Project

General

Profile

Rack Power ONOFF procedures » History » Version 21

« Previous - Version 21/93 (diff) - Next » - Current version
Sowjanya Gollapinni, 08/21/2015 05:59 PM


Rack Power ONOFF procedures

Who does this: In the normal mode of operation, it is expected that ONLY sub-system experts (most probably on-call experts) will do the power off for their respective sub-systems. It is only in their absence and upon approval from the run coordinator that others will be allowed to do this.

Step 0: Go on the platform, with all requirements: Hard hat, closed-toed boots, and most importantly, Two-person rule!

Readout Electronics Racks Power-Off/On Procedure for Planned Power Outages:

Step 1: Make sure the software DAQ/read-out processes are not running. In other words, this means that the platform power off procedure should ONLY be done AFTER the DAQ/read-out processes are brought down gracefully by the DAQ experts. Confirm from the On-call DAQ expert and the uB operator on shift that this is the case before proceeding.

Remember, the following racks should be powered off in the following order, and following indicated steps.

Side note: For reference, we are following the reverse of the prescription as written in
http://microboone-docdb.fnal.gov:8080/cgi-bin/RetrieveFile?docid=3825&filename=TPC-R1_Power-up.pdf&version=10

1. TPC-R2 through TPC-R5 power off:
a. Switch off both Wiener PS using the red toggle switch on the front panel (gently push down the toggle switch for 3 seconds until the display turns off).
b. Switch off the middle (CB2) and lowest (CB3) circuit breaker (circuit breaker switches have blue LEDs lit on them) by accessing the back side of the rack; verify fans are off.
c. Switch off top (CB1) circuit breaker; verify NetGear network switch inside rack is off.
d. Switch off Slow controls using front panel switch on the slow controls panel (gently pull the Chassis on/off switch and press down). The +5V, +3.3V, and Heart Beat LEDs should turn off.
e. Switch off the RPS (use switch located on the back panel of the RPS unit). Go behind the racks and use a step stool to reach, if needed; verify the AC Output ON, POWER, SENSOR, and ALARM LEDs on the AC Switch Box are off.
f. Only the AC Input Good LED on the AC Switch Box should be ON.

2. TPC-R1 power off:
a. Switch off Wiener PS using the red toggle switch on the front panel (gently push down the toggle switch for 3 seconds until the display turns off).
b. Switch off the lowest (CB3) circuit breaker; verify fans are off.
c. Switch off the middle (CB2) circuit breaker; verify NetGear network switch inside rack is off.
d. Switch off Slow controls using front panel switch on the slow controls panel (gently pull the Chassis on/off switch and press down). The +5V, +3.3V, and Heart Beat LEDs should turn off.
e. Switch off the RPS (use switch located on the back panel of the RPS unit). Go behind the racks and use a step stool to reach, if needed; verify the AC Output ON, POWER, SENSOR, and ALARM LEDs on the AC Switch Box are off.
f. Only the AC Input Good LED on the AC Switch Box should be ON.

3. LIZ Rack power off:
a. Switch off the two NIM bins using their front panel switches.
b. Switch off the function generator (Strobe pulser) using its front panel on/off button.
c. Switch off the fan switch on the fan front panel; verify the fan is off.
d. Switch off the middle (CB2), top (CB1), and bottom (CB3) circuit breakers.
e. Switch off Slow controls using front panel switch on the slow controls panel (gently pull the Chassis on/off switch and press down). The +5V, +3.3V, and Heart Beat LEDs should turn off.
f. Switch off the RPS (use switch located on the back panel of the RPS unit). Go behind the racks and use a step stool to reach, if needed; verify the AC Output ON, POWER, SENSOR, and ALARM LEDs on the AC Switch Box are off.
g. Only the AC Input Good LED on the AC Switch Box should be ON.

4. PMT/TRIG Rack power off:
a. Switch off Wiener PS using the red toggle switch on the front panel (gently push down the toggle switch for 3 seconds until the display turns off).
b. Switch off the NIM bin using its front panel switch.
c. Check that the PMT HV (CB3) bottom circuit breaker is off. If not, stop and call a PMT HV expert.
d. Switch off the middle (CB2) circuit breaker; verify the fan is off.
e. Switch off the CB1 circuit breaker; verify NetGear network switch inside rack is off.
f. Switch off Slow controls using front panel switch on the slow controls panel (gently pull the Chassis on/off switch and press down). The +5V, +3.3V, and Heart Beat LEDs should turn off.
g. Switch off the RPS (use switch located on the back panel of the RPS unit). Go behind the racks and use a step stool to reach, if needed; verify the AC Output ON, POWER, SENSOR, and ALARM LEDs on the AC Switch Box are off.
h. Only the AC Input Good LED on the AC Switch Box should be ON.

