ReliaSim Sequence

Six steps from production graph
to confident decisions

Your historian shows what happened. ReliaSim shows what will happen—revealing the leverage points traditional analysis systematically misses.

Validated within 1% OEE accuracy — Tom Lange, 36 years P&G

🏭 Built for high-speed manufacturing
📐 Competing risk framework
Within 1% OEE accuracy
15-minute model construction
🎯 Plant manager–operable
The Six-Step Sequence

A structured path to production intelligence

Each step builds on the last. Skip one, and your predictions lose their foundation.

Step One

Capture what is. Prepare for what if.

Set your scope. Establish rates and conversions. Mark where decoupling exists today — and place zero-capacity buffers where it could exist tomorrow. Your Perfect Production pops right out as the OEE denominator.

  • Define every unit operation and the flow between them
  • Set nominal production rates and conversion ratios at each node
  • Mark buffer positions — current and potential — as structural degrees of freedom
  • Perfect Production appears instantly: the theoretical max for your scope
so that you know your scope, your decoupling, and your theoretical max
Step Two

Choose your shape-tuples

A graph without failure behavior is just a flowchart. Each machine needs its interrupts characterized — not just the mean downtime, but the shape of its failure distribution. The shape determines the through-time behavior. You don't always draw the mean.

  • Choose uptime and downtime distribution shapes for each interrupt
  • Same mean, different shapes = different tapes = different system behavior
  • Each machine can have multiple interrupts — its own ensemble
  • Parameterize with ReliaStats for statistically validated inputs
so that it captures production line stops with high fidelity
Step Three

Simulate your baseline model

Run your model as-is, with no changes. Watch how production behaves through time—where flow stalls, where buffers empty, where throughput is lost before it ever appears in your Loss Tree.

  • Observe buffer levels rising and falling through the shift
  • Identify primary and secondary bottlenecks as they emerge
  • See cascade effects: how a jam at one station affects three others
  • Generate OEE and throughput distributions across replications
so that you can see production behavior through time
Step Four

Validate your baseline model

Simulation is only as valuable as its credibility. Validation closes the gap between model output and historical reality—giving you the confidence to act on predictions rather than hedge against them.

  • Compare predicted OEE to historian data within ±1% accuracy
  • Verify that stop frequencies and durations match operational records
  • Tune distribution parameters with ReliaStats when gaps appear
  • Lock the validated baseline as the reference for all experiments
so that you can make confident predictions
Step Five

Experiment with your model

This is where traditional analysis fails and ReliaSim shines. With a validated model, you can test changes before spending a dollar—and discover that your true leverage points are rarely where your Loss Tree says they are.

  • Eliminate failure modes and measure full-system impact, not just direct downtime
  • Compare buffer expansion vs. equipment upgrade on equal statistical footing
  • Test speed trade-offs: sometimes running slower produces more
  • Rank projects by validated OEE gain, not spreadsheet estimates
so that you can know your true leverage points
Step Six

Make confident decisions

The sequence ends where the business begins. Armed with validated predictions and ranked experiments, you move from strategic uncertainty to strategic intelligence—committing capital where the model says it belongs.

  • Present improvement projects with within 1% validated ROI projections
  • Defend capital requests with simulation data, not intuition
  • Prioritize the counterintuitive wins your Loss Tree would have buried
  • Update the model as conditions change and keep your intelligence current
so that you can act with confidence, not hope
Why the Sequence Matters

Traditional analysis explains the past.
This sequence predicts the future.

Manufacturing systems exhibit emergent behavior—cascade effects that never appear under the original problem's name in your Loss Tree. The sequence is designed to surface them.

"The bottle jam's direct loss is only 0.35% — less than the timing belt's 0.46%. But eliminating the bottle jam recovers 5× its loss. The timing belt? Only 1.3×. Subtractive thinking gets this wrong every time."
— The Paradox of Averages, ReliaSim core methodology
📊

Your historian is explanatory, not predictive

Loss Trees record what happened as independent events. Competing risk modeling reveals they're statistically interdependent—the jam at 10:23 was precipitated by system stress from prior interruptions.

🔗

Sequence integrity matters

A model you experiment on before validation is a model you can't trust. The sequence enforces the discipline that separates confident investment from costly guesswork.

🎯

Leverage points are rarely obvious

The bottle jam with 0.35% loss returns 5× its loss when eliminated. The timing belt with 0.46% loss returns only 1.3×. Subtractive thinking would never find this.

What the Sequence Delivers

From uncertainty to validated intelligence

The six-step sequence is how Fortune 500 manufacturers validate capital decisions before committing.

~1%
OEE Accuracy
Validated baseline models match historian data within 1%—the standard that makes predictions credible enough to act on.
15 min
Model Construction
Plant managers build and run scenarios in real time during strategy meetings—no simulation expertise required.
Typical ROI Multiplier
Projects ranked by simulation consistently outperform Loss Tree priorities—because cascade effects are finally visible.
Get Started

Ready to follow the sequence?

ReliaSim gives plant managers the tools to run every step—from production graph to confident decision—without needing a simulation expert in the room.

Request a Guided Trial Parameterize with ReliaStats