ML20199F990

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Discusses 980114 Meeting W/Utility in Atlanta,Ga.Purpose of Meeting to Allow South Carolina Electric & Gas Co to Make Presentation on VC Summer EDG Issues.Information Handout on Refuel 10,list of Attendees and Presentation Slides Encl
ML20199F990
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 01/21/1998
From: Haag R
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
To: Gabe Taylor
SOUTH CAROLINA ELECTRIC & GAS CO.
References
NUDOCS 9802040187
Download: ML20199F990 (71)
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Text

{{#Wiki_filter:._ c i January 21, 1998 -South Carolina Electric & Gas Company ATTN: Mr. Gary J. Taylor Vice President, Nuclear Operations Virgil C. Summer Nuclear Station P. O. Box 68 Jenkinsville, SC 29065

SUBJECT:

MEETING

SUMMARY

- V. C. SUMMER EMEviENCY DIESEL GENERATOR ISSUES

Dear Mr. Taylor:

This letter refers to the meeting conducted at your request at the NRC Region 11 office in Atlanta on January 14, 1998. The purpose of the meeting was to allow South Carolina Electric &' Gas Company (SCE&G) to make a presentation on V. C. Summer's Emergency Diesel Generator issues. Although not discussed, your staff also provided an information handout on Refuel 10. It is our opinion that this neeting was beneficial and provided a better understanding of the issues and status of the Emergency Diesel Generator. in accordance with 10 CFR 2.790 of the NRC's " Rules of Practice." a copy of this letter and its enclosures will be placed in the NRC Public Document Room. Should you have any question concerning this letter, please let us know. Sincerely. Orig signed by Robert C. Haag Robert C. Haag. Chief Reactor-ProfOcts Branch 5 Division of Reactor Projects -Docket No. 50 395-License No. NPF-12

Enclosures:

1. List of Attendees \\ )( 2. SCE&G Presentation Slides.

3. -Refuel 10 Handout OFFICIAL COPY 0 4 00 GI,)-

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SCE&G 2 cc w/encls: R. J. White Nuclear Coordinator Mail Code 802 S.C. Public Service Authority Virgil C. Summer Nuclear Station P. O. Box 88 Jenkinsville. SC 29065 J. B. Knotts, Jr. Esq. Winston and Strawn 1400 L Street. NW Washington, D. C. 20005 3502 Chairman Fairfield County Council P. O. Box 60 Winnsboro. SC 29180 Virgil R. Autry. Director Radioactive Waste Management Bureau of Solid and Hazardous Waste Management S. C. Department of Health and Environmental Control 2600 Bull Street Columbia. SC 29201 R. M. Fowlkes. Manager Operations (Mail Code 303) South Carolina Electric & Gas Company Virgil C. Summer Nuclear Station P. 0, Box 88 Jenkinsville. SC 29065 April Rice Manager Nuclear Licensing & Operating Experience (Mail Code 830) Virgil C. Summer Nuclear Station P. O. Box 88 Jenkinsville. SC 29065

SCE8G 3 Distribution w/encls: M. Padovan. NRR R. Aiello. RIl P. Fillion. Ril R. Gibbs. Ril D. Jones. Ril L. Garner. Ril M. King. RI! PUBLIC NRC Resident inspector U.S. Nuclear Regulatory Comission Route 1. Box 64 Jenkinsville. SC 29065 I of flB All f &,* AA / stamatunt f([ Lv.h ahnt Pnephins th DAff 1/ h 198 1/ 1./ /98 1/ /98 1/ /98 1/ /98 1/ /98 1/ /98 m ds _m f ut7 no ut m un m un no un no un an Of fIClAt REIINID COPY Det18 TNT RAME*Et\\msetiG14.R M

l LIST OF ATTENDEES I Nuclear Reaulatory Commission L. Reyes, Regional Administrator. Region 11 (RII) J. Johnson. Director. Division of Reactor Projects (DRP) RIl l J. Jaudon. Director. Division Uf Reactor Safety. Ril l M. Padovan. Project Manager. Project Directorate 11-1. Office of Nuclear Reactor Regulation R. Haag Chief. Branch 5. DRP Ril B. Bonser. Senior Resident inspector. V. C. Summer P. Hopkins Project Engineer. Brench 5. DRP. Ril H. King Project Engineer. Branch 5. DRP Ril South Carolina Electric and Gas Comoany S. Byrne. Plant Manager B. Williams, Gener91 Manager. Engineering B. Weselus. Manager. System Engineering H. Fowlkes. Operations Manager R. Slone. System Engineer D. Gatlin Engineering Analyst A. Rice. Manager. Licensing = .e a

