Calibration Documents: Dry Heat Sterilizer Temp Sensor (CAL-0153)
| Asset ID | CAL-0153 |
|---|---|
| Equipment | Dry Heat Sterilizer Temp Sensor |
| Equipment Type | Dry Heat Sterilizer |
| Department | Microbiology |
| Area/Location | Sterilization |
| Process Use | Depyrogenation |
| Parameter | Temperature |
| Units | °C |
| Range Min | 150 |
| Range Max | 300 |
| Acceptance Criteria | ±1°C |
| Calibration Frequency (days) | 180 |
| Calibration Type | External |
| Traceability | ISO17025 |
Table of Contents
Calibration SOP
1. Purpose
The calibration of the Dry Heat Sterilizer Temperature Sensor (CAL-0153) is performed to ensure accurate temperature measurements during the depyrogenation process. This calibration controls risks associated with patient safety, batch quality, and data integrity by ensuring that the equipment operates within specified limits.
2. Scope
- Asset ID: CAL-0153
- Equipment Name/Type: Dry Heat Sterilizer Temp Sensor / Dry Heat Sterilizer
- Department/Area: Microbiology / Sterilization
- Process Use: Depyrogenation
- Parameter: Temperature
- Range: 150°C to 300°C
- Units: °C
- Calibration Frequency: Every 180 days
3. Definitions
- Calibration: The process of determining the accuracy of a measurement device by comparing it to a known standard.
- Verification: The process of confirming that a measurement device meets specified requirements.
- Adjustment: The process of altering a measurement device to bring it into compliance with specified standards.
- As Found: The condition of the equipment prior to any adjustments being made.
- As Left: The condition of the equipment after adjustments have been made.
- OOT (Out of Tolerance): A condition where the measurement falls outside the established acceptance criteria.
- Drift: The gradual change in the accuracy of a measurement device over time.
- Traceability: The ability to verify the history, location, or application of an item by means of documented recorded identification.
- Measurement Uncertainty: A parameter that characterizes the range of values within which the true value of a measurement lies.
- Intermediate Check: A periodic check performed between calibrations to ensure continued accuracy.
4. References
- Company Metrology SOP [TBD]
- ISO/IEC 17025 traceability via calibration certificates
- ALCOA+ principles
5. Responsibilities
- Technician/Metrology: Perform calibration and document results.
- QC/QA Reviewer: Review calibration documentation and results.
- Owner Department: Ensure equipment is available and in good condition for calibration.
- External Service Provider: Conduct external calibration as required.
6. Safety & Preconditions
- Ensure environmental controls are in place (temperature, humidity).
- Allow equipment to warm-up and stabilize as per manufacturer guidelines.
- Maintain cleanliness of the equipment and surrounding area.
- Check that the equipment is level and properly positioned.
- Verify power supply is stable and within specifications.
7. Standards & Tools
- Reference standards required: [TBD]
- Traceability statement: ISO17025
- Certificate validity check: [TBD]
- Standard ID placeholders: [TBD]
8. Calibration Strategy
The calibration will follow the As Found and As Left logic. A minimum of 5 measurement points will be taken, including endpoints (150°C and 300°C) and midpoints. Each point will have 3 replicate readings to ensure accuracy.
9. Step-by-Step Procedure
- Preparation: Gather all necessary tools and standards.
- Stabilization: Allow the equipment to reach operating conditions.
- As Found checks and data capture: Measure temperature at defined points and record results.
- Adjustment rules: If any readings are OOT, escalate for adjustment as per SOP.
- As Left verification: Re-measure to confirm adjustments are within acceptance criteria.
- Labeling + documentation completion: Complete all required documentation and label the equipment.
Record all raw observations contemporaneously to ensure data integrity (ALCOA+).
10. Acceptance Criteria & Calculations
Acceptance criteria: ±1°C from the target temperature. The error calculation formula is:
Error = Observed Value – True Value
Pass/Fail logic: If the absolute value of the error is within acceptance criteria, the result is a pass; otherwise, it is a fail.
Rounding rule: [TBD]
11. Handling OOT / Failures
- Immediate containment: Tag equipment and stop use.
- Notification & deviation initiation: Notify QA and document the deviation.
- Impact assessment trigger: Define impact window and review of affected results/batches.
