TBIT - Tank Bottom Inspection Tool - ROSEN Group · 2014-01-23 · under pipes, heating coils,...
2
TBIT SERVICE STORAGE TANK BOTTOM INSPECTION The storage of hydrocarbon or chemical liquids in above-ground storage tanks is an important element in the energy supply chain. A major concern for the integrity of a storage tank is the condition of the tank bottom. Whereby corrosion is one of the most common threats. Our TBIT service is a reliable and effective means of managing your storage tank integrity exceeding the inspection requirements con- tained in the EEMUA159 and API653 codes. THE SOLUTION ROSEN’s TBIT uses a combination of Magnetic Flux Leakage (MFL) technology to detect and size corrosion defects and Eddy Current (EC) technology to determines the precise loca- tion of the defects – and, notably, whether they are on top or the bottom of the steel plates. EC also provides information about the lift-off between the sensors and the steel plate. This makes it possible to distin- guish corrosion from general debris and to inspect coated steel plates and surfaces in poor condition without the need for grit blasting.TBIT is suitable for use in restricted areas, under pipes, heating coils, close to plate welds and annular plates. With a single TBIT up to 850 m2 of tank bottom can be inspected per day. KEY ADVANTAGES • High inspection capacity/short inspection period • Coated tank floors can be inspected • Automatic feature sizing and discrimination between inter- nal and external features • Steerable in any direction, the TBIT can inspect the annular plates and areas close to the plate welds • High sensitivity to corrosion and low sensitivity to debris • Online data evaluation provides minute information about tank floor condition • Low profile tool design, enables remote controlled inspec- tion of areas underneath heating coils and piping REPORTING Data collected during the inspection process is integrated with a database containing detailed tank information and presented as both a hard-copy report and by means of our software, “ROSOFT for Tanks”. The Inspection data is as- sessed on-site with a report available immediately after the inspection is complete. “ROSOFT for Tanks” is a versatile data management and viewing platform leading the operator through the entire maintenance process from inspection to assessment and repair planning. In addition, ROSOFT can be used to integrate inspection data from a range of inspection sources. Tank inspection with ROSEN’s TBIT ROSOFT screenshot: representation of a tank floor map www.rosen-group.com
Transcript of TBIT - Tank Bottom Inspection Tool - ROSEN Group · 2014-01-23 · under pipes, heating coils,...
TBIT SERVICESTORAGE TANK BOTTOM INSPECTION
The storage of hydrocarbon or chemical liquids in above-ground storage tanks is an important element in the energy supply chain. A major concern for the integrity of a storage tank is the condition of the tank bottom. Whereby corrosion is one of the most common threats. Our TBIT service is a reliable and effective means of managing your storage tank integrity exceeding the inspection requirements con-tained in the EEMUA159 and API653 codes.
THE SOLUTIONROSEN’s TBIT uses a combination of Magnetic Flux Leakage (MFL) technology to detect and size corrosion defects and Eddy Current (EC) technology to determines the precise loca-tion of the defects – and, notably, whether they are on top or the bottom of the steel plates. EC also provides information about the lift-off between the sensors and the steel plate. This makes it possible to distin-guish corrosion from general debris and to inspect coated steel plates and surfaces in poor condition without the need for grit blasting.TBIT is suitable for use in restricted areas, under pipes, heating coils, close to plate welds and annular plates. With a single TBIT up to 850 m2 of tank bottom can be inspected per day.
KEY ADVANTAGES•High inspection capacity/short inspection period•Coated tank floors can be inspected•Automatic feature sizing and discrimination between inter-
nal and external features•Steerable in any direction, the TBIT can inspect the annular
plates and areas close to the plate welds•High sensitivity to corrosion and low sensitivity to debris•Online data evaluation provides minute information about
tank floor condition•Low profile tool design, enables remote controlled inspec-
tion of areas underneath heating coils and piping
REPORTINGData collected during the inspection process is integrated with a database containing detailed tank information and presented as both a hard-copy report and by means of our software, “ROSOFT for Tanks”. The Inspection data is as-sessed on-site with a report available immediately after the inspection is complete.
“ROSOFT for Tanks” is a versatile data management and viewing platform leading the operator through the entire maintenance process from inspection to assessment and repair planning. In addition, ROSOFT can be used to integrate inspection data from a range of inspection sources.
Tank inspection with ROSEN’s TBIT
ROSOFT screenshot: representation of a tank floor map
www.rosen-group.com
© 2013 ROSEN Swiss AG. All Rights Reserved. TBIT_SF_E_CMR_2.0_201301
TECHNICAL SPECIFICATIONSTool specification Principle High-resolution MFL combined with
Eddy Current (EC) technology
Analysis method Signal-based
Sample rate Every 1.0 mm (1/32")
No. of sensors 72
Inspection width 450 mm (17.75")
Tool speed Up to 1.2 m/s (4 ft/s)850 m2/day (9200 ft2/day)
Detection threshold Minimum depth 0.2 t
Pinholes Min. Ø 3 mm (0.10")
Sizing accuracy* Depth ±0.2t
Length ±3 mm (±0.10")
Width ±10 mm (±0.39")
Steel Steel type S235J, S355J or equivalent
Plate thickness 4–16 mm (0.160"–0.630")
Top-side/bottom-side defect discrimination Yes
Note: For primed or coated bottom plates, pit detection and sizing is feasible up to a maximum coating thickness of 4 mm (0.16").* The sizing accuracy given is based on a certainty level of 85 %, as accuracy levels are contingent upon inspection conditions.Contact ROSEN for more detailed information.Abbreviations: t = wall thickness
TBIT SERVICESTORAGE TANK BOTTOM INSPECTION
www.rosen-group.com
