[ALERT] Next Quarterly Maintenance Shutdown - Moved to Weekend of April 5th - Notice 1 of 3

[Physics facility information]

Quarterly PM (planned maintenance) on the PRB's four air handler units and six connected exhaust fans will be conducted by FOD on Saturday, April 5th 2014.

This is a scheduling change point from the planned date of Wednesday April 9th and is made to align quarterly PM work with previously planned work to replace fan pulleys on AHU-1 and AHU-2.

Maintenance is scheduled to start at 7:00 AM and is planned to be completed by no later than 3:00 PM.

Because the lab side air handlers and connected exhaust fans will be shut down, fume hood operations should be suspended for the full maintenance period.

Occupants are reminded that although the building will remain open and accessible, air flows and other air-related building processes will be impacted throughout the day as maintenance is done.

In addition to normal PM activities, fan pulleys will be replaced with new sized pulleys designed to reduce overall system static pressure on both AHU-1 and AHU2.

Individual lab pressure controls are expected to remain unchanged and automatically compensate for the system static pressure change.  Occupants should report instances where lab pressure may need adjusted.

Please take planned action to prepare for this event.

Key Summary Points:

- Air handler / Exhaust Fan shut down Wednesday, January 8th.
- No building closure or evacuation
- Suspend fume hood operations
- Building air flow and air-related processes will be interrupted throughout the day
- Performance modification - reduce static pressure by replacing fan pulley on AHU-1 and AHU-2

For long range planning purposes, the 2014 quarterly maintenance dates are planned as follows:

Q1-2014 = January 9th Wednesday - Complete

Q2-2014 = April 5th Saturday (changed from April 9th) - Announced

Q3-2014 = July 9th Wednesday - Planned

Q4-2014 = October 8th Wednesday - Planned

This message is Notice 1 of 3 of such alerts
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