05000370/LER-2005-002, Re Ice Condenser Lower Inlet Door Failed Surveillance Testing
| ML051310166 | |
| Person / Time | |
|---|---|
| Site: | Mcguire |
| Issue date: | 05/02/2005 |
| From: | Gordon Peterson Duke Power Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 05-002-00 | |
| Download: ML051310166 (8) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 3702005002R00 - NRC Website | |
text
A Duke
. AtPowere A Duke Energy Company GARY R. PETERSON Vice President McGuire Nuclear Station Duke Power MGO1 VP / 12700 Hagers Ferry Road Huntersville, NC 28078-9340 704 875 5333 704 875 4809 fax grpeters duke-energy. corn May 2, 2005 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C.
20555
Subject:
McGuire Nuclear Station, Unit 2 Docket No. 50-370 Licensee Event Report 370/2005-02, Revision 0 Problem Investigation Process (PIP) M-05-00882 Pursuant to 10 CFR 50.73, Sections (a)(l) and (d), attached is Licensee Event Report (LER) 370/2005-02, Revision 0.
This report is being submitted in accordance with 10 CFR 50.73 (a)(2)(i)(B) due to the McGuire Unit 2 failed surveillance test for Ice Condenser Lower Inlet Doors.
Probabilistic risk assessment has determined this event to be of no significance to the health and safety of the public.
There are no regulatory commitments contained in the LER.
Sincerely, G. R. Peterson Attachment r-
01 www. duke-energy. corn
U. S. Nuclear Regulatory Commission May 2, 2005 Page 2 of 2 cc:
W. D. Travers U. S. Nuclear Regulatory Commission Regional Administrator, Region II Atlanta Federal Center 61 Forsyth St., SW, Suite 23T85 Atlanta, GA 30303 J. J. Shea (Addressee Only)
NRC Project Manager (McGuire)
U. S. Nuclear Regulatory Commission Mail Stop 0-7 Dll Washington, DC 20555-0001 J. B. Brady Senior Resident Inspector U. S. Nuclear Regulatory Commission McGuire Nuclear Site Beverly 0. Hall, Section Chief Radiation Protection Section 1645 Mail Service Center Raleigh, NC 27699-1645
Abstract
Unit Status: At the time of the event, Unit 2 was in Mode 5 (Cold Shutdown) at 0 percent power.
Event Description
On 3/3/05, as-found torque testing of the forty-eight Ice Condenser Lower Inlet Doors (LIDs) was performed in accordance with Technical Specification (TS) Surveillance Requirement (SR) 3.6.13.6.
Seven of the forty-eight LIDs failed to meet their test acceptance criteria.
These seven LIDs were retested on 3/25/05 (in the as-found condition) and five of the seven LIDS failed to meet their test acceptance criteria.
Subsequently, McGuire determined that one or more of these five LIDs could have been previously inoperable in Modes 1-4 for a period longer than allowed by TS.
Event Cause
The five doors failing the verification tests on 3/3/05 and 3/25/05 were due to LID spring tension being out of adjustment.
Corrective Action
The five LIDs were repaired.
All forty-eight LIDs were satisfactorily retested on 3/30/05 (in the as-left condition).
LID corrective and preventative maintenance practices will be reviewed for possible enhancements.
TSSR 3.6.13.6 and associated Bases will be reviewed for possible enhancements.
NRC FORM 366 (6-2004)
(if more space is required, use additional copies of (If more space is required, use additional copies of (if more space is required, use additional copies of (If more space is required, use additional copies of (If more space is required, use additional copies of NRC Form 366A)
ADDITIONAL INFORMATION
A review of the McGuire corrective action database identified one previous reportable occurrence of LIDs failing to meet the Torque Test.
This was reported in LER 369/99-01.
Applicable Energy Industry Identification (EIIS) system and component codes are enclosed within brackets.
McGuire unique system and component identifiers are contained within parentheses.