Page 56: of Maritime Reporter Magazine (June 1999)

10 Significant Marine Innovations

Cargo Handling:

Molten Sulphur Tanker Sails Four Years Sans Freeze-Ups

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M/V Sulphur world's largest and sulphur tanker has f near-continuous to the ship's inno- nance system. Sul- jidiary of Inter- oration, keeps se at sea hauling 58

Circle 126 on Reader Service Card "The Yearbook" around 24,000 long tons of molten sul- phur per trip. "We've had zero freeze- ups and zero maintenance associated with the bolt-on piping and valve heat- ing system," says Peter Johnston, Sul- phur Carriers' VP of operations.

For reportedly the first time on any sulphur transport ship, a bolt-on heating system keeps the molten cargo flowing and the ship on schedule by preventing costly delays due to frozen pipes and valves. The innovative thermal mainte- nance system was engineered and built by Controls Southeast Inc., of Charlotte,

N.C. Frozen lines and the resulting delays in loading and unloading can be very costly in lost transit time and addi- tional port charges.

All the cargo-carrying pipes and valves aboard Sulphur Enterprise are surrounded by bolt-on oil-circulating

ControTrace pipe heating elements and

ControHeat valve jackets from CSI. Yet despite a harsh marine environment and a non-stop schedule, the bolt-on system has required neither repair nor replace- ment since the ship was launched. More important, it has eliminated the con- stant maintenance and frequent freeze- (ContinuecL on page 130)

TOP: The M/V Sulphur Enterprise carries about 24,000 tons of molten sulphur from Louisiana and Texas to Florida. A sophisticated thermal maintenance system with bolt-on heating ele- ments from Controls Southeast Inc. keeps the molten cargo flowing for loading and discharge.

BOTTOM: ControHeat! thermal maintenance modules from Controls Southeast Inc. keep valves open aboard the M/V Sulphur Enterprise.

The maintenance-free bolt-on modules keep molten sulfur at 278°F. "The Yearbook" Maritime Reporter/Engineering News