Site-wide power outages and GCC substation 480V maintenance

WHAT ARE WE DOING?
ComEd and FESS have scheduled site-wide power outages to perform ComEd maintenance on Monday, Aug. 30 and Tuesday, Sept. 7 for all Fermilab locations powered by Master Substation (MSS). Additionally, FESS is scheduled to perform annual GCC Feeder/Substation 480V maintenance on Thursday, Sept. 2.

WHEN WILL THIS OCCUR?
Site-wide power outages and GCC substation 480V maintenance:
• Monday, Aug. 30, 7 a.m. to 7:30 a.m.: Site-wide power outages
• Thursday, Sept. 2, 7 a.m. to 4 p.m. (rain date Sept. 3): Annual GCC Feeder/Substation 480V maintenance
• Tuesday, Sept. 7, 7 a.m. to 7:30 a.m.: Site-wide power outages

WHAT IS THE IMPACT TO YOU?
Site-wide power outages on Monday, Aug. 30 and Tuesday, Sept. 7:
• WH8-Fiber Central: Expected to remain operational on standby generator power
• Wilson Hall (WH): Electricity and cooling will be unavailable in most areas of Wilson Hall
• Feynman Computing Center (FCC) building and second- and third-floor computer rooms: Expected to remain operational on standby generator power
• Grid Computing Center (GCC): Expected to remain operational on portable generator power

GCC substation 480V maintenance on Sept. 2 (rain date Sept. 3):
• GCC: Expected to remain operational on portable generator power
• This maintenance will not affect WH/FCC office areas and computer rooms

WHAT DO YOU NEED TO DO?
If your office is in Wilson Hall, please shut down your computer before you leave work on Friday, Aug. 27 and on Friday, Sept. 3.