ML20213C957

Responds to IE Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. Final Response Will Be Submitted within 60 Days of Completion of Valve Operator Switch Verification Program

ML20213C957
Person / Time
Site:	Vogtle
Issue date:	08/28/1986
From:	Conway R GEORGIA POWER CO.
To:	Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
GN-1065, IEB-85-003, IEB-85-3, NUDOCS 8611100369
Download: ML20213C957 (11)

Text

Georgia Power Cornpany hh

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333 Piedmont Avenue Attanta, Georgia 30308 OC D _I Te;ephone 404 526 6724 Ma., ling Address.

Post Of' ice Box 4545 Atlanta Georgia 30302 g gp e Att : 34 R.E.Conway the southem ekctrc system Senior Vice President August 28, 1986 United States Nuclear Regulatory Commission

Reference:

Region II RII: JNG:

Suite 2900 50-424 101 Marietta Street, Northwest 50-425 Atlanta, Georgia 30323 File:

X7BC24 Log:

GN-1065 Attention: Mr. J. Nelson Grace The attached information is submitted further to our letter of flay 13, 1986 (File: X7BC24, Log: GN-905), and completes Georgia Power Company's initial response to I&E Bulletin 85-03, " Motor-0perated Valve Common Mode Failures During Plant. Transients Due To Improper Switch Settings."

Georgia Power Company wil1~ submit a final response as required by the Bulletin within 60 days of completion of the valve operator switch verification program for each unit of the Vogtle Electric Generating Plant.

This response contains no proprietary information and may be placed in the NRC Public Document Room.

Yours truly, l'

R. E. Conway j

REF/ REC /tdm Attachment css lk. cod o

8611100369 860828

)l5 PDR ADOCK 05000424 l

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Page Two R. E. Conway states that he is the Senior Vice President, Project Director of the Vogtle Project and is authorized to exccute this oath on behalf of Georgia Power Company and that to the best of his knowledge and belief the facts set-forth in this letter are true.

GPC:

67Y

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Y Sworn to and subscribed before me this 8 of August, 1986.

hd d h/),

=M MyCommissionexpired6/16/N xc:

U. S. Nuclear Regulatory Commission Document Control Desk Washington, D. C.

20555 J. H. Miller R. A. Thomas L. T. Gucwa J. P. O'Reilly D. R. Altman C. W. Hayes G. F. Head P. R. Bemis G. A. McCarley D. O. Foster J. A.. Bailey D. S. Read J. T. Beckham

0. Batum Sr. Resident (NRC)

R. H. Pinson G. Bockhold C. S. McCall (OPC)

P. D. Rice C. E. Belflower J.E. Joiner (TSLA)

8. M. Guthrie J. F. D' Amico D. C. Teper (GANE)

D. E. Dutton E. D. Groover NORMS

4 RESPONSE TO IE8 85-03

SUBJECT:

USNRC IE Bulletin 85-03, " Motor-0perated Valve Common Mode Failures During Plant Transients Due To Improper Switch F

Settings"

REFERENCES:

1) GN-905 dated May 13, 1986 2) 10CFR50.55 a(g) " Inservice Inspection Requirements" INTRODUCTION:

The following information is provided in response to IEB 85-03 Action Item (e), parts 1 and 2, pursuant to the provisions and commitments of our letter dated May 13, 1986 for Vogtle Electric Generating Plant Units 1 and 2.

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PURPOSE:

The purpose of this response is to provide information relative to program development and implementation plans for Plant

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Vogtle commensurate with the requirements of IEB 85-03.

1 DISCUSSION:

Past performance / industry related experience clearly reflect the need for enhanced maintenance and setpoint controls for l

motor-operated valves. Consistent with Plant Vogtle's evolving motor-operated valve reliability program, based on lessons learned and experience gained, programmatic aspects associated i

with setpoint requirements have been evaluated per IEB 85-03.

l

RESPONSE

IEB.85-03 directly targets motor-operated' valves in high pressure coolant injection / core spray and emergency feedwater l

systems (RCIC for BWR's), which are required to be tested i

for operational readiness in accordance with 10CFR50.55 a(g).

