05000389/LER-2014-002, Regarding Shutdown Due to Spurious Closure of Main Feed Isolation Valve (Mfiv)
| ML15035A059 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 01/12/2015 |
| From: | Jensen J Florida Power & Light Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-2015-014 LER 14-002-00 | |
| Download: ML15035A059 (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 |
| 3892014002R00 - NRC Website | |
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0FPL.
January 12, 2015 L-2015-014 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: 2014-002 Date of Event: November 12, 2014 Unit 2 Shutdown Due to Spurious Closure of Main Feed Isolation Valve (MFIV)
The attached Licensee Event Report 2014-002 is being submitted pursuant to the requirements of 10 CFR 50.73 to provide notification of the subject event.
Respectfully,
- - J'oeph Jensen Site Vice President St. Lucie Plant JJ/dlc Attachment Florida Power & Light Company 6501 S. Ocean Drive, Jensen Beach, FL 34957
NRC FORM 366 U.S. NUCLEAR REGULATORY COMMISSION APPROVED BY OMB: NO. 3150-0104 EXPIRES: 01/31/2017 (02-2014)
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 FOIA, Privacy and Information Collections Branch (T-5 F53). U S. Nuclear Regulatory Commission, Washington, DC 20555-0001. or by LICENSEE EVENT REPORT (LER) internet e-mail to Infocollects.Resource@nrc.gov, and to the Desk Officer, Office of Information and (See Page 2 for required number of Regulatory Affairs, NEOB-10202, (3150-0104), Office of Management and Budget. Washington, DC digits/characters for each block) 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 3
- 4. TITLE Unit 2 Shutdown Due to Spurious Closure of Main Feed Isolation Valve(MFIV)
- 5. EVENT DATE
- 6. LER NUMBER J
- 7. REPORT DATE
- 8. OTHER FACILITIES INVOLVED MONTH DAY YEAR SEQUENTIAL REV7 7FFACILITY NAME DOCKET NUMBER NUMBER NO MONTH DAY YEAR FACILITY NAME DOCKET NUMBER 11 12 2014 2014 -002
- - 00 01 12 2015
- 9. OPERATING MODE
- 11. THIS REPORT IS SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Check all that apply)
El 20.2201(b)
[
20.2203(a)(3)(i)
[]
50.73(a)(2)(i)(C)
[_
50.73(a)(2)(vii)
El 20.2201(d) 20.2203(a)(3)(ii)
El 50.73(a)(2)(ii)(A)
El 50.73(a)(2)(viii)(A)
[1 20.2203(a)(1)
El 20.2203(a)(4)
[:
50.73(a)(2)(ii)(B)
El 50.73(a)(2)(viii)(B)
E] 20.2203(a)(2)(i)
El 50.36(c)(1)(i)(A)
El 50.73(a)(2)(iii)
El 50.73(a)(2)(ix)(A)
- 10. POWER LEVEL 20.2203(a)(2)(ii)
[1 50.36(c)(1)(ii)(A)
Z 50.73(a)(2)(iv)(A)
[I 50.73(a)(2)(x) 20.2203(a)(2)(iii)
El 50.36(c)(2)
El 50.73(a)(2)(v)(A)
El 73.71(a)(4) 100 20.2203(a)(2)(iv)
El 50.46(a)(3)(ii)
El 50.73(a)(2)(v)(B)
El 73.71(a)(5) 10 20.2203(a)(2)(v)
Z 50.73(a)(2)(i)(A)
El 50.73(a)(2)(v)(C)
El OTHER 20.2203(a)(2)(vi)
[J 50.73(a)(2)(i)(B)
El 50.73(a)(2)(v)(D) specify in Abstract below or in 12.__
Similar Events
An operating experience search was performed using the INPO website relevant to this event: water intrusion to plant trip.
The relevant OEs were reviewed for industry corrective action, none of which were related to an MFIV event.
The industry corrective actions were reviewed for potential applicability to the HCV-09-2B spurious closure event.
The main theme presented in the industry corrective actions was to identify and correct the source of water intrusion.
A similar event review is in progress and will be included in the LER Supplement upon completion of the root cause evaluation.
Failed Component(s)
Model No.
12HFAI51A2H -
HFA Relay Manufacturer: General Electric