Repair, inspection, and survey of oil tankers
An oil tanker is a specialized marine vessel designed for transporting oil and oil products.

The construction of a tanker includes several features:

  • Reinforced hull made of strong steel to minimize the risk of spills.
  • Pipelines play a crucial role in ensuring the safe and efficient transport of oil on oil tankers.
  • Tanks (cylinders): numerous sections and tanks for storing oil. Dividing it into sections reduces the risk of spillage in case of damage.
  • Special safety system: Includes pumps, valves, and emergency shutoff systems to prevent spills.
  • Firefighting equipment: Includes sprinkler systems, smoke detectors, and fire-resistant materials.
Inspection and repair of oil tankers is a set of activities aimed at maintaining operability, safe operation, and preventing oil spills, which requires the coordination of the efforts of many specialists, including engineers, welders, mechanics, and electricians.

The company SpecMorService offers a full range of services for the inspection and repair of oil tankers.

The work is carried out based on the certificates of classification societies: RMRS, RKO, NKK, RINA, BUREAU VERITAS.
Flaw Detection and Hull Repair
Repair of Tanks
Pipeline Repair
The hull
Flaw Detection and Hull Repair
The hull of an oil tanker is subjected to complex and aggressive conditions, so regular defect detection and repair are critically important for maintaining the vessel's operability and safety.

These processes require qualification and the use of specialized technologies and equipment.
Preparation for Inspection:

  • Cleaning the Hull: Before the inspection, the hull of the tanker should be cleaned of dirt, debris, and oil residues. Various methods are used for this, such as high-pressure water washing or the use of special chemical agents.
  • Neutralizing Hazardous Areas: It is necessary to secure areas where there is a likelihood of any oil or chemical residues to prevent fires or explosions.

Visual Inspection:

  • Experts Inspect the Hull: Specialists conduct a visual inspection of the hull and internal compartments of the tanker. They look for visible damages such as corrosion, cracks, deformations, and signs of leaks.
Non-destructive testing methods:

  • Ultrasonic Testing (UT): for checking metal thickness and detecting internal defects.
  • Magnetic Particle Testing (MT): for detecting surface and subsurface cracks.
  • Radiographic Testing (RT): for detecting internal defects using X-rays.
  • Liquid Penetrant Testing (PT): for detecting cracks and surface defects.

Data Analysis:

  • Assessment of the condition of the hull: Based on the inspection and control data, specialists prepare a report indicating the detected defects and their severity.
  • Development of a repair plan: Based on the report, a repair plan is developed, which includes a list of necessary works and materials.
Preparation for repairs:

  • Safety: All repair work must be carried out with safety measures in mind. This includes fire protection, the use of personal protective equipment (PPE), and the control of hazardous materials.
  • Work Schedule Development: Creating a repair schedule to minimize vessel downtime.

Removal of damaged areas:

  • Cutting and Cleaning: Damaged sections of the hull are cut out using gas or plasma cutting. Surfaces are cleaned in preparation for the installation of new elements.
  • Corrosion Removal: Corroded areas are cleaned to bare metal.

Replacement or restoration:

  • Welding: New steel panels or elements are welded in place of the damaged ones. It is important that welding is performed by qualified professionals and meets international standards.
  • Structural Reinforcement: If necessary, additional reinforcing elements are installed to increase the hull's strength.
Quality Control:

  • Inspection of Welds: After welding work is completed, all welds are inspected for defects.
  • Non-destructive Testing Methods: The same methods used for defect detection are applied for checking the quality of completed repairs.

Painting and Coating:

  • Anti-corrosion Protection: The hull of the tanker is coated with anti-corrosive compounds to protect against the effects of seawater and chemicals.
  • Final Painting: Application of paint layers for protection and to improve the appearance of the vessel.

Final Inspection:

  • Inspection of All Repair Work: Specialists conduct a final inspection of all completed work to ensure its quality and compliance with standards.
  • Documentation: A report is compiled on the completion of repair work, including all inspections and tests conducted.
oil tanks
Inspection and Repair of Oil Tanks
1. Tank Emptying: The tank is completely emptied and thoroughly cleaned to provide access for inspectors.

2. Ventilation: The tank is ventilated to remove residual hydrocarbon vapors and create safe working conditions.

3. Degassing: The procedure of removing hazardous gases, which often involves the use of inert gases.

4. Visual Inspection: A thorough visual inspection of the tank's internal surfaces is conducted to identify corrosion, cracks, and deformations. All internal components, including ladders, platforms, anode systems, and drainage devices, are checked.

5. Ultrasonic Testing: Used to determine the thickness of the tank walls, detect hidden defects, find cracks, and examine the welds and internal structure of the metal.
1. Preparatory Work: Preparing tools and materials. Creating safe working conditions: fire extinguishers, emergency lighting, personal protective equipment.

