Lockout / Tagout for HDe 1.5T System Cabinet PDU Main Breaker

Prerequisites

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Thick, Long Neck Flat Bladed Screwdriver	1	-	-	-
Multimeter For Reading Voltage	1	-	-	-
Personal Lock	1	-	46-194427P320	-
Lockout/Tog out Multiple locking device	1	-	46-194427P313	-
Brass Master Padlock	1	-	46-194427P230	-
Red warning tag	2	-	46-194427P322	-
Line cold plug cover	1	-	46-194427P231	-

Table 3. Safety

POSSIBLE SERIOUS INJURY OR DEATH
Electrical Shock Hazard
REMOVE POWER FROM THE RF/PDU CABINET BEFORE ATTEMPTING TO REMOVE ANY COMPONENTS FROM THE SYSTEM

This document covers PHOENIX Power Distribution Unit (PDU) (ACGD and GRFD- OpenSpeed)- Lockout and PHOENIX Power Distribution Unit (PDU) (ACGD and GRFD- OpenSpeed) - Restoring Power. Prior to performing work on the System Cabinet electronics (except PDU) and electronics in Magnet Room, the steps in this Lock Out Tag Out Procedure must be performed by a LOTO Authorized GE Field Engineer. Completing all steps in this procedure will ensure a safe environment when working on these parts.

Table 4.
Name of Equipment	Number of Locks	Titles of Employees Authorized to perform LOTO	Titles of Affected Employees	How to Notify
Systems Cabinet	1 per GE FE	GE Field Engineers	Hospital Personnel	Verbal, Posted signs

ENERGY SOURCE	YES	NO	LOCATION OF ENERGY ISOLATING MEANS	MAGNITUDE OF ENERGY
Electrical	x		PDU Circuit Breaker Panel	208Vac, 420Vac
Pneumatic		x
Hydraulic		x
Gas/Water/Steam		x
Chemical		x
Mechanical Motion		x
Gravity		x
Springs		x
Thermal		x
Stored Energy	x		When working internal to 1.5 T amplifier, wait at least 5 minutes then discharge capacitors	208Vac
Air Under Pressure		x
Oil Under Pressure		x
Water Under Pressure		x
Gas Under Pressure		x
Steam		x
Other		x

From Common Service Desktop, click 'Utility / VRE / Soft Power Off' to turn off the VRE.

note:
It is not necessary to perform Software Power OFF for VRE from HDE14.0_M4 software.

Figure 1. VRE Soft Power OFF
At the background of desktop, right click and select 'Service Tool / System Shutdown' to shutdown the system.

Figure 2. System Shutdown
Select OK to confirm the shutdown.
Wait for the system to indicate on the monitor that it is safe to power off the computer before proceeding. (This usually takes about 90 seconds before this message is seen.)
Open plastic Cover. Remove power to the Operators Workspace by shutting off the GOC breakers on the front of the PDU. See Figure 3.

Figure 3. Breaker Locations on PDU
Lock and Tag the Breaker Panel on the PDU.

Figure 4. Lock and Tag the Breaker Panel

At the front panel of the PDU, press the Power Off button.

Figure 5. Power Off button
Rotate the larger main breaker labeled INPUT counter-clockwise to the green, OFF (O) position.
Lock Out Tag Out the PDU “INPUT” circuit breaker.
1. Press on the left-pointing arrow on the end of the handle to expose the location where the lock and tag can be placed.
2. Lock and tag out the PDU “INPUT” circuit breaker.
  
  Figure 6. MAIN INPUT BREAKER IN THE OFF POSITION

Alert necessary personnel that power is being re-applied.
Remove the Lock and the Tag from the PDU “INPUT” circuit breaker.
Rotate the larger main breaker labeled INPUT clockwise to the Red, 1 ONposition.
Flip the circuit breaker for the Operators GOC ON.
Open plastic door over the front of the PDU breakers and power on any other appropriate circuit breakers, you may have turned off.
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