Corresponding motor-operated valve selections have been made l

as deemed appropriate consistent wita the "Four Loop Westinghouse l

Pres:;urized Water Reactor Nuclear Steam Supply System" and i

associated design aspects for Plant 7ngtle, with respect to the high pressure coolant systems identified in the bulletin.

In accordance with 10CFR50.55 a(g) and consistent with IEB 85-03, valve selections specifically have been made on the

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basis of applicable " active" in-service test program motor-l i

operated valves'in appropriate portions of the Safety Injection, Chemical and Volume Control, and Auxiliary Feedwater Systems.

Enhanced programmatic aspects associated with IEB 85-03 response l

requirements for these valves are represented per the following items:

' Valve Design Information

'Setpoint Requirements l

' Operability Testing

' Procedures l

• Initial Response / Schedule

' Test Reports L

e

Response To IEB 85-03 Page Two ITEM #1:

VALVE DESIGN INFORMATION (Ref. IER 85-03 Action Item "a")

Valve, valve operator, and maximum expected differential pressure information is provided in Table 1 for selected valves in the appropriate portions of the Safety Injection, Chemical and Volume Control, and Auxiliary Feedwater Systems.

Valve operator nameplate information for Table 1 was collected by means of equipment walkdowns/ field verification.

(Reference Table 1)

ITEM #2:

SETPOINT REQUIREIENTS (Ref. IE8 85-03 Action Item "b")

Setpoint review and revision requirements / methods have been evaluated with interim setpoint requirements established within the maintenance program for motor-operated valves at Plant Vogtle. Specific plant design aspects, relative to potential consequen:es associated with setpoint change implementation, were also considered as a part of the Plant Vogtle program evaluations. As a result of these evaluation efforts, appropriate wiring changes have been implemented for Unit 1 to enhance limitorque operator control switch function adjustment capabilities, with similar changes planned for Unit 2.

With the exception of butterfly valves, dampers, and some special design change application requirement valves, wholesale separation of open bypass rotor functions are being enacted to allow open torque switch bypass adjustments without impacting other control switch functions. These changes provide an independent means of setpoint adjustment, eliminating the need for excessive compensatory actions such as raising torque or torque bypass switch settings significantly above that required.

Adjustments in setpoint requirements will be made as warranted per test results obtained in Item #3.

ITEM #3:

OPERABILITY TESTING (Ref. IE8 85-03 Action Itse "c")

The Plant Vogtle motor-operated valve reliability program has implemented initial program testing by using)a " Motor-Operated Valve Aualysis and Test System" (M0 VATS to provide demonstrated operability of valves, to the extent possible, to verify the switch setpoint criteria established per Item 2 above such that these valves will perfonn their design function when exposed to maximum differential pressure con-ditions.

Initial testing includes evaluation of static sig-natures for valve degradation, incorrect adjustments, and other abnormalities in motor-operated valves. Additional demonstrated operability testing will include evaluation of dynamic signatures for optimizing setpoint criteria, such that appropriate protection margins may be adjusted to ensure valve operability when subjected to

Response To IEB 85-03 Page Three maximum differential pressure conditions, without unduely jeopardizing valve protection against catastrophic failure during normal plant operations.

In addition to verifying valve operability, dynamic test results also provide a tangible means of re-evaluating setpoint criteria as established in Item 2 above, thereby formulating a system of checks and balances within the valve reliability program.

ITEM #4:

PROCEDURES (Ref. IEB 85-03 Action Item "d")

Procedural requirements for program implementation are being integrated into existing Plant Vogtle procedures to prevent duplication of program effort and to assure maximum benefit potential from lessons learned.

