Use cases · OT operations

Agents on the plant floor. Above the control loop.

Agents are great at diagnosis, procedures and handovers. They do not belong inside the control loop. TapPass keeps each agent at its level and puts an operator on anything that would touch equipment.

✓Runs in your own environment

Where the agent lives, and how far it may reach
L4Business systemsERP, planning, maintenance recordsread
L3Maintenance assistantSite operations · historian, manuals, work ordersits level
L2Supervisory · SCADAPropose a setpoint change on line 3operator signs
L1Control · PLCWrite to the controllernever
L0Field devicesValves, drives, sensorsnever
Line 3 · this shifton the record
06:12allowRead vibration history, pump P-4
06:20holdSetpoint +8% on line 3
06:34blockOpen valve V-12
06:41allowFind procedure rev. 7, P-4
01Contained by design

Governance that fits the safety case. Not the other way round.

In OT, rollback does not exist and the safety case already has legal force. Agents have to fit inside it.

Agents stay at their levelRules follow the levels your plant already uses. An agent at site operations never writes downward.narrow remit
An operator on every physical actionA proposed setpoint or valve change waits for an authorised person, signed on their own device.operator signspasskey
Out of the path, never in the wayChoose fail open: if TapPass is unreachable, the agent loses its help and the plant carries on as before.fail open
Runs in your own environmentDeploy on your own servers with signed images and a signed licence. Air-gapped on request.on-premisesair-gapped
Information for a personDiagnosis and procedures come back as proposals for a human, which is exactly the right shape.advisory
A record the safety team can readEvery read, proposal and hold, signed and chained, ready for the people who own the safety case.signed record
02Where agents help

Hours of specialist work. Minutes for an agent, signed off by a person.

DiagnosisCorrelate a vibration signature with maintenance history and similar events.

Read only. The output is a hypothesis for the engineer on shift.

ProceduresFind the right revision of the right procedure, for this equipment, at 3am.

Read only, high value, low risk. Every lookup on the record.

HandoverSummarise the shift for the next crew, with open work orders.

Writes to the work-order system only, never to equipment.

Questions

OT operations, in plain answers.

Something else on your mind? Talk to our team.

Should an agent ever write to a PLC?

No. Anything that must respond in a deterministic window stays with the PLC and the safety systems. Agents belong above the control loop, in advisory and supervisory work.

What happens if TapPass is unreachable?

You choose fail open for these integrations, so the agent loses its help and operators and the control system carry on exactly as before.

Can it run without internet access?

TapPass runs on your own servers with signed images and a signed licence. Air-gapped deployments are delivered with our team.

Where do we start?

With read-only work such as diagnosis and procedure lookup, in watching mode. Every read and proposal is on the record for the people who own the safety case.

Agents on the plant floor. Inside your safety case.

Connect one agent and see every call TapPass would have held, stopped or routed elsewhere. Nothing is blocked while you learn.

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