Nuclear Power Safety

The probability of a nuclear accident is small but the consequences can be catastrophic. Our experts analyze nuclear safety issues from the past and present, making recommendations for a safer nuclear fleet.


Subscribe to our Nuclear Power Safety feed

Latest Nuclear Power Safety Posts

NRC’s Decision Making: 18 Reasons Why You Are Right, but Wrong

, director, Nuclear Safety Project

As described in a prior blog post, the Unit 3 reactor at the Palo Verde Generating Station had one of two emergency diesel generators (EDGs) explode during a test run. The license issued by the Nuclear Regulatory Commission (NRC) allowed the reactor to remain running for up to 10 days with one EDG unavailable. Fixing the heavily damaged EDG would require far longer than 10 days, so the plant’s owner submitted requests to the NRC for its permission to run the reactor for up to 21 days and then up to 62 days with only one EDG available. Read more >

Bookmark and Share

Marijuana and Nuclear Power Plants

, director, Nuclear Safety Project

The Nuclear Regulatory Commission (NRC) adopted regulations in the mid-1980s seeking to ensure that nuclear power plant workers are fit for duty. The NRC’s regulations contained provisions seeking to verify that workers were trustworthy and reliable as well as measures intended to prevent workers from being impaired on duty. The former measures included background checks before workers could gain access to the plant while the latter components included drug and alcohol testing. Read more >

Bookmark and Share

Nuclear Plant Cyber Security

, director, Nuclear Safety Project

There has been considerable media coverage recently about alleged hacking into computer systems at or for U.S. nuclear power plants. The good news is that the Nuclear Regulatory Commission (NRC) and the nuclear industry are not merely reacting to this news and playing catch-up to the cyber threat. The NRC included cyber security protective measures among the regulatory requirements it imposed on the nuclear industry in the wake of 9/11. The hacking reported to date seems to have involved non-critical systems at nuclear plants as explained below.

The bad news is that there are bad people out there trying to do bad things to good people. We are better protected against cyber attacks than we were 15 years ago, but are not invulnerable to them. Read more >

Bookmark and Share

Cooper: Nuclear Plant Operated 89 Days with Key Safety System Impaired

, director, Nuclear Safety Project

The Nebraska Public Power District’s Cooper Nuclear Station about 23 miles south of Nebraska City has one boiling water reactor that began operating in the mid-1970s to add about 800 megawatts of electricity to the power grid. Workers shut down the reactor on September 24, 2016, to enter a scheduled refueling outage. That process eventually led to NRC special inspections. Read more >

Bookmark and Share

Turkey Point: Fire and Explosion at the Nuclear Plant

, director, Nuclear Safety Project

The Florida Power & Light Company’s Turkey Point Nuclear Generating Station about 20 miles south of Miami has two Westinghouse pressurized water reactors that began operating in the early 1970s. Built next to two fossil-fired generating units, Units 3 and 4 each add about 875 megawatts of nuclear-generated electricity to the power grid.

Both reactors hummed along at full power on the morning of Saturday, March 18, 2017, when problems arose. Read more >

Bookmark and Share