Current procedural actions include the generation of a MOVATS test procedure and extensive motor-operated valve maintenance and checkout / setup procedure upgrades to provide a higher degree of detail consistent with valve performance / switch setting requirements. Additional procedural and training enhancements will be enacted as deemed cppropriate pursuant to the test results and findings per Items 2 and 3 above.

ITEM #5:

INITITAL RESPONSE / SCHEDULE (Ref. IEB 85-03 Action Item "e")

This response meets IEB 85-03, Action Item "e", initial response requirements.

A collateral completion schedule has been selected to facilitate i

ongoing program adjustments commensurate with the lessons i

learned and experience gained during IEB 85-03 test program implementation at Plant Vogtle.

In view of system availability i

and required plant configurations to support dynamic testing under simulated accident conditions, the scheduled parallel completion of programatic goals and test phase requirements is forecasted for Unit 1 on or before the commencement date of commercial operation.

Unit 2 programmatic goals and test phase requirements, pending system completion / operational availability to support dynamic testing, are forecasted for completion prior to the date of Unit 2 operating license issuance in accordance with the provisions and requirements of IEB 85-03 Action Item "e",

part 2.

ITEM #6:

TEST REPORTS (Ref. IEB 85-03 Action Item "f")

Appropriate written reports of test results will be submitted within 60 days after program completions to the governing Regional Administrator pursuant to the requirements of IEB 85-03.

Response To IEB 85-03 Page Four Any changes in program form or content within this response as a result of program development will be amended as applicable in the final test reports.

O E

Tabi2 1 Page: 1 August 27, 1906 VOGTLE ELECTRIO GENERATING PLANT LMITS 1 & 2 VALVE VALVE OPERATOR l

ANSI DESIGN DESIGN TYPE /

MeaFACTUKR/

RATINE PRESS.

(PSID)

MAteJFACTURER/

MOTOR OPERATOR TAG DemeER SIN

• Dannen (the)

(psis)

C/O M8 MCI (RPM)

(RPM)

VALVE F tNCTION

• ~

HV-3OO9 GATE ANCHOR /DARLINE 900s 1185 1185 LIMITORQLE 1900 63.3 STEAM GEN TO AFPT 4IN.

E9001-12 1185 S99-00 STEAM ISOLATION VALVE 1

HV-3019 GATE ANCHOR /DMLINE 9000 1185 1185 LIMITORQUE 1900 63.3 STEAM GEN TO AFPT 4IN.

E9001-12 1185 Sf3-00 SIEAM ISOLATION VALVE 1

HV-5106 GATE ANCHOR /DMLINE 9000 1185 1185 LIMITORQUE 1900 82.6 AUX. FEEDWATER PUNP 4IN.

E9001-59 1185 Sre-OO TURSINE ISOLATION VALVE HV-5113 SFLY FISER 1500 150 40 LIMITORQUE 1900 57.6 CONDENSATE STORAE IOIN.

9280 40 Ste-DOO TANK V4002 TO PUMP i

P4001

~ 50 40 LIMITORQUE w

57.6 CONDENSATE STORAGE HV-5118 SFLY FISER 1908 1

SIN.

9200 40 SDS-000 TANK V4002 iO PUMP P4002 HV-5119 SFLY FISER 1500 150 40 LIMITORQUE 3600 57.6 CODGENSAVE SItemE l

SIN.

9290 40 S09-000 TANK V4002 10 PUNP I

P4003 HV-5120 GLOSE FISER 9008 1800 1715 LIMITOROUE 1900 76.6 AUXILI ARY FEEDWATER

{

4IN.

SS-120 1715

$p9-00 PUMP P4001 DISCHARGE l

HV-5122 GLOSE FISE R 9008 1900 1715 LIMITOROLE 1900 76.6 TUR8INE DRIVEN AFWP 4IN.

