CS-HIS-008 · HIS Historian access and operational data federation · 42 of 192
Apply source-local caching and access budgets
Platform Operator · Trigger: Repeated historical queries compete with plant workload.
Simulated fixture data. Every record, receipt and timeline entry on this screen is demonstration material. It is never production evidence.
Acceptance
2 of 4 steps satisfiedTests will demonstrate cache provenance, source budget enforcement and policy-controlled expiry.
Run the remaining steps below. The result is read back from record state — nothing here is a toast.
Normal path
Historian history is federated, with a bounded backfill planned and its evidence verified.
Step 1. Test acquisition and confirm checkpoint behaviour.
satisfiedacquisitionhealthycontractcurrentbacklogbacklogged
Moves the record and writes evidence. Permission: test.
Acceptance for this step: acquisition = healthy
Step 2. Preview the bounded impact of the history request before running it.
satisfiedOperates onRECO-012Reprocessing — NGD File drop F6 → canonical flowRecovery plan· NORTHBRIDGE-ALLOY / Sheffield Bar Mill
planplannedauthorityrejectedverificationverified
Separation of duties: Integration Engineer may not do this. Act as
Acceptance for this step: plan = planned
Step 3. Verify reconciliation against the historian's own totals.
not yet satisfiedOperates onRECO-019Replay — HAL Document library C27 → canonical flowRecovery plan· OPTIMON-IND / Halol Packaging Line
planfailedauthorityapprovedverificationmissing
Separation of duties: Integration Engineer may not do this. Act as
Acceptance for this step: verification = verified
Step 4. Verify the custody chain for the federated history.
not yet satisfiedOperates onEVID-026Asset/Furnace-1 · temperature evidence 26Evidence chain· OPTIMON-IND / Nagda Warehouse
custodyreviewcompletenesspartialmaturitypartial
Moves the record and writes evidence. Permission: annotate.
Acceptance for this step: custody = verified
Exception path
Expired or prohibited cache content will not be served as fresh source truth.
Alternate path. The historian throttles or refuses the window: escalate rather than retry blindly.
not yet satisfiedtriageresolvedimpactdegradedremediationcomplete
Moves the record and writes evidence. Permission: annotate.
Acceptance for this step: impact = blocked
Workflow as specified
CoreSync will use approved bounded caches, freshness/expiry rules, quotas and query cancellation while preserving the distinction between cached and newly retrieved results.
Evidence written in this session
Nothing run yet in this session. Record state shown above may already satisfy steps from the seeded fixture history.
Journeys that include it
Not part of a composite journey; exercised through its family views.