After a high pressure coolant injection discharge valve failed, a special inspection will end up launched for Unit 3 of Browns Ferry Nuclear Plant in Athens, AL, federal officials said.
The Nuclear Regulatory Commission (NRC) said in a written statement it will inspect the failure of a high-pressure coolant injection discharge valve on Unit 3.
During routine testing Sept. 24, the high-pressure coolant injection system unexpectedly pumped water into the reactor vessel instead of a storage tank, and the Tennessee Valley Authority, which operates the facility, determined a failed nut on a valve allowed it to remain partially open, according to the NRC.
The NRC said the inspection team will review the valve failure and TVA’s actions as well as maintenance practices and the history of such valves.
The onsite portion of the inspection is expected to take several days, the NRC said, and a report documenting the results of the inspection should be issued within 45 days of the completion of the inspection.