ANNULUS MONITORING

A method and apparatus are disclosed for monitoring an annulus region (3101, 3102, 510) of at least one flexible pipe (205, 3001, 3002, 500). The apparatus comprises a sampling chamber (450) comprising a sampling zone (440) and a monitoring system (455) that determines a concentration value for at least one target gas species in the sampling zone (440). The sampling zone (440) is selectively connectable to a one of a plurality of fluid sampling passageways (330, 340, 365, 370, 530, 540, 550) in fluid communication with an annulus region (3101, 3102, 510) of a respective one, of at least one, flexible pipe (205, 3001, 3002, 500), to provide fluid from the annulus region (3101, 3102, 510) in the sampling zone (440) via the connected sampling passageway (330, 340, 365, 370, 530, 540, 550). (Figure 3)