Alerts and Incidents

The cold room alert system is integrated into the ionguard platform's alert engine. Alerts are shown on the monitoring panel, on the wallboards, and in the active alerts modal.

Alert types

The cold room module generates two types of critical alert:

Type	Severity	Description
Cold Room Time Exceeded	Critical	A worker exceeded the continuous exposure limit in the cold room
Cold Room Blind Spot (signal lost)	Critical	An antenna in a cold room zone went offline while there were workers inside

Progressive alerts (warnings)

Before generating a formal alert, the system issues progressive warnings as the worker's exposure approaches the limit:

Percentage	Visual indicator	Audible indicator	Meaning
75%	Yellow badge on the zone card	—	Attention: break should be planned
90%	Orange badge + timer highlight	Audible alert (if configured)	Urgent: worker should leave soon
100%	Red badge + red border	Continuous audible alarm	Critical: limit reached, violation recorded

info

The warnings at 75% and 90% are informational — they do not generate violation records. Only when 100% is reached is a violation formally recorded and an alert created in the system.

Alert modal

When an alert is generated, it appears in the active alerts modal accessible from the top bar:

Alert information

Each alert shows:

• Type of the alert (time exceeded or signal lost)
• Worker affected (name and identification)
• Message describing the incident
• Time the alert was generated

Available actions

Action	Description	Who can perform it
Acknowledge	Indicates that the operator is aware of the alert and taking action	Operator, TenantAdmin, TenantMaster
Resolve	Closes the alert with an explanatory note about the action taken	Operator, TenantAdmin, TenantMaster

Blind spot detection

The system continuously monitors the status of antennas in cold room zones. A blind spot occurs when:

1. An antenna in a cold room zone goes offline (no heartbeat for more than 2 minutes)
2. There are workers with active sessions in that zone
3. The system cannot confirm whether the workers are still inside the cold room

In this situation, the system:

• Triggers a blind spot alert (signal lost)
• Records a Cold Room Signal Lost violation for each affected worker
• Closes the orphaned sessions after the configured timeout, marking them as having a data gap

Caution

A blind spot alert is a real risk situation: the system has lost visibility of workers inside a cold room. The operator must verify on-site whether there are workers inside the room and whether they are safe.

Recommended response flow

The recommended procedure for responding to cold room alerts:

Time exceeded alert

1. Receive the alert (red banner + sound)
2. Acknowledge the alert in the system
3. Contact the worker or the shop floor supervisor
4. Confirm that the worker has left the room or is leaving
5. Resolve the alert with a note describing the action taken

Blind spot alert

1. Receive the signal lost alert
2. Acknowledge the alert in the system
3. Verify on-site whether there are workers inside the room
4. Check the antenna — confirm that it is powered and connected
5. Resolve the alert after confirming the workers' safety

Active alerts banner

As long as there are unresolved alerts, a red banner remains visible at the top of all module screens:

The banner shows:

• Number of active alerts
• A link to view all alerts
• The banner disappears only when all alerts are resolved