05000400/LER-2011-001, Regarding Containment Vacuum Relief System Inoperable for Greater than Time Allowed by Technical Specification
| ML11172A123 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 06/13/2011 |
| From: | Kapopoulos E Progress Energy Carolinas |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| HNP-11-057 LER 11-001-00 | |
| Download: ML11172A123 (4) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 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 |
| 4002011001R00 - NRC Website | |
text
Progress Energy Serial:
10 CFR 50.73 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 JUN..1 3 2011 SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 DOCKET NO. 50-400/RENEWED LICENSE NO. NPF-63 LICENSEE EVENT REPORT 2011-001-00 Ladies and Gentlemen:
The enclosed Licensee Event Report (LER) 2011-001-00 is submitted in accordance with 10 CFR 50.73, paragraph (a)(2)(i)(B) as an event that resulted in a condition prohibited by plant Technical Specifications. This report describes an event in which a failed safety-related tornado damper caused the Containment Vacuum Relief system to be inoperable. In accordance with 10 CFR 50.73(a) requirements, this LER is submitted within 60 days following discovery of the event.
This document contains no Regulatory Commitments.
Please refer any questions regarding this submittal to Mr. Dave Corlett, Supervisor -
Licensing/Regulatory Programs, at (919) 362-3137.
Sincerely, Ernest J. Kapopoulos, Jr.
Plant General Manager Harris Nuclear Plant EJK/kab Enclosure cc:
Mr. J. D. Austin, NRC Senior Resident Inspector, HINP Mr. V. M. McCree, NRC Regional Administrator, Region II Mrs. B. L. Mozafari, NRC Project Manager, HNP Progress Energy Carolinas, Inc.
Harris Nuclear Plant P. 0. Box 165 New Hill, NC 27562
~A~L
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 10/31/2013 (10-2010)
, the NRC may digits/characters for each block) not conduct or sponsor, and a person is not required to respond to, the information collection.
- 3. PAGE Harris Nuclear Plant-Unit 1 05000 0400 1
OF
- 4. TITLE Containment Vacuum Relief System Inoperable for Greater Than Time Allowed by Technical Specification
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED SEQUENTIAL REV FACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR NUMBER NO.
MONTH DAY YEAR N/A 05000 FACILITY NAME DOCKET NUMBER 04 12 11 2011 001 00 6
13 11 N/A 05000
- 9. OPERATING MODE
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply) 5 20.2201(b)
[]
20.2203(a)(3)(i)
E] 50.73(a)(2)(i)(C)
[]
50.73(a)(2)(vii) 1E 20.2201(d) 5 20.2203(a)(3)(ii)
E] 50.73(a)(2)(ii)(A) 5] 50.73(a)(2)(viii)(A)
E] 20.2203(a)(1) 5 20.2203(a)(4) 5 50.73(a)(2)(ii)(B)
E] 50.73(a)(2)(viii)(B)
[]
20.2203(a)(2)(i) 5 50.36(c)(1)(i)(A) 5 50.73(a)(2)(iii) 5 50.73(a)(2)(ix)(A)
- 10. POWER LEVEL El 20.2203(a)(2)(ii)
I]
50.36(c)(1)(ii)(A)
I]
50.73(a)(2)(iv)(A) 5 50.73(a)(2)(x) 5 20.2203(a)(2)(iii) 5 50.36(c)(2) r-50.73(a)(2)(v)(A)
E] 73.71(a)(4) 20.2203(a)(2)(iv)
E] 50.46(a)(3)(ii)
[]
50.73(a)(2)(v)(B)
[] 73.71(a)(5) 100 %
5 20.2203(a)(2)(v) 5 50.73(a)(2)(i)(A)
El 50.73(a)(2)(v)(C) 5 OTHER
[= 20.2203(a)(2)(vi)
[
50.73(a)(2)(i)(B)
El 50.73(a)(2)(v)(D)
Specify in Abstract below or in
PREVIOUS SIMILAR EVENTS
There are no previous similar events at Harris Nuclear Plant.
IMMEDIATE CORRECTIVE ACTION
Corrective maintenance was performed and post-maintenance testing on CB-Z2SN was completed at approximately 3:37 AM on April 13, 2011, and the "B" Train Containment Vacuum Relief system was declared operable. The other tornado dampers have been inspected and repaired as needed. Inspections and repairs were completed by April 19, 2011.
CORRECTIVE ACTIONS
The planned corrective action to prevent recurrence is to establish a new procedure just for tornado damper maintenance and testing. The new written procedure will include step-by-step instructions for re-validating counterweight set-up and performing functional testing per technical manual VM-NFZ, "Tornado Protection Dampers," and will clearly document "as found" and "as left" conditions, clearly document that no binding exists with independent verification, and include sign-offs at a minimum. Blade seal replacement will also be included in the new procedure.