NPCF Week (7/1-7/7)
- No incident to report
- F&S continues PM work
- F&S Installing new weather station and tower fans vibration switches
- reduction in leak alarms after the insulation repairs
- Loading docs cleaning
NPCF Week(6/17-6/23)
- F&S started VFDs annual preventive maintenance, it will take a week or so to complete, this is will not impact critical equipment but will impact office and mechanical rooms ventilation.
- brought in an outside mechanical contractor to estimate the cost to preform boilers tune up to verify combustion safeties and boiler setting.
NPCF Week(6/10-6/16)
- Site experienced power event that impacted Feed A which caused Blue Waters and industry systems productions to reboot.
- Event was caused by lighting activities that impacted Ameren transmission lines.
- This event was not reported by the site power monitoring meters due to network filtering their email as spam, F&S has fixed the problem and reporting has been resumed
- Reviewed power feed to the industry system, found out that most of the racks power are not redundant.
- Resolved CRAH units alram
- Working on to have an outside contract to tup up the boilers
- Continues to cycle pump to inject biocide to inhibit bacteria growth.
- Getting pricing form F&S to install PPC4
NPCF Week 23 (6/3-6/9)
- Multiple leaks detection alarms due to condensation of chilled water pipes, submitted work order to fix insulation.
- Wired 10 power drops for mForge
- Lost one power feed to mForge rack EE133 while installing panel PP1A dead cover, power was restored after 17 hours when it was discovered.
NPCF Week 22 (5/27-6/2)
- Humidity at Cray machines at 50 deg dew point, the CRAH are not producing any cooling due to low return air temperature.
- Made adjustment to fan setting in all CRAH, the fan was set to manual, I changed setting to return air and minimum speed of 60% for better efficiency and even pressure control.
- Building chilled water pressure is oscillating due controlling valves not in tune, will address with Bruce Mikos when he is back from leave.
- AHU 1,2,3 economizer not woking properly, had to take it off and switch to chilled water cooling to maintain temperature, will address with Bruce.
NPCF Week 21 (5/20-5/26)
- Experienced leak detection alarms due to condensation of exposed cold chilled-water piping.
- Area under floor tiles are dirty need clean up
- Working with Cray, made adjustment to chilled water pressure lowered to 10 psid ( Typically is set to 15 psid)
- Turned off 6 CRAH units to conserve power and due to the data center floor temperature is low in the mid 60s
- Logged temperature on LSST 73, 74 rack due to switches high temperature
NPCF Week 20 (5/13-5/19)
- Low level activity at the data center
- Repowerd SCP 5 and 6 from different sources
NPCF Week 19 (5/6-5/12)
- Assisted installing iForge racks blanking panels- all complete but one rack
- Per Jim, severs temperature is 15-20 below max.
- Electrician installed over protection devices for towers makeup valves
- Blue water refrigerant temperature was lowed to 57 degrees F.
- Ceased tower operation for the season, cooling is 100% from campus.
- Working May II cage
NPCF Week 17 (4/22-4/28)
- Towers are cycling more often of/off due to weather warming up.
- Sealed data center floor tile penetration to minimized air leakage, CRAH fans speed dropped from 100% to 75% saving energy
- General building cleaning.
- New tower controller is working well.
- Submitted new facility PM in CMMS.
- Tedra will be working with WireCrafter to order the cage.
NPCF Week 16 (4/15-4/21)
- 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 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.
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