SS-120 1715 SS-DO DISCHARE TO ICADER l

HV-5125 GLOSE FISER 900s 1800 1715 LIMITor.QUE 1900 76.6 TUR8INE DRIVEN AFWP 4IN.

SS-120 1715 SS-00 DISCHARE 1O HEADER HV-5127 GLOSE FISE R 900s 1800 1715 LIMITORQUE 1900 76.6 TURSINE DRIVEN AFWP l

4IM.

SS-120 1715 SS-00 DISCHARE TO HEADER l

HV-5132 GLOSE FISE R 9006 1800 1645 LIMITOROUE 3400 78.0 AUXILIARY FEEDWATER 4IN.

SS-120 1645 SS-DO PUMP DISCHARE j

HV-5134 GLOSE FISE R 900s 1800 1645 LIMITORQUE 3400 78.0 AUXILI ARY FEEDWATER 4IN.

SS-120 1645 SS-DO PUMP DISCHARGE l

i

Tabb 1 Page: 2 August 27 1906

+

VOGTLE ELECTRIO GENERATING PLANT

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UNITS 1 & 2 VALVE VALVE OPEks IOR ANSI DESIGN DESIGN TYPE /

MAMFACTINER/

RATING PRESS.

(PSID)

MANLFACTtNER/

MOTOR OPERATOR TAG pameER SI7E

• pannra (ths)

(PSIC)

C/O pnnri (RPM)

(RPM)

VALVE FUNCTION HV-5137 GLOSE FISE R 9008 1800 1645 LIMITORQUE '

3400 78.0 AUXILIARY FEEDWATER 4IN.

SS-120 1645 SS-DO PtmP DISQtARE HV-5139 GLOSE FISE R 9004 1800 1645 LIMITORQUE 3400 78.0 AUXILIARY FFEDWATER 4IN.

SS-120 1645 SS-DO PUMP DISOMRGE HV-C104 GLOSE VELAN 1500s 2500 2750 LIMITORQtE 1700 16.7 BORIC ACID TANK TO 2IN.

2TN7BFN 2750 Spe-DO QiARGING PUNP HV-C105 GATE ESTINGpns M 15006 2500 2750 LIMITORQUE 3400 82.9 04ARGING PtmP TO 3IN.

Jet 7EFN 2750 SS-00 RCS ISOLATION HV-C106 GATE NESTINGHOUSE 15000 2500 2750 LIMITORQUE 3400 82.9 Q4ARGING PtmP TO 3IN.

39678FM 2750 SS-00 RCS ISOLATION IN-C110 GLOSE VELAN 15000 2500 2750 LIMITORQtE 1700 16.78 QMRGING PUNP TO 2IN.

2TN7EFN 2750 Spe-OO HINIFLOW ISOLATION HV-C111A GLOSE VELAN 15005 2500 2750 LIMITORQUE 1700 18.1 OtARGING PtmP 10 2IN.

2TN7EFN 2750 Sf3-00 HIMIFLOW ISOLAIION HV-C1118 GLOSE VELAN 1500e 2500 2750 LIMITORQUE 1700 16.78 04ARGING PUNP TO 2IN.

2TM7EFN 2750 Spe-OO MINIFLOW ISOLATION HV-C146 GATE ESTINGHOUSE 15000 2500 500 LIMITORQtE 1700 46.6 OIARGING 10 RCS 3IN.

3 9tBBFpet 2750 Spe-OOO ISOLATION HV-C147 GATE ESTINGHns M 15005 2500 500 LIMITOROUE 1700 46.4 OlARGING TO RCS 3IN.

3GMBBFpet 2750 Spe-DOO ISOLATION HV-8438 GATE ESTINGHOUSE 15004 2500 2750 LIMITORQUE 1700 44.0 OlARGING PUMP B 4IN.

4GM78FN O

SS-00 DISQtARGE HV-u471A GATE WESTINGHOUSE 150s 200 200 LIMITOROUE 3400 93.2 OlARGING PUNP A 6IN.

