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
Akhayat sinkhole But a part of the ladder has been demolished and descending by using the ladder is dangerous. There are several man made caves on the walls of the sinkhole. west of the sinkhole there are traces of an ancient settlement which was probably a cult center. It is thought that the sinkhole and the settlement were probably related to each other. There are rock tombs and altars to the south of the sinkhole There are other sinkholes in Mersin Province such as Cennet and Cehennem system and Kanlıdivane. Akhayat is relatively less known. Although it is possible to visit the