An electric arc furnace pulls tens of thousands of amps through three graphite electrodes to melt scrap in under an hour, and that same power is what turns a small cooling panel leak or a worn electrode clamp into an unplanned outage fast. Sign up to turn this checklist into a recurring digital inspection your EAF crew runs every shift.
5 Systems
Core EAF systems needing their own routine: electrodes, transformer, cooling, charging, off-gas
1.5-2.5 kg
Typical graphite electrode consumption per ton of steel produced
Every Heat
Recommended frequency for cooling panel flow and electrode clamp checks
High Voltage
Lockout-tagout required before any transformer or electrode arm inspection
Why EAF Inspections Can't Wait for a Trip
A water-cooled roof panel that starts leaking mid-heat can force an emergency shutdown with molten steel still in the vessel, and a transformer running hot for days before anyone notices rarely fails gently. Consistent, shift-by-shift checks on electrodes, cooling water, and the charging system catch these issues while they're still a work order, not an incident report.
Daily Inspection Checklist
| System |
What to Check |
| Electrodes and clamps |
Electrode tip wear, clamp contact pressure, and signs of arcing at the connection |
| Transformer |
Oil temperature and level, tap changer position, and cooling fan operation |
| Water-cooled panels |
Inlet and outlet flow rate, water temperature rise, and any visible leak points |
| Charging equipment |
Bucket latch mechanism, crane hoist cables, and roof lift cylinder seals |
| Off-gas system |
Duct temperature, damper operation, and baghouse differential pressure |
Move This Checklist Off Paper and Onto a Tablet
Oxmaint runs this exact EAF checklist as a mobile route your crew completes every shift, with a failed cooling panel or electrode check converting instantly into a prioritized work order. Sign up for a free trial and load your first furnace checklist, or book a demo to see it configured for your EAF.
Weekly and Scheduled Checks
| Frequency |
Inspection Task |
| Weekly |
Transformer oil sample analysis for dissolved gas and moisture content |
| Weekly |
Hydraulic system pressure test on tilting and electrode arm cylinders |
| Monthly |
Full electrical inspection of bus bars, flexible conductors, and secondary circuit connections |
| Relining interval |
Complete refractory reline with roof and delta inspection for hot spots |
Reactive Response vs Checklist-Driven Inspection
Reactive Response
A cooling panel leak is discovered mid-heat, forcing an emergency shutdown
Electrode clamp wear goes unnoticed until arcing damages the arm
Transformer oil degradation is only caught after a trip on high temperature
Checklist-Driven Inspection
Cooling flow deviations are caught during the pre-heat check every shift
Clamp pressure and contact wear are logged and trended heat over heat
Oil sample trends flag degradation weeks before a temperature trip occurs
Safety Requirements Before Every Inspection
Confirm full electrical lockout-tagout on the transformer and electrode circuit before any close-range clamp or bus bar inspection, drain residual water pressure before opening a cooling panel connection, and never approach the vessel roof without confirming it is fully de-energized and the crane is locked out.
Frequently Asked Questions
Q
What causes most unplanned EAF downtime?
Water-cooled panel leaks and electrode clamp failures are among the most common causes, since both can force an emergency shutdown mid-heat if they aren't caught during a pre-heat inspection.
Q
How often should transformer oil be tested?
Weekly dissolved gas and moisture analysis is standard practice, since gradual oil degradation is one of the earliest indicators of an insulation or cooling problem developing inside the transformer.
Q
Can this checklist run on a mobile device on the shop floor?
Yes. A CMMS mobile checklist lets crew log each check point against the furnace asset record between heats, with any failed item automatically generating a work order instead of waiting on a paper form to reach the maintenance office.
Give Your EAF Crew a Checklist That Follows Up on Its Own
Oxmaint turns this exact EAF inspection checklist into a recurring mobile route, with failed checks converting instantly into prioritized work orders. Sign up for a free trial and load your first furnace checklist, or book a demo to see it built around your EAF.
