There are different kinds of reactors with varying degrees of containment and redundant protective equipment. A PWR which runs enriched fuel has inherent risks that a PHWR doesn"t. Used PWR fuel will take off and go critical in the used fuel bay if surrounded by plain water. That is what happened in Japan when cooling was interrupted and the bay was refilled with water lacking sufficient boron neutron absorber. The Japanese used fuel bays also contained many years worth of used fuel that should have been in long term storage decades ago. Used PHWR fuel is inert when placed in ordinary water. The PHWR around here have everything behind one or two reinforced heavy grade concrete walls four feet thick each. One regular backup generator, six backup generators , two emergency backup generators and connections for fire truck pumpers. Plus all the battery backup pumps and two elevated cooling water storage tanks. Then there is the vacuum containment system to purge any leaks and filter system to scrub anything if the vacuum system fills up. Much different than Chernobyl , three mile or Japan designs. Our operators also have the training and option to think out of the box if an unique problem arises that is not covered in the procedures.
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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