6GM72FB 200 Spe-OOO SUCTION

Tabb 1 Page: 3 August 27, 1906 VOGTLE ELECTRIC GENEEHATING PWT LMITS 1 & 2 VALVE VALVE OPERATOR ANSI DESIEM DESIGN TYPE /

MM&FACTURER/

RATING PRESS.

(PSID)

MM&FACTUKR/

MOTO8t OPERATOR TAG DamehER SI7E

• W

( ha)

(PSIC)

C/O A

(RPM)

(RPM)

VALVE FUNCTION HV-94718 GATE ESTIN 1500 200 200 LIMITnmaa r 3400 93.2 CHARGING PUMP B 6IN.

6SE72FS 200 Sf3-000 SUCTION HV-9485A GATE ESTIMEMouK 15000 2500 100 LIMITnnear 1700 44 CHARGING PUMP A l

41N.

4WE7EN 2750 M-DO DISCHARGE HV-8405S GATE ESTIMEMouSE 15000 2500 100 LIMITORQUE 1700 44 CHARGING PUMP B 4IN.

4GE7EM 2750 SS-OO DISCHARGE l

HV-sa'insaA diLOSE VELAN 15008 25 5) 2750 LIMITORGE 1700 26.90 CHARGING PtMP A 2IN.

2TM7EFM 2750 Sr3-00 RECIRC TO RWST (CHRG. PMP. MINFL W) j HV-saania GLOSE VELAN 15000 2500 2750 LIMITORQUE 1700 26.90 CHARGING PtMP B 2IN.

2TM7EFM 2750 S93-00 RECIRC TO RWST (CHRG. PHP. MINFLW) i HV-OOO3A GATE ESTINGpns e'ir 15000 2500 0

LIMITORGE 1700 41.46 BORON INJECTION TANK 4IM.

m 2750 SS-00 DISCHARGE ISOLATION VALVE HV-90018 GATE WESTINGhnan'iF 15006 2500 0

LIMITORQUE 1700 41.46 BORON INJECTION TANK I

4IM.

4 GOWN 2750 SS-00 DISCHARGE ISOLATIUN VALVE HV-OOO2A GATE ESTINGpna n'ar 15006 2500 0

LIMITORQUE 1700 41.46 RCS HOILEG LOOPS i

4IN.

49pIFN 2750 SS-00 154 HEADER 1 SOLATION 1

1 i

HV-sasarr>S GATE ESTIDEiHOUSE 15006 2500 0

LIMITORGE 1700 44 RCS HOTLEG LOOPS 4IN.

m 2750 38-00 2&3 HEADER BYPASS

)

HV-BOO 6 GATE ESTINGHOUSE 1500 200 200 LIMITOROUE 1700 49.05 SAFETY INJECTION i

SIN.

OEM72FS 200 SS-00 PUMP SUCTION EADER ISOLATION I

HV-OOO7A GATE ESTINGHoubE 1508 200 200 LIMITORQUE 3400 93.15 SAFETY INJfCIION

~

6IN.

6GM72FS 200 SPS-000 PUMP SUCTIUN HEA[ER i

l HV-uGO78 GATE WESTINGHOUSE 150s 200 200 LIMITORQUE 3400 93.25 SAfTV INJECIILW 6IN.

6GM72f8 200 SPS-000 PUMP SUCiION HEADER 1

Tabl2 1 VOGTLE ELECTRIO G ENEERATING PLANT

~

LMITS 1 & 2 VALVE VALVE OPERATOR ANSI DESIGN DESIGN TYPE /

MADAFACTuiER/

RATING PESS.

(PSID)

MANLFACTUKR/

MOTOR OPERATOR TAG M R SI7E

• Danmen (Ibs)

(psrs)

C/O W1 (RPM)

(RPM)

VALVE FLNCTION HV-0813 GLOSE VELAN 15008 2500 2750 LIMITOROLE 1700 15.6 SAFETY INJECTION

)

2IN.

