Void coefficient reactor is reduced. In boiling-water reactors with large negative void coefficients, a sudden pressure rise (caused, for example, by unplanned closure of a steamline valve) will result in a sudden decrease in void content: the increased pressure will cause some of the steam bubbles to condense ("collapse"); and the thermal output will possibly increase until it is terminated by safety systems, by increased void formation due to the higher power, or, possibly, by system or component failures that relieve pressure, causing void content to increase and power to decrease. Boiling water reactors are all designed (and required) to handle this
Bayou Corne sinkhole Oxy3 had begun to cave in. Louisiana Governor Bobby Jindal issued an evacuation order on August 3, 2012 after residents reported smells of crude oil throughout the town. Texas Brine investigated the situation by drilling a relief well and found that the outer wall of the salt dome had collapsed, allowing sediment to pour into the cavern and oil and gas to escape to the surface, causing the shaking and bubbles residents had observed. When first the sinkhole appeared, it spanned a hectare (2.5 acres). As of late February 2014, the sinkhole is 26 acres and growing. Texas Brine is