Readying the reactor for restart was projected to take 5 years and cost $314 million, with an additional $59 million a year needed to run it.
For the 30-min period, the maximum ΔTs were equal to 3.37 °C for NR, 2.62 °C for PF, and 1.79 °C for CF. The magnitude of the ΔTs were larger for restart compared to failure.
In addition, the MSR reactor required more than 2 h for initial start-up and for restart after emergency shutdown because the HTM needed to be evaporated and pressurized to the target pressure.
"NSF decisions about priorities for restart are conditioned by factors such as continuity of long-term data sets, time-criticality of observations or studies, impacts on young or early career investigators, and international or interagency partnerships.
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The power companies requesting review of their compliance with the new standards will be inspected in the order in which they submitted their petition for restart approval.