2TM7EM 2750 Ste-DOO MINIFLOW HEADER ISOLATION HV-0814 GLOSE VELAN 15006 2500 2750 LIMITORQUE 1700 16.78 SAFETY INJECTION 1.5IN 1.5TM7F M 2750 Sfe-OO MINIFLOW ISOLATION j

HV-8821A GATE ESTINGHOUSE 900s 1750 1500 LIMITORouE 1700 34.69 SAFETY INJECIION PHP 4IN.

4EM77FH 1500 Ste-DO "A" RCS LOOP IEADER I

ISOLATION HV-98218 GATE ESTIediHOUSE 9008 1750 1500 LIMITOROLE 1700 34.69 SAFETY INJE CTILW PHP 4IN.

4GM77FH 1500 See-00 "8

• L OOP HC AOL R ISOLATION 1

HV-0835 GATE ESTINGHOUSE 1500s 2500 0

LIMITORQUE 1700 41.46 SAFETY INJECT ION SYS 4IN.

4GM7F M 2750 SS-DO RCS COLDLEG INLET ISOLATION VALVE 4

1 HV-8920 GLOSE VELAN 15006 2500 2750 LIMITORQLE 1700 16.78 SAFETY INJECTION PHP 1.5IN 1.5TM7BFN 2750 See-OO "B" MINIF' OW ISO.

l VALVE l

HV-8923A GATE ESTINGHOUSE 1500 200 200 LIMITOROLE 3400 93.15 SAFETY INJECTION PHP l

6IN.

6EM72Fh 200 Ste-OOO INLET TRAIN A l

l l

HV-09238 GATE ESTINGHOUSE 1508 200 200 LIMITORQUE 3400 93.15 SAFETY INJECTION PMP 6IN.

6GM72FB 200 Sfe-000 INLET TRAIN 8 l

HV-8924 GATE ESTINGm M 1508 200 200 LIMITOROUE 3400 93.15 CHARGING PUMP TO 6IN.

6GM72FB 200 See-OOO SAFETY INJECTION PHP CROSS IIE LV-01128 GATE ESTINGHns M 150s 200 100 LIMITORQUE 1700 46.6 VtXUME CONTRtM. TANK j

4IN.

4GM7MB 200 Ste-OOO OUTLET ISOL ATION LV-0112C GATE ESTINGHOUSE 1508 200 100 LIMITOROLE 1700 46.o VOLUME CONIROL TANK 4IM.

4GM72FS 200 See-000 OUILET ISOLATION l

t LV-OI!2D GATE WESTINGHOUSE 1508 200 200 LIMITORQUE 1700 49.05 RffIELING WAILR SissR 81N.

OGM72FB 200 See-DO AGE TANK TO CHARGING i

PtMP l

I

f Tabla 1 Page: 5 August 27, 1966 VOGTLE ELEECTRIO GENERATING PLANT ID4ITS 1 & 2 vnw vnvr OerRAToR ANSI DESIGN DESIGN TYPE /

NA8EFACTUKR/

RATING PRESS.

(PSID)

NANLFACTURER/

MOTOR OPERATOR TAG Dametra s12E

==1 (the)

(PSIG)

C/O WR (RPM)

(RPM)

VALVE FUNCTION LV-C112E GATE ESTIN 1500 400 200 LIMITORQtE 1700 49.85 REFUELING WATER STOR SIN.

99672FB 200 303 -00 AGE TANK TO CHARGING l

PUMP PV-15129 GLOSE GIfrEL 9000 1500 1185 LIMITOROLE 1900 56.72 TERRY TURBINE TRIP 4IN.

1185 S99-000 AND THROTTLE VALVE

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• APPLICABLE E-SPEC K SI M ATI E S IIME aa FEDVIBED FOR ESTIsumannunr SipFLIED tiiLVES.

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