Domain 01
Maintenance & Reliability
Keep assets running: failure rates, criticality, backlog, spares and the electrical checks that keep maintenance work safe.
Standards referenced: EN 13306 · EN 13460 · EN 15341 · SMRP · SAE JA1011/JA1012 · Weibull
Calculators
MTBF / MTTR / Availability
Reliability, maintainability and uptime from your failure history.
CalculatorWeibull Reliability Calculator
Reliability, failure probability and B10 life from shape & scale.
CalculatorAsset Criticality Calculator
Score and rank assets by risk to focus your maintenance strategy.
CalculatorCMMS ROI Calculator
Justify maintenance software with downtime, labour and spares savings.
CalculatorMaintenance Backlog Calculator
Weeks of ready backlog — the classic SMRP health indicator.
CalculatorSpare Parts EOQ Calculator
Economic order quantity that minimises ordering + holding cost.
CalculatorMaintenance Cost as % of RAV
Benchmark total maintenance spend against asset replacement value.
CalculatorSystem Reliability Calculator (RBD)
Series, parallel and k-out-of-n reliability — the Reliability Block Diagram math from paid tools.
CalculatorBearing Life (L10) Calculator
ISO 281 rating life — L10 in revolutions, hours and years from load and speed.
CalculatorVibration Severity (ISO 10816/20816)
Classify machine vibration into zones A–D — the condition-monitoring verdict, free.
CalculatorInventory Carrying Cost Calculator
The hidden tax on your MRO storeroom — what holding that inventory really costs per year.
CalculatorVoltage Drop Calculator
Cable voltage drop in volts and %, plus the voltage left at the load — copper or aluminium, 1- or 3-phase.
CalculatorTransformer Loading Calculator
% loading, spare capacity, full-load amps and operating amps for a distribution transformer.
CalculatorArc Flash Incident Energy Estimator
Explore Lee-model sensitivity for education; it does not select PPE or establish an arc-flash work boundary.
Document generators
Guides
Reliability-Centered Maintenance (RCM) Explained
A standards-grounded guide to reliability centered maintenance: the 7 RCM questions, failure consequences, SAE JA1011 decision logic, and how to start.
GuidePredictive Maintenance: Technologies, ROI & Setup
A practical guide to predictive maintenance technologies, condition monitoring, PdM ROI math and a step-by-step rollout plan for reliability teams.
GuidePreventive vs Predictive Maintenance Compared
Preventive vs predictive maintenance compared: definitions, pros, cons, cost curves, and how to mix reactive, preventive, PdM and prescriptive by criticality.
GuideMaintenance KPIs: 15 Metrics That Matter (EN 15341)
A standards-grounded guide to the maintenance KPIs that matter: MTBF, MTTR, availability, OEE, PM compliance, wrench time, backlog and % RAV, with formulas.
GuideEAM vs CMMS: Which System Do You Actually Need?
EAM vs CMMS explained by reliability engineers: real scope differences, SaaS pricing ranges, ISO 55001 fit, and a decision framework to pick the right system.
GuideBest CMMS Software 2026: Buyer's Guide
Compare the best CMMS software in 2026: Limble, MaintainX, UpKeep, Fiix, eMaint and IBM Maximo. Features, pricing tiers, deployment and how to choose.
GuideCMMS Software Pricing: How Much Does It Cost in 2026?
CMMS software pricing in 2026 runs $20-$200+ per user/month. See real tier ranges, hidden implementation costs, total cost of ownership, and budget tips.
GuideArc Flash Study Cost & Process (NFPA 70E Guide)
What an arc flash study costs, who needs one, and the IEEE 1584 process step by step. Real price ranges, NFPA 70E compliance, and how to budget smart.