Scheduled Outage:

Title: B01 Power Outage (5-Year extensive PMs)
Type: Power Network Telephone Road HVAC Water Gas Controls Other
Status: Proposed Confirmed Cancelled Completed
Proposed by: Howard Dunlap E-Mail: dunlap@jlab.org
Start Time: 10/06/2026 05:00 End Time: 10/08/2026 14:00
Description and Impacts: FMO-E will be conducting extensive 5-year electrical preventive maintenance on electrical panelboards, switchgear, and disconnects throughout Building B.01. These scheduled outages will occur from 10/6/2026 through 10/8/2026. Emergency power will not be affected.
Affected systems by date:
10/6/2026:
NL-3 SWBD and all associated panels and disconnects, including Building B21 & B.87, which is fed from NL-3 SWBD.

10/7/2026:
NL-2 SWBD, NL-4 SWBD, and all associated panels and disconnects, including Building B.07, which is fed from NL-2 SWBD.
10/8/2026:
NL-1 SWBD and all associated panels and disconnects, including Buildings B.87.

Each day’s work is expected to take approximately 5 to 8 hours to complete preventive maintenance on the electrical equipment. Please see ATLIS-121236 attachments for a summary of dates, panel schedules, and detailed lists of affected systems.

Affected Areas:

Bldg 01: North LINAC
Bldg 07: Exit Stair No. 1
Bldg 21: North Extractor Service
Bldg 87: Accelerator Maintenance & Support
Bldg 89: Accelerator Technical Support


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