Sectors & Operating Environments
RAMIS Consulting engineers maintenance and asset integrity strategies for gold and bauxite mines, Gulf of Guinea FPSOs, 50Hz thermal and hydro power stations, and heavy port and civil fleets across Ghana and West Africa.
Mining & Mineral Processing
Gold (Tarkwa, Obuasi, Ahafo, Damang, Iduapriem) & Bauxite (Awaso)
Gold comminution circuits and open-pit or underground Heavy Mobile Equipment (HME) fleets operate under abrasive laterite dust, high ambient temperatures, and long maritime supply lines. A full SAG or ball mill stoppage costs $60,000 to $120,000 per hour in deferred gold production, while CAT 785/793 haul truck outages run $3,500 to $6,500 per hour.
Field Operating Constraints (5 Failure Drivers)
- •Accelerated abrasive wear on crusher mantles, mill liners, and slurry pump wet-ends from high-silica Tarkwaian and Birimian ore
- •6-to-16-week maritime transit and customs clearance lead times through Tema and Takoradi ports for critical pinion bearings, gearsets, and motors
- •Temperate OEM preventive maintenance intervals that fail to account for fine laterite dust ingress into final drives and hydraulic circuits
- •Free-text SAP PM and IBM Maximo work-order closure notes that mask chronic bad-actor failure modes across haul and shovel fleets
- •Strict Minerals Commission of Ghana and EPA Ghana environmental containment, tailings pumping, and hoist safety audit mandates
RAMIS Engineering Scope
We execute SAE JA1011 RCM-II studies on primary crushers, SAG/ball mills, and CIL/CIP pumping trains; fit Weibull (β, η) life models to HME component replacements; and calculate critical spares min/max reorder points calibrated to Tema port lead times.
Oil & Gas (Offshore & Midstream)
Gulf of Guinea FPSOs (Jubilee, TEN, Sankofa) & Tema Oil Refinery (TOR)
Offshore Floating Production Storage and Offloading (FPSO) vessels in the Gulf of Guinea and downstream refining and tankage assets in Tema and Takoradi face aggressive marine corrosion, high mobilization costs for offshore maintenance crews, and zero tolerance for loss of primary containment.
Field Operating Constraints (4 Failure Drivers)
- •Corrosion Under Insulation (CUI), CO2/H2S internal piping erosion-corrosion, and weld-toe fatigue in high-saline Gulf of Guinea marine air
- •High POB (Personnel on Board) and offshore supply vessel mobilization costs when gas compression or water-injection trains trip unexpectedly
- •Extended turnaround windows when pressure vessel and piping inspections are scheduled by calendar rules instead of quantitative risk
- •Petroleum Commission of Ghana (L.I. 2204 local content) and EPA Ghana statutory integrity and flaring compliance limits
RAMIS Engineering Scope
RAMIS delivers quantitative Risk-Based Inspection (RBI) programs per API 580/581, Fitness-For-Service (FFS) structural assessments per API 579-1 / ASME FFS-1, and RCM-II task lists for topside rotating gas compressors and export pumps.
Energy & Power Generation
Thermal (Aboadze, Kpone, Sunon Asogli), Hydro (Akosombo, Bui) & GRIDCo/ECG Networks
Thermal combined-cycle stations, hydro plants, 161kV/33kV transmission corridors, and mine captive power islands must maintain 50Hz stability under thermal cycling, fuel-switching, and coastal salt-fog contamination.
Field Operating Constraints (4 Failure Drivers)
- •50Hz grid frequency excursions and step-load switching stresses on gas/steam turbine bearings, rotors, and generator stator windings
- •Dissolved gas generation and thermal insulation aging in generator step-up (GSU) and 161kV/33kV substation power transformers
- •Hidden failures in IEC 61850 protective relays, DC battery banks, and switchgear trip coils that escalate feeder faults into bus blackouts
- •Availability and interruption performance compliance reporting mandated by the Energy Commission of Ghana and the Public Utilities Regulatory Commission (PURC)
RAMIS Engineering Scope
We model generation availability per IEEE 493 (Gold Book) and feeder interruption indices (SAIDI, SAIFI, CAIDI) per IEEE 1366, establish hidden-failure testing intervals per SAE JA1011, and structure CMMS transformer and turbine asset registers.
Heavy Infrastructure & Construction
Port Container Cranes (Tema & Takoradi), Quarries & Civil Earthmoving Fleets
Port terminal cranes, quarry crushing spreads, and civil earthmoving fleets along the Accra-Tema-Takoradi industrial corridor lose margin when hydraulic contamination and uncoded breakdown repairs drive down physical availability.
Field Operating Constraints (3 Failure Drivers)
- •Premature axial-piston pump, proportional valve, and hoist cylinder seal wear caused by moisture and particulate ingress exceeding ISO 4406 cleanliness limits
- •Absence of Life Cycle Costing (LCC) and Weibull B10 replacement modeling in multi-brand heavy fleet procurement and overhaul decisions
- •Fragmented maintenance logs across spreadsheets and unstandardized CMMS registers that prevent fleet-wide MTBF and MTTR tracking
RAMIS Engineering Scope
We build ISO 14224 equipment hierarchies and failure code catalogs, implement ISO 4406 hydraulic contamination control protocols, and establish repair-versus-replace LCC models for port and earthmoving fleets.