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rticipants j .:. Steve Byrrie Plan ~: Manager .:. Bruce Wi iams Gen. Mgr. Engineering .:. Bob Waselus Mgr. Sys~:. Engineering i l .:. Mike Fowlkes Operations Mgr. .:. Richard Slone System Engineer j .:. Dan Gatlin Engineering Analyst +:+ Aoril Rice Mg r. Licensing j

genda .:. Introcuction and Overview .:. JG Mont1ly Operability Testing .:. DG Equiament Overview .:. His~:ory o" DG Operation .:. Actions Com aleted .:. DG Operability Retesting .:. Future Plans + Summary j

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O erability Test .:. Parallel to Bus and Run Loaded for l One Hour .:. Reduce Load To.50 kW and Open EDG Feeder Breaker to Bus .:. Verify Steady State - No Load Voltage .:. Stop and Align EDG for Automatic l Start l

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i iesel GeneratorHistory ectrical Governor (EGA) Initial Criticality 10/82 11/12 Day 1 1/81 17/84 8/85 1/86 97 12/7 17/4 17/17 1/98 ', "B" DG i j j "A" DG 1 1 - _ _ _ _ g,,,,,,g _ _ _ _ _ _ _ _ _ _ _ _ _ -,,,,(,,,,),n,,,,,,,,,p _ _ _ _ 9 _ _ _ i i i i i i i i i 1 ~ "A" DG i i "A'i DG i 2 1 t 3 i. i

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i. i i p____g______;______________p___m,,m,,,,,,;,,,,,,,,,,,,,,,,,,___. ~ i "B" DG i i i i i i 4 1 = 1425251 Installed i 2 = 1425252 Warehouse At Refurb 3 = 1790987 4 = 1790988 (1) - Refurb Failed Benchtest i i

iesel GeneratorHistory anical Governor (EG 'B') i i t Initial Criticality 10/82 Dav i 1/81 2/81 12/85 4/86 11/97 1/98 i i i i i i i l "A'! DG i __-.i i i "A" DG 1 i ............., e _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ -......... l ~ i i i l ^ ! " A' DGi i i i 2 i---.- l i i i i i i i i i i i l _ _ q _ _ _ _ ;_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ;_ _ _ _ A " D G 3 "B'i DG i i i i i 4 .i i i i. i i I Installed 1 = 1380933 l l I 2 = 1790986 Warehouse 3 = 1790985 At Refurb m...--.-,,--, 4 = 1391786 c

A tions Completed + CT / PT Evaluation + Evaluation of Ambient Temperature + Lube Oil Consumption l + Outage Scope Review + Viscosity and Synthetic Oil Evaluation

A ions Completed .:. Fuel Oil Delivery System .:. Voltage Regulator Evaluation l .:. Independent Design Engineering Determination of Troubleshooting .:. Design Engineering Review of Set-up Procedures /k

smw l l A ions Completed .:. Vendor Shop Visits l .:. OE Review By INPO .:. State of the Art Test Equipment .:. Bench Tests .:. No Load Frequency Tolerance .:. PM Scope Review for Normal and Accelerated Testing L

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perability Retesting RF10 .:. Three Maintenance Runs .:. Monthly Operability Test .:. Twenty-Four Hour Refueling Surveillance Test .:. Load Rejection Test .:. Loss of Offsite Power Test .:. Integrated Safeguards Test

perability Retesting or First Three Events Maintenance Runs Monthly Operability Test Load Rejection Test (Modified to Check Loading Stability)

perability Retesting ForFourth Event .:. Maintenance Runs .:. Pre-Operability Tests Per Monthly Surveillance Procedure .:. Monthly Operability Test .:. Load Rejection Test .:. Loss of Offsite Power Test .:. Semi-Annual Cold Start-Fast Load Test

ummary ofRetesting Activities .:. Maintenance Runs l .:. Monthly Surveillance Tests .:. Other Surveillance Testing Per Technical Specifications _W

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S mary i .:. Questioned Similarity and Number of Events .:. Continue to Evaluate Parts Issues Vendors Tech Spec Methodologies Governor Upgrades .:. Established Operability

