Work Order and Safety Procedures

Work Order Creation and System Navigation

• The user creates a work order in Maximo, ensuring all details are correct.
• The system used might involve CWEI or CWE, but processing can take up to two hours.
• After creating the work order, the user navigates to iRamp to proceed.

Clearance Process

• Initial clearance status shows "NNN," indicating no clearance is established.
• The user initiates clearance by creating an ad hoc clearance.
• The user inputs their initials (TLU - Torben Leif Olsen) to identify the clearance request.
• The hazard is identified as electrical.

Isolation Device

• The pump breaker in the AC cabinet is selected as the isolation device.

Inverter Safety and Grounding

• A complex explanation regarding inverters and grounding is provided.
• The AC cabinet has a high calorie rating (100 cal), requiring special considerations.
• Shutting down the transformer necessitates grounding if it's used as an isolation device.
• A form from the electrical safety team dictates when grounding is necessary.
• If the transformer is only shut down to access the AC cabinet and the breaker is the isolation point, grounding may not be required.
• Grounding is mandatory if working on main reactors or AC breakers.

Maintenance Mode vs. Manual Mode

• Maintenance mode radically lowers voltage limits and increases trip speed in the substation to lower arc flash potential.
• Maintenance mode is controlled from the substation.
• Manual mode is different and comes from SCADA, signaling that someone is working on the equipment and should not be touched remotely.
• A widespread misconception exists regarding maintenance mode.
• Maintenance mode stickers have been removed in some locations due to the confusion and elimination of maintenance modes in certain substations.
• It's crucial to differentiate between maintenance mode and manual mode.
• Manual mode informs the ROCC (Remote Operations Control Center) not to interfere with the equipment.

Practical Steps Despite Manual Mode

• Even in manual mode, workers still need to physically turn off and lock out equipment to prevent remote overrides.

Additional Isolation Steps

• DC breakers are also isolated to access cabinets for leak verification, specifically the phase module cabinet.