2. Surface Repair: Sandblasting or water jetting to remove rust and contaminants, coating with anti-corrosion materials.

3. Welding Work. Crack and hole repair:
  • Using welding to seal cracks and holes in the tank walls.
  • Replacing damaged areas: In case of severe damage, replacing individual panels or sections of the tank.

4. Post-repair Testing: Hydraulic testing and pneumatic testing of tank tightness.

5. Certification: Inspection and quality control of completed work, preparation of a report, and obtaining necessary certificates and permits.
Repair of Pipelines on Oil Tankers
Oil tankers transport large volumes of oil and oil products, so the integrity of pipelines plays a key role in preventing accidents and environmental pollution.

Repairing pipelines on oil tankers is a complex and multi-stage process that requires the coordination of various specialists and strict adherence to all regulations and standards.
1. Preparation for Work:

  • Planning: Developing a detailed repair plan, taking into account all necessary materials, equipment, and specifics of working on the tanker.

  • Inspection and Assessment: Visual inspection and non-destructive testing (such as ultrasonic or radiographic testing) of pipelines to detect damage, cracks, or corrosion.

  • Safety Assurance: Preparing all necessary personal protective equipment, ensuring fire safety measures, and developing an evacuation plan in case of emergency.

2. Dismantling of Damaged Sections:

  • Cleaning: Cleaning the internal and external surfaces of the pipelines from oil residues, sludge, and other contaminants.

  • Power Isolation and Degassing: Removing remaining oil and gas from pipelines to prevent possible explosions and fires during the repair.

  • Dismantling: Cutting and dismantling damaged or worn-out sections using specialized equipment (gas cutters, angle grinders, etc.).
3. Repair and Replacement:

  • Preparation of new materials and equipment: Selection of new pipes and materials for repair in accordance with the standard requirements and the tanker specification.

  • Welding and installation: Welding of new sections of the pipeline or installation of flanged connections. Welding work must be performed by qualified specialists in compliance with all safety requirements.

  • Hydraulic testing: After the completion of welding works, hydraulic testing of pipelines under pressure is carried out to verify the tightness and strength of new connections.

4. Final works:

  • Insulation and anti-corrosion protection: Application of insulation materials and anti-corrosion coatings to the new elements of the pipeline to prevent corrosion.

  • Cleaning and inspection: The newly completed work is subjected to final inspection and cleaning from all industrial contaminants.

  • Documentation: Keeping all necessary documentation of the work performed and its results, including test reports and material certificates.
[ Safety Aspects ]
Personal protective equipment
Personal protective equipment (PPE): workers must be provided with helmets, safety glasses, gloves, protective clothing, and other PPE.
Fire safety measures
Constant readiness of firefighting equipment and training of personnel in fire prevention and extinguishing methods.
Atmosphere control
Continuous monitoring of the gas atmosphere near workplaces to prevent explosions.
Only certified workers are allowed to perform the work to minimize risks and ensure high-quality repairs.

Repair of Oil Tankers

Proper technical maintenance and timely repairs ensure the long-term operation of oil tankers, reduce the risk of accidents and environmental disasters, and guarantee the safety of the crew and cargo.

Periodic inspections and repairs of oil tankers are critically important to prevent accidents and oil spills, which helps protect the marine ecosystem and maintain the profitability of shipowners.

Regular inspections ensure that the vessel complies with international safety standards, which is important for preventing incidents such as fires, explosions, and oil spills.

Contact the company SpecMorService and receive a full range of services for defect identification, repair, and maintenance of oil tankers.
Fault detection and repair is carried out on the basis of relevant certificates.
SpecMorService is recognized by the RUSSIAN MARITIME REGISTER OF SHIPPING, RUSSIAN RIVER REGISTER OF SHIPPING, Nippon Kaiji Kiokay, BUREAU VERITAS, RINA Services S.p.A as a provider of services for the ship repair, fault detection and survey of ship hulls and ship equipment.
International certification
Specmorservice  is the only company at the North-West of the Russian Federation certified by the international classification society NKK for carrying out work on  fault detection and thickness measurements .
Nippon Kaiji Kiokay
SpeсMorService is certified by the international classification society RINA Services S.p.A. and recognized as an approved facility for thickness measurements and fault detection.
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Certified by the Dutch classification society Bureau Veritas for thickness measurement and fault detection of hulls.
Certified by the RUSSIAN RIVER REGISTER OF SHIPPING for carrying out ship repair work, fault detection of hulls and ship equipment.
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View the Certificate
SpecMorService is recognized by the RUSSIAN MARITIME REGISTER OF SHIPPING as a provider of ship repair, fault detection and survey.
SpeсMorService is recognized by the RMRS as an enterprise carrying out re-equipment, modernization and repair of ships, hull structures, etc.
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Telephone: +7 962 691 66 16, +7 812 339 97 19
Adress: St. Petersburg, st. Dvinskaya 10, building 6

INN 7804329447 (Taxpayer Identification Number)
KPP 780401001 (Tax Registration Reason Code)
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