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I -? l rts..ctpants ~ i 9!P.- + teve Byme Plant Manager f ~~ v + Bruce Williams Gen. Mgr. Engineering l + Bob Waselus Mgr. Syst. Engineenno e> f 6 + Mike Fowlkes operations Mgr. 1 l + Richard Sione System Engineer ~ + Dan Gatlin Engineering Analyst ..h + April Rice Mgr. ucensing i I l l genda i I i + introductionandOverview ) + DG MonthlyOperabilityTesting ,,A,, l + DGEquipmentOverview Diesel GeneratorIssues + History of DG Operation + ActionsCompleted l + DG Operability Retesting l + Future Plans + Summary 1 i 1 1 1 " HCs hk., w . ra,ia i ~3 ~ $ m, g egw p ul + Upgrade to next generation or dig!t.al? ) c 'D9 j + Objectiveoverview i "j475 2 + Not each fa%re counted under i GL 94-01 (L Qj - Possible T.S. chenge .e - wSrdshirmillt 4 4 e ..-,e.- ,.~,e

it3tS OHthly Operability Test Description + Failures were distinotty detteront - Eisetrimot oevemer (eGA) M (not venid test seisme)

  • easok *er' Govemer (sos)

( enh encaisted miended) Mike Fowikes i + Da ressesmty atm oood + No stori tellures + Retesting enore comprehensive than most + Conservative deelslon to S/D O rability Test d rability Test + Perform Emergency Start of EDG + Parallelto Bus and Run Loaded for One Hour + Record Time to Reach Speed, + Reduce Load To 50 kW and Open EDG Voltage, and Frequency Feeder Breaker to Bus + Perform Test Start of EDG + Verffy Steady State No Lead Voltage + Run at No Load for Stabilization + Stop and Align EDG for Automatic Start Qiesel Generator verview of Operation of the Vquipment Overview '"'emor Contw! System + Electricai Govemor (EGA) Operation Bob Waselus + 1echanical"G vemor(EGB) Operation

1 1 ) i, 1 i l l Overview of Operation of the Overview of Operation of the Govemor Contw1 Systern Govemor Control Systern f I i i i i l Overview of Operation of the Overview of Operation of the l n:cGoremor ControlSygternrm Governor Control Systern e - a v :.W - i [c,' , ;:EGA

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ions Completed ions Cornpleted + Fuel Oil Delivery System + Vendor Shop Visits + Vohage Regulator Evaluation + OE Review By INPO + State of the Art Test Equipment + Indepamdent Design Engineering + Bench Tests Determination of Troubleshooting + No Load Frequency Tolerance + Design Engineering Review of + PM Revlw W h l Set.up Procedures and Accelerated Testing OperabilityRetesting Perabi etesting + Three Maintenance Runs + Monthly Operability Test + Twenty.Four Hour Refueling Mike Fowlkes Surveiiiance Test + Load Rejection Test = - + Loss of OhsNe Power Test + integrated Safeguards Test

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+ ! Modified to Check Loading NWm Ted + htability) 1 + SemkAnnualCold Su:rt Fee LoadTest i ummary of Retesting ActiviHes yurePlans + Maintenance Nns + Monthly SurvelMnce Tests Bruce Williams L + other Survelliance Testing Per Technical Specifica?lons i nnedActivities Su mary i. + Expert Panel independent - Assessment 1/19 + Part 21 Evahmtion 2/8 + Analog Governor Upgrade Evaluation Stepc Byrne Speed Control System Overhaul - + Evaluation Periodic Diagnostics + + Shelf Life Assessment ,m, ,--m-,, _ -, ee--- --m,- ,.m_--,_a ,-rw n,,,-w. -v m,- w- ,w--

$3 Mittrart/ IINND + OuestW Similarhy and Number of Everits + MR to Establish Confidence Over Time + Mas to EvMe ~ " " " , History Shows DGs Very - vendsee Reliable . Teen spec hischedologies - Devemerhvede* + Estabitshed Oprobiltty ,.,.-vv v'"

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h e Snubber Removal and Inspection e Inspections of'C' Steam Generator e Preventative & Corrective Maintenance e Outage Imp.rovement Modifications - CRDM Ring Duct - Fuel Handling Machine Upgrade - Thermo-Lag Elimination

E i 0 (Ib) to Al A3 DR l/) 5 O .a 0, D 8 a r w> tr 4 0 M oo b 4 .o

Snubb2TS (CDWi) + Problems Found - Increased Drag on Snubber Reduction Components l - Evidence of Fretting Corrosion - Evidence of Transients c

  • RHR
  • Blowdown
  • Feedwater
  • Pressurizer Spray

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+~~ CONTJRNETRR TOHR c' rTrr ric c>_r2rr._frr<rI;rta 7 R_c)r e 1_ r. + Cleaning Methodology - Shot Gun Blast - Standard Lancing + Corrective Action - Re-roll all tubes in Water Box 1

RE 'l O ENEANCF:MFlNTS + Teamwork and Communication + Use of OPS Windows Managers + Manageable Plant Modification Scope + Pre-Outage Task Reviews + Resource Sharing (SBU and SCE&G)

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