LNG CARGO HOLD TEST METHOD, OFFSHORE STRUCTURE TO WHICH SAME IS APPLIED, AND LIQUID NITROGEN SUPPLY SYSTEM OF OFFSHORE STRUCTURE

摘要

Disclosed are a liquefied natural gas (LNG) cargo hold test method, an offshore structure to which same is applied, and a liquid nitrogen supply system of an offshore structure. An LNG cargo hold test method according to an embodiment of the present invention comprises the steps of: (a) after building an LNG cargo hold of a floating liquefied natural gas (FLNG) facility, performing a primary integrity test for a secondary barrier of the LNG cargo hold; (b) performing a cooldown operation for the inside of the LNG cargo hold; and (c) performing a secondary integrity test for the secondary barrier of the LNG cargo hold, wherein steps (a) to (c) are performed for the LNG cargo hold of the FLNG facility in a state where the FLNG facility is located onshore, and step (b) is performed using one refrigerant except for LNG.