ML20148D526

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Summary of 880315 Meeting W/Util Re Remaining Info Needs Associated W/Util Proposed Tech Spec to Change Logic Sys Functional Testing at Facility.Attendance Roster & Slides Presented Encl
ML20148D526
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 03/17/1988
From: Rooney V
Office of Nuclear Reactor Regulation
To:
Office of Nuclear Reactor Regulation
References
NUDOCS 8803240073
Download: ML20148D526 (72)
v • d • e


Text

./

March 17, 1988 M

4 Docket No. 50-271 LICENSEE: Vemont Yankee Nuclear Power Corporation (VYNPC)

FACILITY:

Vermont (ankee Nuclear Power Station

SUBJECT:

MEETING

SUMMARY

On Tuesday, March 15 at 9:30 a.m., the staff met with representatives of VYNPC to discuss remaining infonnational needs associated with VYNPC's proposed Technical Specification to change logic system functional testing at the Vermont Yankee plant. At 2:00 p.m. on March 15, the NRC staff met with representatives of the State of Vermont to answer cuestions pertaining to the same proposed Technical Specification change.

VYNPC representatives were also present in the afternoon meeting, and voluntarily contributed information in response to certain questions raised by the State of Vermont.

A copy of the VYNPC slides that were presented and an attendance roster for both of these meetings are enclosed.

Original signed by:

Vernon L. Rooney, Senior Project Manager Project Directorate I-3 Division of Reactor Projects I/II

Enclosures:

As stated cc: See next page

  • See previous concurrence 0FC : PDI-3
DIR/PDI-3
0GC t

NAME :oVRooney:ck :*RWessman DATE :3/ /88

3/ /83
3/ /88 OFFICIAL RECORD COPY l

32 ck 1.

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(4 March 17,1988 Docket No. 50-?71 LICENSEE:

Vermont Yankee Nuclear Power Corporation (VYNPC)

FACILITY:

Vernont Yankee Nuclear Power Station

SUBJECT:

MEETING

SUMMARY

On Tuesday, March 15 at 9:30 a.m.,

the staff met with representatives of VYNPC to discuss remaining informational needs associated with VYNPC's proposed Technical' Specification to change logic system functional testing t the Vermont Yankee plant.

At 2:00 p.m. on March 15, the NRC staff met wi representatives of the State of Vermont to answer questions pertaining o the same proposed Technical Specification change.

VYNPC representatives ere also present in the afternoon meeting, and voluntarily contributed inf ation in response to certain questions raised by the State of Vernont.

copy of the VYNPC slides that were presented and an attendance roster for oth of these meetings are enclosed.

Original signed by:

Vernon L.

eney, Senior Project Manager Project rectorate I-3 Divis n of Reactor Pro,iects I/II

Enclosures:

m y.

h As stated cc: See next page

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3/15/88 9:30 A. M. Meeting 8etween NRC ar.d VYNPC Pegarding Logic System Functional Testing Name Oraanization Vern Roonay

'N7C/P01-3 Scott Newberry N40/1CSB J.V.. Thayer Yankee Atomic 0 A. Reid termont Yankee R.T. Vibert Yankee Atomic G.J. Hengerle Yankee ic P.J. Donnelly Vermont fankee Warren Murphy Vernont Yankee Mark Wetterhaan Conner & Wetterhaan Ann Hodgdon NRC/0GC Dick Wessman NRC/PDI-3 Joseph P. Joyce NRC/NRR/ICSR Donald R. Haverkamp

'NRC/RI Richard H. Lar,ky NRC/ICSR David langford NRC-NRR-0TSB Tom Dunning NRC-NRR-TSR Dave Mullett State of Vermont Phillip L. Paull Vermont Dept. of.Public Service Wayne Hodger NRC/NRR/SRXB Lambros lois NRC/NRR/SRXB i

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3/15/88 2:00 P.M. Meeting Between NRC and State of Vermont

.Regarding logic System Functional Testing Name Organization Dick Wessman-NRC/PDI-3

- Vern Rooney

-NRC/PDI-3 Phillip Paull Vermont Dept. of Public Service David J. Mullett State of Vermont David Langford NRC/NRR/0TSB NRC/ADRI-Bruce Roger.

NRC/RI Donald Faverkamp Ann Hodgdon NRC/0GC Lambros lois NRD/0EST/SRXB Wayr.e Hodges NRR/ DEST /SRXB Tom Dunning NRR/ DOE /TSB

- Joe Rutberg 0GC/NRR.

Scott Newberry NRC/ICSB

- Mark Wetterhaan Conner & Wetterhaan Don Reid Vermont Yankee Warren Murphy Vermont Yankee

, Joe Scinto NRC/0GC Patrick Donnelly Vermont Yankee n

VYNPC-USNRC MEETING AGENDA 0930 TUESDAY, MARCH 15,1988 Vermoni Yankee Logic Functional Testing Program

1. Introduction / Overview D.A. Reid
2. Testing Program Details P J. Donnelly G.T. Hengerle
3. Equipment Reliability R.T. Vibert P.J. Donnelly
4. Summary W.P. Murphy

Safety Systems Affected by Proposed Amendment Request Core Spray Low Pressure Coolant injection High Pressure Coolant injection Automatic Depressurization Recirculation Pump Trip Primary Containment isolation Reactor Core Isolation Coolant Reactor Building Ventilation & Standby Gas Off-Gas isolation Control Rod Block

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Enhanced Outage Testing i

Consistent with Similar Plants l

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INSTRUMENT CHANNEL TESTING i

Test circuits as installed, minimizing use of jumpers, lifted leads, and "contact boots" Test sensor channels one at a time - restoring one prior to removing another Verify sensor relay state change in all cases:

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Downstream relay action Annunciation or lights

  • Physical measurement (continuity)

Visual (armature plate movement)

Verify key logic relays and sensor relay status before J

j and after testing Verify proper action of all channel components and functions i

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SUBSYSTEM LOGIC TESTING

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> Tests will permit end device actuation wherever possible, 1.e., cycle valves, actuate pump circuits i

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> Logic testing maintains similar criteria as channel testing:

l Verify relay state change Testing circuits as installed Restrict testing to one safety system at a time Subsystem testing includes functional test of each relay i

Always consider impact to plant operation i

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VERMONT YANKEE LOGIC SYSTEM FUNCTIONAL TESTING METHODOLOGY 0

WHY WAS A REVIEW OF VERMONT YANKEE'S LSFT DEEMED PRUDENT?

BECAUSE OF NRC COMMENTS CONCERNING THE MANNER IN WHICH DUANE ARNOLD CONDUCTED THEIR LSFT.

TO ASSURE OURSELVES THAT VERMONT YANKEE ADEQUATELY SATISFIED THE LSFT REQUIREMENTS AS DELINEATED IN THE TECHNICAL SPECIFICATIONS.

O WHY WAS VERil0NT YANKEE'S LSFT PROCEDURES MODIFIED?

IN LIGHT OF THE DUANE ARNOLD CONCERNS, VERMONT YANKEE DECIDED TO ENHANCE THE LSFT METHODS.

THIS ENHANCEMENT IS CONSIDERED TO BE SATISFYING LSFT REQUIREMENTS ABOVE AND BEYOND THOSE DELINEATED BY TECHNICAL SPECIFICATIONS AND THE ORIGINAL SER.

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O WHY WAS A NEW METHODOLOGY GENERATED 7 INITIAL SER AND TECHNICAL SPECIFICATIONS REQUIRED LSFT BE PERFORMED TO THE COMPONENT (RELAY) LEVEL.

THIS WAS THE PHILOSOPHY USED IN GENERATING THE INITIAL LSFT PROCEDURES.

TO ENHANCE LSFT, VERMONT YANKEE REVISED ITS PHILOSOPHY FOR TESTING DONE DURING REFUELING OUTAGES.

O LSFT SHOULD BE PERFORMED TO THE SUBCOMPONENT (CONTACT) LEVEL.

O TO TEST TO THE SUBCOMPONENT LEVEL, LSFT SHOULD BE-PERFORMED WITH THE PLANT SHUTDOWN.

A METHODOLOGY WAS GENERATED TO PROVIDE A LOGICAL METHOD OF INTEGRATING VERMONT YANKEE'S ENHANCEMENT PHILOSOPHY.

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O WHAT IS VERMONT YANKEE'S LSFT METHODOLOGY?

LSFT WILL APPLY TO THOSE SYSTEMS IDENTIFIED IN THE TECHNICAL SPECIFICATIONS.

O RPS 0

CORE SPRAY INITIATION O

PCIS 0

LPCI INITIATION O

HPCI INITIATION 0

ADS INITIATION O

HPCI ISOLATION O

RCIC ISOLATION 0

RPT/ARI O

CONTROL ROD BLOCK

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0 REACTOR BUILDING VENT ISOLATION AND SBGT o 0FF-GAS ISOLATION LSFT OF EACH OF THE ABOVE SYSTEMS WILL CONSIST OF PARAMETER INPUTS AS IDENTIFIED BY THE TECHNICAL SPECIFICATIONS.

FOR EXAMPLE:

HPCI INITIATION O

HIGH DRYWELL PRESSURE O

LOW-LOW REACTOR WATER LEVEL 0

LOW CONDENSATE STORAGE TANK LEVEL 0

HIGH REACTOR WATER LEVEL 0

BUS POWER MONITOR ALL EXISTING LSFT AND SURVEILLANCE TEST PROCEDURES WERE REVIEWED.

CREDIT IS TAKEN FOR TESTING OTHER THAN LSFT WHICH PROVIDES ADEQUATE OVERLAP.

EACH PROCEDURE STEP IS FOLLOWED TO ITS END.

CONTACTS NOT i

VERIFIED ARE IDENTIFIED.

THIS REVIEW ALSO VERIFIED THAT THE EXISTING LSFT PROCEDURES COVERED ALL COMPONENTS REQUIRED TO BE TESTED BY THE TECHNICAL SPECIFICATIONS.

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-THE BALANCE OF CONTACTS REQUIRING VERIFICATION ARE IDENTIFIED.

O FOR CONTACTS WHICH CLOSE, CLOSURE CAN BE VERIFIED BY DOWNSTREAM COMPONENT ACTUATION OR CONTINUITY, O

FOR CONTACTS WHICH OPEN, OPENING CAN BE VERIFIED BY DOWNSTREAM COMPONENT DEACTIVATION, LOSS OF CONTINUITY, OR BY VISUAL OBSERVATION.

