VCI Jack-Up Rig Preservation
& Offshore Lay-up Solutions

Integrated preservation for jack-up rigs,
machinery, systems, electrical equipment
and accommodation areas.

1. RIG MECHANICAL & FLUIDS SYSTEM PRESERVATION GUIDE

Lubricated Heavy Machinery Corrosion Protection

Lubricated Heavy Machinery

• Assets Covered
Draw works, Top Drive, Rotary Table, Jacking Gearboxes, Main Engines, Generator Engines, Reduction Gearboxes.

• Main threats
Humidity, chloride deposition, condensation, oxygen exposure, stagnant lubricant films, and acidic oil residues.

• Recommended Vappro System
Vappro VBCI 850
Vappro VBCI 869 for gears/bearings
Vappro VBCI 868 for exposed steel

• Protection Objectives
Protect internal gearboxes, crankshafts, camshafts, cylinder liners, bearings, and lubrication circuits.

Offshore Rig Hydraulic System Corrosion Protection

Hydraulic Systems

• Assets Covered
CPP Hydraulic System, Steering Gear, HPUs, Cranes Hydraulic Systems.

• Main threats
Moisture contamination, condensation, oxygen exposure, and stagnant hydraulic fluid.

• Recommended Vappro System
Vappro VBCI 850

• Protection Objectives
Protect hydraulic pumps, valves, circuits, reservoirs, actuators, and steering cylinders.

Fuel and Hydrocarbon System Preservation

Fuel & Hydrocarbon Systems

• Assets Covered
Fuel Storage Tanks, Fuel Transfer Lines, Fuel Injection Systems, Diesel Day Tanks.

• Main threats
Vapor-space condensation, bottom-water corrosion, temperature fluctuations, and moisture/oxygen fuel exposure.

• Recommended Vappro System
Vappro VBCI 851

• Protection Objectives
Preserve internal tank surfaces, pipelines, transfer systems, injectors, and fuel circuit vapor spaces.

Rack Pinion Jacking Gear and Structural Assets Protection

Exposed Structural & Heavy Mechanical Assets

• Assets Covered
Rack & Pinion Jacking System, Mud Pumps, BOP Stack, Choke & Kill Manifold, Spud Cans, Wire Ropes.

• Main threats
Marine atmosphere, salt-laden air, chloride contamination, trapped moisture, stagnant fluids, and coating damage.

• Recommended Vappro System
Vappro VBCI 868
Vappro VBCI 869
Vappro VBCI 851 for internal cavities,
Vappro VBCI 887 and CorroTape for sealing faces/flanges.

• Protection Objectives
Preserve rack teeth, pinions, rope strands, sealing faces, studs, mud pump wetted surfaces, liners, and exposed steel.

Water Cooling Ballast Tanks and Void Spaces Protection

Water Cooling, Ballast & Void Spaces

• Assets Covered
Marine Seawater Cooling, Freshwater Cooling, Ballast Tanks, Void Spaces, Leg Interiors.

• Main threats
Chloride attack, MIC, pitting, scale formation, under-deposit corrosion, SRB activity, humidity cycling, and stagnant water.

• Recommended Vappro System
Vappro VBCI 844
Vappro VBCI OP 529 (Seawater)
Vappro VBCI 841 (Freshwater)
Vappro VBCI 867
Vappro VBCI OP 529 (Ballast)
Vappro VBCI 823
Vappro VBCI Moisture-Sorb
Vappro VBCI 851 (Voids/Legs)

• Protection Objectives
Prevent pitting, scale, and biological growth across cooling circuits and ballast tanks; provide vapor-phase protection in unventilated voids.

2. ELECTRICAL, CRITICAL COMPONENTS & INVENTORY PRESERVATION GUIDE

SYSTEM / ASSET CATEGORYINDIVIDUAL COMPONENTS COVEREDMAIN CORROSION DRIVER & SCIENTIFIC CAUSERECOMMENDED VAPPRO SOLUTIONPRESERVATION OBJECTIVE
ELECTRICAL, ELECTRONIC & CONTROL SYSTEMSElectrical Switchboards, SCR Rooms, MCC Panels, Control Panels, Communication & Navigation Equipment, Instrumentation & Sensors. Contact corrosion, oxidation, intermittent electrical failures, PCB degradation, high humidity, condensation, and salt/airborne contaminants. Vappro VBCI Emitters, 
Vappro VBCI Moisture-Sorb

Protect electrical contacts, relays, terminals, electronic systems, instrumentation, connectors, and sensitive electronics. 

COMPONENT SUBSTRATES & HARDWARE

Rubber Seals, O-Rings & Gaskets; Flanges & Bolted Connections. Hardening, cracking, elastomer degradation from ozone/UV exposure; crevice corrosion and thread seizure from trapped moisture.  Vappro VBCI Rubberplast (Rubber)
Vappro VBCI 869 and CorroTape (Flanges/Threads).
Preserve elasticity and sealing performance; protect threads and bolted joints from binding. 


WAREHOUSE SPARES & STORAGE INVENTORY

Spare Bearings, Mechanical Spares Warehouse. 

Atmospheric corrosion, condensation, humidity, and chloride exposure during long-term lay-up. Vappro 826S
Vappro VBCI 823
Vappro VBCI Moisture-Sorb (for general warehouse open spaces).
Provide dynamic, long-term sealed VBCI packaging protection for critical mechanical replacement parts. 

HABITATION & FACILITY AREAS

Accommodation Areas  Mold accumulation, fungal growth, and stagnant odors stemming from high humidity and restricted ventilation. Vappro VBCI Moisture-Sorb Vappro VBCI AMS Anti-Mold SprayMaintain a safe, healthy environment for crew members within living spaces. 
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