Hull Inspection and Thickness Measurement
Hull Visual Inspection
Hull structure visual inspection is carry out to determine the defective area that are required to be renew and the overall condition of the vessel. The inspectors shall assist the Superintendent in looking out for hull structural defects like Fracture, Crack, Buckling, Serious wastage based on thickness measurement, photography and Steel Weight Estimation Plan shall be submitted to the Ship Owners.
Inspection summary of hull structures including piping in way of tanks, outfitting, anodes condition and coating condition will be submitted to the Ship Owners daily upon completion of the tank inspection.
Corrosive areas are mapped out and graded like Heavy corrosion, Patch corrosion, scattered corrosion, Light corrosion, Edge corrosion, heavy scaling etc., The remaining thickness of these steel plates shall be determined by ultrasonic Thickness Measurement in order to find out the actual condition of the steel. Renewal plan on hull structure defects.
Bottom Pit Survey
Pitting shall occur mostly in Oil Storage Tanks which contains contamination that corrodes the tanks bottom. Inspection shall be carryout by checking pitting corrosion in each bay, mapping the extent and individual pits, measuring the depth of pits by a depth of pits by a depth gauge / Ultrasonic gauging.
Voyage Inspection
We are able to supply Inspectors to follow the vessel on voyage and carry out inspection on board. This will help the ship Owners save up time and cost. Repair plan and steel weight estimation shall be worked out and submitted to the Ship Owners to plan their budget and vessel repair schedule during dry-docking.
Visual examination and U.T.M gauging of ballast tanks carried out during ballast voyage by the following ways:
- Ballast Voyage using Riding Crews.
- Voyage using Rafting.
- Alongside Repair Quays in Ports.
Hull Ultrasonic Thickness Measurement (UTM)
Hull Thickness measurements are fundamental to your ship's compliance with structural periodical survey requirements.It is a Non Destructive Testing, performed to ensure that global & local vessel strength is retained. Check internal condition and remaining thickness of a vessel. Ascertain all possible areas of concern in terms of thickness measurement and close up requirements for all kind of ships such as bulk carriers, general Cargos, containers, Oil tankers, LPG Carriers, LNG Vessels, Chemical Tankers, Oil Rigs, FPSO Vessels and Drill Ships.
Thickness measurements can be obtained when the vessel is during Ballast Voyage using Riding Crews, Discharge Turnarounds, Alongside Repair Quays in ports and Dry Docks on all types of ships including rafting and Rope access, performed by qualified inspectors. Preparation of accurate and reliable report based on information from measurements, which further used for designing and budgeting repair works.
KAVZ Marine is a young & energetic Ultrasonic Thickness Measurement Company in India and providing Hull Inspection services globally.
Our team is highly experienced and qualified in this area of work as well as in many other related areas, such as: steel supervising, photo reporting, visual inspection, and pre-purchase inspection, steel weight calculation/estimation and others.
UTM for Class Surveys (all types, incl. ESP Vessels)
UTM Shipping Service can assist through all the stages:
- Preparation of document and planning.
- Organization of the ballast / survey program.
- Completion of UTM requirements to Class rules and accompanying the Class surveyor if required.
- Carrying out ultrasonic thickness measurement survey.
- Creation of a steel renewal report to cover any areas of substantial or renewable wastage.
- Provide supervision of repairs at the shipyard if required.
UTM for Owner’s Condition Survey
- With UTM surveys being such a major part of the special / intermediate / CAP and CAS surveys we are able to assist the owner or managers to reduce the pressure on them by taking a big lump of organization/preparation/supervision jobs.
- When vessel is being sold or bought (independent/neutral to both parties company) for fair assessment of vessel condition.
UTM for CAP and CAS Surveys
- Pre Docking Assessments, Work Scope Forecasting, Budgeting, Dry Dock Planning.
- Class Reporting as per ABS, BV, LR, NKK, DNV-GL, RINA, INSB and RS.
- CAP & CAS. Reporting.
- Repair Supervision, Verification of Final Work Done.
- Pre-Purchase Inspections.
- Comprehensive Vessel Inspection Program.
- Surveys can range from a few hundred readings on a small vessel up to 60.000 for a large vessel with CAP or CAS requirements.
- All our inspectors have years of experience conducting ultrasonic thickness measurement (UTM) surveys and are all qualified to minimum EN ISO 9712 level 2.