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Control measure

Isolate a silo or storage tank

Control measure knowledge

Discharge control mechanisms should be isolated in the closed position. This mechanism may be manually, mechanically or electronically operated. This will prevent contents from being discharged, which may injure somebody in the silo.

The mechanism should be monitored at all times throughout the incident to prevent it from being opened or turned back on without authorisation from the incident commander.

Other on-site machinery that may have an impact on the incident should be isolated – refer to the hazard for on-site machinery. It may also be necessary to isolate power supplies.See National Operational Guidance: Utilities and fuel

Strategic actions

Fire and rescue services should:
  • Ensure that information about silos and storage tanks and their use is included in Site-Specific Risk Information (SSRI), along with procedures for controlling and accessing them

Tactical actions

Incident commanders should:
  • Consider requesting advice or assistance for controlling the silo or storage tank from the responsible person
  • Consider closing discharge control mechanisms to silos or storage tanks based on specialist advice