Metallic uranium ZPPR fuel : corrosion characteristics and corrosion product oxidation kinetics.

The Meaning of the Sampling of the ZPPR Canisters And Proposed New Surveillance Operating Instructions

“…Without concentrations versus residence time, it is impossible from the sample data to conclude that all the containers are behaving the same so that the current procedure is not producing samples representative of all the canisters. In the previous analysis report (Totemeier, 1997), all of the oxygen and hydrogen concentrations measured were less that 0.1 and no hydriding was observed. These satisfactory conditions no longer exist.…”

“…This observation and statements in Solbrig, 1994 andTotemeier, 1997 indicates that the getters were probably all working until 1997. Assuming that the getters were placed in the canisters two years before the Solbrig, 1994 publication indicates the getters may function for five years.…”

“…The previous analysis of the data was published in Totemeier, 1997. The concentrations measured at that time were much smaller.…”

“…The Pd is needed to catalyze the reaction of hydrogen with the DEB material. (Totemeier, 1997) and hydrogen with oxygen.…”

“…There is apparently no current requirement to analyze the data taken. The analysis previous to this on was reported in 1997 (Totemeier, 1997). The lack of analysis of the data has allowed the plates to hydride in many of the canisters.…”