Analysis of Evaporator Scale SampleCX(s) Applied: B3.6Date: 08/10/2010Location(s): Aiken, South CarolinaOffice(s): Savannah River Operations Office
Office of NEPA Policy and Compliance
August 10, 2010
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CX(s) Applied: B3.6
Date: 08/10/2010
Location(s): Aiken, South Carolina
Office(s): Savannah River Operations Office
We will perform an analysis of samples of scale removed from the Gravity Drain Line (GDL) and the pot of the 2H Evaporator. The analysis will support the development of a Nuclear Criticality Safety Analysis (NCSA) for evaporator operation and chemical cleaning. Previous chemical cleaning operations were performed using a nitric acid flow sheet that involved copious amounts of depleted uranyl nitrate used as a neutron poison. Current interest and focus is on a chemical cleaning operation involving only a sodium hydroxide solution. Therefore, testing will involve dissolving sub-samples of scale sample in sodium hydroxide solution at temperatures up to 90 degrees Celsius. 7/28/2010 - Revised to reflect the periodic performance of Task 1 to support 2H Evaporator cleaning.