- Recalibration after repair/adjustment: Schedule recalibration as necessary.
- QA disposition placeholders: [TBD]
12. Records & Retention
- Logbook entries: Document all calibration activities.
- Calibration report/certificate filing: Maintain records as per company policy.
- e-Records if applicable: [TBD]
- Label content requirements: Calibrated date, due date, by whom, status.
13. Annexures
Annexure A: Calibration Data Sheet
| Test Points | Reference | Observed | Error | Acceptance | Pass/Fail | As Found | As Left |
|---|---|---|---|---|---|---|---|
| [TBD] | [TBD] | [TBD] | [TBD] | [TBD] | [TBD] | [TBD] | [TBD] |
Annexure B: Quick Checklist
- Environmental controls verified
- Equipment warm-up completed
- Cleanliness checked
- Leveling confirmed
- Power supply stable
Annexure C: Example Label Text
Calibration Date: [TBD]
Due Date: [TBD]
Calibrated By: [TBD]
Status: [TBD]
Calibration Protocol
Calibration Protocol
| Protocol ID | Asset ID | Equipment Name | Equipment Type | Dept | Area | Process Use | Parameter | Units | Range | Acceptance Criteria | Frequency | Calibration Type | Traceability |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| [TBD] | CAL-0153 | Dry Heat Sterilizer Temp Sensor | Dry Heat Sterilizer | Microbiology | Sterilization | Depyrogenation | Temperature | °C | 150 – 300 | ±1°C | 180 days | External | ISO17025 |
Environmental Conditions
Temperature: [TBD]
Relative Humidity: [TBD]
Vibration: [TBD]
Drafts: [TBD]
Test Point Selection
Test points will be selected based on the following range:
- Minimum: 150°C
- 25% of Range: 187.5°C
- 50% of Range: 225°C
- 75% of Range: 262.5°C
- Maximum: 300°C
Results Table
| Test Point | Ref Value | Observed (As Found) | Error | Limit | Pass/Fail | Observed (As Left) | Error | Pass/Fail |
|---|---|---|---|---|---|---|---|---|
| 150°C | [TBD] | [TBD] | [TBD] | ±1°C | [TBD] | [TBD] | [TBD] | [TBD] |
| 187.5°C | [TBD] | [TBD] | [TBD] | ±1°C | [TBD] | [TBD] | [TBD] | [TBD] |
| 225°C | [TBD] | [TBD] | [TBD] | ±1°C | [TBD] | [TBD] | [TBD] | [TBD] |
| 262.5°C | [TBD] | [TBD] | [TBD] | ±1°C | [TBD] | [TBD] | [TBD] | [TBD] |
| 300°C | [TBD] | [TBD] | [TBD] | ±1°C | [TBD] | [TBD] | [TBD] | [TBD] |
Stepwise Instructions
- Preparation: Ensure that the Dry Heat Sterilizer is clean and operational. Verify that the temperature sensor is calibrated and functioning.
- Stabilization: Allow the equipment to stabilize at the operating temperature for at least 30 minutes before taking measurements.
- Performing Readings: Take three replicate readings at each test point to ensure accuracy.
- Calculating Error: Calculate the error for each observed value by subtracting the reference value from the observed value.
- Evaluation: Compare the calculated error against the acceptance criteria of ±1°C.
- Documentation: Record all observations and calculations in the results table.
Deviation Instruction for OOT
If any observed value falls outside the acceptance criteria:
- Stop use of the equipment immediately.
- Notify the QA department.
- Open a deviation report.
- Quarantine the impacted results window: [TBD]
- Await QA decision on further actions.
