ML20217C836

Summary of 980319 Meeting W/Util in Rockville,Md Re Potential Fix for Issues of Degraded Voltage at Plant.List of Meeting Participants & Meeting Handout Encl

ML20217C836
Person / Time
Site:	Clinton
Issue date:	03/24/1998
From:	Hopkins J NRC (Affiliation Not Assigned)
To:	NRC (Affiliation Not Assigned)
References
NUDOCS 9803270194
Download: ML20217C836 (13)

Text

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March 24, 1998 LICENSEE: lilinois Power Company FACILITY: Clinton Power Station

SUMMARY

OF MARCH 19,1998, MEETING ON DEGRADED VOLTAGE On March 19,1998, NRC management and' staff met in Rockville, Maryland, with representatives of Illinois Power Company. The purpose of the meeting was to discuss the -

potential fix for the issue of degraded voltage at the Clinton Power Station. A list of the meeting -

participants is included as Attachment 1, and a copy of the meeting handout is provided as Attachment 2.

The licensee stated that due to previously expressed NRC staff interest, they had reviewed the possible failure modes of the static var compensators (SVCs) and had identified a new failure mode. The licensee revised the SVC design to protect agaimt the new failure mode. The licensee intends to submit a license amendment in April 19tns concerning the addition of the SVCs to the electrical system. The schedule is to have the modification in place prior to plant startup.

Original signed by:

Jon B. Hopkins, Senior Project Manager Project Directorate lil-3 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation Docket No. 50-461 Attachments: 1. List of Meeting Participants

2. Meeting Handout 1 cc w/atts: See next page NBC RLE ggMi CDM  !

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• • • • • March 24, 1998 LICENSEE: Illinois Power Company ,

FACILITY: Clinton Power Station -

SUMMARY

OF MARCH 19,1998, MEETING ON DEGRADED VOLTAGE On March 19,1998, NRC management and staff met in Rockville, Maryland, with representatives of Illinois Power Company. The purpose of the meeting was to discuss the potential fix for the issue of degraded voltage at the Clinton Power Station. A list of the meeting participants is included as Attachment 1, and a copy o;ihe meeting handout is provided as Attachment 2.

The licensee stated that due to previously expressed NRC staff interest, they had reviewed the possible failure modes of the static var compensators (SVCs) and had identified a new failure mode. The licensee revised the SVC design to protect against the new failure mode. The licensee intends to submit a license amendment in Apr;l 1998 concerning the aodition of the SVCs to the electrical system. The schedule is to have the modification in place prior to plant startup.

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on B. Hopkins, Senior roject Manager Project Directorate 111-3 Division of Reactor Projects lil/IV j Office of Nuclear Reactor Regulation l Docket No. 50-461 Attachments: 1. List of Meeting Participants

2. Meeting Handout cc w/atts: See next page 6

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DISTRIBUTION FOR

SUMMARY

OF MARCH 19,1998, MEETING WITH ILLINOIS POWER COMPANY Hard Cony w/atts Docket File PD 111-3 Reading PUBLIC ,

GGrant, Rlli JHopkins

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Hard Coov w/Att 1 1 OGC )

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E-mail w/Att 1 1 SCollins (SJC1)

FMiraglia (FJM)

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' BBoger EAdensam (EGA1)

RSavio Dross (SLM3)

OChopra JLazevnick JCalvo DThatcher I

Clinton Power Station, Unit 1 Illinois Power Company cc:

John G. Cook lilinois Department of Nuclear Safety Senior Vice President Office of Nuclear Facility Safety Clinton Power Station 1035 Outer Park Drive

' P.O. Box 678 Springfield,IL 62704 i

, Clinton,IL 61727 Joseph V. Sipek .

Larry Wigley Director- Licensing Manager Nuclear Station Clinton Power Station l Engineering Department P.O. Box 678 q Clinton Power Station Mail Code V920 1 P.O. Box 678 Clinton,IL 61727 j Clinton,IL 61727 Resident inspector U.S. Nuclear Regulatory Commission RR#3, Box 229 A Clinton,IL 61727 R. T. Hill Licensing Services Manager General Electric Company 175 Curtner Avenue, M/C 481 San Jose, CA 95125  ;

Regional Administrsstor, Region ill U.S. Nuclear Regulatory Commission 801 Warrenville Road I Lisle, IL 60532-4351 j l

Chairman of DeWitt County clo County Clerk's Office DeWitt County Courthouse Clinton,IL 61727 .

