Home / Maintenance
MTBF, MTTR, availability and reliability, life data analysis with Weibull, lognormal and exponential (B10, warranty), equipment redundancy and FMEA with RPN and Action Priority.
Calculate MTBF, MTTR, failure rate, inherent availability and the probability of running without failure, with a Weibull fit from times between failures and B10 life.
Failure rate, R(t), Weibull, B10Analyzes how long a component lasts before failing, even when some units have not failed yet, and turns it into B10 life, warranty risk and a test plan. Paste times to failure and the units still running (censored) to get the Weibull, lognormal, exponential or normal fit by maximum likelihood or LSXY, the probability plot with CI, distribution identification, B10 life and MTTF with intervals, Kaplan-Meier, supplier or lot comparison, expected warranty failures and a demonstration test plan.
Censored Weibull, B10, warrantyCompare 1-of-1, 1-of-2, 2-of-3 and other arrangements by availability and downtime hours, including common cause failure, and calculate the payback of a standby pump or compressor.
Standby, k-out-of-n, common cause, paybackPaste your FMEA sheet with severity, occurrence and detection to compute RPN and the AIAG-VDA 2019 Action Priority, see the Pareto, the S × O matrix and the effect of improvement actions.
RPN, high/medium/low AP, ParetoTracks whether rare defects, breakdowns or accidents are becoming more or less frequent by measuring the interval between them. For rare events, where a P or U chart would show almost only zeros: paste the event dates or the amounts between them and get the G (geometric) or T (Weibull or exponential) chart with probability limits, tests for special causes, cumulative events against expected, distribution fit, report card and annual cost.
Time between rare eventsA fishbone (Ishikawa, or cause-and-effect) diagram helps the team list, organize and prioritize every possible cause of a problem before acting, so it does not just chase the first idea. List the causes by category (6M or your own categories) with sub-causes, votes and status, and the page draws the fishbone automatically, highlights the prioritized causes, builds the Pareto of causes, records the 5 whys down to the root cause and exports PNG, SVG and A4 landscape PDF.
Cause and effect, 6M, 5 whysA Pareto chart sorts problems from largest to smallest and shows which few causes account for most of the defects, stoppages or costs, so you know where to start. Paste the categories with their counts (or the list of occurrences) and the page draws the Pareto chart with the cumulative curve and cut-off line, points out the vital few, groups “Other”, compares frequency vs cost, Pareto by stratum and before vs after, and exports PNG, one-page PDF and xlsx.
Vital few, 80/20, cost, strataImportant notice: Indus Metrics tools produce estimates and pre-sizing results from the data you enter and from published engineering methods. They do not replace design, calculations or reports signed by a licensed professional engineer (PE), nor verification against the applicable codes, standards and regulations, such as OSHA rules and the ASME codes. Material and fuel properties vary: check manufacturer data or your own process analyses before deciding. By using this site you agree to the Terms of Use.
© 2026 Indus Metrics. Found an error? Write to contato@seudominio.com.