Services
We specialise in the design, development and application of Non-Destructive Testing (NDT) inspections. We have combined these NDT processes with integrity engineering capabilities to provide fully integrated inspection packages that directly meet the needs of the client.
Bringing innovative bespoke inspection solutions to the market through in-house development of equipment, software and robotics. We reside as the global leader for ROV-deployed subsea inspection and Non-Intrusive Inspection (NII) technologies. Our team is committed to providing accurate, proactive inspection and engineering solutions that enable clients to manage the integrity of newly constructed assets and make informed decisions crucial to the safe continued operation of mature ones.
ONLINE ROBOTIC INSPECTION AND CLEANING
We are currently delivering a tank in-service robotic cleaning and inspection service in products including Crude Oil, Light Oils, Condensates and Water.
Different robots and support technologies are considered according to tank type and product.
TANK TYPE AND PRODUCT
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Hydraulic for heavy hydrocarbons.
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Electric for light hydrocarbons.
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Manual for light hydrocarbons.
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Suction and discharge for cleaning.
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Acoustic localisation and navigation.
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Purge system for low LEL environments.
Storage tanks typically contain large volumes of valuable but potentially hazardous fluids. Inspection is a key element of the integrity management of storage tanks. The objective of the inspection is to provide information on the tank condition. Opening storage tanks for internal inspection is a lengthy and difficult process, not only will the tank be unavailable during the internal inspection, but it must be drained and cleaned before entry is possible.
There are also safety hazards associated with personnel entry for inspection. As such On-Line Inspection (OLI) methods offer an attractive alternative as they can be conducted whilst the tank is in-service and do not require vessel entry. Our technicians are experienced in using a wide variety of inspection techniques on various assets in a multitude of environments.
INSPECTION TECHNIQUES
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On-Line Inspection of Atmospheric Storage Tanks.
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Critical Zone Weld and Lower Shell Plate Inspection. Tank Wall/Shell Inspection.
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Tank Wall/Shell Inspection.
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Annular Plate Inspection and Applications.
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Statistical Analysis of Tank Floor Inspection.
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Out of Service Tank Floor Inspection.
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In-Service Inspection of Atmospheric Storage Tank Floors.
INSPECTION PLANNING
We works with clients to plan inspections of atmospheric storage tanks, considering both operational and integrity requirements.
INTEGRITY
An approach similar to planning for pressure vessel NII is adopted. This entails developing a detailed understanding of the degradation threats and associated risks to define the most appropriate inspection strategy, e.g. Type A or Type B NII. Detailed inspection requirements, i.e. probability of detection, accuracy and coverage are then defined for each zone of the tank. Finally, inspection plans, defining the inspection technique(s), coverage and locations for inspection are developed.
OPERATIONAL
Successful in-service inspection of tanks relies on comprehensive planning of all operational aspects. This relies on working closely with the tank owner/operator to establish critical design, operational and safety data relevant to carrying out the inspection. With this information, We develop a detailed project plan. This covers logistics, equipment and manpower requirements as well as site requirements to facilitate the inspection.
SCREENING FOR TANK FLOOR CORROSION
Our inspection approach provides 100% coverage of the tank floor through acoustic emission (AE) testing, performed before the in-service ultrasonic inspection. The approach is aligned with the inspection strategy. In addition, a Short-Range Ultrasonic Inspection (SRUT) is carried out on the external area of the annular plate, around the full circumference of the storage tank. Combining the results of these inspection technologies allows the following robotic in-service tank floor inspection to be focussed on specific areas of interest, highlighted by the AE and SRUT inspections.
INSPECTION TYPES
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For tanks where a Type A strategy applies, the acoustic emission is used as confirmation that corrosion is not active. If evidence of corrosion activity is found at this stage, then the strategy is revised.
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For tanks where a Type B strategy applies, the acoustic emission is used to identify areas of corrosion activity for prioritisation of coverage for the ultrasonic inspection. This ensures that the sample inspection includes representative areas of corrosion.
TANK CLEANING
We have experience in cleaning all types of storage tanks and can treat sludge in several ways. With highly trained technicians, our cleaning methods meet and exceed the latest compliance and health and safety standards.
CLEANING METHODS
- The sludge can be locally disturbed to clear a space for the ultrasonic inspection.
- The sludge can be marshalled into a particular location in the tank.
- The sludge can be mixed in with the product higher up in the tank.
- The sludge can be pumped from the floor to the roof manway and then into temporary tankage for treatment.
- The sludge can be pumped from the floor to the roof manway and then into a neighbouring tank.
We have experience in cleaning all types of storage tanks and can treat sludge in several ways. With highly trained technicians, our cleaning methods meet and exceed the latest compliance and health and safety standards.
STORAGE TANK CLEANING AND INSPECTION ROBOTIC TECHNOLOGIES
We with our partners bring over thirty years of experience in the inspection of Tanks and Vessels under the API 653 and API 575 Standards. This is inclusive of more than 5 years of experience developing and deploying Robotic
Cleaning and Inspection Systems to clientele worldwide. We run a fleet of more than ten different robots that are designed to be optimised for different applications. We have this many robot as we have found that trying to make one robot fit all tanks did not work well.
The robots are proven having been through validation trials and are ready for use in Crude, Condensate, Class II Fuels and Water.
Automated Corrosion mapping is the best tool for quick inspection of the Tank Shell walls, Pressure vessels and Pipelines.
ROV Tools for internal tank inspection used while the tank is in service have been developed. These robotic crawler devices are designed for total immersion in liquids and have been successful in providing ultrasonic thickness information on tank bottoms in clear finished product storage such as gasoline, naphtha, jet fuel, No. 4 and No. 6 fuel oils, condensate and some cru
Acoustic Emission Testing is yet another screening tool or life extension tool accepted worldwide. Acoustic Emission Testing has wide range of applications for identifying active corrosion, leaks and growing cracks mainly. Major applications include Storage Tank bottom plate inspection, Pressure proof testing of Piping systems and Pressure vessels (Metal and GRE), cylinders, cranes, spheres, etc.
Short Range Guided Wave Testing as the name suggests is used for identifying percentage metal loss for the inaccessible areas of the equipment under inspection. The major applications are Storage Tank annular ring, area under pipe support/saddle, area under pressure vessel supports, etc.
Pulsed Eddy current technique was developed to find corrosion under the insulation without removing it. This technique gives an average footprint and percentage wall loss. It is used as screening tool for inspection of the insulated pipe, pressure vessels, tanks, sphere legs, sub-sea Riser legs, Fire proof coated metal legs, etc.
We provide one of the best API 653, 570, 510 Inspection services, followed by RLA and FFS (Fitness for Services). A complete package to your inspection and Engineering needs.
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