J. W. Blattner Project Manager . I Sargent & Lundy Engineers 55 East Monroe Street Chicago,IL S0603 I

MEETING ATTENDEES NRC AND ILLINOIS POWER COMPANY DISCUSSION OF DEGRADED VOLTAGE MARCH 19,1998 NB.C J. Hopkins J. Calvo 4 O. Chopra J. Lazevnick j D. Thatcher Illinois Power Comoany J. Ray R. Phares J. Sipek ,

T. Elwood ll l

Duke Enaineerina (consultant to Illinois Power Company)

R. Sharpe Attachment 1

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4 Degraded Voltage Project

? at Clinton Power Station i

March 19,1998 f

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IP Representatives:

R. F. Phares Manager-Nuclear Safety and Performance Improvement

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J. V. Sipek Director-Ucensing T. B. Elwood Supervisor-Licensing Operations

- J.L. Ray Project Engineer

, R. Sharpe Duke Engineering and Services j 1

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. _ _ _ __-------- _ ____ u

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i Agenda l

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introduction R. F. Phares i, l 1

Project Update J.L. Ray l I.

Initial USQ Submittal T. B. Elwood l l

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,! e Follow-up Submittals T. B. Elwood r

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Project Schedule / Projected Completion Date J. V. Sipek

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Summer Situation J.L. Ray l -

Summary ,

J. V. Sipek 1

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,l ELMEMES 0

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Project Update l

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c l . Priority Project at CPS 1

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- - Multiple Modification Packages: RAT Tap l

Setting, Regulating Transformers, RAT and ERAT SVCs, ERAT LTC l '

- Construction Activities Begun i

- SVC Design Changes (Relocated Breaker) i

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Completion of SVC and Protection System Testing '

l at ABB -

Ongoing Calculations l

EC.E.EC&GES POWER

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L Initial USQ Submittal

! - Initial submittalin April 1998.

I Will be submitted as a USQ with determination of No Significant Hazards Consideration.

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- Will focus on SVC design and operation, associated )

i protection system (s), and associated FMEA and i PRA.

? .Will show that SVC failure probability coupled with failure of protection systems is acceptably small.

- Will include initial TS Bases and USAR changes. l l

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- Will acknowledge required follow-up submittals.

ILERMES PCMR

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Follow-up Submittal (sD Ongoing calculations take SVC operation into account and will allow for improved margins for required voltages for loads via changes to degraded voltage relay setpoints (Technical Specifications to be changed).

- Calculations use ETAP methodology (versus l previously used ACELMS).

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- Will need to address startup testing (tying SVCs to i busses).

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Project Schedule /

l Projected Completion Date m

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- Initial submittal will refer to projected date of when startup testing will begin.

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2 Project estimated to be completed late i summer /early fall.

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EC.MMCES E8tNJi3R

Summer Situation Projected Offsite Circuit Voltages for RAT and ERAT.

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i (LLtMGES PCeWER

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e. March 24', 1998 -

LICENSEE: lilinois Power Company I

FACILITY: Clinton Power Station

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SUMMARY

OF MARCH 19,1998, MEETING ON DEGRADED VOLTAGE I

On March 19,1998, NRC management and staff met in Rockville, Maryland, with - {

representatives of Illinois Power Company. The purpose of the meeting was to discuss the

. potential fix for the issue of degraded voltage at the Clinton Power Station. A list of the meeting .,

participants is included as Attachment 1, and a copy of the meeting handout is provided 'as 1 Attachment 2.

The licensee stated that due to previously expressed NRC staff interest, they had reviewed the possible failure modes of the static var compensators (SVCs) and had identified a new failure mode. The licensee revised the SVC design to protect against the new failure mode. The licensee intends to submit a license amendment in April 1998 conceming the addition of the SVCs to the electrical system. The schedule is to have the modification in place prior to plant startup.

Original signed by:

Jon B. Hopkins, Senior Project Manager Project Directorate 111-3 Division of Reactor Projects Ill/lV Office of Nuclear Reactor Regulation Docket No. 50-461 Attachments: 1. List of Meeting Participants

2. Meeting Handout cc w/atts: See next page DOCUMENT NAME:: G:\CLINTON\0319.MTS OFFICE PD3-3:PM -- E PD3-3:LA [

NAME- JHopkins M f EBarnhill - f'fl.

DATE D14. 98 JTl 34$98 m OFFICIAL RECORD COPY r .

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