05000389/LER-2010-001, Regarding Control Room Habitability Impacted by General Atomics Model RM-80 Radiation Monitoring System Firmware Anomaly
| ML100750245 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 03/08/2010 |
| From: | Richard Anderson Florida Power & Light Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-2010-034 LER 10-001-00 | |
| Download: ML100750245 (5) | |
| 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 |
| 3892010001R00 - NRC Website | |
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IFPL Florida Power & Light Company, 6501 S. Ocean Drive, Jensen Beach, FL 34957 March 8, 2010 L-2010-034 10 CFR 50.73 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Re:
St. Lucie Unit 2 Docket No. 50-389 Reportable Event: 2010-001 Date of Event: January 06, 2010 Control Room Habitability Impacted by General Atomics Model RM-80 Radiation Monitoring System Firmware Anomaly The attached Licensee Event Report 2010-001 is being submitted pursuant to the requirements of 10 CFR 50.73 to provide notification of the subject event.
- Ver, uly yours, Richa.L.
ders Site ice esidernt St. Lu Plant RLA/dlc Attachment V
an FPL Group company
I - ý-
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 08/31/201
',9-2007)
Estimated burden per response to comply with this mandatory collection request: 50 hours5.787037e-4 days <br />0.0139 hours <br />8.267196e-5 weeks <br />1.9025e-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 LICENSEE EVENT REPORT (LER)
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.
- 3. PAGE St. Lucie Unit 2 05000389 1
OF 4
- 4. TITLE Control Room Habitability Impacted by General Atomics Model RM-80 Radiation Monitoring Svsu~tem Fi rmware Anomalv
- 5. EVENT DATE
- 6. LER NUMBER
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED TEUNTA RVFACILITY NAME DOCKET NUMBER MONTH DAY YEAR YEAR SEQUENTIAL REV MONTH DAY YEAR I
~NUMBER NO.
_I_
FACILITY NAME DOCKET NUMBER-01 06 2010 2010 -
001 00 03 08 2010
- 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) 1 [1 20.2201(d)
El 20.2203(a)(3)(ii)
El 50.73(a)(2)(ii)(A)
El 50.73(a)(2)(viii)(A)
E-20.2203(a)(1)
[I 20.2203(a)(4)
El 50.73(a)(2)(ii)(B)
El 50.73(a)(2)(viii)(B)
[I 20.2203(a)(2)(i)
El 50.36(c)(1)(i)(A)
[I 50.73(a)(2)(iii)
[I 50.73(a)(2)(ix)(A)
- 10. POWER LEVEL [1 20.2203(a)(2)(ii)
[] 50.36(c)(1)(ii)(A)
El 50.73(a)(2)(iv)(A)
El 50.73(a)(2)(x)
El 20.2203(a)(2)(iii)
El 50.36(c)(2)
El 50.73(a)(2)(v)(A)
El 73.71(a)(4)
El 20.2203(a)(2)(iv)
[E 50.46(a)(3)(ii)
El 50.73(a)(2)(v)(B)
El 73.71(a)(5) 100%
El 20.2203(a)(2)(v)
El 50.73(a)(2)(i)(A)
[E 50.73(a)(2)(v)(C)
E] OTHER El 20.2203(a)(2)(vi)
El 50.73(a)(2)(i)(B) 0 50.73(a)(2)(v)(D)
Specify in Abstract below or in Analysis of Safety Significance This is a legacy issue.
RIM-26-61, RIM-26-62, RIM-26-65, and RIM-26-66 were modified via MSP 09097, Revision 1 to correct the firmware anomaly.
For the period in question (between September 3, 2006 and June 29, 2009) operators would have been able to recognize the failure of the HVE-13A and HVE-13B fans to automatically start.
Emergency Operating Procedure 2-EOP-04, "Steam Generator Tube Rupture," provides guidance for coping with a SGTR with a concurrent LOOP.
Emergency Operating Procedure 2-EOP-04 requires operators to ensure that proper actuation of engineered safety features actuation system (ESFAS) components has occurred.
The delayed manual initiation of HVE-13A and/or HVE-13B would have permitted the operators to establish control room habitability to permit successful event termination after receiving a dose judged to marginally exceed 5 rem TEDE.
Corrective Actions Taken The corrective and supporting actions are entered into the site correction action program (CAP).
Any changes to the proposed actions will be managed under the CAP.
Immediate Corrective Actions Taken
- 1. Notified General Atomics of RM-80 anomaly.
- 2.
Updated firmware was successfully installed and tested on all four CROAI radiation monitoring channels.
- 3.
Extent of condition review was performed and determined no immediate operability concerns existed for the other safety-related or Technical Specification monitors.
Corrective Actions
- 1. Created Work Order 39016634-01 to track and verify installation of the RM-80 firmware versions.
- 2.
Perform a human factors evaluation to address the loss of annunciation functions for RM-26-11 and RM-45-1.
If the functionality of the local alert lights, local high radiation lights, or local alarm horns is affected, then an evaluation will be performed; and if warranted, a firmware modification will be obtained from General Atomics.
Similar Events
A search of the corrective action database for St. Lucie was performed to identify events related to General Atomics Model RM-80 Radiation Monitoring System and none were found.
This event is not considered a repeat event.
Failed Components General Atomics Electronic Systems, Inc. radiation monitoring system Model RM-80 firmware.
GA-ESI assembly firmware number: SID136.02.
Affected plant tag numbers:
RIM-26-61, RIM-26-62, RIM-26-65, and RIM-26-66.