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Magnesium Mono Potassium Phosphate Grout for P-Reactor Vessel In-Situ Decomissioning
The objective of this report is to document laboratory testing of magnesium mono potassium phosphate grouts for P-Reactor vessel in-situ decommissioning. Magnesium mono potassium phosphate cement-based grout was identified as candidate material for filling (physically stabilizing) the 105-P Reactor vessel (RV) because it is less alkaline than portland cement-based grout (pH of about 12.4). A less alkaline material ((<=) 10.5) was desired to address a potential materials compatibility issue caused by corrosion of aluminum metal in highly alkaline environments such as that encountered in portland cement grouts. Information concerning access points into the P-Reactor vessel and amount of aluminum metal in the vessel is provided elsewhere. Fresh and cured properties were measured for: (1) commercially blended magnesium mono potassium phosphate packaged grouts, (2) commercially available binders blended with inert fillers at Savannah River National Laboratory (SRNL) (3) grouts prepared from technical grade MgO and KH(sub 2)PO(sub 4) and inert fillers (quartz sands, Class F fly ash), and (4) Ceramicrete(reg-sign) magnesium mono potassium phosphate-based grouts prepared at Argonne National Laboratory. Boric acid was evaluated as a set retarder in the magnesium mono potassium phosphate mixes.
Magnesium Mono Potassium Phosphate Grout for P-Reactor Vessel In-Situ Decomissioning
The objective of this report is to document laboratory testing of magnesium mono potassium phosphate grouts for P-Reactor vessel in-situ decommissioning. Magnesium mono potassium phosphate cement-based grout was identified as candidate material for filling (physically stabilizing) the 105-P Reactor vessel (RV) because it is less alkaline than portland cement-based grout (pH of about 12.4). A less alkaline material ((<=) 10.5) was desired to address a potential materials compatibility issue caused by corrosion of aluminum metal in highly alkaline environments such as that encountered in portland cement grouts. Information concerning access points into the P-Reactor vessel and amount of aluminum metal in the vessel is provided elsewhere. Fresh and cured properties were measured for: (1) commercially blended magnesium mono potassium phosphate packaged grouts, (2) commercially available binders blended with inert fillers at Savannah River National Laboratory (SRNL) (3) grouts prepared from technical grade MgO and KH(sub 2)PO(sub 4) and inert fillers (quartz sands, Class F fly ash), and (4) Ceramicrete(reg-sign) magnesium mono potassium phosphate-based grouts prepared at Argonne National Laboratory. Boric acid was evaluated as a set retarder in the magnesium mono potassium phosphate mixes.
Magnesium Mono Potassium Phosphate Grout for P-Reactor Vessel In-Situ Decomissioning
G. Langton (author) / D. Stefanko (author)
2011
72 pages
Report
No indication
English
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