PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDING
LUBRICATION INSTRUCTIONS Continued
Magnesium may catch on fire if welded or exposed to high temperatures. Do not weld on
magnesium castings or expose them to high temperatures.
Fine particles of magnesium can catch fire and burn you. Be very careful when filing or
grinding on magnesium. Use grinding equipment marked FOR MAGNESIUM GRINDING
ONLY. Keep a Class D fire extinguisher close by.
Water and foam type fire extinguishers will cause magnesium fires to flare up. Use a Class D fire
extinguisher or a sodium chloride base dry powder to fight magnesium fires.
Improper disposal of magnesium can cause a fire or explosion. Do not expose magnesium to
high temperatures. Let magnesium dry before placing in sealed metal containers. Label
containers and ship to a Class 1 hazardous waste disposal site.
FAN CASTINGS. Welding on fan magnesium castings is not authorized. Do not attempt to weld on
FILING OR GRINDING MAGNESIUM. You must observe the following safety precautions when filing or
grinding on magnesium: