ML14329B212
| ML14329B212 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 12/01/2014 |
| From: | Martha Barillas Plant Licensing Branch II |
| To: | Glover R Duke Energy Progress |
| Barillas M DORL/LPL2-2 301-415-2760 | |
| References | |
| TAC MF5001 | |
| Download: ML14329B212 (4) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Richard M. Glover H. B. Robinson Steam Electric Plant Site Vice President Duke Energy 3581 West Entrance Road Hartsville, SC 29550 December 1, 2014
SUBJECT:
H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2-REQUEST FOR ADDITIONAL INFORMATION REGARDING THE SPRING 2014 FORCED OUTAGE STEAM GENERATOR TUBE INSPECTIONS (TAC NO. MF5001)
Dear Mr. Glover:
By letter dated September 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14282A020), Duke Energy Progress, Inc. (the licensee) submitted information summarizing the results of the spring 2014 steam generator tube inspections performed at H. B. Robinson Steam Electric Plant, Unit No.2. These inspections were performed in March 2014 during a forced outage, which occurred during operating cycle 29. H. B. Robinson, Unit No.2, entered a forced outage on March 8, 2014, because primary-to-secondary leakage was detected between February 27 and March 7, 2014. In a letter dated October 27, 2014 (ADAMS Accession No. ML14293A672), the U.S. Nuclear Regulatory Commission staff summarized a conference call that was held with the licensee during the forced outage.
The NRC staff has reviewed the licensee's submittal and determined that additional information is needed in order to complete its review. The enclosed document describes this request for additional information (RAI). The RAI was e-mailed to the licensee in draft form on November 13, 2014 (ADAMS Accession No. ML14329A345), with a response requested by December 15, 2014.
If you have any questions, please contact me at 301-415-2760, or by e-mail at Martha. Barillas@nrc.gov.
Docket No. 50-261
Enclosure:
Request for Additional Information cc w/enclosure: Distribution via Listserv Sincerely, IRA/
Martha Barillas, Project Manager Plant Licensing Branch 11-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
REQUEST FOR ADDITIONAL INFORMATION H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO.2 SPRING 2014 FORCED OUTAGE STEAM GENERATOR TUBE INSPECTIONS TAC NO. MF5001 DOCKET NO. 50-261 By letter dated September 29, 2014 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14282A020}, Duke Energy Progress, Inc. (the licensee) submitted information summarizing the results of the spring 2014 steam generator tube inspections performed at H. B. Robinson Steam Electric Plant, Unit No.2. These inspections were performed in March 2014 during a forced outage, which occurred during operating cycle 29. H. B. Robinson, Unit No.2 entered a forced outage on March 8, 2014, because primary-to-secondary leakage was detected between February 27 and March 7, 2014.
In order to complete the review, the U.S. Nuclear Regulatory Commission staff requests responses to the follow questions:
- 1. During the March 24, 2014, conference call, it was stated that visual inspections were planned for the tubesheet and the downcomer region of the "C" steam generator.
Please discuss the results of these inspections.
- 2. Was an eddy current inspection performed on the leaking tube after the in situ pressure test? If so, please discuss whether there was any change in the eddy current data pre-and post-test.
- 3. Please discuss the extent of the array probe inspections. For example, were the inspections performed from the H-star distance below the top of the tubesheet to the first tube support plate?
- 4. Please confirm that all service-induced indications have been reported, including those that may not have shown changes since prior inspections (e.g., Historical No Change indications).
Enclosure
- via memo dated November 10 2014 OFFICE LPL2-2/PM LPL2-2/LAiT LPL2-2/LA NRR/DE/ESGB*
LPL2-2/BC (A)
LPL2-2/PM NAME MBarillas LRonewicz BCiayton GKulesa LRegner MBarillas DATE 11/28/14 11/28/14 11/28/14 11/10/14 12/01/14 12/01/14