Monthly Furnace Inspection Checklist — Sample
Heating System
Heating element resistance — record and compare to baseline
Thermocouple calibration status — check against schedule
Gas Train
Valve proving system (VPS) test — pass/fail
Gas train tightness test — record pressure drop
Refractory
Visual inspection — cracks, spalling, brick displacement
Door seal condition — replace if worn or lifting
Cooling System
Cooling water flow rate — check against minimum specification
Inlet/outlet temperature differential — record
Full checklist (40+ items) and digital sign-off available with a free account
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Maintenance Intervals Covered

Frequency Key Tasks
Daily Atmosphere, temperatures, alarm log, visual
Weekly Door seals, drive, cooling water, burner
Monthly Elements, gas train, refractory, VPS test
Quarterly SAT (AMS 2750), TC calibration check
6-Monthly TUS survey, full gas safety inspection
Annual Full shutdown: refractory, elements, wiring

Furnace Types Supported

  • Batch heat treatment furnaces — gas and electric
  • Vacuum furnaces — graphite and molybdenum hot zones
  • Continuous belt, pusher, and roller hearth furnaces
  • Controlled atmosphere furnaces (endogas, N₂/methanol)
  • Salt bath furnaces and fluidised bed systems
  • Bell annealing and cover annealing furnaces

Why Structured Furnace Maintenance Matters

Unplanned furnace downtime costs far more than planned maintenance. A failed heating element during an aerospace hardening run means scrapped parts, customer notification, and emergency repair costs. A cracked door seal causes atmosphere loss, uncontrolled decarburisation, and failed metallurgical results. Structured PM catches these problems before they become production failures.

For AMS 2750 and CQI-9 compliant facilities, maintenance records are also an audit requirement. Our digital checklists generate time-stamped, signed-off records suitable for inclusion in your quality management system — reducing the paperwork burden on your engineering team.

Digital Maintenance Checklists — Free

Access 40+ item checklists for every maintenance interval. Complete on mobile or desktop, export to PDF for your records.

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Related: Vacuum Furnace Tool · AMS 2750 Tool · All Tools · Maintenance Planning Guide