Abschnitt 8 - 8 Identification of applied substances and magnesium
According to § 3a of the Workplace Ordinance in conjunction with figure 1.3 of the Annex, health and safety markings have to be used if the risks to safety and health can not otherwise be avoided or sufficiently minimized. The Technical Rule ASR A1.3 "Safety and Health Protection Signage" specifies the requirements for safety and health protection signage at workplaces. Accordingly, signs have to comply with this rule.
The following markings are frequently used especially for magnesium.
Outdoor rooms and storage locations with flammable areas must be marked at suitable positions, especially at the accesses, with the prohibition sign P003 "No open flame; fire, open ignition source and smoking prohibited". Potentially explosive areas must be additionally marked with the warning sign D-W021 "Warning of explosive atmosphere".
Outdoor rooms and storage locations where magnesium chips and dusts are stored have to be marked with the prohibition sign D-P006 "No unauthorized entry" at the entrances.
The prohibition on the use of water as a fire extinguishing agent has to be indicated by the prohibition sign P011 "Do not extinguish with water".
Places, where fire extinguishing equipment and extinguishing agents are located have to be clearly and permanently marked with the fire protection symbol F001 "Fire extinguisher" or F004 "Collection of fire fighting equipment".
Example of marking dry magnesium chips:
Magnesium chips Information on special hazards:
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Further marking requirements can be found in the safety data sheet.
As an example, the information for magnesium chips are listed here:
Signal word "hazard"
Hazard statements - H-phrases:
H228: Flammable solid
H261: In contact with water releases flammable gas
Precautionary statements - P-phrases:
P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P370+P378: In case of fire: Use metal fire powder for extinction.
P402+P404: Store in a dry place. Store in a closed container.
Transportation regulations
UN-number: 1869
Designation of hazardous material: Magnesium chips
Class: 4.1 (flammable solids)
Hazard identification number: 40
Packing group: III (material with low hazard)
Hazard label: 4.1
Tunnel restriction code: E