To stably supply gas having quality satisfying specifications (calorific value, pressure and a flow rate) required by gas supply destinations by using and appropriately mixing only gas derived from LNG without using expensive LPG to suppress calorific value fluctuation of natural gas generated by combining BOG, in a natural gas supply system.
The natural gas supply system is provided with an LNG tank 1; a first natural gas supply system for supplying natural gas to a first supply destination after the natural gas is supplied from the LNG tank 1 via a first carburetor 14 and combined with BOG; a BOG combining system 4 for combining BOG generated in the LNG tank 1 to the first natural gas supply system; a second natural gas supply system for supplying natural gas from the LNG tank 1 to a second supply destination via a second carburetor 25; and natural gas combining systems 35, 45 provided between the first and second natural gas supply systems for running gas between them.
KUWATA TOMOE
OGURA KAZUMASA
Keisaku Nakao
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