ML20236A060

Summary of 890214-17 Meetings W/Util & Foxboro Co Re Review of Reactor Protection Sys Upgrade Implemented During 1987 Outage

ML20236A060
Person / Time
Site:	Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png
Issue date:	03/08/1989
From:	Wang A Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8903160349
Download: ML20236A060 (5)

Text

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soug'of UNITED STATES

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WASHINGTON, D. C. 20555 j

e March 8, 1989

' Docket.No. 50-213 Licensee: Connecticut Yankee Atomic Power Company Facility: Haddam Neck Plant

SUMMARY

OF FEBRUARY 14-17, 1989 AUDIT OF REACTOR PROTECTION SYSTEM UPGRADE 50.59 REVIEW On February 14 through 17, 1989, the staff met with Connecticut Yankee Atomic Power Company (CYAPCO) and the Foxboro Company (CYAPC0 vendor for reactor protection system (RPS) instrumentation) to review the RPS upgrade implemented during the 1987 outage. The staff stated that its >urposes were to:

1) review the hardware and software installed during t1e Phase I of the RPS upgrade,2)reviewthehardwareandsoftwarerelatedtothePhaseIIchanges and 3) provide a SER for the Foxboro instruments being used at Haddam Neck.

In addition, the staff hoped to address the 50.59 analysis and whether the RPS upgrade was performed correctly under 50.59.

The staff felt CYAPC0 and Foxboro were well prepared and had a good working knowledge'of.the equipment'and its installation. As part of the audit, CYAPC0 walked through a reactor trip signal from sensor to trip.

In general the staff concluded that the equipment and installation were properly implemented and CYAPCO has demonstrated " functional equivalence" of the digital system to

.the original' analog. The staff did however have several open items which they felt CYAPC0 needs.to address:

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-1)

Several errors were identified by Foxboro in the software. There seems to be no paper trail that concludes these items were corrected.

The staff believes an independent review should be performed to verify that a11' identified software errors were corrected. The review should include at least the four modules being used by CYAPCO but can include all modules produced by Foxboro,

'i 2)

The staff needs CYAPCO to document the software reliability program being used by Foxboro, 1

3)

The staff'needs CYAPC0 to state that the new system is functionally equivalent to the original system (comparison of digital curves versus analog curves),

4)

CYAPCO needs to demonstrate that the EMI testing by Foxboro bounds the EMI spectrum at the Haddam Neck site, 5)

CYAPC0 needs to document that the fault testing of L2CR (relay card) was by a transformer at 20 amps or greater, 6)

CYAPCO needs to document that the seismic test performed for the L2CR envelopes the seismic spectrum at the Haddam Neck site, 890316034{

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~' 7) When the watchdog timer tries to reset following a time-out does the trip 1

contact does reset, l

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8) 'CYAPC0 should justify the use of any nest that uses more cards than the Foxboro recommended three cards per nest,

9) Was a failure modes and effects analysis performed or updated for the new RPS, and j

10) Provide the root cause analysis of the failed card at the Haddam Neck site.

The staff stated that with the resolution of the above, the staff can conclude that the Phast'I and II.RPS upgrades at the Haddam Neck site are adequate.

However, the staff is still of the opinion because.of the dramatic change in i

technology, the RPS upgrade should not have been implemented under 50.59.

The staff proposed to issue a safety evaluation in 4 to 6 weeks.

Enclosed is an attendance list.

original signed by Alan B. Wang, Project Manager Project Directorate I-4 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation Enclosure As stated cc w/ enclosure:

See next page DISTRIBUTION E Docket. File 2 NRC & Local PDRs JSniezek Plant File JStolz AWang OGC EJordan BGrimes NRC

Participants:

J.Leiwo L.Beltracchi

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J. Stewart l }

R. Et ACRS(10)'g.

'DC 50-213]

J*SEE PREVIOUS CONCURRENCE LA:PDI-4 PM:PDI-4 PD:PDI-4 SICB SNorris AWang:cb JStolz JStewart

• 02/28/89

• 03/01/89

• 03/01/89

• 03/02/89

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7) When the watchoog timer tries to reset following a time-out does the trip contact does reset,

8) ' CYAPCO should justify the use of any nest that uses more cards than the 1

Foxboro recommended three cards per nest, j

9) Was a failure modes and effects analysis performed or updated for the new RPS, and

10) Provide the root cause analysis of the failed card at the Haddam Neck site.

