公开(公告)号：US20170256159A1

公开(公告)日：2017-09-07

申请号：US15506199

申请日：2015-08-28

Applicant: SHELL OIL COMPANY

Inventor： Olumuyiwa Johnson SANYA ,  William Richard BYRNE

IPC: G08B29/18 ,  B63B25/08 ,  G08B21/18 ,  B63B43/00

CPC classification number: G08B29/185 ,  B63B25/08 ,  B63B35/44 ,  B63B39/00 ,  B63B43/00 ,  B63B2035/448 ,  G08B21/182

Abstract: A Floating Production, Storage and Offloading (FPSO) surveillance system (7) is equipped with an adjustable alarm threshold that suppresses nuisance alarms if liquid level variations in FPSO crude oil and/or other liquid storage tanks (6) monitored by the system do not exceed estimated oscillating liquid level variations due to oscillating motions of the FPSO unit (1) during severe weather conditions.