How many fuel igniters would be installed on the marine gas turbine engine shown in the illustration? See illustration GT-0017

Correct Answer: Option D — 2

Redundancy in ignition systems is vital for reliable gas turbine starting. Most aero-derivative engines, such as the LM2500, utilize two igniters positioned at specific locations within the combustor to ensure positive light-off. This dual-igniter configuration provides a safety margin, ensuring ignition even if one igniter plug fails.