JIDOKA applied to the plant's most expensive moment

The problem

The most expensive moment of the plant hangs on a ticked box.

This is not a quality matter. A flange left untorqued on a hot solvent circuit, or a blind forgotten in a line, does not produce a defective part: it produces a process safety incident and a shutdown lasting days. And it shows up once there is already pressure, temperature and product. The only record of that massive, repetitive, critical verification is usually a ticked box on a sheet. With no objective evidence behind it. There is an aggravating factor in any asset that has spent a long period in preservation: the number of interventions open simultaneously before start-up is enormous, and with it the statistical probability that one point is left unclosed. This is not a question of the team's professionalism: it is a question of volume.

• Start-up is the most dangerous and most expensive moment in a continuous process plant, and it hangs on a list: blinds, flanges torqued with their marks, manual valve positions, manways, scaffolding and tool removal, drains.
• A flange left untorqued on a hot solvent circuit, or a blind forgotten in a line, does not produce a defective part: it produces a process safety incident and a shutdown lasting days. And it shows up once there is already pressure, temperature and product.
• The only record of that massive, repetitive, critical verification is usually a ticked box on a sheet, with no objective evidence behind it.
• After a long preservation period, the number of interventions open simultaneously before start-up is enormous. This is not a question of the team's professionalism: it is a question of volume.

How it fits the IRIS system

Edge + JIDOKA AI — pressurization is blocked until every point is green and the responsible person signs.

Edge + JIDOKA AI.

Three rings, in this order: automatic visual verification of each point against its "ready to start" reference state, a mandatory human signature, and an auditable record of both. Nobody takes the signature away from the responsible engineer; what changes is that they no longer sign a blank checkbox at three in the morning.

• Cameras on the critical points — fixed where the point is permanent, tablet-guided capture where it is occasional.
• Each point compared against its "ready to start" reference state.
• Each point goes green with its image and its timestamp.
• Pressurization authorization is blocked until every point is green and the responsible person signs. Three rings: automatic visual verification, mandatory human signature, and an auditable record of both. Nobody takes the signature away from the responsible person; what changes is that they no longer sign a blank checkbox.

See the full IRIS architecture →

Before and after

The line-up on a checklist versus the verified line-up

Aspect	Today	With iLEAN Edge
Evidence per point	A ticked box	An image with timestamp
A missing blind	Found with the line hot	Found with the line cold
Pressurization authorization	On a signed list	Blocked until everything is green and signed
Who signs	The responsible person	The responsible person, on evidence
Verification time per unit	Hours walking with a list	Reduced
Record for the investigation	A sheet	Image, timestamp and signature per point

from a ticked box with no evidence to visual evidence per critical point with timestamp and signature. From a line-up failure found with the line hot to one found with the line cold. Reduced line-up verification time per unit.

Impact estimate

Estimated impact — to validate with your own numbers.

The block below is an estimate to be validated against your plant's actual data. We put it forward so the committee has an order of magnitude; we refine it during the assessment.

• Estimated payback 6-12 months, measured against the first start-up incident avoided.
• Direct impact on the safety indicator, which is the one that stops the complex when it fails.
• From a ticked box with no evidence to visual evidence per critical point with timestamp and signature.
• And reduced line-up verification time per unit, which is time on the critical path of the turnaround.

estimated payback 6-12 months measured against the first start-up incident avoided, with direct impact on the safety indicator. *Estimate to validate*.

And the fair question from the production manager

«What if a camera blocks the start-up for no reason?» — that is the right objection, because the start-up window is the most expensive hour of the year. Each point is compared against its reference state and, in case of doubt, the system does not block silently: it escalates the point to the responsible person, who looks and signs on the evidence. It stops on a verifiable discrepancy — a blind still in place, a valve in the wrong position — not on model uncertainty. Comparing a point against its own reference image is an anchored task, where the best models drop below 1.5% error [1], and the remaining doubt goes to a person, never to a green light.

^[1] OpenAI paper "Why Language Models Hallucinate", 2025 — on the reliability of AI in anchored tasks.