In the process of ship construction,the shipyard may install the equipment that has not passed the factory act test(FAT)on the hull for the purpose of expediting the construction period or other reasons.This can reduce the waiting time of shipyard personnel and equipment and all sections can be carried on time.However,this practice will easily lead to the increase of ship commissioning time,the difficulty of rectification after the essential problems of equipment,and the failure of ship trial due to serious equipment failure and commissioning failure.The risk of equipment commissioning which installation on board without FAT through examples is analyzed,in order to provide reference for practitioners.
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