SENTINEL
Memory
Command CenterMemory ExplorerIncident TimelineAgent HandoffArchitecture

System status

CockroachDB

sentinel-memory-32275.j77.aws-us-east-1.cockroachlabs.cloud:26257 · 48ms

Vector index

18 memories · 1024d

Bedrock

us-east-1 · nova-lite-v1:0

Decision support only. Sentinel has no machinery control path.

LIVECockroachDBBedrockA. Reyes (Shift Lead)

Sentinel provides decision support. Critical physical actions require authorized human approval.

INC-2026-0817criticalactive

Smoke detected near Machine 7

Assembly Plant · Zone 4

Phase
review
Elapsed
14d 0h
Responder
A. Reyes (Shift Lead)
Agent
Sentinel Backup

Smoke was detected near Machine 7 in Assembly Plant Zone 4 following a thermal sensor alarm. Machine 7 shares a pressure header with Machine 8. Main power to the cell remains active and the shared pressure line has not yet been confirmed isolated.

Recommended next action

approvedcritical

Do not shut down and restart Machine 7 immediately. First, isolate the shared pressure line between Machine 7 and Machine 8.

Shutting down Machine 7 without isolating the shared pressure line could transfer residual pressure to Machine 8, potentially causing damage. This is supported by Memory ID 20000000-0000-4000-8000-000000000001, where a similar action led to secondary equipment damage. Memory ID 20000000-0000-4000-8000-000000000011 also emphasizes the need to isolate and verify the shared pressure line before any state change on Machine 7 or Machine 8.

Recorded as an authorization only. Sentinel does not operate equipment — an authorized responder performs the action on site.

Add an observation or check another proposed action to continue.

Live observation feed

12 entries

  1. Incident INC-2026-0817 opened: smoke detected near Machine 7, Assembly Plant Zone 4. Severity critical.

    Sentinel·08:42 AM·incident_created

  2. Smoke detected near Machine 7 following a thermal sensor alarm on the drive housing.

    Thermal sensor TS-7A·08:43 AM·observation

  3. Worker exited restricted Zone 4 and is accounted for at the muster point.

    A. Reyes (Shift Lead)·08:46 AM·observation

  4. Pressure reading increasing on the Machine 8 header; currently 12% above nominal and rising slowly.

    Pressure sensor PT-8B·08:48 AM·observation

  5. Main power to the Zone 4 cell remains active; Machine 7 is still energized.

    Cell power monitor·08:49 AM·observation

  6. Smoke intensity increasing near the Machine 7 drive housing.

    A. Reyes (Shift Lead)·02:04 AM·observation

  7. Responder is considering: The responder rejected "Immediately isolate the shared pressure line between Machine 7 and Machine 8 before any further action is taken." and requested a different approach.

    A. Reyes (Shift Lead)·02:04 AM·note

  8. Smoke intensity increasing near the Machine 7 drive housing.

    A. Reyes (Shift Lead)·02:29 AM·observation

  9. Pressure is rising near Machine 8.

    A. Reyes (Shift Lead)·02:35 AM·observation

  10. Responder is considering: Shut down and restart Machine 7 immediately to stop the smoke.

    A. Reyes (Shift Lead)·02:36 AM·note

  11. Responder is considering: Shut down and restart Machine 7 immediately to stop the smoke.

    A. Reyes (Shift Lead)·03:58 AM·note

  12. Responder is considering: Shut down and restart Machine 7 immediately to stop the smoke.

    A. Reyes (Shift Lead)·04:02 AM·note

What happened last time?

78.9%

In INC-2025-0412 (April 2025), machine 7 was restarted before pressure isolation. Secondary equipment damage near Machine 8. No personnel injury. Eleven-hour operational shutdown.

Similarity
78.9%
Incident
INC-2025-0412
Date
Apr 12, 2025
Severity
critical

Lesson recorded: Isolate and verify the shared pressure line before shutting down or restarting Machine 7.

A similarity match over past consequences — not causal proof. Verify current conditions before acting.

Retrieved memories

18 memories searched · 188ms · 1024-dim vectors

Vector index
INC-2025-0412criticalIncident summary

Pressure transfer after premature Machine 7 restart

78.9%

Smoke detected near Machine 7 in Assembly Plant Zone 4 following a thermal sensor alarm. Machine 7 shares a pressure header with Machine 8. The responder restarted Machine 7 to clear the fault before the shared pressure line was isolated.

Action taken
Machine 7 was restarted before pressure isolation.
Outcome
Secondary equipment damage near Machine 8. No personnel injury. Eleven-hour operational shutdown.
Lesson
Isolate and verify the shared pressure line before shutting down or restarting Machine 7.
memory …00000001Apr 12, 2025cosine distance 0.2113
PROCEDUREcriticalSafety procedure

Standing safety procedure

50.6%

Coupled-equipment procedure for Assembly Plant Zone 4: Machine 7 and Machine 8 share a pressure header. Before any shutdown or restart of either unit, close the header isolation valve, verify the downstream gauge reads zero, and record the verifying responder by name.

Lesson
Isolate the shared header and verify zero pressure before any state change on Machine 7 or Machine 8.
memory …00000011Aug 18, 2026cosine distance 0.4936
INC-2025-0603criticalIncident summary

Solvent leak at the decanting station

38.8%

A solvent drum coupling failed at the decanting station in the Chemical Store. Extraction was increased before the supply line was closed, pulling vapour across the adjacent work cell.

Action taken
Ventilation increased before the source was isolated.
Outcome
Vapour spread to an adjacent work cell, two workers relocated for observation, six-hour bay closure.
Lesson
Stop the source before changing airflow; ventilation moves a hazard, it does not remove it.
memory …00000009Jun 3, 2025cosine distance 0.6121

Retrieved from the CockroachDB distributed vector index using cosine distance.

Safety guardrails

  • Human approval required for physical actions

    Any recommendation involving shutdown, restart, re-energizing, venting, isolation or hazard-zone entry must be approved by an authorized human responder before it is carried out. Sentinel never actuates equipment.

    approval

  • Emergency shutdown cannot be automated

    Emergency shutdown is a human-initiated action. Sentinel may recommend and sequence it, but the system has no machinery control path and will never execute it.

    approval

  • Conflicting instructions must be escalated

    When two recorded statements about equipment state, personnel location or an ordered action contradict each other, Sentinel raises a contradiction and escalates instead of choosing between them.

  • Shared pressure lines isolated before equipment state changes

    On coupled equipment, verify and isolate the shared pressure line before shutting down or restarting either unit, so residual pressure cannot transfer to the coupled machine.

    approval

  • All actions are audit logged

    Every recommendation, approval, rejection and state change is written to the immutable audit trail in CockroachDB in the same transaction that applies the change.