L-2014-139, Special Report Regarding Accident Monitoring Instrumentation

Special Report Regarding Accident Monitoring Instrumentation

ML14163A005
Person / Time
Site:	Turkey Point
Issue date:	05/14/2014
From:	Kiley M Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2014-139
Download: ML14163A005 (3)

Text

0FPL.

May 14, 2014 L-2014-139 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555-001 Re: Turkey Point Unit 3 Docket No. 50-250 Special Report - Accident Monitoring Instrumentation In accordance with Technical Specifications 6.9.2 and 3.3.3.3, the attached Special Report is provided for your information.

Should there be any questions regarding this information, please contact Robert J. Tomonto, Licensing Manager at (305) 246-7327.

Sincerely, Michael Kiley Vice President Turkey Point Nuclear Plant SM cc:

Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, Turkey Point Plant Florida Power & Light Company 9760 S.W. 344t" Street Homestead, FL 33035

L-2014-139 Page 2 of 3 SPECIAL REPORT

Purpose:

This special report is being submitted pursuant to the requirements of Turkey Point Unit 3 Technical Specification (TS) 3.3.3.3, Table 3.3-5, Accident Monitoring Instrumentation, Instrument 19.c, Action 34, part 2) due to the Condenser Air Ejector for High Range-Noble Gas Effluent Monitor (RAD-3-6417) being inoperable for greater than 7 days.

Required Action 34 of TS 3.3.3.3, Table 3.3-5 states:

"With the number of OPERABLE Channels less than required by the Minimum Channels OPERABLE requirements, initiate the preplanned alternate method of monitoring the appropriate parameter(s), within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and:

1)

Either restore the inoperable channel(s) to OPERABLE status within 7 days of the event, or

2)

Prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2 within the next 14 days outlining the action taken, the cause of the inoperability, and the plans and schedule for restoring the system to OPERABLE status."

This Special Report is being transmitted in accordance with these requirements.

Event and Action Taken:

RAD-3-6417 consists of three channels with the following ranges to cover the total range required (1.0 E-06 to 1.0 E05 pCi/cc):

High Range Channel 9:

1.0 EO0 to 1.0 E+05 pCi/cc Mid Range Channel 7:

2.5 E-02 to 4.0 E+02 pCi/cc Low Range Channel 5:

1.0 E-07 to 6.0 E-02 pCi/cc On April 27, 2014 Turkey Point Unit 3 was in Mode 1, approximately 47% power, and returning to power from the Unit 3, Cycle 27 Refueling Outage. At 1513, the Condenser Steam Jet Air Ejector Hogging Jet was placed in service to maintain condenser vacuum. With the Hogging Jets in service, plant conditions do not support the sample flow rate required to allow the High Range-Noble Gas Effluent Monitor (RAD-3-6417) to be inservice, and as such, monitor RAD 6417 was rendered inoperable.

In accordance with TS 3.3.3.3, Table 3.3-5, Instrument 19.c, the Condenser Air Ejector Noble Gas Effluent Monitor is required to be OPERABLE for Modes 1-3. Since RAD-3-6417 was not restored to service within 7 days (by May 4, 2014) as required by TS 3.3.3.3, Table 3.3-5, Action 34, this special report is prepared and submitted within the next 14 days to comply with the TS Action 34 requirements.

L-2014-139 Page 3 of 3 The pre-planned alternate method of monitoring the appropriate parameters was established on April 27, 2014. The method utilized was grab samples, once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from the steam generators to perform isotopic activity analysis.

Cause:

The sample flow path was bypassed by the plant lineup required to maintain condenser vacuum by the hogging jet air ejector, rendering monitor RAD-3-6417 inoperable.

Schedule for Restoration:

A failure investigation is ongoing at this time. This condition has been entered in the station's corrective action program. The condition is being evaluated for correcting the low condenser vacuum and returning RAD-3-6417 to service.