01
Site survey
We assess the project, tank access and site conditions. The survey informs a detailed method and helps reduce risk using the right working practices.
Tank cleaning & gas free
Specialist cleaning support
Prepared for demanding tank-cleaning requirements.
Mari-Tec supports demanding tank-cleaning requirements with a prepared, professional workforce. Our team provides the service and coordination required during major turnarounds and tight maintenance schedules.
Careful planning, skilled work and attention to safety and environmental controls guide every assignment. We focus on reliable performance and clear communication throughout the scope.
Site surveyRisk controlConfined spacesGas free
Survey, safety & planning
The work starts before the tank is entered.
02
Confined-space readiness
Where required, confined-space-qualified teams can support man entry to deliver cleaning to the required standard under controlled conditions.
03
Atmosphere management
As tanks empty, vapours can create volatile fuel-air mixtures. Our trained professionals use advanced cleaning systems and controlled atmosphere assessment approaches.
Tank-cleaning workflow
A clear, controlled route from assessment to restart.
Hold a site meeting to assess requirements, tank access and overall site conditions.
Provide a quotation and, upon approval, issue the detailed method statement and risk assessment.
Pump existing fuel into a holding tank, making temporary connections where required.
Access and clean the tank in accordance with the detailed method statement.
Provide photographs after cleaning for clear completion records.
Refill the tank from the holding tank through fuel-polishing equipment where required.
Bleed pipework and pumps, then restart boilers and machinery as needed.
Issue a waste transfer notice for waste management and washing associated with the operation.
Additional services
More support while the tank is accessible.
Fuel quality support
Fuel polishing, plus fuel-oil or diesel testing and analysis, with reports on contamination and water content.
Inspection & testing
Non-destructive testing and inspection, plus pipework and tank pressure testing when the tank is empty.
Tank-change support
Bund cleaning and lining, or cleaning and inspection ahead of a change in tank contents or product.