Tank Cleaning Machine
critical
Known Models (2)
Butterworth / Alfa Laval (USA/Sweden) Tank Cleaning Machine
Cleaning radius 5-20 m
· Seawater / Chemical / COW
type: Fixed/Portable Tank Cleaning Machine
size_range: ['BW-75', 'BW-100', 'BW-150']
variant_count_approx: 3
period_start_year: 1960
period_end_year: None
drive_type: Hydraulic
construction: Bronze/stainless steel, single/dual nozzle
Common Failures:
- • Nozzle erosion
- • Gear mechanism wear
- • Seal failure
- • Drive mechanism blockage from cargo residue
Service: Standard tank cleaning machine maintenance.
Spares: Alfa Laval (ehem. Butterworth). Lead time: 2-4 weeks.
Scanjet Marine (Sweden) Tank Cleaning Machine
Cleaning radius 5-25 m
· Seawater / Chemical / Crude Oil Washing (COW)
type: Programmable Tank Cleaning Machine
size_range: ['SC-15', 'SC-30', 'SC-50', 'SC-75']
variant_count_approx: 4
period_start_year: 1975
period_end_year: None
drive_type: Hydraulic (driven by cleaning medium pressure)
construction: Stainless steel/bronze, dual-nozzle rotating head, programmable pattern
Common Failures:
- • Nozzle erosion from abrasive cargo residues
- • Gear drive mechanism wear causing pattern failure
- • Seal failure causing leak at tank penetration
- • Drive turbine blade erosion from COW operation
Service: Nozzle inspection after each cargo change. Gear mechanism lubrication per manufacturer. Seal inspection quarterly. Performance test (shadow diagram) annually.
Spares: Scanjet Marine (Gothenburg). Lead time: 2-4 weeks. Nozzle sets: keep onboard.