27-Mar-2010 - Generator Testing & Maintenance

[porcupine]

Hi Guys,

Please be advised of the following maintenance window:

Maintenance Window: Saturday March 27th 2010, 7:00pm - 11:59pm EST

Affected Device: Primary power feeds
Affected Customers: All customers
Service Impacting: No - Precautionary maintenance notice

Details: Building management will be performing a simulated main power failure, in order to test the generators, and Priority Colo’s Automatic Transfer Switch (ATS), thus performing a full load generator test. Building management will open the circuit breakers at our mains, allowing our ATS to transfer load and start the generators, as would happen in a real power failure. During this maintenance, our Uninterruptable Power Supplies will carry all critical/server load, until the generators have started, and are ready to accept the load. Building management has pre-checked fuel levels in the day tanks, and reserve tanks, and will have numerous contractors on-site in case of incident. In the event of critical failure, commercial power will be immediately restored. Priority Colo staff will also be on-site for the duration of this maintenance as a precautionary measure.

For those who may notice this is effectively a repeat of the maintenance done this past Saturday March 20th. While we are confident that we have worked out the issues experienced during the initial tests, we opted to schedule this additional maintenance window to avoid potentially degrading our batteries longterm carrying capacity; a potential result of repeatedly stressing the battery strings within a short period of time.

[porcupine]

This maintenance period has been cancelled.

Originally this maintenance period was scheduled, simply to confirm the findings/results from our last series of tests, by building a larger sample set. This is no longer necessary, as the results have been independently confirmed in a non-intrusive manner, removing the requirement for additional testing with regards to the generators and related systems.