Question 516Steam Plants - Assistant Engineer

The correct answer is C) spray nozzles at the gear meshing points. Reduction gears for main propulsion turbines are typically lubricated by a pressurized oil spray system. This system uses spray nozzles located at the gear meshing points to distribute the lubricating oil directly onto the gear teeth and bearings. This ensures adequate lubrication and cooling of the critical reduction gear components. The other answer choices are incorrect because: A) oil flinger rings are not used for reduction gear lubrication, B) grease cups are not used, and D) leak off lines from the lube oil cooler do not directly lubricate the reduction gears.