At 1 : 13 p . m ., the three pressure relief valves were forcibly opened as the hydrostatic head pressure of the raffinate built to over above atmospheric pressure.
22.
The defoliant project was canceled before any process equipment was installed, and the Army transferred of land encompassing the raffinate pits back to the AEC while retaining the Chemical Plant.
23.
In the multistage processes, the aqueous raffinate from one extraction unit is fed to the next unit as the aqueous feed, while the organic phase is moved in the opposite direction.
24.
Note that while the vast majority of the uranium is removed by PUREX nuclear reprocessing, a small amount of uranium is left in the raffinate from the first cycle of the PUREX process.
25.
With the relief valves fully open, over of heated raffinate passed directly into the collection header over a 6 minute period before closing, as pressure in the system dropped to their closing or blowdown pressure of above atmospheric pressure.
26.
In 1985, the Army transferred full custody of the Chemical Plant to the United States Department of Energy ( DOE ), at which time the DOE designated control and decontamination of the Chemical Plant, raffinate pits, and Quarry as a major project.
27.
As part of the management of minor actinides it has been proposed that the lanthanides and trivalent minor actinides should be removed from the PUREX raffinate by a process such as DIAMEX or TRUEX . In order to allow the actinides such as americium to be either reused in industrial sources or used as fuel the lanthanides must be removed.
28.
The hydrocarbons originated from liquid overflow from the F-20 blowdown stack following the operation of the raffinate splitter overpressure protection system caused by overfilling and overheating of the tower contents . " Both the BP and the U . S . Chemical Safety and Hazard Investigation Board reports identified numerous technical and organisational failings at the refinery and within corporate BP.
29.
The MOX fuel was dissolved in nitric acid, the bulk of the uranium and plutonium were removed by means of a PUREX type extraction using tributyl phosphate in a hydrocarbon, the lanthanides and the remaining actinides were then separated from the aqueous residue ( raffinate ) by a diamide based extraction to give, after stripping, a mixture of trivalent actinides and lanthanides.
