Headquarters Daily Report
APRIL 26, 2002
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REPORT NEGATIVE NO INPUT
ATTACHED INPUT RECEIVED RECEIVED
HEADQUARTERS X
REGION I X
REGION II X
REGION III X
REGION IV X
PRIORITY ATTENTION REQUIRED MORNING REPORT - REGION II APRIL 26, 2002
Licensee/Facility: Notification:
Tennessee Valley Authority MR Number: 2-02-0008
Browns Ferry 2 Date: 04/26/02
Decatur,Alabama
Dockets: 50-260
BWR/GE-4
Subject: PERSONNEL CONTAMINATION
Discussion:
On April 25, 2002, at about 8:00 a.m. the licensee informed the NRC that
at about 8:00 p.m. CDST, on April 24, 2002, 54 personnel were identified
with potential intake of radionuclides. The problem occurred during
maintenance activities on Unit 2 to remove reactor vessel internals
during the ongoing refueling outage. The unexpected airborne
radioactivity was released during unlatching of the moisture separators.
The licensee determined that the worst case whole body dose to workers
was about 46 milli/rem and calculated a thyroid dose of approximately 1.5
rem based on the primary isotope contaminants of Iodine131 and 133. The
worst case doses to workers were considerably below the committed whole
body deep dose and thyroid dose limits of 5 rem and 50 rem specified in
10 CFR Part 20.
There were no regulatory limits exceeded and the threshold was not
reached for a required licensee event report. The licensee completed
decontamination procedures and initiated a detailed screening process to
monitor the contaminated workers. The licensee does not plan to initiate
a press release.
NRC Region II Management discussed this event with licensee management on
April 25 and 26. The resident inspectors reviewed licensee actions to
verify that site procedures, Technical Specifications, and regulatory
requirements were met.
Contact: PAUL FREDRICKSON (404)562-4530
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