TSC’s subsea ACFM® inspection technology assures the approval for containership weld repair, saving time and costs, all within schedule.
In response to a request from Specialty Offshore Services Ltd., based in Israel, TSC has recently completed the inspection of a repair weld on the rudder of the ZIM India, a 260m containership owned by the ZIM group.
During a visual inspection procedure by SOS Ltd, a surface breaking fatigue crack had been found on the port-side of the rudder. After arresting holes had been drilled, the crack was repaired under water using the stick-welding technique. The scope of work specified that an ACFM® inspection of the repair weld and HAZ should be conducted to determine the presence or absence of any surface breaking cracks.
The inspection was carried out under the watchful eye of a Lloyd’s Register representative, using TSC’s Amigo™ system with subsea ACFM® probes, deployed by divers provided by SOS Ltd. TSC’s ACFM® Technology is the ideal inspection solution in this situation as it can be used subsea and the surface to be inspected requires relatively little cleaning or the removal of paint. Therefore, all the work could be carried out whilst the ZIM India was docked in Haifa Port to offload containers. There was no need to dry-dock the vessel, saving the customer considerable costs and time.
Frank Luikinga, TSC’s Inspector commented, “Although this was a relatively short and straightforward job, it once again showed how the use of ACFM® can make significant efficiency gains for our customers. By being able to work underwater, the inspection could be carried out without interrupting the vessel’s schedule.”
Moshe Gutman, from Specialty Offshore Services Ltd., praised the professional approach, speed of response and excellent services of TSC throughout the whole project. The Lloyd’s Register Senior Surveyor present, Sorin Bolan, called TSC’s ACFM® inspection “revolutionary” and confirmed that this could well be the first time that a repair weld has been accepted as a permanent repair, following subsea welding and inspection.
About TSC Inspection Systems
TSC Inspection Systems provides advanced Non-Destructive Testing (NDT) solutions, founded on their unique and patented Alternating Current Field Measurement (ACFM®) technology. The ACFM® technique detects surface-breaking cracks in metallic structures and components, without the need to remove protective coatings, therefore minimizing downtime for critical operations. Independent tests show that ACFM® technology is one of the world’s most reliable NDT methods, producing an audit-trail which makes the inspection process significantly more robust than traditional methods.
TSC Inspection Systems was established in 1984, as a spin-off from University College London, by a team of Professors and Lecturers who were recognised leaders in the fields of NDT, robotics and fracture mechanics. ACFM® was developed with support from BP, BG, Conoco and Shell, who were keen to significantly improve the reliability of underwater inspection, reduce the reliance on the diver operator and provide auditable inspection records.
TSC Inspection Systems is the developer and sole supplier of ACFM® technologies, with bases in Milton Keynes, Aberdeen and Singapore. TSC design and manufacture rugged, field proven ACFM® systems for subsea and topside applications, together with a wide range of probes
TSC offers customers a wide range of support in the execution of subsea and onshore inspection programmes worldwide, including ACFM® system sales and rentals, operator services and engineered solutions for diverless subsea ACFM® deployment.
For further information please visit the TSC Inspection Systems website www.tscis.com
TSC Inspections Systems,
Davy Avenue, Knowlhill, Milton Keynes, Buckinghamshire, MK5 8PB, United Kingdom.
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TSC Inspection Systems