ML20244D184
| ML20244D184 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 04/11/1989 |
| From: | Craig Harbuck Office of Nuclear Reactor Regulation |
| To: | Tison Campbell ARKANSAS POWER & LIGHT CO. |
| References | |
| TAC-71157, NUDOCS 8904210196 | |
| Download: ML20244D184 (4) | |
Text
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April 11, 1989 Docket No. 50-313 l
Mr. T. Gene Campbell
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Vice President, Nuclear Operations Arkansas Power & Light Company Post Office Box 551 Little Rock, Arkansas 72203 i
Dear Mr. Campbell:
SUBJECT:
ONCE THROUGH STEAM GENERATOR INSERVICE INSPECTION REMEDIAL ACTION PLAN, ARKANSAS NUCLEAR ONE, UNIT 1 (ANO-1)-
We have completed our review of your steam generator inservice inspection remedial action plan which you submitted in a letter dated November 3,1988.
We are concerned about the significant sulfur-induced intergranular attack (IGA) corrosion activity in the ANO-1 steam generators above the fifteenth support plate. This concern was discussed in your meeting with the staff in Rockville, Maryland, on November 18, 1988.
You made two commitments in the meeting in response to our concern. This letter serves to document those commitments, which were as follows:
(1) Evaluate the adequacy of the existing 1.0 gpm Technical Specification (TS) limit on primary-to-secondary leakage. Factors we expect you to consider in your evaluation include the extent of tube degradation caused by IGA, and the capability of leaking IGA-degraded tubes to sustain loadings associated with postulated accident conditions.
(2)
Pending(the completion of this evaluation and any actions which may result such as TS changes, plant procedure changes, etc.), should steam generator tube leakage requiring shutdown occur, and if the leakage exceeded 0.3 gpm before shutdown of the plant was achieved.
Arkansas Power and Light Company will inform the staff of its plans, or lack.of plans, for inspecting steam generators prior to startup.
As discussed with your staff, the evaluation noted above will be completed by July 31, 1989.
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Hr. T. Gene Campbell '
We understand that your steam generator. inservice inspection remedial action plan consists of the following actions:
Preclude oxygen' ingress into the steam generators during periods of-plant shutdowns by use of a 2 psig nitrogen cap on the steam-generators.
Install preventive sleeving on steam generator tubes deemed most vulnerable to IGA corrosion.
Based on our review of your steam generator ~1nservice-inspection remed181 action plan and your commitments this licensing action is considered clr, sed..
Sincerely,
/s/
C. Craig Harbuck, PEoject Manager Project Directorate - IV Division of Reactor Projects - III, IV, V.and Special Projects Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION Docket File NRC PDR Local PDR PD4 Reading G. Holahan L. Rubenstein J. Calvo P. Noonan C. Harbuck OGC-Rockville E. Jordan B. Grines-ACRS (10)
PD4 Plant File F. Hebdon DOCUMENT NAME: AN01 TAC 71157 PD4/L PD4/PM h PD4/D.) M PNooned' CHarbuck:sr JCalvo 04/ll/89 04/){ /89 04/// /89
Hr. T. Gene Campbell.
We understand that your steam generator inservice inspection remedial action plan consists of the following actions:
Preclude oxygen ingress into the steam generators during periods of plant shutdowns by use of a 2 psig nitrogen cap on the steam generators.
Install preventive sleeving on steam generator tubes deemed most vulnerable to IGA corrosion.
Based on our review of your steam generator inservice inspection remedial action plan and your commitments this licensing action is considered closed.
Sincerely, 7.
C. Cra'g Harbuck, Project Manager Project Directorate - IV Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc: See next page m--mmm__.___---_
I Mr. T. Gene Campbell Arkansas Power & Light Company Arkansas Nuclear One, Unit I cc:
Mr. Den R. Howard, Manager Licenring Arkansas Nuclear One P. O. Box 608-I Russellville, Arkansas 72801 Mr. James H. Levine, Executive Director Nuclear Operations-Arkansas Nuclear One P. O. Box 608 Russellville, Arkansas 72801 Mr. Nicholas S. Reynolds Bishop, Cook, Purcell & Reynolds 1400 L Street, N.W.
Washington, D.C.
20005-3502 Mr. Robert B. Borsum Babcock & Wilcox Nuclear Power Generation Division 1700 Rockville Pike, Suite 525 Rockville, Maryland 20852 Resident Inspector U.S. Nuclear Regulatory Comission 1 Nuclear Plant Road Russellville, Arkansas 77601
. Regional Administrator, Region IV U.S. Nuclear Regulatory Comission Office of. Executive Director for Operations 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Honorable William Abernathy County Judge of Pope County Pope County Courthouse Russellville, Arkansas 72801 Ms. Greta Dicus, Director Division of Environmental Health Protection Arkansas Department of Health 4815 West Markam Street Little Rock, Arkansas 72201 i
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