ML19318C501
| ML19318C501 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 06/18/1980 |
| From: | Martin R Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19318C502 | List: |
| References | |
| NUDOCS 8007010538 | |
| Download: ML19318C501 (4) | |
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. \\ tw R=0 JUN 181980 Docket No. 50-368 LICE!iSEE: Arkansas Power & Light Company (AP&L)
FACILITY: Arkansas Nuclear One, Unit No. 2 (Af10-2)
SUBJECT:
SUINARY OF MAY 19, 1980 MEETIllG-ON CORE PROTECTION CALCULATTON SYSTEM (CPCS) SOFTWARE On May 19, 1980 representatives of AP?.L and Combustion Engineering, Inc. met with the ilRC staff and an flRC consultant in Cethesda, Maryland. Attendees are listed in Enclosure 1.
The licensee had proposed to make changes in the CPCS software as set forth in the AP&L letters of January 31, 1980 and i'ay G,1980. The changes are generally intended to provide additional diagnostic capability.and to address the causes of spurious trips of the reactor protection system.
The slides used in the licensee's presentation are enclosed. The neeting concluded with the staff stating that the six issues identified in Enclosure 2 should be considered further by the staff prior to being implemented in the plant's software. Arranaements were made to have this done as soon as practical and to advise the licensee of the results.
Original siw y R. Partin, project Manager Operating Reactors Branch #3 Division of Licensing
Enclosures:
1.
List of Attendees 2.
Six Issues for Consideration 3.
Slides l
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MEETING
SUMMARY
~ DISTRIBUTION Licensee:
Mr. William Cavanaugh, III Vice President, Generation and Construction Arkansas Power & Light Company P. O. Box 551 Little Rock, Arkansas 72203
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- RMartin ORB Licensing Assistan4PKreutzer OELD AEOD IE-3 RFraley, ACRS-16 Program Support Branch Meeting Sumreary File NRC Participants WHodges*
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p' June 18, 1980 Docket No. 50-368 LICENSEE: Arkansas Power & Light Company (AP&L)
FACILITY: Arkansas Nuclear One, Unit No. 2 (ANO-2)
SUBJECT:
SUMARY OF MAY 19, 1980 MEETING ON CORE PROTECTION CALCULATION SYSTEM (CPCS) SOFTWARE On May 19, 1980 representatives of AP&L and Combustion Engineering, Inc. met with the NRC staff and an NRC consultant in Bethesda, Maryland. Attendees are listed in Enclosure 1.
The licensee had proposed to make changes in the CPCS software as set forth in the AP&L letters of January 31, 1980 and May 6, 1980. The changes are generally intended to provide additional diagnostic capability and to address the causes of spurious trips of the reactor protection system.
The slides used in the licensee's presentation are enclosed. The meeting concluded with the staff stating that the six issues identified in Enclosure 2 should be considered further by the staff prior to being implemented in the plant's software. Arrangements were made to have this done as soon as practical cnd to advise the licensee of the results.
Cu R. Martin, Project Manager Operating Reactors Branch #3 Division of Licensing
Enclosures:
1.
List of Attendees 2.
Six Issues for Consideration 1
3.
Slides cc w/ enclosures 1 & 2:
See next page
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Arkansas Power & Light Company cc:
Di o
a r, L cens g s on Arkansas Power & Light Company Office of Radiation Programs P. O. Box 551 (AW-459)
Little Rock, Arkansas 72203 U. S. Environmental Protection Agency Crystal Mall #2 Mr. James P. O'Hanlon Arlington, Virginia 20460 General Manager Arkansas Nuclear One U. S. Environmental Protection Agency P. O. Box 608 Region VI Office Russellville, Arkansas 72801 ATTN: EIS COORDINATOR 1201 Elm Street t n r tiona1 "
S Nu ar gu atory Comission a
27 P. O. Box 2090 Russellville Arkansas 72801 cc w/ enclosure (s) and incoming dtd.: June 18, 1980 Mr. Robert B. Borsum Director Bureau of Environmental Babcock & Wilcox Health Services Nuclear Power Generation Division 4815 West Markham Street Suite 420, 7735 Old Georgetown Road Little Rock
- Arkan' ""
72201 i
Bethesda, Maryland 20014 Troy B. Conner, Jr., Esq.
Conner, Moore & Corber 1747 Pennsylvania Avenue,'t.W.
Washington, D.C.
20006 Arkansas Polytechnic College Russellville, Arkansas 72801 Honorable Ennil Grant Acting County Judge of Pope County Pope County Courthouse Russellville, Arkansas 72801 Mr. Paul F. Levy, Director Arkansas Depar+m nt of Energy 3000 Kavanaugh Little Rock, Arkansas 72205 Mr. Charles B. Brinkman Manager - Washington Nuclear Operations C-E Power Systems 4853 Cordell Avenue, Suite A-1 Bethesda, Maryland 20014
LIST OF~ ATTENDEES MAY 19,1980 ANO-2 CPCS NRC-CE.
ORNL R. Martin W. J. Gill J. B. Bullock W. Hodges T. M. Starr L. Phillips T. J. Rozek AP&L S. P. Sands J. C. Ennaco D. Dow R. A. Clark H. E. Neuschaefer W. B. Miller B.-Morris M. J. Stofko
.1 F. C. Sernatinger C. B. Brinkman 1
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Enclosure'2
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CIAC, Fsnalty Factor changes de;.r. dant on:
a.
'4cnitude.cf rod deviat'on b.
Direction of rod deviation c.
Rod subgroup with the deviation ad.
Control Element Assembly (CEA) configuration e.
Time (Xenon effects) 2.
CEAC Penalty Factor changes as applied to th'e heat flux in the -
static DNSR calculation logic.
3.
CPC/CEAC Diagnostics - logic added to prevent spurious penalties as a result of Reed Switch Position Transmitters (RS?T) associated-instrumenLation anomalies.
4.
Heat' Flux Filter Modifications.
5.
Addition of a deadband to the icw end of 'the excore detector
- signal range to avoid spuricus cut-of-rarse alarms.
i Implementation of measured valves of certain power distribution constants.
6.
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