NRC Blog Update: Getting Ready for Winter Looks Much Like Preparing for Hurricanes

Getting Ready for Winter Looks Much Like Preparing for Hurricanes

3 Comments Posted by Moderator on January 3, 2017

Neil Sheehan
Public Affairs Officer
Region I
At first glance the blizzard that pounded the upper Midwest on Christmas weekend – or the winter storm that hit New England over New Year’s — doesn’t seem to have much in common with the hurricanes that hit the Gulf Coast or Eastern Seaboard during the hot summer months.
But from our perspective, they do.
NRC regulations requires that U.S. nuclear power plants be ready for all kinds of weather conditions, and that extends to winter storms.
The preparations take many forms. Here are some of the key activities:

• Plant operators keep close tabs on approaching storms via weather forecasting services. Storm watches or warnings would clearly attract attention.
• As a storm draws closer, information gathered from the facility’s meteorological towers is assessed. These data points would include wind speed/direction and snowfall rates. Specific conditions, such as wind speeds exceeding a pre-designated threshold, can result in operators starting to shut down the reactor, or reactors, at a plant site.
• Prior to a storm arriving in the area, plant personnel would conduct visual inspections of plant grounds. They would check that there were no loose items that could be propelled by strong winds and potentially damage equipment.
• Workers would also ensure that fuel tanks for emergency diesel generators were filled. These generators can provide back-up power for plant safety systems should the local electrical grid go down.
• Plans would also be developed to keep the plant appropriately staffed until the storm had passed. This might mean providing cots and food for employees unable to get home due to the weather conditions.

Amid all of these preparations, the NRC Resident Inspectors assigned to each plant would follow the progress of these activities while also tracking expected conditions at the plant. They, too, could be asked to stay at the facility until the storm had passed.
The old adage that success is “90 percent preparation and 10 percent perspiration” is one taken seriously when wicked weather is bearing down.