Servicing of a cartridge-operated dry chemical fire extinguisher aboard ship would include ensuring that the __________.

Correct Answer: Option D — powder is not caked and there is a full charge

Cartridge-operated dry chemical extinguishers must be inspected to ensure the chemical agent remains free-flowing. Caking prevents proper discharge, rendering the unit ineffective. Regular maintenance, including checking the charge weight and ensuring the powder is loose, is required by 46 CFR to ensure reliability during an emergency.