05000335/LER-2012-006, Regarding Installation Wiring Error in the 1A Auxiliary Feedwater Flow Transmitter

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Regarding Installation Wiring Error in the 1A Auxiliary Feedwater Flow Transmitter
ML12220A003
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 08/02/2012
From: Jensen J
Florida Power & Light Co
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2012-308 LER 12-006-00
Download: ML12220A003 (4)


LER-2012-006, Regarding Installation Wiring Error in the 1A Auxiliary Feedwater Flow Transmitter
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
3352012006R00 - NRC Website

text

August 2, 2012 L-2012-308 10 CFR 50.73 U-S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555 Re:

St. Lucie Unit 1 Docket No. 50-335 Reportable Event: 2012-006 Date of Event: June 5, 2012 Installation Wiring Error in the 1A Auxiliary Feedwater Flow Transmitter The attached Licensee Event Report 2012-006 is being submitted pursuant to the requirements of 10 CFR 50.73 to provide notification of the subject event.

V ytyuly yoy Joseph N Je sen Site Vice PI side SSt.L ucie ants JNJ/rcs Attachment z

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: 10/31/2013

, the NRC may not conduct or sponsor, and a person is not required to respond to, the information collection.

3.

PAGE St. Lucie Unit 1 05000335 1 OF 3

4.

TITLE Installation Wiring Error in the 1A Auxiliary Feedwater Flow Transmitter

5.

EVENT DATE

6.

LER NUMBER

7.

REPORT DATE

8.

OTHER FACILITIES INVOLVED FACILITY NAME DOCKET MONTH DAY YEAR YEAR SEQUENTIA.REV MONTH DAY YEAR NA NUMBER MNH AYYA YERL NUMBER NO.

DCE 06 05 2012 2012 -

006 00 08 02 2 0 1 2 FACILITYNAME NUMBER

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 El 20.2201(d)

El 20.2203(a)(3)(ii)

El 50.73(a)(2)(ii)(A)

[E 50.73(a)(2)(viii)(A)

El 20.2203(a)(1)

El 20.2203(a)(4)

[I 50.73(a)(2)(ii)(B)

E] 50.73(a)(2)(viii)(B)

[] 20.2203(a)(2)(i)

[1 50.36(c)(1)(i)(A)

El 50.73(a)(2)(iii)

El 50.73(a)(2)(ix)(A)

10. POWER LEVEL El 20.2203(a)(2)(ii)

El 50.36(c)(1)(ii)(A)

[E 50.73(a)(2)(iv)(A)

El 50.73(a)(2)(x)

Cl 20.2203(a)(2)(iii)

El 50.36(c)(2)

El 50.73(a)(2)(v)(A)

El 73.71(a)(4) 100%

El 20.2203(a)(2)(iv)

[E 50.46(a)(3)(ii)

El 50.73(a)(2)(v)(B)

El 73.71(a)(5)

El 20.2203(a)(2)(v)

El 50.73(a)(2)(i)(A)

[E 50.73(a)(2)(v)(C)

El OTHER El 20.2203(a)(2)(vi) 0 50.73(a)(2)(i)(B)

El 50.73(a)(2)(v)(D)

Specify in Abstract below or in

Corrective Actions

The corrective actions listed below are entered into the site

corrective action

program.

Any changes to the actions will be managed under the corrective action program.

1. The wiring was corrected and tested to return the flow transmitter to operable status on June 5, 2012 at 2100 EDT.
2.

The Station will revise the post-maintenance test procedure to strengthen the guidance for the requirements and instructions for performing channel functional testing.

3.

The Station will revise the vendor tech manual drawing for installation of these square root extractors to ensure end users refer to Detail A for guidance on landing leads to the correct terminals.

Similar Events

A similar event was identified and corrected in March 2009 when PMT and subsequent troubleshooting identified that a newly installed square root extractor was wired incorrectly.

However, this information was not captured in a condition report or as internal operating experience.

Failed Component(s)

Rochester Instrument Systems model SC-1330 square root extractor Manufacturer Rochester Instrument Systems SSION