8k81/{#QQf$QU-602185L30-93(09 09)-LP8E.100c5 e p t e%e r 9, 199310CFR50.36Docket No. 50-461U.S. Nuclear Regulatory CommissionDo c u.ae n t Control DeskWashington, D.C.2055...

Monthly operating rept for Jan 1994 for Clinton Power Station.

, . . . - .!, y y,..Attachment 1 .'to U-602252~Page 1 of'4''',,itt! .;CHALLENGES TO MAIN STEAM SAFETY / RELIEF VALVES ,,MonthJanuary 1994 ,aLNone||>|,.r..i.I,r|,,k!'[dI9402150357 940207PDR ADDCK 05000461 tR PDR f;I i.;_ _ _- , , . , ._ .. - . _ . - _ . _ . .!6. . --,-i

LER 93-007-00:on 931220,discovered incorrectly positioned steam flow control valve due to operators lack of understanding of design of valve's controller results in saturated OGS.Revised sys operating procedure.W/940117 ltr.

* *lilinois Power CompanyClinton Power Station,*P.O. Box 678Cilnton,IL 61727Tel 217 935-6226'Fax 217 935-4632J. Stephen Perry,Senior Vice PresidentHE.E.E M HS u-602237POWER US-94( 01- 17)LP2C.220January 17, 1994JSP-024-94Docket No. 50-461 10CFR50.73Document Control DeskNuclear...

Proposed TS 3/4.4.4, "Chemistry," re performance of engineering evaluation to determine effects of out-of-limit condition on structural integrity of RCS.

. . . . . -5 andacclTec.bnicareference pecificmon 3.d.hvided he_ _ ,on Iy . g T ':'tS-92-017PJACTOR_ C00LNiT SYSTEM3/4.4.4 CHEMISTRYLIMITING C0tt0lTIOH FOR OPERATION3.4.4The chemistry of the reactor coolant system shall be maintained withinthe limits specified in Table 3.4.4-1...

LER 96-003-00:on 951118,failure of procedure to recognize MSL radiation monitor detector housing tube as secondary CL path resulted in operable secondary containment during corrective maint.Revised procedure.W/960402 ltr.

_ . _ . . . _ , _ .. _ . . ~ -.. _......m_. - . ~ _ . . - _ . _ _Illands Power Company .,_Clinton Power StationP.O. Box 678Clinton,IL 617270*Tel 217 935-5623Fax 217 935-4632Wilfred ConnellVice PresidentILLIN915P&WERu-6o25682C.220WC-116-96IApril 2, 1996Docket No. 50-461 10CFR50...

Proposed tech specs,proposing to revise TS 3.6.5.1, "Drywell," to allow drywell bypass leakage tests to be performed at intervals of up to ten yrs based on demonstrated performance of drywell barrier.

_ . . _ . . _ . _. _ ._.. _ . . ._ . .. . _ . _ _ . _ . _ . .;e:. 'Attachment 3 ,to U-602549;LS-%-001...Page1of10-!8-t)i-:<.!,!*2- ,4!:>t:i!,Attached Marked-Up"Pages of the Technical Specifications;:-!.;,.!!!-ti ,,44Ife'!,.ii~!44-'i+)m;-, ,4,3:,.'.b-'k ','9602290039 960222' '!...

Responds to NRC ltr re violations noted in insp rept 50-461/99-01.Corrective actions:calculation 19-AK-05, "Calculation For DG Load Monitoring," was revised using correct horsepower for hydrogen mixing compressors.

7Ilhnois Power Company* '*P.O. Box 678eChnton. IL 61727MTel 217 935-8881 x3900Fax 217 935-4632|fJohn P. McElwainChief Nuclear OfficerILLIN9BSNRu.6o32i34F.i90An !!!inova CompanyMay 28, 1999Docket No. 50-461Document Control DeskNuclear Regulatory CommissionWashington, D.C. 20555...

Forwards LER 99-001-00 re improper assembly of motor that caused degradation of bearings in two divisions of shutdown SWS.Commitments made by util,listed.

- .. ~ ~ . .- . . - - . ~ - . . . ~ . . ~ - -- .I!!inois Power Company<**.. P.O. Box 678*Clinton.IL 61727*'.:e :iTel 217 935-8881 x3900 ;Fax 217 935-4632|John P. McElwainChief NuclearOfficer|RU-603168f2C.220 l- An Ittinova Company -March 1,1999 iDocket No. 50-461 10CFR50.73 jj...

LER 97-030-01:on 970805,failure to verify RCWS was available as alternate means of shutdown cooling was noted.Caused by procedural inadequacy.CCWS alignment was changed to provide cooling to "A" RWCU non-regenerative heat exchanger.

~ - - . . -.-.- _.-.- - . - _ - _ - - . . - - - . - -- - . - _ _ - - - _,NRcF0fesaos u.s. NUCLSAR REGULATOPY 000 AMISS 1086A88sDVIe av eMe on. sitestoe ressuse4 m esi4,ses__(STIMOTfD $U8IDEN MQ MSPONet ?O COMPLv WITH VHit MANDOTORYMout0Ts 60.0 HRS. REPORTto Litt0NSCOLL,ICTIONI...

Forwards LER 98-008-00,re Division I hydrogen & oxygen analyzer incapable of meeting design basis due to an excessive vibration condition on air compressor.Caused by personnel error.Commitments made within ltr,listed.

