Heat-Soak Test Cycle Log for Tempered Glass

Inspection log for recording heat-soak oven cycles, batch traceability, and post-cycle outcomes for fully tempered glass to help reduce spontaneous breakage associated with nickel sulfide inclusions.

Inspection Details

• Inspection date and time
• Inspector name and role
• Facility, line, or oven ID
• Reference SOP or work instruction
• Batch or lot number

Glass Batch Identification and Load Details

• Glass product description
• Glass thickness
• Number of panes or lites loaded
• Batch identification method verified
  Confirm each load is traceable to a specific batch, lot, or production run.
• Load map or rack position recorded

Oven Cycle Parameters

• Preheat temperature setpoint
• Actual oven temperature at start
• Target dwell time
• Actual dwell time completed
• Temperature uniformity within oven load zone

Cycle Monitoring and Safety Controls

• Oven door interlocks and safety guards functional
• Overtemperature alarm tested and operational
• Recorded cycle start and end timestamps match log
• PPE used during loading and unloading

Post-Cycle Outcomes and Deficiencies

• Breakage observed during or after cycle
  Record whether any panes fractured during the heat-soak cycle or during unloading/cooldown.
• Number of panes broken
• Visible defects or non-conformances noted
  Document any warping, edge damage, label mismatch, contamination, or other non-conformance.
• Disposition of tested batch

Corrective Actions and Sign-Off

• Corrective action required
  Indicate whether any deviation, failure, or non-conformance requires follow-up action.
• Corrective action details
• Supervisor or quality approval