Abstract: A riser system for transporting slurry from a sea bed (4) includes a vertical riser pipe (10) and at least one pump (30) provided along the riser pipe (10). The riser pipe (10) includes a pipe input opening (12). The riser system includes a frame (40) to which the pump (30) is mounted. The frame (40) has a first connection member (41) at a predetermined distance from a pump output opening (32). The riser system includes a second connection member (15) provided along the riser pipe (10) at the predetermined distance above the pipe input opening (12). The first and second connection member (41, 15) are rotatably connectable allowing the frame (40) to rotate under the influence of gravity to a hanging position in which the pump output opening (32) connects to the pipe input opening (12).