Scanjet SC 15TW Tank Cleaning Machine

Scanjet SC 15TW Tank Cleaning Machine

The Scanjet SC 15TW is a fluid-driven, automated rotary jet head engineered for high-impact 360° impingement cleaning across small-to-medium marine cargo tanks, chemical tankers, product carriers, barges, and onshore process vessels. Constructed from AISI 316L stainless steel with Virgin PTFE, PEEK bushings, and high-purity ceramic internal wear components, the SC 15TW withstands corrosive chemical washes, aggressive solvents, and caustic CIP (Clean-in-Place) regimes.

Utilizing an internal wash-fluid-driven impeller and a planetary flow-through gearbox with an integrated 47:49 fixed-to-moving gear ratio, the unit indexes a criss-cross washing vector across the entire inner tank surface. This progressive indexing ensures full-coverage strike patterns without shadowing, reducing water, chemical, and fuel consumption during cargo-hold turnaround. The integrated adjustable turbine bypass allows shipboard engineers to set rotation speeds (2 to 4 RPM) without replacing stators, nozzles, or internal gear sets.

Model Details

• Series: SC 15TW (Twin / Quad Nozzle Turbine-Driven Class)
• Base MPN Configurations:
  • SC15TW-2-XXXX: Dual-Nozzle Configuration (Ø5 mm to Ø12 mm nozzle bores)
  • SC15TW-4-XXXX: Four-Nozzle Configuration (Ø5 mm to Ø8 mm nozzle bores)
  • SC 15TW-GL: Geared, sealed grease/oil-lubricated variant for heavy drilling mud, offshore slurry, and high-solids applications
• Standard Manufacturing Part Numbers (Examples):
  • SC15212051000-00 (Dual Ø5 mm nozzles, 1.5″ BSP)
  • SC15212061000-00 (Dual Ø6 mm nozzles, 1.5″ BSP)
  • SC15212071000-00 (Dual Ø7 mm nozzles, 1.5″ BSP)
  • SC15212081000-00 (Dual Ø8 mm nozzles, 1.5″ BSP)
  • SC15212101000-00 (Dual Ø10 mm nozzles, 1.5″ BSP)

Equipment Compatibility & Interfaces

• Marine Downpipe Flanges: Compatible with Scanjet Deckcover Flange plates (DN150, DN200, JIS 5K/10K, ANSI 150#) and Scanjet standard suspension hose assemblies.
• Portable Hose Saddles & Couplings: Direct mate to 1.5″ & 2.0″ heavy-duty rubber/composite tank cleaning hoses fitted with 1.5″ Camlock (Part A/D) or quick-connect brass/stainless steel fittings.
• Hose Winch Systems: Scanjet SC PHW (Portable Hose Winch) series and pneumatic lowering systems.
• Drop-in Retrofit Compatibility: Direct drop-in functional replacement for industry 1.5″ and 2.0″ rotary heads, including:
  • Alfa Laval / Toftejorg TZ-74, TZ-68, and TJ 20G
  • Butterworth Type K, SK, and LT systems
  • Cloud / Gamajet IV / Gamajet 8 and 9 series
  • Sellers Clean / Tanktech RJM-Series

Features

1. Flow-Through Gearbox Architecture: Driven entirely by wash fluid with a direct-drive planetary gear train, eliminating mechanical drive cables, external air supplies, and external shaft lubrications.
2. Integral Adjustable Turbine Bypass: Allows vessel crew to calibrate rotational indexing speed (1.5–4.0 RPM) via an accessible internal bypass screw, matching rotation rates to light condensates or heavy fuel/sludge cleaning requirements.
3. 47:49 Dual-Axis Planetary Indexing: Automatically plots a criss-cross jet matrix providing complete, reproducible 360° inner tank shell washing within 4 complete pattern revolutions.
4. 316L Stainless Steel & Ceramic Construction: Engineered with corrosion-resistant AISI 316L components, PEEK dynamic bushes, and alumina ceramic bearing journals for tolerance to acids, bases, and high-salinity seawater wash.
5. Dual & Quad Nozzle Versatility: Interchangeable nozzle configurations (Ø5 mm to Ø12 mm) adapt flow requirements from 5 m³/h up to 25 m³/h to suit onboard Butterworth and deck booster pumps.

Applications

• Chemical Tankers: Pre-wash and wall-wash clearing of high-purity chemical holds (methanol, aromatics, glycols, fatty acids, and caustic soda).
• Product & Crude Oil Carriers (COWs): Machine cleaning of small-to-medium cargo oil tanks, slop tanks, recovery tanks, and fuel settling tanks.
• Offshore Supply Vessels (OSV / PSV): Liquid mud tanks, brine tanks, base-oil compartments, and dry-bulk slurry hold cleaning.
• Bulk Carrier Hold Cleaning: Wash-down of cargo holds following coal, petcoke, cement, or grain transport.
• Shoreside Tank Terminals & Tank Trucks: Automated internal cleaning of road ISO tankers, rail cars, and industrial processing vessels.

Frequently Asked Questions

What is the recommended operating pressure for the Scanjet SC 15TW?

The SC 15TW operates between 4 and 12 bar (58 to 174 psi), with optimal cleaning performance achieved between 6 and 8 bar (87 to 116 psi). Running above 12 bar accelerates internal bushing wear without delivering proportional increases in cleaning impingement force.

Can the Scanjet SC 15TW be used in portable and fixed configurations?

Yes. The machine is engineered for dual deployment. It can be permanently mounted on downpipes inside cargo holds or used as a portable washing unit supported by a certified tank-cleaning hose, hose saddle, and deck-securing clamp.

How does the SC 15TW achieve 360-degree cleaning coverage?

The machine incorporates a flow-through planetary gearbox with a 47:49 gear ratio. The twin or quad nozzles rotate around both horizontal and vertical axes simultaneously, advancing slightly with every revolution to lay down an indexed criss-cross grid pattern covering all bulkheads, deckheads, and tank bottoms.

What is the difference between the standard SC 15TW and the SC 15TW-GL?

The standard SC 15TW is media-lubricated by the wash water or solvent. The SC 15TW-GL features an isolated, oil/grease-lubricated gearbox sealed by mechanical barriers. The GL version is specifically intended for drilling mud, offshore slurries, and water contaminated with heavy abrasive particulates that would damage water-lubricated gears.

How long does a full cleaning cycle take with the SC 15TW?

Cycle time depends on the set rotation speed (1.5 to 4.0 RPM) and fluid pressure. A standard full four-cycle pattern at 3.0 RPM completes in roughly 6 to 8 minutes, while deep-impact cycles tuned to 2.0 RPM require 12 to 15 minutes for dense wash coverage.