ML20199F990
| ML20199F990 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| 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) | |
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,)- roma mme, 8Ill.Il!I!I.195 P PDR . dlf -
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 _ _ = Enclosure 1
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.:. Bob Waselus Mgr. Sys~:. Engineering l .:. Mike Fowlkes Operations Mgr. .:. Richard Slone System Engineer .:. 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
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+ Failures were distinctly different Electrical Governor {EGA) #1 ID relay 'not valid test failure)
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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
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iesel GeneratorHistory anical Governor (EG 'B') 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 ; i 1 ~
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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
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smw l l A ions Completed l .:. Vendor Shop Visits
.:. OE Review By INPO .:. State of the Art Test Equipment !
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.:. 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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.:. Questioned Similarity and Number of Events
.:. Continue to Evaluate Parts Issues Vendors Tech Spec Methodologies Governor Upgrades .:. Established Operability
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+ Bruce Williams Gen. Mgr. Engineering l e> "- .
* :- + Bob Waselus Mgr. Syst. Engineenno
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I l l genda i I i + introductionandOverview ) + DG MonthlyOperabilityTesting ,,A ,,
+ DGEquipmentOverview l Diesel GeneratorIssues ! + History of DG Operation
! + ActionsCompleted l + DG Operability Retesting l + Future Plans , + Summary 1 i 1 1 1
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it3tS OHthly Operability , + Failures were distinotty detteront Test Description ..
- Eisetrimot oevemer (eGA) M (not venid test seisme)
*easok *er' Govemer (sos)
( enh encaisted miended) i + Da ressesmty atm oood Mike Fowikes
+ 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 verview of Operation of the Qiesel Generator '"'emor Contw! System Vquipment Overview
+ 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 e ControlSygternrm Governor Control Systern i .. - - a v : .W - - ;; t . . l ,i , ;:EGA Block Diagram MW)
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+ CT / PT Evaluation g.. i im ! u. .w. in v i a- ue
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+ Outage Soope Review
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- IMutsA A 3, tag d a l**
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 Determination of Troubleshooting + Bench Tests
+ No Load Frequency Tolerance
+ Design Engineering Review of Set.up Procedures + PM Revlw W h l 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
1 \ 7 1 i 4%perabilityRetesting perability Retesting VorFirst Three Events ForFourth Event '
+ Maintenance Runs 4
. uMot a.o.nons + pro opereMinyTest.P.r Monthly survem noeprocedure ,
1 + Monthly operabilNy Test
+ MonthlyOperabilityTest -
- Load Rejection Test + Load Me)ectionTest
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+ SemkAnnualCold Su:rt Fee LoadTest -
i ummary of Retesting ActiviHes yurePlans '
+ Maintenance Nns
+ Monthly SurvelMnce Tests
+ other Survelliance Testing Per Bruce Williams L 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
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+ 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
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V.C. SUMMER OUTAGE HISTORY 120- 8 104 100-l 84 1 ! D 80-l a 61 59 i y 60- ' s 39.5 40 O . 1984 1985 1987 1988 1990 1991 1993 1994 1996 1997 Year l I
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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 (I b) to Al A3 D R l/) 5 O 0, .a D 8 a r w> tr 4 0 % M o o b 4
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Snubb2TS (CDWi)
+ Problems Found
- Increased Drag on Snubber Reduction Components l
- Evidence of Fretting Corrosion c
- Evidence of Transients
*RHR
- Blowdown
- Feedwater Pressurizer Spray
' l !!' l!jl; 1j
_ e b _ t o s r e _ b - b s u s - S n e c f o s o r p H # n u s d e i e s n a d o e R r c e d a i t a n r l u i g a y e s v l t ) D e e n 1 e r u g a 1 r c (4 e l i n i f i n d e WF 4 9 a i o g g t s 4 2 n i S t e - O
+ +
i
CONTJRNETRR TOHR
+~~ c' rTrr ric c>_r2rr._frr<rI;rta e 1_ r. 7 R_c)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)
- jll e
g g t a n i u d o n f e t a a s s Y s g- e R d, nu o s h o l s o i W 0 g a f oyt ri V d eli O e bb L t c mia S u ul e d n n o a t/r n c de n o l em v p i oi t t a su eq S Re
+ +
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