_,Ilknots Power Company-Chnton Power StationJe aP O. Box 678[Chnton IL 61727Tel 217 935-5623Fax 217 935-4632Walter G. MacFarland IVnd Ch et ui fiterP6MRu-602975An Imnova Company 2C.220April 8, 1998!'Docket No. 50-46110CFR50.73|| Document Control Desk|Nuclear Regulatory Commiss...

Forwards LER 96-010-01, "Plant Shutdown Due to Unidentified RCS Leakage from Degraded Reactor Recirculation Pump Seal Greater Than TS Limit." Revised rept includes cause of event,corrective actions & discussion of similar events.

1litinois Power CompanyP.O. Ocx 678'e.~Cbnton,ll 61727*..Tel 217 935-8881 x3900 ,Fax 217 935-4632John P. McElwain.Chief Nuclear Officer.|ILLINSIS''POWERu a 3i22An Illinova Company*;Docket No. 50-461 10CFR50.73Document Control DeskiNuclear Rp=*=y CommissionWashington, D.C. 2055...

Forwards LER 98-010-00 & 10CFR21 rept 21-97-060 re inoperable divisions 1 & 2 hydrogen & oxygen analyzers due to inadequate commercial grade dedication of safety-related replacement parts.Commitments,listed.

lihnois Power CompanyChnton Power Station,gP o Box 678 .*Chnton. IL 61727 jTel 217 935 5623Fax 217 935-4632Walter G. MacFarland IVSenior Veeoresidentand Chief Nuclear OfficerP@MRU-602977An Illinova Company2C.2204F.140April 10, 1998Docket No. 50-461 10CFR50.7310CFR21.21Document...

Forwards LER 97-020-00 re failure to document effect of degraded coatings in containment on ECCS.Commitments made by util,listed.

if: 4''nnois Power Company-_Chnton Power StationP o Box 678u-Chnton. IL 61727,_ Tel 217 935-6220 - -Fax 217 935-4632--;_css stan Vce dent - Nuclear.." ' ' ' " " -..U-602811 -2C.220August 13, 1997ILDocket Noi50-461 -10CFR50.73Document Control DeskNuclear Regulatory CommissionWa...

ADAMS TEMPLATE QUESTIONSExample: License Amendment Package (TAC MA1234) which consists of thefollowing items:1. Transmittal Letter (amda1234.wpd) requires signature2. Service List (seabrook.sl)3. Amendment (amda1234.wpd) requires signature4. Changes to Technical Specification...

Forwards LER 98-030-00,re insufficient suppression pool makeup volume to meet design basis.Commitments made by util, listed.

Ilhnots Power Company,,, ,Clinton Power StationP O Bo 678**Clinton. IL 61727*Tel 217 935 5623Fax 217 935-4632Walter G. MacFarland IVSenior Vice Presidentand Chief Nuclear OfficergggU-6030832C.220An Illinova CompanySeptember 28, 1998Docket No. 50-461 10CFR50.73Document Control ...

Forwards LER 98-021-00,re cracks in medium & high density silicone penetration seals not per design basis.Commitments made within ltr,listed.

Illinom Pov.er Cornpany ...,Chnton Power Stat:on{P o Box 6783Chnton,IL 61727| *'Tel 217 935-5623IFax 217 935-4632,Walter G. MacFarland IV iSenior %ce Preudentand Chief Nuclear OftcergggU403%6;2C.220 ,)An Illinova CompanyAugust 18,1998j1!]1IIlDocket No. 50-461 10CFR50.73{lDocum...

Transmits current rev for App V of plant ISI Program Manual.

e)3.gOfilinois Power CompanyClinton Power StationP.O. Box 678Clinton. IL 61727 |Tel 217 935-8881 IILLIN9IS,P&WER70#288.22u"1 A.120iAugust 22, 1996Docket No. 50-46IiDocument Control DeskNuclear Regulatory CommissionWashington, D.C. 20555-Subject: Submittal ofCurrent Revision fo...

LER 98-015-00:on 980405,ESF actuation was noted.Caused by shorted diode in NSPS.Replaced shorted blocking diode & tested other diodes for defects.

. - _. = _ _ . . _ _ _ . - _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ - - - _ - - _ ____.NRC PORM 366 U.S. NUCLEAR REGULA1 DRY COMMISSION APPROVED BY OttB Na alSD.elas(&95) ExPlasstemaseErnMAND C3ODEN PER RESPONSE M COMPLY Ornt DHS MANDAM3TINFORMATION COLLRCHON REQUB5T' 50.0 PRE REPORM...

Comments on petition for rulemaking PRM-50-47 re requirement that all nuclear utils rept all employee-identified concerns on wrongdoing activities & establish concerns program.Such program should be at initiative of each util.

DOCKET NUMBERU-600873'PETITI N RULE _PRM gg/[](03-14 )-L5A PR4 iso),OxKETED/LLINDIS POWER COMPANYvinRCCLINTON POWER STATION. P.O. BOX 678. CLINTON. ILLtNOIS 61727'87 liar 17 P2 :41March 14, 1987,0FFICE OF ..u ; 'N '00CKEii% r. SU'VICI.BRANCHDocket No. PRM-50-47Secretary of the...