05000368/LER-2008-001, Unit 2 Regarding Containment Isolation Value Inoperable Longer than Allowed by Technical Specifications as a Result of Personnel Error During Planning and Construction of Scaffolding
| ML081300373 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/08/2008 |
| From: | James D Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 2CAN050801 LER 08-001-00 | |
| Download: ML081300373 (7) | |
| Event date: | |
|---|---|
| Report date: | |
| Reporting criterion: | 10 CFR 50.73(a)(2)(i)(B), Prohibited by Technical Specifications 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 |
| 3682008001R00 - NRC Website | |
text
2CAN050801 May 8, 2008 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555-0001
Subject:
Licensee Event Report 50-368/2008-001-00 Arkansas Nuclear One - Unit 2 Docket No. 50-368 License No. NFP-6
Dear Sir or Madam:
In accordance with 10CFR50.73(a)(2)(i)(B), enclosed is the subject report concerning operation prohibited by Technical Specifications.
Commitments contained in this submittal are documented in the attachment.
Sincerely, DEJ/rs Enclosure Dale E. James Manager, Licensing - ANO Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802 Tel 479-858-4619
2CAN050801 Page 2 cc:
Elmo Collins Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 Institute of Nuclear Power Operations 700 Galleria Parkway Atlanta, GA 30339-5957 LEREvents@inpo.org
NRC FORM 366 (6-2004)
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (6-2004)
LICENSEE EVENT REPORT (LER)
(See reverse for required number of digits/characters for each block)
APPROVED BY OMB: NO. 3150-0104 EXPIRES: 06/30/2007
, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
- 1. FACILITY NAME Arkansas Nuclear One - Unit 2
- 2. DOCKET NUMBER 05000368
- 3. PAGE 1 of 3
- 4. TITLE Containment Isolation Valve Inoperable Longer Than Allowed by Technical Specifications as a Result of Personnel Error During Planning and Construction of Scaffolding
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR YEAR SEQUENTIAL NUMBER REV NO.
MONTH DAY YEAR FACILITY NAME DOCKET NUMBER 05000 3
13 2008 2008 - 001 - 00 5
8 2008 FACILITY NAME DOCKET NUMBER 05000
- 9. OPERATING MODE 1
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR§: (Check all that apply) 20.2201(b) 20.2203(a)(3)(i) 50.73(a)(2)(i)(C) 50.73(a)(2)(vii) 20.2201(d) 20.2203(a)(3)(ii) 50.73(a)(2)(ii)(A) 50.73(a)(2)(viii)(A) 20.2203(a)(1) 20.2203(a)(4) 50.73(a)(2)(ii)(B) 50.73(a)(2)(viii)(B) 20.2203(a)(2)(i) 50.36(c)(1)(i)(A) 50.73(a)(2)(iii) 50.73(a)(2)(ix)(A) 20.2203(a)(2)(ii) 50.36(c)(1)(ii)(A) 50.73(a)(2)(iv)(A) 50.73(a)(2)(x) 20.2203(a)(2)(iii) 50.36(c)(2) 50.73(a)(2)(v)(A) 73.71(a)(4) 20.2203(a)(2)(iv) 50.46(a)(3)(ii) 50.73(a)(2)(v)(B) 73.71(a)(5) 20.2203(a)(2)(v) 50.73(a)(2)(i)(A) 50.73(a)(2)(v)(C)
OTHER 20.2203(a)(2)(vi) 50.73(a)(2)(i)(B) 50.73(a)(2)(v)(D)
Specify in Abstract below or in (If more space is required, use additional copies of (If more space is required, use additional copies of NRC Form 366A)
E.
Safety Significance
Considering that this condition existed for a short period of time and the fact that the redundant containment isolation valve remained operable during this time, the significance of this event is considered to be minimal.
F.
Basis for Reportability ANO-2 Technical Specification 3.6.3.1 requires that each containment isolation valve be operable in Modes 1, 2, 3, and 4. If unable to restore an inoperable containment isolation valve to operable status or isolate the affected penetration within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />, the specification requires that the plant be taken to Hot Standby within the following 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and to Cold Shutdown within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.
The scaffold was constructed on March 13, 2008, while the plant was in Mode 1 at 100 percent power. The plant was shutdown for Refueling Outage 2R19 on March 16, 2008, and entered Mode 5 at 1503 on that date, at which time containment integrity was no longer required. Since the subject containment isolation valve was inoperable for a period of time longer than allowed by the Technical Specifications, this event is reportable pursuant to 10CFR50.73(a)(2)(i)(B) as operation prohibited by Technical Specifications.
G.
Additional Information
There have been no previous similar events reported by ANO.
Energy Industry Identification System (EIIS) codes are identified in the text as [XX].
Attachment 2CAN050801 List of Regulatory Commitments to 2CAN050801 Page 1 of 1 List of Regulatory Commitments The following table identifies those actions committed to by Entergy in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
TYPE (Check One)
COMMITMENT
ONE TIME ACTION CONTINUING COMPLIANCE SCHEDULED COMPLETION DATE (If Required)
Conduct a lessons learned discussion with the Operations staff of both ANO units regarding this event to stress the importance of walkdowns with scaffolding personnel in identifying all potential interference issues.
X 6/30/2008