Examples of Capsules in a sentence
Therefore, PG&E declared that allthe data from Capsules S, Y and V were “not credible” for the purpose of calculating limiting RTPTS values.
In Figure 5, I plot the fluence vs the EFPYs when Capsules S, Y, and V were withdrawn from the reactor.
It seems more likely that the extrema simply reflect erroneous experimental technique and/or data analysis or that the data from Capsules Y and V were somehow transposed.
Using all available protocols is especially important in light of the fact that Capsule B does not contain the limiting weld material that was in Capsules S, Y and V.
Despite these concerning results, PG&E discredited all of the data it had obtained from Unit 1 in Capsules S, Y and V, based on a determination that the “best fit curve” between the Capsule V data and data from earlier-withdrawn Capsules S and Y contained scatter values for two data points that exceeded the criteria in Regulatory Guide (RG) 1.99, Rev.
First, there was no reason for PG&E to rely on questionable generic data or data from so-called “sister” reactors for more than a short time after the 20032 In 2011, eight years after informing the NRC that the data from Capsules S, Y, and V were “not credible” (PG&E (2003)), PG&E relied on data from another reactor to assert that Unit 1 can be safely operated to the end of a 20-year renewal period.
The paucity of plant-specific data from 14.27 EFPY (when the Capsule S was withdrawn and tested (PG&E (2023)), to the EOL EFPY of 32 is a problem of the utmost seriousness, particularly when one realizes that data from one or both of Capsules Y and V are suspect for reasons speculated upon elsewhere in this Declaration.
Figure 5: Plot of fluence vs the EFPYs when Capsules S, Y, and V were withdrawn from the reactor.
In my professional opinion, PG&E has incorrectly discredited the data it obtained fromUnit 1 in Capsules S, Y and V for the purpose of calculating RTPTS values.
Second, once PG&E had declared the Charpy data from Capsules S, Y, and V showed that Unit 1 was approaching regulatory limits and yet found the data not to be credible, it was incumbent on PG&E to acquire and evaluate as much additional data as possible, not to postpone obtaining it.