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Field guide8 Curing Problems: How to Diagnose, Fix, and Prevent Them
Concept

Process Monitoring, Data Logging and Alarms

The connected system of sensors, displays, records, setpoints, alarms and interlocks used to observe process conditions and initiate timely response.

Monitoring shows whether a process is operating within defined conditions. The selected variable, location, frequency and limit must relate to the hazard or quality decision.

Continuous or periodic records reveal excursions and drift that isolated readings can miss. Clock synchronisation, units, configuration and retained raw data support interpretation.

Programmed schedules can standardise operation, but access control and version management are necessary. A copied recipe may be unsuitable for another product or load.

Alarms call for action; interlocks prevent or stop an unsafe state. Both require testing, escalation, override control and a safe response to sensor or communication failure.

Remote dashboards and notifications can shorten response time but add network, battery and access dependencies. A notification marked read does not prove corrective action occurred.

Review trends, alarm events, overrides and missing data with the batch record. Verify sensors and challenge fail-safe functions before relying on them for release.

Related in the Codex

References

  • https://www.nist.gov/calibrations/traceability
  • https://www.fsis.usda.gov/inspection/compliance-guidance/haccp
  • https://www.fao.org/fao-who-codexalimentarius/codex-texts/codes-of-practice/en/