Reliability Engineer Notes on iPhone: Failure Modes, RCA Findings & Maintenance Strategy Records

Reliability engineering is the discipline of making systems fail less — or fail predictably when they do fail. The work is fundamentally knowledge-based: understanding failure modes, correlating operating conditions to failure rates, and building maintenance strategies calibrated to actual failure behavior rather than arbitrary time intervals. That knowledge must be captured somewhere it can be retrieved, updated, and applied across equipment types and facilities. Nemos provides that foundation.

Why Reliability Engineers Need Better Documentation

The reliability knowledge problem is acute: equipment failure modes accumulate over years of operation, but the engineers who observed and diagnosed early failures may have moved on. What's left is either a computerized maintenance management system (CMMS) with work orders but no root cause, or an experienced technician whose knowledge retires when they do.

Nemos captures the engineering knowledge layer — the why and how behind failures and strategy decisions — that CMMS work orders never record.

What to Capture in Nemos

Failure Mode Observations When equipment fails, document: - Equipment identifier and description - Operating conditions at time of failure (load, temperature, speed, media) - Failure mode observed (fatigue, wear, overload, corrosion, fouling, contamination) - Failure location and morphology - Time since last maintenance or overhaul - Any warning signs in condition monitoring data before failure

These observations are the raw material for FMEA updates and maintenance strategy revision.

Root Cause Analysis Records For each formal RCA: - Problem statement (specific, measurable) - Causal factor chain - Root cause determination (physical, human, latent) - Contributing factors - Corrective actions recommended and assigned - Verification that corrective actions were effective

An indexed library of RCA findings across equipment types is one of the most valuable assets a reliability program can have.

FMEA and Maintenance Strategy Notes Document strategy decisions and the reasoning behind them: - Equipment and function - Failure mode and failure effect - Current prevention task and interval - Basis for interval (failure data, manufacturer recommendation, experience) - Any recent failure that prompted interval revision

When equipment fails and the question is "why weren't we maintaining this?" — your strategy note provides the answer with engineering reasoning, not just a task list.

Condition Monitoring Observations For vibration analysis, thermography, oil analysis, and ultrasound: - Measurement date and equipment identifier - Key indicator results (bearing frequency amplitudes, oil viscosity change, thermal anomaly location) - Trend relative to prior readings - Action recommended based on condition assessment

Log the interpretation, not just the raw data. The vibration spectrum file is in the analyzer; Nemos captures your engineering judgment about what it means.

Equipment History Notes For critical equipment, maintain a running history note: - Installation date and baseline condition - Major maintenance events and findings - Significant failures and root causes - Current condition assessment

This history is what enables remaining useful life assessment and turnaround planning.

Building Failure Mode Libraries

Accumulate a note per equipment type — centrifugal pumps, gearboxes, rolling element bearings, mechanical seals — documenting the failure modes you've actually observed on that type in your facility and environment. This library is more relevant than generic handbooks because it reflects your actual operating conditions.

FAQ

How does Nemos fit alongside our CMMS? They complement each other. CMMS tracks work orders, costs, and schedules. Nemos captures engineering analysis — root causes, strategy decisions, failure mode observations — that CMMS work orders don't have fields for.

Can I share notes with maintenance technicians? Export relevant failure mode notes as text for posting in the field or attaching to job plans. The knowledge transfer from engineer to technician is a reliability program multiplier.

How do I organize notes across a large facility with hundreds of equipment items? Use equipment identifiers in note titles — consistent with your CMMS tag numbers. Tags by equipment class (rotating, static, electrical, instrument) and criticality tier keep the library navigable.

Is Nemos useful for turnaround planning? Yes — your equipment history and condition monitoring notes are the input to turnaround scope development. Past findings drive next-turnaround inspection points and replacement decisions.

How do I handle proprietary failure data from equipment manufacturers? Keep notes at the level of failure mechanisms and general operating conditions. Manufacturer-proprietary specifications belong in your technical library, not in your mobile notes.

Why not just use the work order narrative field? Work order narratives are searched by work order number, not by failure mode or equipment type. Nemos lets you find all bearing failures across a plant by searching "bearing" — across years of documented events.

Related Reading

• /blog/quality-control-inspector-notes-iphone — systematic inspection and measurement documentation
• /blog/materials-engineer-notes-iphone — failure analysis documentation and material characterization records
• /blog/industrial-mechanic-notes-iphone — equipment maintenance observation and repair documentation
• /blog/safety-officer-notes-iphone — incident investigation and corrective action documentation

Sources

• Reliability-centered maintenance methodology: MSG-3 and MIL-HDBK-2173 foundational references
• Root cause analysis practice: TapRooT Root Cause Analysis System (System Improvements Inc.)

Download Nemos free on the App Store.