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✅ (MSS) Mandatory Action Signs

Mandatory action signs are used to instruct persons of a specific course of action that shall be followed.

This sign signifies that a space must be ventilated before and during entry to avoid the accumulation of hazardous toxic gases or oxygen depletion.





Marine Lite ✓ Mandatory Action Signs and Symbols :: Keep Closed At Sea/High Noise Level. To signify that ear protection must be worn.








It is used to signify that people must wash their hands before preparing food.

Mandatory action signs are used to instruct persons of a specific course of action that shall be followed.