05000331/LER-2011-001, Nextera Energy Emergency Based Suspension of Safeguards Under Provisions of 10CFR50.54(x)
| ML111810103 | |
| Person / Time | |
|---|---|
| Site: | Duane Arnold  |
| Issue date: | 06/30/2011 |
| From: | Costanzo C NextEra Energy Duane Arnold |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| NG-11-0231 LER 11-001-00 | |
| Download: ML111810103 (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 |
| 3312011001R00 - NRC Website | |
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June 30, 2011 u.s. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-0001 Duane Arnold Energy Center Docket 50-331 License No. DPR-49 Licensee Event Report #2011-001-00
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DUANE ARNOLD NG-11-0231 10 CFR 50.73 Please find attached the subject report submitted in accordance with 10 CFR 50.73. This letter makes no new commitments or changes to any existing
commitments
~{DphJh C~JD Christopher R. Costanzo Vice President, Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC NextEra Energy Duane Arnold, LLC, 3277 DAEC Road, Palo, IA 52324
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NRC FORM 366 (10-2010)
PRINTED ON RECYCLED PAPER NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION (10-2010)
LICENSEE EVENT REPORT (LER)
(See reverse for required number of digits/characters for each block)
APPROVED BY OMB NO. 3150-0104 EXPIRES: 10/31/2013 Estimated burden per response to comply with this mandatory collection request: 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />. Reported lessons learned are incorporated into the licensing process and fed back to industry. Send comments regarding burden estimate to the Records and FOIA/Privacy Service Branch (T-5 F52), U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001, or by internet e-mail to infocollects@nrc.gov, and to the Desk Officer, Office of Information and Regulatory Affairs, NEOB-10202 (3150-0104), Office of Management and Budget, Washington, DC 20503. If a means used to impose an information collection does not display a currently valid OMB control number, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.
- 1. FACILITY NAME Duane Arnold Energy Center
- 2. DOCKET NUMBER 05000331
- 3. PAGE 1 OF 3
- 4. TITLE Emergency Based Suspension of Safeguards Under Provisions of 10CFR50.54(x)
- 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 N/A DOCUMENT NUMBER 05000 05 03 11 2011 001 0
06 30 11 FACILITY NAME N/A DOCUMENT NUMBER 05000
- 9. OPERATING MODE
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply) 20.2201(b) 20.2203(a)(3)(i)
X 50.73(a)(2)(i)(C) 50.73(a)(2)(vii) 1 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)
- 10. POWER LEVEL 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) 100%
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)
VOLUNTARY LER
- 12. LICENSEE CONTACT FOR THIS LER NAME TELEPHONE NUMBER (Include Area Code)
Robert J. Murrell, Engineering Analyst (319) 851-7900 CAUSE SYSTEM COMPONENT MANU-FACTURER REPORTABLE TO EPIX
CAUSE
SYSTEM COMPONENT MANU-FACTURER REPORTABLE TO EPIX A
LJ GBM N/A N
- 14. SUPPLEMENTAL REPORT EXPECTED
- 15. EXPECTED MONTH DAY YEAR YES (If yes, complete 15. EXPECTED SUBMISSION DATE)
X NO SUBMISSION DATE ABSTRACT (Limit to 1400 spaces, i.e., approximately 15 single-spaced typewritten lines)
On May 3, 2011 at 1328, while operating at 100% power, a fire occurred at the sites hydrogen station (IEEE System Code LJ). In response to the fire, the incident commander requested that security personnel evacuate a security post due to the evident safety risk posed by the fire. At 1354 it was determined that there were no adequate or equivalent compensatory measures available, and the request to suspend safeguards was granted by the Operations Shift Manager and the Technical Specification (TS) for License Condition for Physical Protection (safeguards) were deviated from pursuant of 10CFR50.54(x). The decision to suspend safeguards was necessary due to the fact that the security post area was uninhabitable due to life-threatening safety concerns since the security post structure did not provide sufficient protection from the fire. At 1820 the area was declared safe for the security post personnel and they were returned to re-establish the post. The cause of this event was the lack of adequate or equivalent compensatory measures for the security post.
This event is being reported as Deviation from TS under 10CFR50.54(x). Additionally, this event was reported under 10CFR50.72(b)(1), Deviation from TS, reference Event Notification 46813. There were no actual safety consequences and no effect on public health and safety as a result of this event.
(If more space is required, use additional copies of (If more space is required, use additional copies of NRC Form 366A) (17)
PRINTED ON RECYCLED PAPER IV.
Corrective Actions
On May 3, 2011, at 1820 the area was declared safe for the security post personnel and they were returned to re-establish the post.
Follow up corrective actions include developing pre-planned compensatory measures for posts such as the one that was affected by the fire.
V.
Additional Information
Previous Similar Occurrences:
A review of Licensed Event Reports from the past 5 years did not identify any previous similar occurrences.
EIIS System and Component Codes:
LJ - Hydrogen Supply System
Reporting Requirements
This event is being reported as Deviation from TS under 10CFR50.54(x). Additionally, this event was reported under 10CFR50.72(b)(1), Deviation from TS, reference Event Notification 46813.