What a missed gauge round actually costs a plant

The gauge round through a process plant is unremarkable while it's running: a technician walks a fixed route, reads pressure gauges and displays, checks for leaks and anomalies, logs the values. Across many of the 4,049 operating areas subject to the Störfall-Verordnung, that's daily routine — in parts of it, inside Ex-hazard zones that require specifically certified staff.

It only becomes noticeable when it fails: a sick call, a shift with no certified technician available, a staffing gap over a long weekend. The plant then faces a decision it never has to make in normal operation.

That inspection rounds in Ex zones are bound to requirements is the starting point of this task, not its commercial core. The relevant business question isn't whether the round is mandated — it's what skipping it costs.

If the regular specialist is unavailable, the simplest fallback is usually overtime for another certified employee or a short-notice stand-in — both above the standard hourly rate, night and weekend premiums included, often sharpened further by the general shortage of staff holding the required Ex certification. That cost is predictably unpredictable: it doesn't happen every week, but with enough regularity that it adds up to a noticeable sum over a year.

The second case is more expensive: a round that's simply skipped rather than covered — and the exact reading that would have flagged an emerging leak or a threshold breach never gets taken. The path from "one round missed" to "the plant is down" isn't automatic, but it's the reason the round exists in the first place. An unplanned shutdown in a process plant typically costs a multiple of what a stand-in shift would have cost.

For the technical requirements operators actually place on a round-walking robot — data sovereignty, service contracts, user management — see werob's separate analysis of the NAMUR working-group position: What six chemical operators ask of a round-walking robot. That piece covers what the robot needs to be able to do. This one covers what it costs when the round doesn't happen.

A wheel-based robot running the same route on a fixed cadence doesn't solve the expert question — evaluating an anomalous reading still belongs to a qualified technician. What it secures is the reliability of the round itself: it happens regardless of sick leave, shift gaps or public holidays, and the readings get logged whether or not a specialist is available that day.

werob integrates these systems vendor-neutral from 44+ OEM partners — spec within 48 hours, quote within 5 days, live operation within 8 weeks. werob does not currently publish a specific €/year saving for process-industry deployments; the arithmetic is site-specific, depending on shift model, staff availability, and how often rounds were skipped before automation.