Scheduled Outage:

Title: Install Test Lab Cooling Tower Bypass Valve Actuator Modification
Type: Power Network Telephone Road HVAC Water Gas Controls Other
Status: Proposed Confirmed Cancelled Completed
Proposed by: Carroll W. Jones E-Mail: jonesc@jlab.org
Start Time: 08/24/2016 08:00 End Time: 08/24/2016 11:00
Description and Impacts: Work is to begin an hour earlier at 8 AM versus 9 AM. Actual chiller off time will probably occur about 9 AM.
__________________________________________________________________________________
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.

Affected 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


Options: