Sentences with phrase «emergency cooling water»

The NRC investigators reported: • The plant had a single diesel - driven pump to provide emergency cooling water to a single reactor in case an earthquake cut off normal water flow.

Not exact matches

In fact, throughout the first week of the Fukushima crisis, emergency workers tried to figure out a way to open up a larger hole in the Unit 2 reactor building, which had not suffered an explosion, to allow better access to inject cooling water without creating the kind of spark that might cause another hydrogen blast.

Another issue for critics is whether the water delivered from the elevated reservoir in an emergency would continue to cool the reactor if there were a sustained loss of power for emergency pumps.

By ripping off the walls and roofs, the explosions enabled emergency workers to spray cooling water into the pools directly — if inefficiently — via water cannons and other devices.

As NRC staff noted during the Fukushima emergency, when there was concern that the spent - fuel pool at Unit 4 may have lost its cooling water as well as been damaged by the reactor building explosion, adding cold water to already hot fuel can create a problem in its own right.

The 24 - inch pipe was part of the plant's Essential Service Water System, a network of eight huge pipes that carries water to cool emergency equipWater System, a network of eight huge pipes that carries water to cool emergency equipwater to cool emergency equipment.

In the old RBMKs, if one of the pipes carrying cooling water through the core breaks or is blocked, an emergency cooling system can prevent overheating, says Niehaus.

One new feature, for example, is a 2.8 - million - liter (750,000 - gallon) water tank on top of the containment vessel surrounding the core that would use gravity in the case of emergency to send water flowing over the core, cooling it to prevent a meltdown.

At about 4 A.M. local time, the main pumps feeding cooling water into Unit 2 failed and, due to confusion amidst the klaxon of alarms and flashing warning lights, the men operating the reactor made the situation worse when they mistakenly thought there was too much water in the core and shut off emergency pumps, thereby reducing further the amount of coolant reaching the reactor.

Key features of this system include a high - pressure containment vessel immersed in a large pool of water and a passive emergency core cooling system that relies only on gravity - driven convection of the coolant and conduction of heat to the containment vessel surface.

Move the animal to a cool spot, apply cool (not cold) water, wrap in a wet towel and immediately get to your veterinarian or Emergency Animal Clinic for treatment.

In the fall of 2007, workers at the Byron nuclear power plant in Illinois were using a wire brush to clean a badly corroded steel pipe — one in a series that circulate cooling water to essential emergency equipment — when something unexpected happened: the brush poked through.

The AP1000 is, in theory, safer than previous models because it has an 8 million - pound water tank perched on its roof; in the event of a power outage or generator failure, it provides an emergency cooling system powered by gravity for up to three days — a window of time estimated to be long enough to avert a meltdown.

The lithium design does not need water cooling, and in an emergency situation the fuel can be dumped into a holding tank where it cools and becomes relatively harmless.

Engineers believed that residual energy from the turbine rotation could be used to pump cooling water until emergency generators kicked in.

This should include an emergency kit with flares and first aid, a copy of your travel insurance policy, the car's registration and your driver's license, a cooler with water and food, and blankets and pillows.