Inspection and maintenance of a power plant or electrical generator includes which?

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Inspection and maintenance involve verifying that the generator operates correctly under no load so all systems—lubrication, cooling, and electrical controls—are functioning properly before any electrical load is placed on the unit. A short no-load run during pre-operation checks helps reveal leaks, unusual noises, vibrations, or gauge faults and ensures the equipment is ready for use without risking damage from loading conditions. Replacing a spark plug is a repair action done only if damaged, not a routine maintenance step; starting the generator under load can stress the system and mask underlying issues; and making significant modifications falls outside standard maintenance.