When liquid nitrogen leaks, the effective measures are as follows:
1. Evacuate personnel immediately from the polluted area and isolate them to strictly restrict access.
2. Personnel handling leaks must take protective measures.
3. Increase the amount of ventilation in the area and monitor the oxygen content.
4. Spray a lot of water from the upwind to the leak area.
5. If the liquid nitrogen tank or its valve leaks, please contact the manufacturer's emergency phone and never spray water to the leak.
6. If the leak is in the system, the container valve should be closed and the pressure must be released before repairing.