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CONVERSION PROJECT PROFILER TEMPERATURE CONTROL VALVES Salvage Ship G/omor Explorer Converted For Deepwater Drilling . nr, Circle 209 on Reader Service Card _ . .. 100 Maritime Reporter/Engineering News flooded and inserted into place, leaving a 74 x 42-ft. (22.5 x 12.8-m) drilling pool. The ship was lifted again on standard 6-ft. (1.8-m) blocking and the new bottom was welded into place. Two bulkheads were erected above the new pool, the aft one car- rying a 25-ton (22.7-m-ton) rack to support the 175-ton (158.7-m-ton) blow-out preventer. The new fore hold will contain stacks of riser pipe and related stores. To one side is a new moonpool, 16 x 19-ft. (4.9 x 5.8-m), specifically for Remote Operated Vehicle (ROV) deployment. The ROV will have the ability to inspect the seabed at great depths and will have its own service facilities and stowage area on deck. The aft hold required extensive demolition and re-construction to support the loads imposed by ten 40 x 15-ft. (12.2 x 4.6-m) mud tanks; five, 7,500-psiI mud pumps and a new electrical generator room housing four, EMD 645 16- cylinder AC generators, each weighing 40 tons (36.2 m tons). The electrical output, generated at 4,160 volts AC, was rectified to 440 DC via two new (SCR) control rooms. A powerful, 1,140-kW emergency generator was installed aft of the bridge and also demand- ed extensive structural modifica- tion. The ship's diesel-electric propulsion system — five Nordberg 16-cylinder AC genera- tors turning six, 2,200-hp DC shaft motors — was overhauled and rebuilt where necessary. The twin propellers and shafts and all five 2,000-hp, shaft- driven thrusters were returned to top condition while the exterior received a five- year coatings system application before the ship was refloated. The provision of ventilation to these numerous spaces necessitat- ed retrofitting an entire system from the new deck down. Besides vent shafts, the deck plan called for 25 hatches, scuttles and davits for four Schat-Harding, 60 and 80- person, self-righting lifeboats. Access to the helicopter deck was strengthened to carry a forklift, and under-deck reinforcement was added to support four Seatrax cranes, with boom lengths of 90 to 110 ft. (27.4 to 33.5 m). "The Glomar conversion has been the largest, most complex project in the history of this yard," said Well-known salvage ship Glomar Explorer arrived at Cascade General in February after 20 years in lay-up. It departed in June after 135 days of round-the-clock work to fulfill its new mission as a state-of-the-art, deepwater drill- ship. The fast conversion was com- pleted 15 days ahead of schedule and included a virtual doubling of specified work from the original contract terms. Some five million pounds of steel were used in the primary modifica- tions. The 619-ft. (188.7-m) ship was lifted and blocked at the bilges with a 12-ft. (3.7-m) clearance. In a carefully orchestrated sequence, the retractable gates covering Glomar Explorer's 200-ft. (96.96- m), moon pool were cut away, low- ered and removed. Prefabricated, bottom modules were floated in, Circle 334 on Reader Service Card Portland, Oregon Specializing in state of the art marine controls Engine room automation - The TMS System 2000 Tank Level Gauging systems - The LevelCom 100 Temperature & Bearing Monitor Panels Engineers Alarm Panels, Digital Draft Gauges For information on the TMS System 2000, LevelCom 100 Liquid Level Computer or any of the other fine TMS products and services please call or write us at: 6040 N Cutter Circle, Suite 302, Portland, OR 97217 Phone: 503-285-8947 Fax: 503-285-1379 Or visit our home page at http://www.tnis-usa.com Circle 335 on Reader Service Card Secondary Cooling Systems Fuel & Lube Oil Preheating Model G 3-Way Control Compact with six different piping arrangements. Ideal for control of turbo intercooler temperature to reduce emissions. Available with Pneumatic or Electric Actuator 3-way Engine Jacket Water 2-16 inch Charge Air Cooling American VULKAN Corporation The experts in controlling torsional vibrations. P.O. Drawer 673 Winter Haven, FL 33882-0673 941-324-2424 • Fax 941-324-4008 www. vulkanusa. com A World of Marine Applications Flexible Couplings from American VULKAN can meet any Marine need. We offer a diverse line of Torsional Couplings for the full range of Ships, Boats & Vessels. Our experienced Engineering staff can also Custom Design to meet your specific requirements. We offer on-site Service, Installation and Troubleshooting. Our Manufacturing and Inventory are second to none. Give us a call.
