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Chapter 9 — Automated, Remote, and Real-Time Systems

9.1 Why automate

Tailings facilities operate continuously and can fail between manual readings. Automated systems provide continuous, unattended data and can raise alarms when no one is on site — essential for higher-consequence facilities.

9.2 Components of an automated system

  • Sensors — VW piezometers, in-place inclinometers, prisms, level sensors.
  • Dataloggers — scan sensors, apply conversion, time-stamp, and buffer data.
  • Telemetry — cellular, satellite, radio, or fiber to move data off-site.
  • Central database and dashboard — where data is validated, plotted, and reviewed (Chapter 11).
  • Alarm engine — compares readings to trigger/action levels and notifies responders (Chapter 13).

9.3 Satellite radar (InSAR)

Interferometric Synthetic Aperture Radar (InSAR / A-DInSAR) from satellites measures ground displacement over the entire facility and surroundings at millimeter precision, with no on-site instruments. It is ideal for:

  • Detecting regional or unexpected movement.
  • Covering remote or large facilities economically.
  • Providing an independent check on point instruments.

Its limitations — revisit intervals of days, sensitivity mainly to vertical and look-direction movement, vegetation effects — mean it complements, not replaces, ground instruments.

9.4 Real-time alerting and thresholds

Automated systems are only useful if they alert. Design:

  • Clear trigger and action levels per parameter.
  • Redundant communication paths (a single failed cell modem is a blind spot).
  • Escalation paths and on-call responsibility.
  • Regular testing of the alarm path (don't discover it's broken during an event).

Automation needs maintenance

Automated systems fail silently if neglected: dead batteries, fouled sensors, broken cables, expired SIM cards. A maintenance plan (Chapter 10) and periodic end-to-end alarm tests are mandatory.

9.5 Independence and resilience

For high-consequence facilities, regulators increasingly expect independent monitoring — systems and data paths not dependent on the operating control system — so that a site-wide outage does not also blind surveillance.

9.6 Key takeaways

  • Automation gives continuous, unattended coverage and alarms.
  • InSAR adds whole-facility mm-precision with no on-site sensors.
  • Design real trigger levels, redundant paths, and tested escalation.
  • Independent, maintained systems are expected for high-consequence facilities.