IR 05000261/2013010

IR 05000261-13-010, 12/16/2013 - 12/19/2013; H.B. Robinson Steam Electric Plant, Unit 2; Supplemental Inspection

ML14031A464
Person / Time
Site:	Robinson
Issue date:	01/31/2014
From:	Hopper G T NRC/RGN-II/DRP/RPB4
To:	Gideon W R Duke Energy Progress
References
EA-13-129 IR-13-010
Download: ML14031A464 (14)

Text

January 31, 2014

EA-13-129 Mr. William Vice President Duke Energy Progress, Inc. H. B. Robinson Steam Electric Plant, Unit 2 3581 West Entrance Rd Hartsville, SC 29550

SUBJECT: H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT 2 - SUPPLEMENTAL INSPECTION REPORT 05000261/2013010 AND ASSESSMENT FOLLOW-UP LETTER

Dear Mr. Gideon:

On October 2, 2012, your staff failed to perform adequate preventive maintenance on the dedicated shutdown diesel generator (DSDG) cooling system in accordance with vendor recommendations and as required by procedure PLP-018, "Quality Assurance Program for Non-

Safety Systems and Equipment used to meet the Station Blackout rule" and Fire Safe Shutdown (SSD) equipment maintenance requirements. This performance deficiency resulted in the DSDG automatically shut down on high engine temperature due to a failure of the radiator drive belts during surveillance testing.

On March 30, 2013, the U.S. Nuclear Regulatory Commission (NRC) completed the onsite inspection at your Robinson Unit 2 facility. Based on the results of this inspection, documented in both NRC Inspection Report 05000261/2013008 and the final significance determination documented in NRC Inspection Report 05000261/2013009, the NRC assigned a White finding Action Matrix input to the Mitigating Systems cornerstone in the second quarter of 2013 based upon the exit meeting date of May 22, 2013. However, after further review, and in consideration that the on-site inspection activity was completed on March 30, 2013, the Action Matrix input has been revised to start in the first quarter of 2013. In response to this Action Matrix input, the NRC informed you that a supplemental inspection under Inspection Procedure 95001, "Supplemental Inspection for One or Two White Inputs in a Strategic Performance Area," would be required. On October 25, 2013, you informed the NRC that Robinson was ready for this supplemental inspection.

On December 19, 2013, the NRC completed the supplemental inspection and discussed the results of this inspection with Mr. Mike Glover, Director of Site Operations, and other members of your staff. The results of this inspection are documented the in the enclosed inspection report. The NRC performed this supplemental inspection to determine if: 1) the root and contributing causes for the significant issues were understood; 2) the extent of condition and extent of cause for the identified issues were understood; and 3) your completed or planned corrective actions were sufficient to address and prevent repetition of the root and contributing causes. The NRC determined that your staff's evaluation identified the primary root causes of the issue which were lack of a time-based replacement of the Dedicated Shutdown Diesel Generator radiator fan belts and insufficient procedural guidance to assess fan belt and pulley condition and fan belt tension. These root causes also applied to other safety-related or important-to-safety belt-driven equipment at Robinson Unit 2. The corrective actions taken to prevent recurrence were to replace the belts at a frequency recommended by the vendor and add guidance to the preventative maintenance procedures to check the condition of the belts and pulleys.

The NRC has determined that inspection objectives stated above have been met. Therefore in accordance with IMC 0305, "Operating Reactor Assessment Program," this performance issue shall not be considered in the Action Matrix after the end of the fourth quarter of 2013. The NRC inspectors did not identify any findings or violations of more than minor significance. As a result, the NRC has determined the performance at Robinson Unit 2 to be in the Licensee Response Column of the ROP Action Matrix as of January 1, 2014.

On January 23, 2013, the NRC discussed the implementation of your corrective actions with Mr.

Mike Glover and other members of your staff.

In accordance with Title 10 of the Code of Federal Regulations 2.390, "Public Inspections, Exemptions, Requests for Withholding," of the NRC's "Rules of Practice," a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRC's Public Document Room or from the Publicly Available Records (PARS) component of the NRC's Agency-wide Documents Access and Management System (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely,/RA/

George T Hopper, Chief Projects Branch 4 Division of Reactor Projects Docket No.: 05000261 License No.: DPR-23

Enclosure:

Inspection Report 05000261/2013010

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