What Reliability Actually Means: The Four Elements Every Definition Must Contain
What is reliability engineering? Reliability is a probability with four mandatory elements: function, conditions, interval and probability. Explained simply.
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Practical guides to the foundations of good asset management, drawn from our work across the heavy asset industry and written for the engineers, planners and managers who apply them on site.
Reliability Engineering
16 guides
The Four Reliability Functions: R(t), F(t), f(t) and h(t) and How They Connect
The four reliability functions R(t), F(t), f(t) and h(t) explained from first principles, with the master relationship derived step by step.
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Life Data Fundamentals: Censoring, Suspensions and Getting Time-to-Failure Right
Censored data reliability analysis explained: the four censoring types, why suspensions must stay in the fit, and the gate that decides which method applies.
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The Weibull Distribution Explained: Beta, Eta and Gamma from First Principles
Weibull distribution beta eta explained from first principles: what beta and eta physically control, why eta is the 63.2% life in the two-parameter form, and when gamma applies.
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Weibull Probability Plotting: A Step-by-Step Method You Can Do by Hand
Weibull probability plotting step by step: the linearising transform, adjusted ranks for suspensions, Benard median ranks, and reading beta and eta by hand.
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Reading a Weibull Plot: Interpreting Beta, Fit Quality and Diagnosing Bad Weibulls
Interpreting Weibull plot beta, fit quality and diagnostics: recognise mixed failure modes, corner points, curvature and misleadingly high correlation.
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Parameter Estimation and Confidence Bounds: Median Rank Regression vs Maximum Likelihood
Compare median rank regression vs maximum likelihood Weibull estimation, small-sample beta bias, B-life confidence bounds and method disclosure.
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Weibayes and Substantiation Testing: Analysis When You Have Few or No Failures
Forty-eight tubes, four years, zero failures. Turning a clean run history into a defensible lower bound on characteristic life, and sizing a test to prove a target.
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Reliability Block Diagrams: Building System Reliability from Component Data
Turn component reliability into one system figure using series, active parallel, k-of-n and standby redundancy models.
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Availability: Inherent, Achieved and Operational
Understand the three availability definitions, their formulas and the organisational gaps between them.
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Fault Tree Analysis: Building and Quantifying a Fault Tree
Build from a precise top event to gates, minimal cut sets, quantified risk and ranked improvement actions.
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Optimal Replacement Interval: Turning Weibull Output into a Cost-Justified Task Frequency
Calculate a replacement interval from Weibull life data, cost terms and the sensitivity that moves the answer.
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Asset Criticality Analysis: The Prioritisation Foundation Every Asset Management Decision Depends On
Asset criticality analysis explained: build a consequence-based framework that drives maintenance strategy, spares, inspection and capital decisions.
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FMECA and RCM: An Integrated Approach to Developing Maintenance Strategy from First Principles
FMECA identifies what can fail and how severe it is. RCM decides what to do about it. Learn to write failure modes, functions and tasks with precision.
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Spare Parts Management in Heavy Asset Industries: Identification, Optimisation and Supply Chain Strategy
Spare parts management for mining and oil and gas: classify spares, size stock with EOQ and safety stock, and build a resilient supply chain strategy.
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Weibull or Crow-AMSAA: Choosing the Right Model, and Why a Planned Replacement Is Not a Failure
One gearbox, one hundred weeks, thirteen events and only eight of them failures. Choosing the model, fitting the trend, and testing whether the PM is doing anything.
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Fundamentals
4 guides
What Is an Asset Management System?
An asset management system governs physical assets from planning to disposal. Learn what ISO 55000 and ISO 55001 require, how the discipline is structured, and what it means in practice.
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Asset Management Maturity: What Each Level Actually Looks Like in Practice
Asset management maturity describes how an organisation actually makes asset decisions. See what each level looks like in practice and what moving up takes.
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Asset Lifecycle Management: Why Planning Across the Full Asset Life Changes Every Decision You Make
Asset lifecycle management shifts capital decisions from annual cost to whole-of-life value. Learn the phases, costs and disciplines that change outcomes.
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Asset Lifecycle Costing: Making Capital Investment Decisions That Hold Up to Scrutiny
How asset lifecycle costing turns capital investment decisions into evidence, using NPV, EAC, economic life and the data inputs a defensible model depends on.
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Asset Data
4 guides
Functional Location Hierarchies: A Foundation for Operational and Data Excellence
How a structured functional location hierarchy gives heavy asset operations reliable reporting, cleaner data and a foundation for cross-site benchmarking.
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Asset Classification: Asset Class, Types and Variations
A practical guide to asset classification: how asset class, type and variation give your operation one common asset language, from plant floor to boardroom.
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Equipment Hierarchy Development: An Anatomy of Asset Knowledge, Intelligence and Standardisation
How a strong equipment hierarchy turns a flat asset list into structured knowledge that drives reliability, standardisation and better maintenance decisions.
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CMMS Data Quality and Failure Code Integrity: Your Asset Analysis Is Only as Good as Your Records
CMMS data quality depends on structured failure codes, not free text. What ISO 55001 and ISO 14224 require, and how to build a failure code system that works.
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Asset Management System
4 guides
Asset Management Policy: The Governance Cornerstone Every Asset-Intensive Organisation Needs
A practical guide to writing an asset management policy: what it must contain, how to build one, how to adapt it by industry, and where it belongs in the business.
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The Strategic Asset Management Plan: Building Line of Sight from Organisational Objectives to Asset Decisions
How a strategic asset management plan (SAMP) translates organisational objectives into asset management objectives, what it must contain, and how to build one.
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The Asset Management Plan: Managing Every Asset Class with Certainty
What a genuinely useable Asset Management Plan covers for one asset class, from value and cost decisions through to delivery, data, people and risk.
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ISO 55001:2024: What Changed, What Works, What Is Missing
ISO 55001:2024 revised the international standard for asset management systems after a decade of global implementation experience. Understand what changed from the 2014 version, what works, where the gaps remain, and the transition roadmap for moving ISO 55001:2014 certificates to the 2024 edition by 31 July 2027.
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