The T1 and T2 cooling packages were inspected today while running. No water leaks were observed at either package including the high-active loops and copper active.
The T1 pump was fairly noisy (video was taken to record the sound). This is the new pump installed in August 2018 (see E-Log #242). Maico reports that it had a similar noise when started after installation in August, and they were unsure if it was a normal sound or not. The pump it replaced ran quietly, as well as the pump currently running at T2. Further investigation will be performed this shutdown to try and determine the cause of the noise and appropriate action.
Both packages have been turned off and pump contactor control signals disconnected in preparation for MRO work and power outage this weekend. |