05000338/LER-2003-005, Re Inoperable Hydrogen Recombiner Due to Inadequate Work Practices
| ML040290799 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 01/20/2004 |
| From: | Jennifer Davis Virginia Electric & Power Co (VEPCO) |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 03-005-00 | |
| Download: ML040290799 (2) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(x) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(v)(A), Loss of Safety Function - Shutdown the Reactor 10 CFR 50.73(a)(2)(v)(B), Loss of Safety Function - Remove Residual Heat 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(B) |
| 3382003005R00 - NRC Website | |
text
1 OCFR50.73 Virginia Electric and Power Company North Anna Power Station P. 0. Box 402 Mineral, Virginia 23117 January 20, 2004 U. S. Nuclear Regulatory Commission Serial No.:
03-624A Attention: Document Control Desk NAPS:
JHL Washington, D. C. 20555-0001 Docket Nos.: 50-338, 339 License Nos.: NPF-4, 7
Dear Sirs:
Licensee Event Report (LER) No. 50-338, 339/2003-005-00 applicable to North Anna Power Station Units 1 and 2 was submitted on January 7, 2004.
Due to an administrative error, the LER number on NRC Form 366 was inadvertently entered as 2003-002-00 in lieu of 2003-005-00. Attached is a revised NRC Form 366 with the corrected LER number. Please substitute the revised NRC Form 366 in the January 7, 2004 LER submittal.
Very truly yours,
. Davis, Site Vice President rth Anna Power Station Enclosure Commitments contained in this letter: None cc: United States Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 Mr. M. T. Widmann NRC Senior Resident Inspector North Anna Power Station
APPROVED BY OMB NO. 3150-0104 EXPIRES 7-31 -2004 NRC FORM 366 U.S. NUCLEAR REGULATORY (7-2001)
COMMISSION reQ~Estimated the information c ollec~tion.
FACILfTY NAME (1)
DOCKET NUMBER (2)
PAGE (3)
NORTH ANNA POWER STATION, UNIT 1 05000 - 338 1 OF5 TITLE (4)
Inoperable Hydrogen Recombiner Due to Inadequate Work Practices EVENT DATE (5)
LER NUMBER (6)
]jREPORT DATE (7) l 1
OTHER FACILITIES INVOLVED (8)
MONTH DAY YEAR YEAR SEQUENTIAL REVISION MONTH DAY YEAR IFACILTY NME l 05000-NUMBER
- - NUMBER 11 10 2003 2003
-- 005 --
00 01 07 2004 FACILITY NAME DOCUMENTNUMBER 11 T ° l 200 2003l -- 05 --
00 l
0l l
7 l 204 llNorth Anna Power Station, Unit 2 l05000-339 OPERATING 1 THIS REPORTIS SUBMITTED PURSUANTTOTHE REQUIREMENTS OF 10 CFR§: (Checkall thatapply) (11)
MODE (9) l 1 20.2201(b) 20.2203(a)(3)(ii)
=
50.73(a)(2)(ii)(B) 50.73(a)(2)(ix)(A)
POWER 20.2201 (d) 20.2203(a)(4) 50.73(a)(2)(iii) 50.73(a)(2)(x)
LEVEL (10) I 100 -
20.2203(a)(1) 50.36(c)(1)(i)(A)
=
50.73(a)(2)(iv)(A)
=
73.71(a)(4) 20.2203(a)(2)(i) 50.36(c)(1)(ii)(A)
=
50.73(a)(2)(v)(A)
=
73.71 (a)(5) 20.2203(a)(2)(ii) 50.36(c)(2) 50.73(a)(2)(v)(B)
OTHER 20.2203(a)(2)(iii) 50.46(a)(3)(ii) 50.73(a)(2)(v)(C)
Specify in Abstract below or 20.2203(a)(2)(iv) 50.73(a)(2)(i)(A) 50.73(a)(2)(v)(D) in NRC Fornm 366A 20.2203(a)(2)(v)
X 50.73(a)(2)(i)(B) 50.73(a)(2)(vii) 20.2203(a)(2)(vi) 50.73(a)(2)(i)(C) 50.73(a)(2)(viii)(A) 20.2203(a)(3)(i) 50.73(a)(2)(ii)(A)
_ 50.73(a)(2)(viii)(B)
LICENSEE CONTACT FOR THIS LER (12)
NAME TELEPHONE NUMBER (Include Area Code)
J. M. Davis, Site Vice President (540) 894-2101 COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (13)
CAUSE
SYSTEM COMPONENT MANUFACTURER REPORTABLE
CAUSE
SYSTEM COMPONENT MANUFACTURER REPORTABLE TO EPIX l_l llITO EPIX II I
I 1I SUPPLEMENTAL REPORT EXPECTED (14) 1 EXPECTED MONTH DAY YEAR I
I____________________I____________________II____________
SUBMISSION IISSNI I
lYES (Ifyes,complete EXPECTED SUBMISSION DATE).
X I NO DATE (15) l
_ll ABSTRACT (Limit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines) (16)
On November 10, 2003, at 1030 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.91915e-4 months <br />, with Units 1 and 2 operating at 100 percent power, testing of the Unit 2 hydrogen recombiner was being conducted. During testing, the hydrogen recombiner tripped from a low flow condition while attempting to place it in service. An investigation determined that the high and low side isolation valves for the instrument lines to the hydrogen recombiner flow transmitter were closed when they should have been open. This condition existed for greater than the 30-day completion time permitted by Technical Specification 3.6.9. Therefore, this event is reportable pursuant to 10 CFR 50.73 (a)(2)(i)(B) for a condition prohibited by Technical Specifications. The cause of the isolation valves being closed was determined to be inadequate work practices. The isolation valves were subsequently opened and the hydrogen recombiner was successfully started. Testing was satisfactorily completed. This event posed no significant safety implications because no conditions requiring the use of the hydrogen recombiner were experienced during the time the hydrogen recombiner was inoperable. Therefore, the health and safety of the public were not affected by this event.
NRC FORM 366 (1.2001)