ML20198D929

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Forwards Requested Info Re Request to Revise TSs Elimination of Periodic Pressure Sensor Response Time Tests & Elimination of Periodic Protection Channel Response Time Tests
ML20198D929
Person / Time
Site: Vogtle  Southern Nuclear icon.png
Issue date: 12/16/1998
From: Beasley J
SOUTHERN NUCLEAR OPERATING CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LCV-1175-A, NUDOCS 9812230292
Download: ML20198D929 (7)
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'* J. Bamie Beasley, Jr, P.E. Southern Nuclear

    • - - Vice President Operating Company,Inc.

Vogtle Project c inverness Center Parkway P0. Box 1295 Birmingham. Alabama 35201 Tel 205.992.7110 Fcx 205.992.0403 SOUTHERN COMPANY Enery to Serve YourWorld" December 16, 1998 LCV-l l75-A Docket Nos. 50-424 I 50-425-U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555 Ladies and Gentlemen:

VOGTLE ELECTRIC GENERATING PLANT l REQUEST TO REVISE TECHNICAL SPECIFICATIONS ELIMINATION OF PERIODIC PRESSURE SENSOR RESPONSE TIME TESTS AND ELIMINATION OF PERIODIC PROTECTION CHANNEL RESPONSE TIME TESTS l

By letter dated July 13,1998, (LCV-1175) Southern Nuclear Operating Company (SNC) proposed to revise the Vogtle Electric Generating Plant (VEGP) Unit I and Unit 2 Technical Specifications (TS) to eliminate periodic response time testing requirements on selected

. sensors and selected protection channels. In support of their review of the proposed amendment, the NRC staff has requested additionalinformation. The requested information .

is provided in the enclosed Response to Request for Additional Information.  ;

Sincerely.

d's

. B. Beasley, Jr.

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I' OS 9812230292 981216 PDR ADOCK 05000424-N P

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U. N. Nuclur Regulitory Commission d'

LCV-I l75-A

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Enclosure:

. Response to Request for Additional Information l-xc: Southern Nuclear Operating Company Mr. J. T. Gasser Mr. M. Sheibani

. NORMS l ..

U. S. Nuclear Regulatory Commission Mr. L. A. Reyes, Regional Administrator Mr. D.'ll. Jaffe, Senior I-roject Manager, NRR i Mr. John Zeiler, Senior Resident inspector, Vogtle State of Georgia Mr. L. C. Barrett, Commissioner, Department of Natural Resources -

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I DTechnical Specifications \TECllSPEC\RTT_ELIMilfV i l 75.A. DOC

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Enclosure Vogtle Electric Generating Plant Request to Revise Technical Specifications Elimination Of Periodic Pressure Sensor Response Time Tests And Elimination Of Periodic Protection Channel Response Time Tests Response to Request for Additional Information Questions:

1. Please state which protection channel equipment is in the RPS and ESF systems.
2. Do the model versions and the printed circuit board revision level match the equipment analyzed in the WOG submittal?  ;

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3. For sensors where RTT will no longer be performed, w hat assumed response time is being used, and how was that number derived? If the assumed response time value was derived from historical data, please provide that data.

j Answers:

1. The requested information is provided in the following table.
2. Yes, the Failure Modes and Effects Analysis (FMEA) in WCAP- 14036 Rev.1, is applicable to the equipment actually installed at Vogtle Units I and 2, and the analysis is valid for the versions of boards utilized. <

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3. The requested information is provided in the following table.

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J VOGTLE UNITS 1 AND 2  !

PROCESS / FUNCTION / ENGIN EERED SAFETY FEATURE / ALLOCATION / TABLE ' [

~i FUNCTION - SENSOR TIME 7300/NIS STRING TIME SSPS RELAYS - TIME -+

CONT. PRESS 111-1 Barton 764/351 1.Osec NLP+NAL 65ms input + Master + Slave =88ms -

CONT. PRESS 111-2 Barton 764/351 1.0sec NLP+NAL 65ms Input + Master + Slave $8ms l CONT. PRESS 111-3 Barton 764/351 1.0sec NLP+NAL 65ms input + Master + Slave 88ms )

STEAM LINE PRESS Tobar 32PA 200ms NLP+NAL 65ms input + Master + Slave - 88ms ,

LO Veritrak 76PG 200ms r

,~ Rosemount i154S119 200ms

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Rosemount 1153GB9 200ms j STEAM LINE PRESS Tobar 32PA 200ms NLP+NAL 65ms input + Master + Slave 88ms

. til NEG RATE Veritrak 76PG 200ms [

Rosemount 1154Sil9 200ms Rosemount i153GB9 200ms -

PZR PRESS LO SI Tobar 32PG 200ms NLP+NAL ~ 65ms input + Master + Slave - 88ms -l Veritrak 76Pil 200ms -[

i Rosemount i154S119 200ms  !

i-RWST LEVEL LO-LO Tobar 32DP 400ms NLP+NAL 65ms input + Master + Slave 88ms ,

Veritrak 76DP 400ms [

Rosemount i153DB5 200ms '!

SG LEVEL LO-LO Tobar 32DP 400ms NLP+NAL 65ms input + Master + Slave 88ms  !

, Veritrak 76DP 400ms  !

