Hot End Audit Checklist | Container Glass | Lean Glass

Resource

Hot end audit checklist.

The 30-point checklist we run on day one of every hot-end audit. Use it as a self-audit before booking a real one — or as your daily Gemba walk reference.

Includes

30 audit checkpoints across 6 hot-end zones
Target spec for every item
"What good looks like" note for every item
Score-and-prioritise template

Score yourself — the 30 checkpoints

Tap ✓ for in-spec, ⚠ for "watch this one," ✗ for out-of-control. Your score lives only in this browser tab.

Self-score · 0 of 29 items reviewed

0%✓ 0 · ⚠ 0 · ✗ 0

A real Lean Glass audit goes deeper — this preview is the surface.

Gob weight stability, temperature uniformity, shear quality. The cheapest fix in the plant is upstream of the IS machine.

Gob weight coefficient of variation (CV) ≤ 0.4%
Target spec
CV measured across 30 consecutive gobs per section
What good looks like
Hourly CV check by gob inspector; auto-flag if 3 consecutive sections above 0.5%.
Gob temperature within ±5°C of recipe across all sections
Target spec
Thermal imaging on every shift handover
What good looks like
Forehearth set point logged at recipe load; gob temp captured per section every hour.
Shear marks visible only on <2% of inspected gobs
Target spec
Spray cooling verified per shear cycle; blade gap to spec
What good looks like
Shear maintenance schedule logged; spray nozzle pressure monitored.
Spout refractory wear within campaign limit
Target spec
Visual + thickness gauge weekly; replace at campaign-life threshold
What good looks like
Wear curve plotted; spare set ordered at 70% campaign life.
Feeder tube + orifice ring centred and within wear tolerance
Target spec
Centre check every job change; orifice ID measured monthly
What good looks like
Centring tool used and recorded at every job change.

This self-score lives only in your browser — nothing is sent to us. Use it as a Gemba-walk reference, then book a real hot end audit when you want the deep dive.

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