TESTING METHODS DEEMED ACCEPTABLE.

O DOWNSTREAM COMPONENT ACTUATION O

MULTIMETERS 0

LIGHTS / BUZZERS 0

VISUAL (OPEN CONTACTS DURING LSFT AND TO DETERMINE INITIAL AND FINAL CONDITIONS) 0 TEST JACKS 0

TEST SWITCHES 0

JUMPERS LIFTED LEADS ARE DEEMED TO BE GENERALLY j

UNACCEPTABLE.

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EQUIPMENT RELIABILITY 3

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-GENERIC:

NPRDS-SEARCH BWROG TECHNICAL SPECIFICATION IMPROVEMENT ANALYSIS.

O VERMONT YANKEE SPECIFIC

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' INTERNAL-DOCUMENT SEARCH SOURCES A.

PAST SURVEILLANCE TEST RESULTS B.

LERS C.

PROS 0

OTHER BWRS 0

RESULTS AND CONCLUSION l

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OTHER BWRS 0

ALMOST ALL BWRS UTILIZE ESSENTIALLY THE SAME RELAYS.

O BWR SURVEILLANCE-INTERVALS NUMBER OF BASED ON GENERAL ELECTRIC SURVEY STATIONS A.

18 MONTHS OR DURING REFUELING OUTAGE.ONLY 19 y

B.

PERFORMS SOME TESTING EVERY SIX MONTHS OR SOONER 7

C.

NUMBER IN "B" PROPOSING CHANGE 6

0 CONCLUSION EXISTING TEST INTERVALS FOR MAJORITY OF BWRS SUBSTANTIATES EQUIPMENT RELIABILITY.

6412R/20.478

L RESULTS 0

GENERICALLY, EQUIPMENT UTILIZED AT VERMONT YANKEE HAS EXCELLENT RELIABILITY.

O PAST HISTORICAL OPERATION AT VERMONT YANKEE CONFIRMS EXCELLENT RELIABILITY OF EQUIPMENT.

O INDUSTRY USE OF SIMILAR EQUIPMENT TO THAT OF VERMONT YANKEE SUPPORTS RELIABILITY OF EQUIPMENT.

CONCLUSION g

O BASED UPON RELIABILITY OF EQUIPMENT UTILIZED AT VERMONT YANKEE FOR PERFORMING LOGIC SYSTEM OPERATIONS, IT IS BELIEVED THAT CHANGING THE TEST INTERVAL TO ONCE PER OPERATING CYCLE WOULD NOT HAVE A SIGNIFICANT EFFECT ON PLANT SAFETY OR OPERATION.

6412R/20.478

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-MEETING

SUMMARY

'DISTRIRUTION:

Docket File NRC Participants HRC A Local PDRs PDI-3 R/F Vern Rooney RWessman-Scott Newbury VPooney Ann Hogodon OGC-Rockville Dick Wessman i

EJordan Joseph P. Joyce JPartlow Donald R. Haverkamp ACRS(10)

Richard H. Lasky HBClayton David langford Tom Dunning Wayne Hodges Lambros Lois David langford Bruce Boger Joe Rutberg Joe Scinto Vermont Yanke_e D. A. Reid Warren Murphy Patrick Donnelly 4

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March - 17,1988 ~

Q Docket No. 50 271 I'

LICENSEE:

Vermont Yankee Nuclear Power Corporation (VYNPC)_

FACILITY: Vermont Yankee Nuclear Power Station

SUBJECT:

MEETING

SUMMARY

On Tuesday, March 15 at 9:30 a.m., the staff met with representatives of

'!YNPC to discuss remaining informational needs associated with VYNPC's proposed Technical Specification to change logic system functional testing at the Vermont Yankee plant. At 2:00 p.m. on March 15, the NRC staff met with representatives of the State of Vermont to answer auestions pertaining to the same proposed Technical Specification change. VYNPC representatives were also present in the afternoon meeting, and voluntarily contributed information in response to certain questions raised by the State of Vermont.

A copy of the VYNPC slides that were presented and an attendance roster for both of these meetings are enclosed.

Driginal signed by:

Vernon L. Rooney, Senior Project Manager Project Directorate I-3 Division of Reactor Projects I/II

Enclosures:

As stated cc: See next page

  • See previous concurrence OFC :PDI-3
DIR/PUI.3
0GC NAME :*VRooney:ck :*RWessman DATE :3/ /88
3/ /88
3/ /88 OFFICIAL RECORD COPY I

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4 March 17,1988 Docket No. 50-?71 LICENSEE: Vermont Yankee Nuclear Power Corporation (VYNDC)

FACILITY: Vernont Yankee Nuclear Pcwer Station

SUBJECT:

MEETING Sl! WARY f

On Tuesdav, March 15 at 9:30 a.m., the staff met with representatives of VYNPC tn discuss remaining informational needs associated with VYNPC's proposed Technical Specification to change logic system functional testing t tha Vermont Yankee plant.

At 2:00 p.m. on March 15, the NRC staff net wi representatives of the State of Vermont to answer questions pertaining o the same proposed Technic Specification change.