Rosemount i154D115 - 200ms [

i SG LEVEL 111-111 Tobar 32DP 400ms NLP+NAL 65ms input + Master + Stave 88ms Veritrak 76DP 400ms 'I Rosemount i154Dil5 200ms 4

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-VOGTLE UNITS I AND 2 .-

PROCESS / FUNCTION / REACTOR TRIP / ALLOCATION / TABLE / (Continued) ' 4 a

- FUNCTION SENSOR . TIME 7300/NIS STRING TIME SSPS RELAYS - TIME -*

NIS RATE lil Detectors Exempt - N/A NIS FMEA 200ms Input 20ms CONTAINMENT - Barton 764/351 1.0sec NLP+NAL 65ms Input 20ms PRESS. REACTOR TRIP FROM (SI) -

STEAMLINE PRESS Tobar 32PA 200ms NLP+NAL 65ms input 20ms LO REACTOR TRIP Veritrak 76PG 200ms FROM (SI) Rosemount 1154S119 200ms Rosemount i153GB9 200ms

. (Note 1) Al!ocated sensor times not used for these variables. These components will continue to be tested as required.  !

Allocated sensor times are derived from method (3; section (9) WCAP-13632 rev. 2 (Vendor Engineering Specifications). Tobar, Veritrak, and Barton times were provided on Table 9-1. Rosemount times are from Rosemount manuals 4302 and 4631. The Rosemount response time specifications may also be found in NUREG/CR-5333. Transmitter FMEAs are based upon EPRI report NP-7243 rev 1.

Values for 7300 cards are from tables 4-7 through 4-12 of WCAP-14036 rev.1. Cards installed are 4NCII,4NRA,6NLP,4NSA, and 9NAL or older artwork l

levels. NIS components installed are; Summing and Level Amp (3359C48G01), Isolation Amp (6%5D75G01), Rate Circuit Assy(3359C41G01), and Bistable

  • Relay Driver Assy (3359C39G01). These were evaluated per NIS FMEA schematic diagram 6065D99.

i SSPS Input and Master relays are Potter & Brumfield Kil series relays. SSPS Slave relays are Pott; i Brumfield MDR relays. Values are tabulated from section 4.8 Westinghouse SSPS FMEA.

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VOGTLE UNITS I AND 2 .

PROCESS / FUNCTION / REACTOR TRIP / ALLOCATION / TABLE  ;

FUNCTION SENSOR TIME 7300/NIS STRING TIME SSPS RELAYS TIME -

PZR. PRESS. til Tobar 32PG 200ms NLP+NAL 65ms input 20ms Veritrak 76Pil 200ms Rosemount 1154S119 200ms PZR. PRESS. LO Tobar 32PG 200ms NLP+NAL 65ms input 20ms Veritrak 76Pil 200ms Rosemount i154S119 200ms SG LEVEL LO-LO Tobar 32DP 400ms NLP+NAL 65ms input 20ms Veritrak 76DP 400ms Rosemount i154Dil5 200ms RCS FLOW LO fobar 32DP 400ms NLP+NAL 65ms input 20ms Veritrak 76DP 400ms Rosemount 115311B5 200ms OPDT (Vary Tavg) Weed N9004E-2B (Note 1) N RA+NSA+NSA +NSA+NS A+N AL 368ms Input 20ms OPDT (Vary DeltaT) Weed N9004E-2B (Note 1) NRA+NSA+NSA+ NAL 293ms Input 20ms OTDT(Vary Tavg) Weed N9004E-2B (Note 1) NRA+NSA+NSA+NSA+NAL 330.5ms input 20ms OTDT (Vary DeltaT) Weed N9004E-2B (Note 1) NRA+NSA+NSA+ NAL 293ms Input 20ms OTDT (Vary Press) Tobar 32PG 200ms NLP+ NSA+NS A+ NAL 145ms input 20ms Veritrak 76Pil 200ms Rosemount i154Sil9 200ms OTDT (Vary Flux) Detectors Exempt N/A NIS (Ims) + NSA+NCil+NSA+NAL 148.5ms input 20ms RCP VOLTAGE LO GE NGV/ SAM (Note 1) N/A N/A Input 20ms RCP FREQ. LO ABB (Note 1) N/A N/A Input 20ms NIS LEVEL 111 Detectors Exempt N/A NIS FMEA 65ms input 20ms

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' VOGTLE UNITS 1 AND 2 - _ , ,. .

PROCESS / FUNCTION / ENGINEERED SAFETY FEATURE / ALLOCATION / TABLE . ',

FUNCTION SENSOR TIME 7300/NIS STRING TIME SSPS RELAYS TIME .

  • CONTAINMENT Westinghouse . (Note 1) N/A N/A Input + Master + Slave - #8ms AREA RADIATION "

, LEVEL 111 CONTAINMENT Westinghouse (Note 1) N/A N/A Input + Master + Slave + Slave 124ms ,

VENT RADIATION . i LEVEL HI ~

(Note 1) Allocated sensor times not used for these variables. These components will continue to be tested as required. [

Allocated sensor times are derived from method (3) section (9) WCAP-13632 rev. 2 (Vendor Engineering Specifications).' Tobar, Veritrak, and Barton times were . ,

provided on Table 9-l. Rosemount times are from Rosemount manuals 4302 and 4631. He Rosemount response time specifications may also be found in l NUREG/CR-5383. Transmitter FMEAs are based upon EPRI report NP-7243 rev 1.  !

Values for 7300 cards are from tables 4-7 through 4-12 of WCAP-14036 rev.1. Cards installed are 4NCII,4NRA,6NLP,4NSA. and 9NAL or older artwork -

levels.

i SSPS Input and Master relays are Potter & Brumfield Kil series relays. SSPS Slave relays are Potter & Brumfield MDR relays. Values are tabulated from section 4.8 Westinghouse SSPS FMEA.

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