The staff stated that with the resolution of the above, the staff can conclude that.the Phase I and II RPS upgrades at the Haddam Neck site are adequate.

However, the staff is still of the opinion because of the dramatic change in technology, the RPS upgrade should not have been implemented under 50.59.

The staff proposed to issue a safety evaluation in 4 to 6 weeks.

Erclosed is an attendance list.

original signed by Alan B. Wang, Project Manager Project Directorate I-4 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation Enclosure-As. stated cc W/ enclosure:

See next page DISTRIBUTION Docket File NRC 8 Local PDRs JSniezek l

Plant File JStolz AWang OGC EJordan-BGrimes NRC

Participants:

J.Leiwo L.Beltracchi J. Stewart R. Et ACRS(10)'g.

• DC50-213]

SEE PREVIOUS CONCURRENCE LA:PDI-4 PM:PDI-4 PD:PDI-4 SICB

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1 Mr. Edward J. Mroczka Connecticut Yankee Atomic Power Company Haddam Neck Plant d

cc:

Gerald Garfield, Esquire R. M. Kacich, Manager Day, Berry and Howard Generation Facilities Licensing Counselors at Law Northeast Utilities Service Company City Place Post Office Box 270 Hartford, Connecticut 06103-3499 Hartford, Connecticut 06141-0270 W. D. Romberg, Vice President D. O. Nordquist Nuclear Operations Director'of Quality Services Northeast Utilities Service Company Northeast Nuclear Energy Company Post Office Box 270 Post Office Box 270 Hartford, Connecticut 06141-0270 Hartford, Connecticut 06141-0270 Kevin McCarthy, Director Regional Administrator Radiation Control Unit.

Region I Department of Environmental Protection U. S. Nuclear Regulatory Commission State Office Building 475 Allendale Road Hartford, Connecticut 06106 King of Prussia, Pennsylvania 19406 Bradford S. Chase, Under Secretary Board of Selectmen Energy Division Town Hall Office of Policy and Management Haddam, Connecticut 06103 80 Washington Street llartford, Connecticut 06106 J. T. Shediosky, Resident Inspector Haddam Neck Plant D. B. Miller, Station Superintendent c/o U. S. Nuclear Regulatory Commission Haddam Neck Plant Post Office Box 116 Connecticut Yankee Atomic Power Company East Haddam Post Office RFD 1 Post Office Box 127E East Haddam, Connecticut 06423 East Hampton, Connecticut 06424 G. H. Bouchard, Unit Superintendent Haddam Neck Plant RFD #1 Post Office Box 127E East Hampton, Connecticut 06424 i

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- NAME COMPANY NUMBER ATin Wang NRC/NRR 301-492-1313 Jim Leivo-NRC/ Consultant 301-831-3003 E.P.(Chip)Perkins Northeast Utilities 203-665-3110 Tom Shaffer Northeast Utilities 203-665-3774 J

John Kuwachuk Northeast Utili:.ies 203-665-5102 j

Thomas J. Galloway CYt.PCO I & C 203-267-2556

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. Richard A. Anderson Sr. Corp Q A. Eng Foxboro 508-549-3889 Vincent Mazzie Northeast Utilities 203-665-5029

~ Jim Keiper Foxboro Industrial Consultant 508-549-6332 Leo Beltracchi NRC/RES' 301-492-3549 Jim Stewart NRC/NRR 301-4's2-0784-

. Ray Ets NRC/ Consultant 301-470-1786 Al Wheeler Foxboro Corp. Product Eng.

508-549-2914 Walt White Foxboro/SQA-508-549-2140 Bob Ringland-Foxboro-Noolan-Sales 508-549-6333.

& Marketing 9

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