Key Review Focus Items
1. **TUS (Temperature Uniformity Survey)**
• Whether within the valid period
• Compliance of test thermocouple number and positions
• Coverage of tested temperatures against actual usage range
2. **SAT (System Accuracy Test)**
• Frequency of execution per specifications
• Documentation of corrective actions for exceedances
• Integrity and traceability of calibration chain
3. **Thermocouple Management**
• Strict adherence to Type U thermocouple scrapping rules
• Compliance of precious metal thermocouple calibration intervals
• Matching of compensation wires to thermocouple type
4. **Data Integrity**
• Completeness of temperature curve records
• Availability of audit trail functionality
• Tamper-proof data assurance
5. **Equipment Calibration**
• All measuring devices within valid calibration period
• Calibration certificates traceable to national standards
• Calibration range covering actual operating conditions
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