[Utility Outage] Scheduled HVAC Outage - 08/24/2016 08:00

[Carroll W. Jones]

The following HVAC Outage has been Confirmed:

Outage:      Install Test Lab Cooling Tower Bypass Valve Actuator Modification
Proposed By: Carroll W. Jones
Start Time:  08/24/2016 08:00
End Time:    08/24/2016 11:00

Description/Impacts:
Work is to begin an hour earlier at 8 AM versus 9 AM.  Actual chiller off time will probably occur about 9 AM.
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Install spacer to raise Test Lab Cooling Tower bypass valve pneumatic actuator as required to enable full range of bypass valve assembly motion.  Cooling tower pumps must be turned off briefly to enable actuator linkage to be removed and re-installed safely without butterfly valves slamming shut.  Loss of cooling tower flow requires CUP chillers and Test Lab Acid Chiller to be off while the cooling tower water is not flowing.  Chiller off time should be less than 15 minutes.  Central Chiller System chilled water pumps will remain operational to minimize impact to the F-Wing Data Center, site clean rooms, and other system cooled by the Central Chiller System.

Impacted Areas:
	Bldg 01: North LINAC
	Bldg 02: South LINAC
	Bldg 21: North Extractor Service
	Bldg 38: South Access
	Bldg 39: East Arc Service
	Bldg 40: West Arc Service
	Bldg 45: West Arc Service
	Bldg 49: East Arc Service
	Bldg 50: East Arc Service
	Bldg 53: Injector Service
	Bldg 56: West Arc Service
	Bldg 60: Chiller Utility Plant
	Bldg 63: East Arc Service
	Bldg 67: North Access
	Bldg 68: West Arc Service
	Bldg 82: South Extractor Service
	Bldg 12: CEBAF Center
	Bldg 58: Test Lab
	Bldg 90: Experimental Equipment Lab

For more details, visit the webpage listed below:
https://cc.jlab.org/cgi-bin/infrastructure/Outage/OutageView?ident=5