On June 2, 2015 at 2027
CDT, it was discovered that the unit vent radiation monitor was inoperable beginning on June 1, 2015 at 1026
CDT. Compensatory measures were not taken in accordance with the
Offsite Dose Calculation Manual (
ODCM) during this time period and the radiation monitor was unable to be used to assess Emergency Action Levels in accordance with the
Emergency Plan. On June 3, 2015 it was recognized that because no compensatory measures were implemented during the period of inoperability that the condition resulted in a major loss of emergency assessment capability which is reportable under
10CFR50.72(b)(3)(xiii). Compensatory measures were implemented per the
ODCM upon discovery on June 2 at 2027, thus there is currently no major loss of emergency assessment capability.
This event did not result in any challenges to the fission product barriers and it did not adversely affect the safe operation of the plant or the health and safety of the public.
The NRC Resident Inspector will be notified.