5. Make an elog entry that the readout electronics racks have been successfully powered off.

DRIFT HV rack Power-Off/On procedure for Planned Power Outages:

First confirm from the On-call Drift HV expert and uB operator on shift that the DRIFT HV is ramped down as per procedure and is at 0 V. Do not proceed without this confirmation.

Step 1: After confirming the above, ensure that the Glassman is at 0 V by looking at the power supply front panel. If the power happens to be off, the voltage is 0.
(At this point, if a power outage occurs, it is ok from a HV health standpoint. The remaining steps are additions for a more graceful shutdown of the entire HV rack.)

a. After confirming Step 1, turn off the Glassman by pushing the orange on/off button on the front of the supply.
b. Turn off the slow controls box by gently pulling the on/off switch on the front left side of the box and pushing it down. The +5V, +3.3V, and RPS Status LEDs should turn off.
c. Switch off the RPS (use switch located on the back panel of the RPS unit). Go behind the racks and use a step stool to reach, if needed; verify the AC Output ON, POWER, SENSOR, and ALARM LEDs on the AC Switch Box are off.
f. Only the AC Input Good LED on the AC Switch Box should be ON.

Once done, let the uB operator on shift know that the power-off is done and make an e-log entry that the rack has been successfully powered off.

ZMON box Power-Off/On procedure for Planned Power Outages:

a. The ZMON unit is located separately on a single shelf next to the PM01 rack. Turn off the ZMON slow controls box by gently pulling the on/off switch on the front left side of the box and pushing it down.

Once done, let the uB operator on shift know that the power-off is done and make an e-log entry that the rack has been successfully powered off.

TPC-PS (subsystem: OnDetPower) rack Power-Off/On procedure for Planned Power Outages:

The TPC-PS rack power down CANNOT be done until the TPCPS expert has gracefully brought all channels down and turned them off including the Power supply Main Switch. First confirm from the uB operators on shift that this has been done. Once confirmed, proceed with the steps below.

a. Switch off the Wiener MPOD power supply (located on the bottom portion of the rack) by pressing the front panel ON/OFF switch. The front panel display should turn off.
b. Switch off the Calibration Pulsar (needs picture and location in the rack)
c. Turn off the Slow controls box (second box from top). Slightly (and gently) pull the Chasis ON/OFF switch and press down. All LEDs should come down.
d. Now, go to the back side of the rack, and open the back door of the rack and power off the RPS ON/OFF switch located on the back panel of the RPS box (Top most box in the rack). Use step stool if needed to reach the switch.
e. Flip all the Eaton breaker switches down (Eaton breaker switches are located on the right side of each rack with blue lights lit. There are 3 Eaton switches per rack).

Once done, let the uB operator on shift know that the power-off is done and make an e-log entry that the rack has been successfully powered off.

Purity Monitor (PM01, PM02, PM03) rack Power-Off/On procedure:

Once done, let the uB operator on shift know that the power-off is done and make an e-log entry that the rack has been successfully powered off.

LASER racks Power-Off/On procedure for Planned Power Outages:

First confirm from the On-call LASER expert and uB operator on shift that the LASER is off and the Laser computers that are in the rack are also gracefully brought down. Do not proceed without this confirmation.

a. After confirming above, ??
b. Turn off the slow controls box by gently pulling the on/off switch on the front left side of the box and pushing it down. The +5V, +3.3V, and RPS Status LEDs should turn off.
c. Switch off the RPS (use switch located on the back panel of the RPS unit). Go behind the racks and use a step stool to reach, if needed; verify the AC Output ON, POWER, SENSOR, and ALARM LEDs on the AC Switch Box are off.
f. Only the AC Input Good LED on the AC Switch Box should be ON.

Once done, let the uB operator on shift know that the power-off is done and make an e-log entry that the rack has been successfully powered off.

Power-Off/On procedure for Planned Power Outages: