05000270/LER-2008-001, Regarding Unit 2 Reactor Trip Due to Indication of Loss of Vacuum During Calibration of a Condenser Pressure Transmitter
| ML081550144 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 05/29/2008 |
| From: | Baxter D Duke Energy Carolinas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| LER 08-001-00 | |
| Download: ML081550144 (7) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(iv), System Actuation 10 CFR 50.73(a)(2)(i) 10 CFR 50.73(a)(2)(vii), Common Cause Inoperability 10 CFR 50.73(a)(2)(ii)(A), Seriously Degraded 10 CFR 50.73(a)(2)(viii)(A) 10 CFR 50.73(a)(2)(ii)(B), Unanalyzed Condition 10 CFR 50.73(a)(2)(viii)(B) 10 CFR 50.73(a)(2)(iii) 10 CFR 50.73(a)(2)(ix)(A) 10 CFR 50.73(a)(2)(iv)(A), System Actuation 10 CFR 50.73(a)(2)(x) 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)(i)(A), Completion of TS Shutdown 10 CFR 50.73(a)(2)(v), Loss of Safety Function 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications |
| 2702008001R00 - NRC Website | |
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I DAVE BAXTER Vice President Oconee Nuclear Station Duke Energy Corporation ONOI VP17800 Rochester Highway Seneca, SC 29672 864-885-4460 864-885-4208 fax dabaxter@dukeenergy.com May 29, 2008 U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C.
20555
Subject:
Oconee Nuclear Station Docket Nos.
50-270 Licensee Event Report 270/2008-01, Problem Investigation Process No.:
Revision 0 0-08-1626 Gentlemen:
Pursuant to 10 CFR 50.73 Sections (a)(1) and (d),
attached is Licensee Event Report 270/2008-01, Revision 0, regarding a Unit 2 reactor trip following an indicated loss of vacuum while calibrating a condenser-pressure transmitter.
This report is being submitted in accordance with 10 CFR 50.73 (a) (2) (iv)
(A).
This event is considered to be of no significance with respect to the health and safety of the public.
Very truly yours,
,r Dave Baxter, Vice President Oconee Nuclear Site Attachment
_-7 ý,-
www. duke-energy. com
NRC FOrIM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 08/31/2010 (9-2007)
, the NRC may digits/characters for each block) not conduct or sponsor, and a person is not required to respond to, the information collection.
- 13. PAGE Oconee Nuclear Station, Unit 2 05000-270 1 OF 6
- 4. TITLE Unit 2 reactor trip due to indication of loss of vacuum during calibration of a condenser pressure transmitter
- 5. EVENT DATE
- 6. LER NUMBER
.7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR YEAR SEQUENTIAL REV MONTH FACLITY NAME DOCKET NUMBER NUMBER NO.
05000 FACILITY NAME DOCKET NUMBER 03 31 2008 2008
- - 001 0
05 29 2008 05000
- 9. OPERATING MODE
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR§: (Check all that apply)
El 20.2201(b)
El 20.2203(a)(3)(i)
El 50.73(a)(2)(i)(C)
El 50.73(a)(2)(vii)
Mode (1)
[E 20.2201(d)
El 20.2203(a)(3)(ii)
El 50.73(a)(2)(ii)(A)
El 50.73(a)(2)(viii)(A)
El 20.2203(a)(1)
El 20.2203(a)(4)
El 50.73(a)(2)(ii)(B)
El 50.73(a)(2)(viii)(B) 20.2203(a)(2)(i)
El 50.36(c)(1)(i)(A)
[I 50.73(a)(2)(iii)
[E 50.73(a)(2)(ix)(A)
- 10. POWER LEVEL El 20.2203(a)(2)(ii)
-- 50.36(c)(1)(ii)(A)
[
50.73(a)(2)(iv)(A)
El 50.73(a)(2)(x)
[3 20.2203(a)(2)(iii)
El 50.36(c)(2)
El 50.73(a)(2)(v)(A)
El 73.71(a)(4)
[I 20.2203(a)(2)(iv)
El 50.46(a)(3)(ii)
[I 50.73(a)(2)(v)(B)
El 73.71(a)(5) 100%
El 20.2203(a)(2)(v)
[I 50.73(a)(2)(i)(A)
El 50.73(a)(2)(v)(C)
El OTHER El 20.2203(a)(2)(vi)
[E 50.73(a)(2)(i)(B)
El 50.73(a)(2)(v)(D)
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This failure caused an emergency lockout which prevented Keowee Onit I from being able to meet its safety function. The component ID is ONK1ELKBK ACBI.
circuit breaker is a Westinghouse Elec Corp / Hagan model number 150CA1500.
The EPIX report number is 928, dated March 31, 2008.
The The NU
'OURM 366bbA (9-ZUUI)