Figure F16. Photographs of Hole U1362B CORK wellhead immediately prior to deployment. CORK was briefly lowered below the waterline to de-air pressure monitoring lines and was then raised so that valves could be set in final positions for deployment. A. Pressure monitoring bay. Pressure is monitored at one depth in basement with lower valve, which can be switched to monitor seafloor pressure to evaluate instrument drift during periodic servicing visits with a submersible or ROV. Second valve is set for long-term monitoring of cased interval between 16 and 10¾ inch casing. Seafloor pressure is monitored using dedicated gauge. B. Geochemistry sampling bay. All valves are deployed closed, and OsmoSampler systems will be attached during summer 2011 servicing. C. Flowmeter and microbiology sampling bay. Large ball valve is closed on deployment with dust cover installed. flowmeter could be installed during summer 2011 servicing, although current plan is to use Hole U1362B for long-term flow experiment. Two microbiology sampling valves are connected to a single PTFE line that extends from the lowermost basement interval.
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