MISSING-OPERATION DETECTION

Process Step Verification to Stop Units Leaving Incomplete

NAGARE supports process step verification by checking configured visible operations against the completion list. It can flag an unconfirmed press, clip-fitting or lubrication action before release, while tool data, sensors or tests remain necessary where physical seating, force or application quantity must be established.

Verify a Station With Us

Trusted by manufacturers for error-free manual operations

THE PROBLEM

Some Operations Leave No Evidence Behind

Some operations leave little inspectable evidence after later work covers them. A visible press, clip-fitting or greasing action can support a process check, while seating, force and applied quantity still need their own acceptance evidence.

No Trace, No Check

Final inspection can only judge what it can see. Operations hidden inside the unit or with no visual change escape it.

Stations Release on Time

Many lines release a unit when the cycle time ends or a button is pressed, whether or not every operation was done.

Escapes Surface Late

A skipped operation often appears as a leak, a rattle or an early failure, long after the unit left the plant.
The Solution

Release Units Only When Every Operation Is Seen

Our AI process monitoring software, NAGARE™, supports process step verification by checking configured visible actions against an operation list. An observed action provides process evidence. Physical acceptance criteria and any release signal are defined separately with the station team.

Recognise Every Operation, Visible or Not

  • Learn each operation from the operator's actions
  • Check configured visible press, clip-fitting and greasing actions
  • Count operations that repeat, such as multiple clips
  • Show the operator what is still missing
Every operation
Recognised at the station
Live list
Missing work shown
Conceptual illustration of grease being applied to an exposed bearing already installed in a fixtured housing.

Gate the Release on Completion

  • Provide completion signals where a PLC interface is configured and validated
  • Apply an agreed hold or review rule for unconfirmed operations
  • Route units to a repair point where the line requires it
  • Store a completion record with clips for every unit
Before release
Incomplete units held
Per unit
Completion record kept
HOW IT WORKS

How Completion Is Verified

Process step verification can turn visible action checks into a completion record. Define what proves each operation, how ambiguous footage is reviewed and which separate tool or test evidence is required for its physical result.

Official video frame showing an engine-bearing assembly view with tracked parts and cycle status
Engine-bearing placement example: the footage demonstrates missing and repeated placement detection. Pressing, greasing and a PLC release interlock are not demonstrated.
Highlight #1

List the Station's Operations

Each operation, how many times it repeats and what proves it was done are set from your method and recorded cycles.

Highlight #2

Recognise Operations During the Cycle

Configured rules recognise visible operations. A recognised motion does not by itself prove seating force, applied quantity or another hidden physical result.

Highlight #3

Signal Release or Hold

An unconfirmed action follows the agreed review or hold rule. Release requires the evidence and correction procedure validated for that station.

Connect With Us

Send the operation list for one station and a cycle video. We will show which operations can be verified and how release would work.

Get In Touch

Process Step Verification Versus Other Release Rules

Every station has a rule for when a unit can leave. The difference is whether that rule knows the work was done.

Monitoring need
Manual methods
Traditional machine vision
NAGARE AI
Release trigger
Operator decides
Cycle time or button
All operations recognised
Invisible operations
Trusted
Sensed only if instrumented
Recognised from the action
Repeated operations
Counted by eye
Counted if a sensor fits
Counted from video
First-Time-Right
Depends on the shift
Assumes the cycle was complete
Incomplete units held at source
CUSTOMER SUCCESS

Abbott Holds Kits Until Every Activity Is Verified

At Abbott, NAGARE classifies any deviation from the approved activity list as NOK, alerts the operator and signals the PLC for each step, with a corrective-action hold before the workflow resumes.

Official Jidoka case-study cover for Abbott kitting process monitoring
Abbott Holds Kits Until Every Activity Is Verified
Healthcare

Abbott's published results describe activity-level verification across its manual medical kitting stations.

  • Corrective-action hold and PLC communication for each monitored step
  • 18 stations designed for monitoring, with operator faces masked for privacy

Frequently Asked Questions

Which operations are hardest to verify after the fact?

Hidden operations become difficult to inspect after later work covers them. A missed press-fit, clip insertion or lubrication step can be relevant examples, but a visible action and an acceptable physical result are different checks. Seeing a press move does not establish its force or depth. Seeing greasing does not prove the required quantity. Define the visible completion criteria and retain the tool, sensor or functional-test evidence needed for the result. Unseen work should remain unconfirmed.

How are skipped operations caught before the unit leaves?

Configured visible actions can be compared with the station operation list. Before the unit leaves, any unconfirmed item follows the agreed alert, review or hold procedure. A camera observation should not be treated as a validated release input until coverage, ambiguous cases and the release interface have been assessed. The operator or quality team then applies the approved correction. Some operations can be completed immediately, while others require inspection or repair rather than a repeated motion.

Can it connect to our line controller?

Yes. NAGARE can send a complete or incomplete signal at station exit, so the line controller only releases a finished unit. Where your line already uses a completion signal from tools or sensors, the camera result can be combined with it. The handshake, timing and fallback behaviour are agreed with your controls team during scoping, and the station can start in alert-only mode.

How does it count operations that repeat?

Where repeated operations remain visible and distinguishable, configured rules can maintain an operation count against the required number. Five recognised clip-fitting actions against six expected actions would leave one unconfirmed. It would not prove that the sixth clip is physically absent. Review occlusions, simultaneous actions and partial operations during validation. A camera count can support process checking without a sensor at every position, while separate criteria remain necessary for correct seating or application quality.

Does it replace functional and pressure testing?

No. A leak test or functional test checks a result that a camera observation of the action cannot establish. Validated visible-action checks may help prevent particular missed operations from reaching those tests, while the tests retain their acceptance role. Compare actual failure rates and causes before and after a change rather than assuming remaining failures must be component faults. Where unit linkage and retention are configured, the process record can help investigate a failed unit.

What happens to units that are found incomplete?

The approved work instruction determines whether the operator may complete missing work immediately or the unit needs inspection at a rework station. Repeating an action is not always an acceptable correction, particularly after an irreversible step. Where a line cannot wait, an agreed routing status can identify the unconfirmed work for review. Record the event and its disposition so an incomplete observation is not silently converted into a claim of a completed, conforming unit.

How does operation verification work technically?

Video research often uses temporal segmentation to divide footage into candidate operations. That explains one possible monitoring approach. It is not a statement of NAGARE's internal algorithm. For process step verification at your station, define visible completion criteria, representative variations and examples that should remain unconfirmed. Test short, partial and obscured actions against those criteria. The deployment decision should rest on demonstrated recognition, review and release behavior rather than on an assumed model architecture.

What should we send to plan process step verification at a station?

Send the list of operations performed at the station with any repeat counts, a few videos of normal cycles and examples of escapes traced back to it. Tell us how units are released today. With that, we can identify which operations to verify, propose the camera view and design the release signal for your line.

CONNECT WITH OUR EXPERTS

Show Us the Operation That Gets Skipped

Share the station's operation list, a cycle video and the escapes you trace back to it. We will plan process step verification for that station and explain timing and cost. A first station is typically verified and live in 4 weeks.

Verify a Station With Us
Close video