Thursday, May 24, 2012
SPECIAL POST FUKUSHIMA
Lord Stirling's News Blog EUROPE
Holy Shroud of Turin
FUKUSHIMA Fuel Storage Pool No. 4
Chris Harris, the nuclear expert that is usually on the NutraMedical Report Show with Dr. Deagle and myself on Thursday afternoons, has made an interesting and rather scary observation, that has not been made elsewhere. The seal holding the critical supply of water in No. 4's spent fuel storage pool was never designed to operate for over a year. It is holding back all the water because at the time of the earthquake, the reactor was being serviced. If the seal gives way, all of the water in the storage pool will quickly drain. This means that we do have have to wait on another serious earthquake for a super/mega-disaster to happen, it can happen at any time. Keep in mind that if the pool goes it will be the greatest human death causing catastrophe in recorded history. Below are Chris's comments. Stirling
Although much has been discussed about the physical condition of the Fukushima Unit 4 Spent Fuel Pool and Reactor Building, I provide additional cause for concern. The concern is that in the current configuration (Refueling Mode) of Unit 4, there is a risk of Drain Down. The Drain Down of the Spent Fuel Pool could occur via Failure of the "Refueling Bulkhead and Bellows" (see attached Drawing).
For greater than a year, "Fuel Pool" (See Drawing) has been Connected to the "Refueling Cavity" that exists above the Reactor Head. During Refueling Mode, the Drywell Head (Containment) is removed and stowed in its Special Stand off to the side. Additionally, the Reactor Head is removed so that the Reactor Flange is exposed. The Refueling Cavity formed by the removal of these components is then Filled with Water. The "Refueling Bulkhead and Bellows" is a thin flexible Stainless Steel ring that keeps the water from dumping down into the Drywell (see Drawing).
During Refueling, a 25' long by about 6 ' wide Rectangular Stainless Steel "Gate" (or dam) is slid up and out of its Slot. This Gate, forms a portion of the Wall of the Fuel Pool (see Drawing between Fuel Pool and Refueling Cavity above Reactor Flange). The Gate is removed after the Fuel Cavity is filled so that the Fuel Pool doesn't drain into the Cavity and dangerously expose Fuel Assemblies.
My concern is that the Refueling Bulkhead and Bellows is not designed for long term Water Retention. In addition to earthquakes, just plain corrosion can cause this Bellows to let go and leak catastrophically. If this were to occur, then the Fuel Pool would Drain to dangerously low levels and would not have integrity to support its Refill.
The Fuel Pool Gate needs to be re-installed to disconnect the potential drain-path from the Refueling Bulkhead and Bellows damage.