VYNPC representatives ere also present in the afternoon repting, and voluntarily contributed inf ation in response to certain Questions raised by the State of Vernant.

copy of the VYNPC slides that were presented and an attendance roster for oth of these meetings are enclosed.

()dginal SIEUBd Db Vernon L.

eney, Senior Project Manager Project rectorate I-3 Divis n of Reactor Projects I/II

Enclosures:

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h As stated cc: See next page r0 5

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.-3 NAME :VRooney:ch :R ssman DATE :344/88

3/t7 /88 /
3/ d/88 OFFICIAL RECOR COPY

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3/15/88 9:30. A. M. Meeting Between NRC and VYNPC Pegarding Logic System Functional Testing Name Oroanization Vern Rooney NRC/P01-3 Scott Newberry

.NRC/1CSB

-J.K. Thayer Yankee Atomic 0.A. Reid Vermont Yankee R.T. Vibert Yankee Atomic G.J. Heng:rle Yankee Atomic P.J. Donnelly Vermont Yankee Warren Murphy.

Vermont Ydnkee Mark Wetterhaan-Conner & Wetterhaan Ann Hodgdon.

NRC/0GC Dick Wessman NRC/ POI-3 Joseph P.' Joyce NRC/NRR/ICSR Donald R.'Haverkamp NRC/RI Richard H. Lasky' NRC/ICSR David Langford-NRC-NRR-0TSB.

Tom Dunning NRC-NRR-TSR Dave Mullett State of Vermont Phillip L. Paull_

Vermont Dept. of Public Service Wayne Hodges NRC/NRR/SRXR Lambros lois NRC/NRR/SRXB I

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P' 3/15/88 2:00 P.M. Meeting Between NRC and State of Vermont Reaarding logic System Functional Testing Name Organization Dick Wessman NRC/PDI-3 Vern Rooney NRC/PDI-3 Phillip Paull Vermont Dept. of Public Service David J. Mullett State of Vermont David langford NRC/NRR/0TSB Bruce Roger NRC/ADRI Donald !!averkamp NRC/RI Ann Hodqdon NRC/0GC Lambros lois NRR/0EST/SRXB Wayne Hodges NRR/ DEST /SRXB Tom Dunning

  • NRR/ DOE /TSB Joe Rutberg OGC/ftRR Scott Newberry MRC/ICSB Mark Wetterhaan Conner & Wetterhaan Don Reid Vermont Yankee Warren Murphy Vermont Yankee Joe Scinto NRC/0GC Patrick Donnelly Vermont Yankee

e VYNPC-USNRC MEETING AGENDA 0930 TUESDAY, MARCH 15,1988 Vermont Yankee Logic Functional Testing Program

1. Introduction / Overview D.A. Reid
2. Testing Program Details P.J. Donnelly G.T. Hengerie l
3. Equipment Reliability R.T. Vibert P.J. Donnelly l
4. Summary W.P. Murphy l

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Safety Systems Affected by Proposed Amendment Request Core Spray l

Low Pressure Coolant injection High Pressure Coolant Injection Automatic Depressurization Recirculation Pump Trip Primary Containment isolation Reactor Core isolation Coolant Reactor Building Ventilation & Standby Gas l

Off-Gas isolation i

Control Rod Block t

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j Basis for Proposed Amendment Request i

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Power Operation i

Enhanced Outage Testing j

Consistent with Similar Plants i

Proven Equipment Reliability 1

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INSTRUMENT CHANNEL TESTING l

Test circuits as installed, minimizing use of jumpers, i

l lifted leads, and "contact boots" l

l Test sensor channels one at a time - restoring one i

prior to removing another l

Verify sensor relay state change in all cases:

Downstream relay action Annunciation or lights

  • Physical measurement (continuity)
  • Visual (armature plate movement) 4 l

Verify key logic relays and sensor relay status before and after testing j

Verify proper action of all channel components and functions

l SUBSYSTEM LOGIC TESTING l

l l

> Tests will permit end device actuation wherever possible, i.e., cycle valves, actuate pump circuits l

l i

l

> Logic testing maintains similar criteria as channel testing:

i Verify relay state change Testing circuits as installed Restrict testing to one safety system at a time l

1 Subsystem testing includes functional test of each relay l

Always consider impact to plant operation 1

I i

l

i VERMONT YANKEE LOGIC SYSTEM FUNCTIONAL TESTING METHODOLOGY 0

WHY WAS A REVIEW OF VERMONT YANKEE'S LSFT DEEMED PRUDENf?

BECAUSE OF NRC COMMENTS CONCERNING THE MANNER IN WHICH DUANE ARNOLD CONDUCTED THEIR LSFT.

TO ASSURE OURSELVES THAT VERMONT YANKEE ADEQUATELY SATISFIED THE LSFT REQUIREMENTS AS DELINEATED IN THE TECHNICAL SPECIFICATIONS.

O WHY WAS VERMONT YANKEE'S LSFT PROCEDURES MODIFIED?

