ML20080K235
| ML20080K235 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 01/26/1984 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-82-02, IEB-82-2, NUDOCS 8402150341 | |
| Download: ML20080K235 (3) | |
Text
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7 DUKIs Powisa Goxi>m P.O. HOX 30180 CHAHLOTTI5, N.C. 28242 II AI. II. TUCKEH (704) 373-4fn31 TEternioxn vna empasnaar January 26, 1984 Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Su'.te 2900 Atlanta, Georgia 30303
Subject:
Oconee Nuclear Station Docket No. 50-270
Dear Sir:
In response to IE Bulletin 82-02 dated June 2, 1982, please find attached responses to Items 2 and 4 for Unit 2.
Duke Power provided a response to Items 3 and 5 in our submittal deted July 29, 1982. Responses to Item 1 (for all three Oconee units) and to Items 2 and 4 (for Unit 3 only) were provided in our supplemental submittal dated November 15, 1982. Responses to Items 2 and 4 for Unit I were provided in our supplemental submittal dated October 11, 1983.
I declare under penalty of perjury that the statements set forth herein are true and correct to the best of my knowledge, executed on January 26, 1984.
Very truly yours, Wkkm 7-_m Hal B. Tucker PFG/php Attachment cc:
Mr. J. C. Bryant NRC Resident Inspector Oconee Nuclear Station Mr. John F. Suermann l
Office of Nuc1 car Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 8402150341 840126
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Item 2 Threaded fasteners of closure connections, identified in the scope t bulletin, when opened for component inspection or maintenance chall bs removed, cleaned, and inspected per IWA-2210 and IWA-2220 of ASME Code Section XI (1974 edition or later) before being reused.
Response
The components that were removed for inspection or maintenance during Unit 2's latest refueling outage included the following:
- 1) Once Through Steam Generator (OTSG) upper and lower manways
- 2) Reactor Coolant Pump (RCP) main flange bolting on all four RCPs Item 4 A written report signed under oath or af firmation under provisions of Section 182a, Atomic Energy Act of 1954 as amended, shall be submitted to the Regional Administrator of the appropriate NRC Regional Office within 60 days following the completion of the outage during which Action Item 2 was performed.
The report is to include:
a.
A statement that Action Item 1 has been completed, b.
Identification of the specific connections examined as required by Action Item 2.
c.
The results of the examinations performed on the threaded fasteners as required by Action Item 2.
If no degradation was observed for a particular connection, a statement to that effect, identification of the connection, and whether the fasteners were examined in place or removed is all that is required.
If degradation was observed, the report should provide detailed information.
Response
Sub-Item a As was discussed in our November 15, 1982 submittal, the procedures as discussed in the bulletin have been completed and these along with a training program are on file.
Sub-Item b Same as was listed in Item 2, plus the Control Rod Drive Mechanism (CRDM) bolting.
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C Sub-Itena c The method and results of the examination of the components listed in Sub -Item b are as follow:
Component Inspection Method Inspection Results 1.
OTSG "A" upper Visual No degradation was observed.
manway bolting All studs were replaced with new studs due to redesign of fastener.
2.
OTSG "A" lower Visual No degradation was observed, y
manway bolting All studs were replaced with new studs due to redesign of fastener.
3.
OTSG "B" upper Visual No degradation was observed.
manway bolting All studs were replaced with new studs due to redesign of fastener.
4.
OTSG "B" lower Visual No degradation was observed.
mar.way bolting All stuls were replaced with new studs due to redesign of fastener.
5.
RCP main flange Ultrasonic testing, Two studs on RCP 2B1 were bolting, all four Visual Dimensional replaced due to unacceptable RCPs corrosion / erosion wastage.
No rejectable indications were found on the remaining bolts.
All studs on 2A2 RCP were replaced with new studs due to material change.
6.
CRDMs Visual (in place)
No leakage through the flange was observed.
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