Simam Digital live demo

Lock-out

We built a lock-out/tag-out trainer on a pressurised line, where valves take sustained effort and spring back if released early, and the line only bleeds down once both ends are shut. It is a demonstration we built ourselves: no client commissioned it, and anything marked sample is made up and says so on screen.

How it was made

Unsafe acts are recorded as faults instead of being prevented. A trainee can therefore complete every step of the procedure and still fail it.

What it will not tell you

An interactive demo, not accredited safety training. The plant is invented, the pressures are illustrative, and the procedure is simplified. It is not a substitute for any real isolation permit or competence assessment. A measurement taken from a capture is a guide: where a figure matters legally or commercially, the surveyed number rules, and nothing here replaces an inspection.

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The full lab write-up

EXP-060 · live demo
Lock-out · Human + AI Interfaces

Every step done, and still a fail.

A lock-out/tag-out trainer on a pressurised line. Valves take sustained effort and spring back if you let go early, and the line only bleeds down once both ends are shut. Unsafe acts are recorded rather than prevented, so a trainee can finish the whole procedure and still fail it.

6.0BARStep · Close the upstream valve
Hold a valve button to turn it · release early and it springs back
Building the panel…
Operate
Measured
Line pressure
–
Valves shut
–
Steps complete
–
Outcome
In progress

How we built it

A procedure you can complete and still get wrong

  1. Model the panel, don't capture it

    A captured place shows how something looked. A procedure needs parts that move, resist and read out, so the panel is built geometry with a simulated process behind it: valve travel, line pressure and the status lamp.

  2. Make closing a valve into work

    A valve needs about 1.6 s of sustained effort and springs back to open in 0.45 s if released early. Driven fully home it latches, as a gate valve does. Closing one is a decision you have to hold, not a click.

  3. Let the line behave like a line

    Pressure only falls once both ends are shut, taking 4.28 s to drop from 5.98 bar to the 0.2 bar safe mark, and rises again if a valve is reopened. The gauge has to be read before locking off, because the reading is the evidence.

  4. Record unsafe acts instead of blocking them

    Locking a live line is allowed to happen and is written down as a fault. A trainer that prevents mistakes teaches nothing about them; one that records them can show you what you did.

  5. Score the run, not the checklist

    Across four scripted runs: a correct run completes 5/5 and passes; locking a live line and recording a false verification both complete 5/5 and fail; skipping the lock finishes 4/5 and fails. Completing every step is not the same as doing it safely.

Limits

  • An interactive demo, not accredited safety training. The plant is invented, the pressures are illustrative and the procedure is simplified. It is not a substitute for any real isolation permit or competence assessment.
  • This page is driven by buttons. The WebXR build adds reaching for the valve, gaze on the gauge and a spoken confirmation, of which only the fallback path has been verified.
  • Two valves, one line, no downstream stored energy and no permit paperwork. The bleed-down is a simple decay, not a fluid model.
  • Our figures are simulation measurements taken headlessly at a fixed timestep, not frame-rate or timing measurements taken in a browser.