Approvals
| Prepared | Reviewed | Approved |
|---|---|---|
| [Signature/Date] | [Signature/Date] | [Signature/Date] |
Calibration Checklist
| Asset ID | Equipment | Dept | Area | Parameter | Range | Acceptance | Frequency | Traceability |
|---|---|---|---|---|---|---|---|---|
| CAL-0153 | Dry Heat Sterilizer Temp Sensor | Microbiology | Sterilization | Temperature | 150 – 300 °C | ±1°C | 180 days | ISO17025 |
Pre-calibration
- [ ] Verify environmental conditions are within specified limits
- [ ] Ensure equipment has been warmed up as per SOP
- [ ] Clean the equipment as per cleaning procedures
- [ ] Level the equipment if applicable
- [ ] Confirm reference standards are valid and calibrated
- [ ] Ensure calibration logbook is ready for entries
As Found Execution
- [ ] Record initial setpoints of the temperature sensor
- [ ] Perform repeat measurements as per protocol
- [ ] Record all raw data accurately
- [ ] Perform necessary calculations for analysis
OOT Immediate Actions
- [ ] Tag out the equipment if out of tolerance (OOT)
- [ ] Stop use of the equipment immediately
- [ ] Notify the relevant personnel of the OOT condition
- [ ] Document the deviation in the logbook
- [ ] Trigger an impact review as per SOP
As Left Verification
- [ ] Perform post-adjustment checks to confirm accuracy
- [ ] Ensure all measurements are within specified limits
Documentation & Closure
- [ ] Update equipment label with new calibration date
- [ ] Attach calibration certificate to the logbook
- [ ] Obtain reviewer sign-off on calibration records
- [ ] Update next due date in the logbook
Deviation Impact Assessment
| Event Summary |
|---|
|
Asset: Dry Heat Sterilizer Temp Sensor Date: [TBD] Discovered By: [TBD] Document References: [TBD] As Found Results Summary: [TBD] |
Immediate Containment Checklist
- Stop use of the asset
- Label/Tag the asset as out of service
- Segregate impacted work
Define Impact Window
| Last Known In-Tolerance Date | Discovery Date |
|---|---|
| [TBD] | [TBD] |
Product/Batch/Test Impact Review
| Batch/Study/Report ID | Results Potentially Impacted | Re-test/Re-weigh Decision |
|---|---|---|
| [TBD] | [TBD] | [TBD] |
Data Integrity Review Prompts (ALCOA+)
- Attributable: [TBD]
- Legible: [TBD]
- Contemporaneous: [TBD]
- Original: [TBD]
- Accurate: [TBD]
- Complete: [TBD]
- Consistent: [TBD]
- Enduring: [TBD]
- Available: [TBD]
Risk Assessment
| Severity | Probability | Detectability | Rationale | Overall Risk |
|---|---|---|---|---|
| [TBD] | [TBD] | [TBD] | [TBD] | [TBD] |
Investigation Summary
Summary of investigation findings: [TBD]
Root Cause: [TBD]
CAPA Plan
| Action | Owner | Due Date | Effectiveness Check |
|---|---|---|---|
| [TBD] | [TBD] | [TBD] | [TBD] |
QA Disposition
Release/Hold/Retest/Recall Triggers: [TBD]
Calibration Certificate
Certificate No: [TBD]
Date: [TBD]
Next Due Date: [TBD]
Asset Details
| Asset ID | Equipment Name | Equipment Type | Dept | Area | Make/Model | Serial No | Location | Parameter/Range/Units | Acceptance Criteria |
|---|---|---|---|---|---|---|---|---|---|
| CAL-0153 | Dry Heat Sterilizer Temp Sensor | Dry Heat Sterilizer | Microbiology | Sterilization | [TBD] | [TBD] | [TBD] | Temperature: 150 – 300 °C | ±1°C |
Conditions
Environment: [TBD]
Reference Standards
| Standard Name/ID | Certificate No | Due Date | Traceability Statement |
|---|---|---|---|
| [TBD] | [TBD] | [TBD] | Traceability to ISO17025 |
Results
As Found Results
| Test Point | Measured Value (°C) | Pass/Fail |
|---|---|---|
| 1 | [TBD] | [TBD] |
| 2 | [TBD] | [TBD] |
| 3 | [TBD] | [TBD] |
| 4 | [TBD] | [TBD] |
| 5 | [TBD] | [TBD] |
As Left Results
| Test Point | Measured Value (°C) | Pass/Fail |
|---|---|---|
| 1 | [TBD] | [TBD] |
| 2 | [TBD] | [TBD] |
| 3 | [TBD] | [TBD] |
| 4 | [TBD] | [TBD] |
| 5 | [TBD] | [TBD] |
Measurement Uncertainty Statement: [TBD]
Statement of Conformity: [Pass/Fail overall]
Remarks: [TBD]
Signatures
Performed by: ______________________ Date: __________
Checked by: ______________________ Date: __________
Approved by: ______________________ Date: __________