Event Notification Report for May 07, 2012

AGREEMENT STATE REPORT - LOST TRITIUM SIGNS

The following information was received by facsimile:

"A biannual tritium sign inspection during the week of 5/7/2012 disclosed four tritium signs had been removed during a renovation of Mendocine Hall during the third week of January 2012 by the contractor. All attempts to locate the signs have been exhausted.

"The missing signs are as follows:

Serial # 263374 Model # BX1711OWHSGN 7.5 curies
Serial # 263373 Model # BX1711OWHSGN 7.5 curies
Serial # 263387 Model # BX1711OWHSGN 7.5 curies
Serial # 263388 Model # BX1711OWHSGN 7.5 curies

"Date of manufacture for all signs is 5/2/2004."

California 5010 Number: 060712

THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL

Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf

This source is not amongst those sources or devices identified by the IAEA Code of Conduct for the Safety & Security of Radioactive Sources to be of concern from a radiological standpoint. Therefore is it being categorized as a less than Category 3 source

INADVERTENT EMERGENCY SIREN ACTUATION

"This event is being reported in accordance with 10 CFR 50.72(b)(2)(xi). On May 7, 2012, at approximately 1233 hours [EDT], an inadvertent actuation of the Perry Nuclear Power Plant's alert notification system occurred. Twenty of the seventy-six total sirens sounded for three minutes affecting Ashtabula, Geauga, and Lake Counties. Following the actuation the county agencies received calls from members of the public.

"A successful quiet test of the sirens had been conducted earlier in the day (at approximately 0830 hours [EDT]). At this time, all sirens are functioning correctly. The siren actuation was not related to any condition or event at the Perry Nuclear Power Plant. The actuation signal originated from the Lake County Emergency Operations Center while thunderstorms were passing through the area. Additional investigation is in progress to determine the cause of the inadvertent actuation. At the time of the event, the plant was in Mode 1 at 100 percent rated thermal power.

"Lake County officials plant to issue a press release.

"The NRC Resident Inspector has been notified."

TONE ALERT RADIO SYSTEM OUTAGE

"At approximately 1239 CDT on 5/7/2012, Cooper Nuclear Station was informed by the National Weather Service that the Shubert radio transmission tower was not working. This affected the tone alert radios Cooper Nuclear Station provides to members of the public to notify them of an emergency condition. This is considered to be a major loss of the Public Prompt Notification System capability, and is reportable under 10 CFR 50.72(b)(3)(xiii).

"Local county authorities within the 10 mile EPZ have been notified of the condition of the tower and the affect on the tone alert radios and will utilize Local Route Notification (backup notification method).

"At approximately 1356 [CDT], the National Weather Service reported that the Shubert radio transmission tower had been restored to service."

The licensee notified the NRC Resident Inspector.

VIOLATION OF FITNESS FOR DUTY PROGRAM

A non-licensed contractor employee supervisor was found in violation of the Fitness for Duty Program. The individual's access to the plant has been terminated. Contact the Headquarters Operations Officer for additional details.

PRESSURE BOUNDARY LEAKAGE

"On May 7, 2012, at 2357 CDT, with the plant in MODE 3 at normal operating temperature and pressure, leakage from a transmitter manifold test valve diaphragm seal was determined to be pressure boundary leakage per TS 3.4.13. The manifold test valve is associated with pressurizer pressure transmitter PT-430. It has been determined that the most likely cause of the leakage is a cracked manifold diaphragm and that this is classified as part of the Reactor Coolant System Pressure Boundary per 10 CFR 50.2.

"This condition is being reported under 10 CFR 50.72(b)(3)(ii)(A) because the defect is associated with the Reactor Coolant Pressure Boundary.

"Isolation and repair of the leakage is being pursued.

"The licensee has notified the NRC Resident Inspector."

The licensee closed the root isolation valves for the pressure transmitter to allow repair of the diaphragm, however there is still leakage past these valve. This leakage is quantified as a few drops per minute.


* * * RETRACTION FROM MIKE TERRY TO DONALD NORWOOD AT 1552 EDT ON 5/8/2012 * * *

"On May 8, 2012, EN #47905 provided notification of leakage from a pressurizer manifold valve that was potentially pressure boundary leakage. Since the leak could not quickly be determined to be otherwise, it was conservatively reported as pressure boundary leakage.

"Subsequent investigation and evaluation determined that the identified leakage originated from the mechanical components of the valve and not the pressure boundary.

"The leak has been isolated and the affected manifold valve is being repaired.

"Therefore, the leakage did not constitute pressure boundary leakage and this condition did not meet the reportability criteria identified in 10CFR50.72.

"As a result, the notification made on May 8, 2012 is hereby retracted.

"The NRC Resident Inspector has been notified."

Notified R3DO (Giessner).

CONTAMINATED INJURED PERSON

"An employee received a laceration on the bridge of his nose when removing a respirator. He went into the onsite medical dispensary where the nurse cleaned the wound and applied a bandage. The employee had been working in the Feed Materials Building. He was donning PPE [Protective Personal Equipment] in the cooling shack on the 6th floor. There was approximately 33,000 dpm/100cm? contamination on the bottom of the employee's plant issued shoes. The employee returned to work following the treatment."

The licensee notified the Senior NRC Inspector.