L-2007-166, Technical Specification Special Report, Radiation Monitoring Inoperable Greater than 72 Hours

Technical Specification Special Report, Radiation Monitoring Inoperable Greater than 72 Hours

ML072980712
Person / Time
Site:	Saint Lucie
Issue date:	10/18/2007
From:	Johnston G Florida Power & Light Co
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
L-2007-166
Download: ML072980712 (3)

Text

0 Florida Power & Light Company, 6501 S. Ocean Drive, Jensen Beach, FL 34957 October 18, 2007 FPL L-2007-166 10 CFR 50.36 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 Re: St. Lucie Unit 1 Docket No. 50-335 Date of Event: October 4, 2007 Technical Specification Special Report Radiation Monitoring Inoperable Greater Than 72 Hours The attached special report is being submitted pursuant to the requirements of St. Lucie Unit 1 Technical Specification 3.3.3.1, Action b, and Technical Specification 6.9.2. This report provides notification that the Steam Generator Blowdown Treatment Facility Building Exhaust Radiation Monitoring system was inoperable for greater than 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> due to inaccessibility of the radiation monitors.

Alternate means of radiation monitoring were implemented in accordance with the Technical Specification ACTION statement.

Please contact us if there any questions on this information.

Very tr ly yours, Gordon L. Johnston Site Vice President St. Lucie Plant GLJ/KWF an FPL Group company AJ 1~

St. Lucie Unit 1 L-2007-166 Docket No. 50-335 Attachment Page 1 of2 I. TITLE Steam Generator Blowdown Treatment Facility Building Exhaust Radiation Monitoring System Inoperable Greater Than 72 Hours.

II. EVENT DESCRIPTION On October 4, 2007, St. Lucie Unit I was in Mode 1 at 100% power. The stairwell providing emergency ingress/egress to the steam generator blowdown treatment facility building exhaust radiation monitoring system was declared unusable. This action rendered the radiation monitors inaccessible to the operators for the required Technical Specification shiftly channel check surveillances, so the steam generator blowdown treatment facility building exhaust radiation monitoring system was declared inoperable. The Limiting Condition for Operation (LCO) for TS 3.3.3.1, Radiation Monitoring, states that:

"The radiation monitoring instrumentation channels shown in Table 3.3-6 shall be OPERABLE with their alarm setpoints within the specified limits.

"With the number of channels OPERABLE less than required by the Minimum Channels OPERABLE requirement, either restore the inoperable Channel(s) to OPERABLE status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, or:

Initiate the preplanned alternate method of monitoring the appropriate parameter(s), and Prepare and submit a Special Report to the Commission pursuant to Specification 6.9.2 within 14 days following the event outlining the action taken, the cause of the inoperability and the plans and schedule for restoring the system to operable status."

On October 7, 2007, access to the steam generator blowdown treatment facility building exhaust radiation monitoring system had not been restored, and the 72-hour time period to restore the subject radiation monitor to operable status expired.

III. CAUSE OF THE EVENT Operators were unable to perform the required Technical Specification shiftly channel checks due to the inaccessibility of the radiation monitors.

St. Lucie Unit 1 L-2007-166 Docket No. 50-335 Attachment Page 2 of 2 IV. ACTIONS TAKEN Short Term:

Alternate monitoring was implemented in accordance with TS 3.3.3.1, ACTION Statement 15.

Long Term:

St. Lucie is pursuing alternate means for providing emergency ingress/egress to the steam generator blowdown treatment facility building exhaust radiation monitors to allow resumption of the shiftly channel checks.

V. SCHEDULE FOR RESTORING SYSTEM Access to the steam generator blowdown treatment facility building exhaust radiation monitors will be restored by October 27, 2007.