Cooper Nuclear Station Eyes Water Levels
If the river level reaches 902 Mean Sea Level, which is the measurement NPPD uses, then the reactor would go into shutdown and put into a safe mode. The river level at Cooper was at 895.7 Tuesday.
Several other measures would happen before NPPD reaches that point. If the river reaches 897 MSL, the sandbags would be put into place. If the river reaches 899 MSL, Cooper would declare a Notice of an Unusual Event with the Nuclear Regulatory Commission.
A year ago, flood waters along the river reached 899.4 MSL and a Notice of an Unusual Event was declared for about three days.
NPPD also reports that access to the plant can only be made by entering from Nemaha and traveling north. The north access road was underwater and inaccessible.
NPPD has positioned fuel to operate the emergency diesel generators which operates the plant’s safety system and will bring in a second tanker this week. Fuel that is already on site could operate the diesel generator for 20 days.
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