Hydrogen leak detection system, hydrogen leak detection method, and hydrogen transport pipeline capable of hydrogen leak detection

A hydrogen leak detection method for a hydrogen transport pipeline including a pipe-shaped transport inner pipe for transporting a hydrogen fluid and an outer protection layer surrounding an outer circumference of the transport inner pipe, the hydrogen leak detection method comprising:

• arranging at least one optical fiber unit, which includes at least one optical fiber for detecting hydrogen leaking from the transport inner pipe and an optical fiber protection layer surrounding the at least one optical fiber, in a longitudinal direction of the hydrogen transport pipeline;
• providing an optical signal to the at least one optical fiber;
• detecting the optical signal from the at least one optical fiber;
• determining whether a detected optical characteristic value of the at least one optical fiber exceeds a normal optical characteristic range;
• and
• determining that hydrogen is leaking from the hydrogen transport pipeline when the detected optical characteristic value of the optical fiber is determined to exceed the normal optical characteristic range.

A hydrogen transport pipeline capable of hydrogen leak detection by using an optical fiber, the hydrogen transport pipeline comprising:

• a pipe-shaped transport inner pipe for transporting a hydrogen fluid;
• an outer protection layer surrounding an outer circumference of the transport inner pipe;
• and
• at least one optical fiber unit disposed outside the transport inner pipe in a longitudinal direction of the hydrogen transport pipeline, and including at least one optical fiber for detecting hydrogen leaking from the transport inner pipe and an optical fiber protection layer surrounding the at least one optical fiber.