Who says the Nuclear Regulatory Commission does not have a delightful sense of humor?
Not me. Not anymore. Not after stumbling across the NRC’s Generic Issues Dashboard on its website.
March 26, 2018 6:00 AM EDT
On March 11, 2011, a large earthquake with an epicenter a few miles off the northeastern shores of Japan spawned a tsunami that inundated the Fukushima Daiichi nuclear plant. The earthquake disconnected the plant from the offsite power grid. The tsunami disabled the onsite emergency diesel generators. Deprived of electricity for emergency systems, the reactor cores for Units 1, 2 and 3 overheated and melted down.
On March 12, 2012, the Nuclear Regulatory Committee (NRC) ordered owners of US nuclear power plants to develop and implement mitigation strategies to reduce the vulnerabilities of their facilities to extreme earthquakes and floods. While the specific measures varied from plant to plant, the mitigating strategies generally involved portable pumps, portable generators, cables, hoses, and hauling equipment (called FLEX equipment) and associated procedures for workers to use should permanently installed equipment become disabled.
While the NRC’s order and the industry’s FLEX equipment were intended to reduce vulnerabilities to hazards over and above those deemed credible when the nuclear plants were designed and licensed, Dominion Energy has figured out how to use the new equipment to lessen old risks at its Surry nuclear plant, thus reaping a nuclear safety dividend from its Fukushima investment.
March 8, 2018 12:25 PM EDT
This is the third in a series of commentaries about the vital role nuclear safety inspections conducted by the Nuclear Regulatory Commission (NRC) play in protecting the public. This commentary describes how NRC inspectors discovered inadequate flooding protection at the Vogtle nuclear plant near Waynesboro, Georgia despite a prior warning notice. Read more >
February 8, 2018 6:00 AM EDT
A handful of years ago, there was talk about nearly three dozen new reactors being ordered and built in the United States. During oversight hearings, Members of Congress queried the Members of the Nuclear Regulatory Commission on efforts underway and planned to ensure the agency would be ready to handle this anticipated flood of new reactor applications without impeding progress. Those efforts included creating the Office of New Reactors and hiring new staffers to review the applications and inspect the reactors under construction. Read more >
February 5, 2018 6:00 AM EDT
The Clinton Power Station located 23 miles southeast of Bloomington, Illinois has one General Electric boiling water reactor with a Mark III containment that began operating in 1987.
On December 8, 2013, an electrical fault on a power transformer stopped the flow of electricity to some equipment with the reactor operating near full power. The de-energized equipment caused conditions within the plant to degrade. A few minutes later, the control room operators manually scrammed the reactor per procedures in response to the deteriorating conditions. The NRC dispatched a special inspection team to investigate the cause and its corrective actions.
On December 9, 2017, an electrical fault on a power transformer stopped the flow of electricity to some equipment with the reactor operating near full power. The de-energized equipment caused conditions within the plant to degrade. A few minutes later, the control room operators manually scrammed the reactor per procedures in response to the deteriorating conditions. The NRC dispatched a special inspection team to investigate the cause and its corrective actions. The NRC’s special inspection team issued its report on January 29, 2018.
Same reactor. Same month. Nearly the same day. Same transformer. Same problem. Same outcome. Same NRC response.
Coincidence? Nope. When one does nothing to solve a problem, one invites the problem back. And problems accept the invitations too often. Read more >