Nitrogen compression system for leakage test on gas pipeline used for engine and vessel including the same

A vessel comprising:

• a hull;
• an engine room comprising an engine for propelling the hull;
• and
• a fuel supplying room comprising a fuel supplying system for supplying fuel gas to the engine,
• wherein the engine room further comprises a nitrogen compression system for a leakage test on a gas pipeline of the fuel supplying system and wherein the nitrogen compression system comprises:
• a nitrogen generator which is installed in the engine room and generates nitrogen;
• a nitrogen storage tank which stores the nitrogen generated from the nitrogen generator;
• an air compressor which generates compressed air used to support starting of an engine and supplies the compressed air to the engine;
• an air supplier which supplies air to the air compressor;
• a first diverter valve which is installed on a first diverter pipeline connecting the air supplier, the nitrogen storage tank, and the air compressor and is controlled to supply any one of air and nitrogen to the air compressor, wherein when the first diverter valve is controlled to supply nitrogen to the air compressor, compressed nitrogen compressed by the air compressor is used to purge a gas pipeline;
• an air storage tank which stores the compressed air generated from the air compressor:
• a second diverter valve which is installed on a second diverter pipeline connecting the air compressor to the air storage tank and is controlled to supply the compressed air to the air storage tank or to supply the compressed nitrogen to the gas pipeline;
• and
• an initial purging valve interposed between the second diverter valve and the gas pipeline.