IN LIGHT OF THE DUANE ARNOLD CONCERNS, VERMONT YANKEE DECIDED TO ENHANCE THE LSFT METHODS.

l THIS ENHANCEMENT IS CONSIDERED TO BE SATISFYING LSFT REQUIREMENTS ABOVE AND BEYOND THOSE DELINEATED BY TECHNICAL SPECIFICATIONS AND THE ORIGINAL SER.

l l

l l

e 0

WHY WAS A NEW METHODOLOGY GENERATED 7 INITIAL SER AND TECHNICAL SPECIFICATIONS REQUIRED LSFT BE PERFORMED TO THE COMPONENT (RELAY) LEVEL.

THIS WAS THE PHILOSOPHY USED IN GENERATING THE INITIAL L?CT PROCEDURES.

TO ENHANCE LSFT, VERMONT YANKEE REVISED ITS PHILOSOPHY FOR TESTING DONE DURING REFUELING OUTAGES.

O LSFT SHOULD BE PERFORMED TO THE SUBCOMPONENT l

(CONTACT) LEVEL.

O TO TEST TO THE SUBCOMPONENT LEVEL, LSFT SHOULD BE PERFORMED WITH THE PLANT SHUTDOWN.

A METHODOLOGY WAS GENERATED TO PROVIDE A LOGICAL METHOD OF INTEGRATING VERMONT YANKEE'S ENHANCEMENT PHILOSOPHY.

l l

O WHAT IS VERMONT YANKEE'S LSFT METHODOLOGY?

LSFT WILL APPLY TO THOSE SYSTEMS IDENTIFIED IN THE TECHNICAL SPECIFICATIONS.

O RPS 0

CORE SPRAY INITIATION O

PCIS 0

LPCI INITIATION 0

HPCI INITIATION O

ADS INITIATION O

HPCI ISOLATION O

RCIC ISOLATION O

RPT/ARI O

CONTROL ROD BLOCK 0

REACTOR BUILDING VENT ISOLATION AND SBGT 0

0FF-GAS ISOLATION LSFT OF EACH OF THE ABOVE SYSTEMS WILL CONSIST OF PARAMETER INPUTS AS IDENTIFIED BY THE TECHNICAL SPECIFICATIONS.

FOR EXAMPLE:

HPCI INITIATION O

HIGH DRYWELL PRESSURE O

LOW-LOW REACTOR WATER LEVEL 0

LOW CONDENSATE STORAGE TANK LEVEL 0

HIGH REACTOR WATER LEVEL 0

BUS POWER MONITOR ALL EXISTING LSFT AND SURVEILLANCE TEST PROCEDURES WERE REVIEWED.

CREDIT IS TAKEN FOR TESTING OTHER THAN LSFT WHICH PROVIDES ADEQUATE OVERLAP.

EACH PROCEDURE STEP IS FOLLOWED TO ITS END.

CONTACTS NOT VERIFIED ARE IDENTIFIED.

THIS REVIEW ALSO VERIFIED THAT THE EXISTING LSFT PROCEDURES COVERED ALL COMPONENTS REQUIRED TO BE TESTED BY THE TECHNICAL SPECIFICATIONS.

l 1

l I

l

THE BALANCE OF CONTACTS REQUIRING VERIFICATION ARE IDENTIFIED.

O FOR CONTACTS WHICH CLOSE, CLOSURE CAN BE VERIFIED BY DOWNSTREAM COMPONENT ACTUATION OR CONTINUITY.

O FOR CONTACTS WHICH OPEN, OPENING CAN BE VERIFIED BY DOWNSTREAM COMPONENT DEACTIVATION, LOSS OF CONTINUITY, OR BY VISUAL OBSERVATION.

TESTING HETHODS DEEMED ACCEPTABLE.

O DOWNSTREAM COMPONENT ACTUATION 0

MULTIMETERS 0

LIGHTS / BUZZERS 0

VISUAL (OPEN CONTACTS DURING LSFT AND TO DETERMINE INITIAL AND FINAL CONDITIONS) 0 TEST JACKS 0

TEST SWITCHES 0

JUMPERS LIFTED LEADS ARE DEEMED TO BE GENERALLY

(,

UNACCEPTABLE.

l t

f i

l l

l l

,c.,

,.e--

e w

EQUIPMENT RELIABILITY

~0 GENERIC

'NPRDS SEARCH BWROG TECHNICAL SPECIFICATION IMPROVEMENT ANALYSIS 0

VERMONT YANKEE-SPECIFIC

_ INTERNAL DOCUMENT SEARCH

' SOURCES A.

PAST. SURVEILLANCE TEST RESULTS B.

LERS C.

PROS 0

OTHER BWRS

'O RESULTS AND CONCLUSION l'

L 1

l

[

6412R/20,478 I

1 I.

c.

OTHER BWRS 0

-ALMOST ALL BWRS UTILIZE ESSENTIALLY THE_SAME RELAYS.

0~

BWR SURVEILLANCE INTERVALS NUMBER OF BASED ON GENERAL-ELECTRIC SURVEY

_$IATIONS A. -18 MONTHS OR DURING REFUELING OUTAGE ONLY 19 l.

B.-

PERFORMS SOME TESTING EVERY SIX MONTHS OR S0ONER 7

l C.

NUMBER IN "B" PROPOSING CHANGE 6

0 CONCLUSIQN l

EXISTING TEST INTERVALS FOR MAJORITY OF BWRS SUBSTANTIATE $

EQUIPMENT RELIABILITY.

i f

1 i

6412R/20.478 1'

t.

