Mean Time Between Failures (MTBF) Calculation & Review Checklist

Boost manufacturing reliability & reduce downtime! Download our free MTBF Calculation & Review Checklist. Ensure accurate MTBF analysis, identify failure trends, & optimize equipment performance for a more efficient & profitable production line. #MTBF #Manufacturing #Reliability #Maintenance #Downtime #Checklist

This Template was installed 3 times.

Data Gathering & Preparation

1 of 7

Focuses on collecting the necessary data for accurate MTBF calculation and ensuring its quality.

Number of Units in Production

Operational Hours per Unit (per year)

Data Collection Period (e.g., Months, Years)

Description of Manufacturing Process (brief overview)

Equipment Bill of Materials (BOM)

Data Source(s) for Failure Data

Start Date of Data Collection

End Date of Data Collection

Failure Data Collection & Analysis

2 of 7

Details the process for collecting and analyzing failure data, including types of failures and root cause analysis.

Date of Failure Event

Time of Failure Event

Operating Hours at Time of Failure

Detailed Description of Failure Event

Failure Mode Category (e.g., Mechanical, Electrical, Software)

Affected Components (Select all that apply)

Root Cause Analysis Summary

Supporting Documentation (e.g., Photos, Logs)

Severity of Failure (Impact on Production)

MTBF Calculation Methodology

3 of 7

Covers the chosen MTBF calculation method and associated formulas/tools.

Chosen MTBF Calculation Method

Justification for Chosen Method

Number of Failures Used in Calculation

Total Operating Time (Hours)

Mean Failure Rate (λ) - if calculated

Description of any Assumptions Made

Spreadsheet or Software Used for Calculation (Optional)

Failure Data Correction Factors Applied?

MTBF Calculation & Validation

4 of 7

The step-by-step process of calculating MTBF and verifying its accuracy.

Total Operating Hours (Data Period)

Number of Failures (Data Period)

MTBF (Calculated)

Calculation Method Used (e.g., Basic, Exponential, Miner's)

Formula Used (Detailed)

Units of Time for MTBF (e.g., Hours, Days, Years)

Supporting Calculation Files (Spreadsheets, Documents)

Confidence Interval (Calculated)

Data Validity Review (Pass/Fail)

Review & Documentation

5 of 7

Covers the review of the calculated MTBF, ensuring it’s understood and documented appropriately.

Calculated MTBF Value (Hours)

Summary of Assumptions & Limitations in Calculation

MTBF Calculation Method Used

Date of MTBF Calculation

Reviewer Comments & Observations

Overall MTBF Result Assessment

Supporting Documentation (e.g., Failure Logs, Data Spreadsheets)

Reviewer Signature

Improvement & Corrective Actions

6 of 7

Focuses on identifying areas for improvement based on the MTBF review and implementing corrective actions.

Summarize Root Causes of Failures Affecting MTBF

Potential Corrective Actions (Select all that apply)

Estimated Cost of Corrective Action (in USD)

Target Completion Date for Corrective Action

Detailed Description of Planned Corrective Action

Risk Level of Proposed Corrective Action (High/Medium/Low)

Supporting Documentation (e.g., Engineering Change Orders, Test Reports)

Expected Improvement in MTBF (Estimate)

Calibration and Verification of Data Sources

7 of 7

Ensures the data used for MTBF calculation is accurate and reliable, validating the integrity of equipment logs and sensors.

Data Source Integrity Check Performed?

Last Calibration/Verification Date of Data Logging System

Calibration Frequency (e.g., months between calibrations)

Describe Calibration Procedure Used

Upload Calibration/Verification Documentation (e.g., reports)

Data Source Validation Method Employed?

Detailed notes/observations during data source verification (e.g., anomalies, discrepancies)

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