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7.4 Mandatory signs

Mandatory signs are circular in shape. White symbol on a blue background. Usually accompanied by an explanatory text. Examples are listed below.

Mandatory signDescription 
Eye protection on face. Sign.
Eye protection must be worn.
Hearing protection on head against a blue background. Sign.
Hearing protection must be worn.
Respiratory protection on face. Sign.
Respiratory protection must be worn.
Face shield on face. Sign.
Face protection must be worn.
White protective suit in a blue circle. Sign.
Protective clothing must be worn.
White exclamation mark in a blue circle. Sign.
Fire door - Keep closed.
Gas cylinder with chain in a blue circle. Sign.
Secure gas cylinders of all sizes,
whether empty or full.
Last updated: 13 Jan 2025 | information [at] kc [dot] lu [dot] se