O RESULTS 0

GENERICALLY, EQUIPMENT UTILIZED AT VERMONT YANKEE HAS l

EXCELLENT RELIABILITY.

O PAST HISTORICAL OPERATION AT VERMONT YANKEE CONFIRMS EXCELLENT RELIABILITY OF EQUIPMENT.

(

0 INDUSTRY USE OF SIMILAR EQUIPMENT TO THAT OF VERMONT l

YANKEE SUPPORTS RELIABILITY OF EQUIPMENT.

l CONCLUSION 0

BASED UPON RELIABILITY OF EQUIPMENT UTILIZED AT VERMONT l

YANKEE FOR PERFORMING LOGIC SYSTEM OPERATIONS, IT IS BELIEVED THAT CHANGING THE TEST INTERVAL TO ONCE PER OPERATING CYCLE WOULD NOT HAVE A SIGNIFICANT EFFECT ON PLANT SAFETY OR OPERATION.

6412R/20.478 l

i

~: MEETING

SUMMARY

DISTRIBUTION:

Docket File NRC' Participants 1

NRC A Local PDRs PDI-3 R/F Vern Rooney RWessman Scott Newbury VRooney Ann Hogodon OGC-Rockville Dick Wessman EJordan Joseph P. Joyce JPartlow' -

-Donald R.' Haverkamp ACRS-(10)

Richard H. Lasky-HBClayton David Langford-Tom Dunning-Wayne Hodges Lambros Lois David Langford Bruce Roger Joe Rutberg Joe Scinto-Vermont Yankee D. A. Reid.

Warren Murphy Patrick Donnelly l

I i

l l-L'

O o

March 17,1988

.D Docket No. 50-271 LICENSEE: Vermont Yankee Nuclear Power Corporation (VYNPC)

FACILITY: Vermont Yankee Nuclear Power Station

SUBJECT:

MEETING

SUMMARY

On Tuesday, March 15 at 9:30 a.m., the staff met with representatives of VYNPC to discuss remaining informational needs associated with VYNPC's proposed Technical Specification to change logic system functional testing at the Vermont Yankee plant. At 2:00 p.m. on March 15, the NRC staff met with representatives of.the State of Vermont to answer ouestions pertaining to the same proposed Technical Specification change.

VYNPC representatives were also present in the afternoon meeting, and voluntarily contributed information in response to certain questions raised by the State of Vermont. A copy of the VYNPC slides that were presented and an attendance roster for both of these meetings are enclosed.

Uriginal signed by:

Vernon L. Rooney, Senior Project Manager Project Directorate I_3 Division of Reactor Projects I/II

Enclosures:

As stated cc: See next page

  • See previous concurrence OFC :PDI-3
DIR/PDI-3
0GC NAME :*VRooney:ck :*RWessman DATE :3/ /88
3/ /88
3/ /88 OFFICIAL RECORD COPY

March 17,1988 Docket No. 50-?71 LICENSEE:. Vermont Yankee Nuclear Power Corporatinn (VYNDC)

FACILITY:

Vermont Yankee Nuclear Power Station

SUBJECT:

MEETING SIMMARY

/

On Tuesda,v, March 15 at 9:30 a.m., the staff met with representatives of VYNPC to discuss remaining informational needs associatad with VYNPC's proposed Technical Specification to change logic system functional testing t the Vermont Yankee plant.

At 2:00 p.m. on March 15, the NRC staff met wi representatives of the State of Vermont to answer questions pertaining o the same proposed Technical Specification change.

VYNPC representatives ere also present in the afternoon reating, and voluntarily contributed inf ation in response to certain questions raised by the State of Vernant.

copy of the VYNPC slides that were presented and an attendance roster for oth of these meetings are enclosed, t iginal Signed by:

Vernon L.

soney, Senior Project Manager Project rectorate I-3 Divis n of Reactor Pro.iects I/II

Enclosures:

h~#.

As stated l

cc: See next page

,, ()

d*

0FC

-3 C

(

PDI-3 g - :DI

:--- 7 NAME :VRooney:ck :Rh ssman DATE :3/r4/88

3/(/ /88
3/ d/88 l

0FFICIAL RECOR COPY l

/.

1

/

l 1

l

/,

l l

l l

3/15/88 9:30 A. M. Meeting Between NRC and VYNPC Pegarding Logic System-Functional Testing Name Oroanization Vern Roonay NRC/PDI-3 Scott Newberry NRC/1CSB J.K. Thayer-Yankee Atomic 0.A. Reid' Vermont Yankee

' R.T. Vibert Yankee Atomic G.J. Hengerle Yankee Atomic P.J. Donnelly Vermnnt Yankee Warren Murphy Vernont Yankee

-Mark Wetterhaan Conner & Wetterhaan Ann Hodgdon NRC/0GC Dick Wessman NRC/ POI-3 Joseph P. Joyce NRC/NRR/ICSR Donald R. Haverkamp NRC/RI Richard.H. Lasky.

