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- Chilled water issues
- per Luke, preliminary data shows the issues with chilled water is directly related to the XDP refrigerant temperature set point changes that was made recently not clogged stariners
- Also early in the season, changes to the chilled water differential pressure set point change (dropped from 30 to 25) may have contributed.
- The above 2 cause the XDP valve to operate at higher opening to maintain refrigerant temperature during transition.
- Operating at higher valve popping openping is good not bad thing
- But the nuisance alarms have be addressed
- Tower water treatment controller is up and running, it required to stop tower operation for 2 days.
- All water treatment now under control
- Reports of Weekly and monthly water treatment will be be generated.
- This could be the last week for tower operation for the season.
NPCF Week 14 (4/1-4/7)
- Tower switched multiple time over the weekend, received complaints from Cray team.
- Assisted Blue Waters senior design team on their project.
- At the request of Cray personnels investigated causes of chilled water spikes and low flows (strainers issues)
- Switched all XDPs chilled water strainers to standby ones and F&S are cleaning all the ones that were in service.
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