NRC/ICSR David Langford NRC-NRR-0TSB Tom Dunning NRC-NRR-TSR Dave Mullett State of Vermont

- Phillip L. Paull Vermont Dept. of Public Service -

Wayne Hodges NRC/NRR/SRX8 Lambros Lois NRC/NRR/SRXB 1

i l

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3/15/88 12:00 P.M. Meeting Between NRC and State of Vermont Regarding logic System Functional Testing Name Organization Dick Wessman NRC/PDI -Vern Rooney NRC/PDI-3 Phillip Paull' Vermont Dept. of Public. Service.

David J.-Mullett State of Vermont David langford NRC/NRR/0TSB Bruce Roger-

.NRC/RI NRC/ADRI Donald Haverkamp Ann Hodgdon NRC/0GC Lambros lois NRR/0EST/SRXB-Wayne Hodges NRR/ DEST /SRX8 Tom Dunning NRR/00E/TSB Joe Rutoerg OGC/NRR Scott Newberry NRC/ICSB Mark Wetterhaan Col.ner & Wetterhaan Don Reid Vermont Yankee Warren Murphy Vermont Yankee Joe Scinto NRC/0GC Patrick Donnelly Vermont Yankee

[-

VYNPC-USNRC MEETING AGENDA 0930 TUESDAY, MARCH 15,1988 Vermont Yankee Logic Functional Testing Program

1. Introduction / Overview D.A. Reid
2. Testing Program Details P.J. Donnelly G.T. Hengerie i

l i

3. Equipment Reliability R.T. Vibert P.J. Donnelly
4. Summary W.P. Murphy

i I

Safety Systems Affected by Proposed Amendment Request i

Core Spray Low Pressure Coolant injection High Pressure Coolant Injection Automatic Depressurization Recirculation Pump Trip i

Primary Containment isolation Reactor Core Isolation Ccaiant l

Reactor Building Ventilation & Standby Gas Off-Gas isolation l

Control Rod Block i

I Basis for Proposed Amendment Request Maintain Safety System Operability During Power Operation Enhanced Outage Testing Consistent with Similar Planis l

Proven Equiprnent Reliability L

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INSTRUMENT CHANNEL TESTING 1

i i

l b

Test circuits as installed, minimizing use of jumpers, l

lif ted leads, and "contact boots"

)

Test sensor channels one at a time - rectoring one prior to removing another j

Verify sensor relay state change in all cases:

l Downstream relay action l

Annunciation or lights i

Physical measurement (continuity) l Visual (armature plate movement) l Verify key logic relays and sensor relay status before and after testing i

Verify proper action of all channel components l

and functions l

i

I SUBSYSTEM LOGIC TESTING

> Tests will permit end device actuation wherever possible, i.e., cycle valves, actuate pump circuits l

> Logic testing maintains similar criteria as channel testing:

l l

Verify relay state change Testing circuits as installed Restrict testing to one safety system at a time Subsystem testing includes functional test of each relay Always consider impact to plant operation

VERMONT YANKEE L9GIC SYSTEM FUNCTIONAL TESTING METHODOLOGY 0

WHY WAS A REVIEW OF VERMONT YANKEE'S LSFT DEEMED PRUDENT?

BECAUSE OF NRC COMMENTS CONCERNING THE MANNER IN WHICH DUANE ARNOLD CONDUCTED THEIR LSFT.

TO ASSURE OURSELVES THAT VERMONT YANKEE ADEQUATELY SATISFIED THE LSFT REQUIREMENTS AS DELINEATED IN THE TECHNICAL SPECIFICATIONS.

l 0

WHY WAS VERMONT YANKEE'S LSFT PROCEDURES MODIFIED?

IN LIGHT OF THE DUANE ARNOLD CONCERNS, VERMONT YANKEE DECIDED TC ENHANCE THE LSFT METHODS.

THIS ENHANCEMENT IS CONSIDERED TO BE SATISFYING LSFT REQUIREMENTS ABOVE AND BEYOND THOSE DELINEATED BY TECHNICAL SPECIFICATIONS AND THE ORIGINAL SER.

l l

l l

~

O WHY WAS A NEW METHODOLOGY GENERATED?

INITIAL SER AND TECHNICAL SPECIFICATIONS REQUIRED LSFT BE PERFORMED TO THE COMPONENT (RELAY) LEVEL.

THIS WAS THE PHILOSOPHY USED IN GENERATING THE INITIAL LSFT PROCEDURES.

TO ENHANCE LSFT, VERMONT YANKEE REVISED ITS PHILOSOPHY FOR TESTING DONE DURING REFUELING OUTAGES.

O LSFT SHOULD BE PERFORMED TO THE SUBCOMPONENT (CONTACT) LEVEL.

O TO TEST TO THE SUBCOMPONENT LEVEL, LSFT SHC.,LD BE PERFORMED WITH THE PLANT SHUTDOWN.

A METHODOLOGY WAS GENERATED TO PROVIDE A LOGICAL METHOD OF INTEGRATING VERMONT YANKEE'S ENHANCEMENT PHILOSOPHY.

M i i

-=

- e O

WHAT IS VERMONT YANKEE'S LSFT METHODOLOGY?

LSFT WILL APPLY TO THOSE SYSTEMS IDENTIFIED IN THE TECHNICAL SPECIFICATIONS.

O RPS 0

CORE SPRAY INITIATION O

PCIS 0

LPCI INITIATION O

HPCI INITIATION O

ADS INITIATION O

HPCI ISOLATION 0

RCIC ISOLATION O

RPT/ARI O

CONTROL R0D BLOCK 0

REACTOR BUILDING VENT ISOLATION AND SBGT 0

0FF-GAS ISOLATION LSFT OF EACH OF THE ABOVE SYSTEMS WILL CONSIST OF PARAMETER INPUTS AS IDENTIFIED BY THE TECHNICAL l

SPECIFICATIONS.

FOR EXAMPLE:

HPCI INITIATION O

HIGH DRYWELL PRESSURE O

LOW-LOW REACTOR WATER LEVEL O

LOW CONDENSATE STORAGE TANK LEVEL O

HIGH REACTOR WATER LEVEL 0

BUS POWER MONITOR ALL EXISTING LSFT AND SURVEILLANCE TEST PROCEDURES WERE REVIEWED.

CREDIT IS TAKEN FOR TESTING OThER THAN LSFT WHICH PROVIDES ADEQUATE OVERLAP.

EACH PROCEDURE STEP IS FOLLOWED TO ITS END.

CONTACTS NOT VERIFIED ARE IDENTIFIED.

THIS REVIEW ALSO VERIFIED THAT THE EXISTING LSFT PROCEDURES COVERED ALL COMPONENTS REQUIRED TO BE TESTED BY THE TECHNICAL SPECIFICATIONS.

l 1

l l

c

THE BALANCE OF CONTACTS REQUIRING VERIFICATION ARE IDENTIFIED.

O FOR CONTACTS WHICH CLOSE, CLOSURE CAN BE VERIFIED BY DOWNSTREAM COMPONENT ACTUATION OR CONTINUITY.

O FOR CONTACTS WHICH OPEN, OPENING CAN BE VERIFIED BY DOWNSTREAM COMPONENT DEACTIVATION, LOSS OF CONTINUITY. OR BY VISUAL OBSERVATION.

TESTING METHODS DEEMED ACCEPTABLE.

O DOWNSTREAM COMPONENT ACTUATION O

MULTIMETERS 0

LIGHTS /EUZZERS 0

VISUAL (OPEN CONTACTS DURING LSFT AND TO DETERMINE INITIAL AND FINAL CONDITIONS) 0 TEST JACKS 0

TEST SWITCHES 0

JUMPERS LIFTED LEADS ARE DEEMED TO PF GENERALLY UNACCEPTABLE.

r n

n

' f

^-.;

EQUIPMENT RELIABILITYJ

'O GENERIC NPRDS SEARCH BWROG TECHNICAL ",PECIFICATION IMPROVEMENT ANALYSIS L

.0 VERMONT YANKEE SPECIFIC INTERNAL DOCUMENT SEARCH SOURCES.

A.

PAST SURVEILLANCE TEST RESULTS B.

LERS C.

PROS t

f. -

0 OTHER BWRS 0

RESULTS AND CONCLUSION L.

6412R/20.479 h

.I_

OTHER BWRS 0

ALMOST ALL BWRS UTILIZE ESSENTIALLY THE SAME RELAYS.

0-BWR SURVEILLANCELINTERVALS-NUMBER OF BASED ON GENERAL ELECTRIC SURVEY STATIONS A.

18 MONTHS OR DURING REFUELING OUTAGE ONLY 11 9 1B.

PERFORMS SOME TESTING EVERY SIX MONTHS

'OR SOONER 7

C.

NUMBER IN "B" PROPOSING CHANGE 6

0 CONCLUSION EXISTING TEST INTERVALS FOR MAJORITY OF BWRS SUBSTANTIATES EQUIPMENT RELIABILITY.

l.

l L

1 1

6412R/20,478 i

q RESULTS 0

GENERICALLY, EQUIPMENT UTILIZED AT VERMONT YANKEE HAS EXCELLENT RELIABILITY.

O PAST HISTORICAL OPERATION AT VERMONT YANKEE CONFIRMS EXCELLENT RELIABILITY OF EQUIPMENT.

O INDUSTRY USE OF SIMILAR EQUIPMENT TO THAT OF VERMONT YANKEE SUPDORTS RELIABILITY OF EQUIPMENT.

CONCLUSION 0

BASED UPON RELIABILITY OF EQUIPMENT UTILIZED AT VERMONT YANKEE FOR PERFORMING LOGIC SYSTEM OPERATIONS, IT IS BELIEVED THAT CHANGING THE TEST INTERVAL TO ONCE PER OPERATING CYCLE WOULD NOT HAVE A SIGNIFICANT EFFECT ON PLANT SAFETY OR OPERATION.

6412R/20.478

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MEETING SUWARY

-DISTRIRUTION:

Decket*fjje NRC Participants NRCT Locil' PDRs PDI-3.R/F Vern Rooney RWessman Scott Newbury.

VPooney Ann Hogodon 0GC-Rockville Dick Wessman EJordan Joseph P. Joyce JPartlow Donald R. Haverkamp ACRS (10) e Richard H. Lasky HBClayton David Langford Tom Dunning Wayne Hodges

-Lambros Lois David Langford Bruce Roger Joe Rutberg Joe Scinto Vermont Yankee D. A. Reid Warren Murphy Patrick Donnelly i

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