Quality Control

Quality Management and Control in Shipbuilding

We take our Quality very seriously!

OROSOL^® attaches great importance to the quality of every delivered ship and has established a strict quality management and control system. Shipbuilding is a complex and precise field, and quality management and control are crucial. In the manufacturing process of large ships, there are tens of thousands of individual components and assembly work. Without standardized quality management and control measures, it will lead to serious quality problems and even the risk of ship accidents.

The goal of OROSOL^® shipbuilding quality management is to ensure that the ship can be delivered on time within the design requirements and specifications, while ensuring that various technical parameters and ship performance are consistent.

During the design phase of OROSOL^® ship products, it is necessary to ensure that their technical performance, cabin layout, structure, materials, equipment, construction processes, and other aspects meet multiple quality standards and have been reviewed and approved by the corresponding classification society.

OROSOL^® shipbuilding factory has a quality inspection department, which is directly led by the general manager. The responsibilities of this quality inspection department include:

1. Responsible for product quality management, including TQM weekly, monthly, and quarterly reports, summarizing, analyzing, and evaluating quality inspection reports;

2. Responsible for quality inspection, including on-site inspection, organizing experts to analyze problems found, and negotiating solutions with experts;

3. Responsible for inspection and testing, including incoming material inspection, with physical laboratory, chemical laboratory, welding laboratory, metrology laboratory, non-destructive testing laboratory, and cabin tightness testing laboratory;

4. Coordinate relationships among all parties, apply for ship inspection, and safeguard and transfer various documents.

During the design phase of OROSOL^® ship products, a list of inspection items needs to be submitted, and a three-level inspection system should be implemented, which includes self inspection by workers, inspection by section chiefs, and inspection by dedicated inspectors. After passing the inspection, the products will be signed and transferred to the next procedure.

According to the design requirements, the raw materials purchased by OROSOL^®, such as ship hull steel plates, steel sections, welding rods, etc., must not only have material reports and qualification certificates from the supplier, but also undergo sampling inspection.

The main difficulty in quality control during ship construction is welding. Welding is an important process in ship production, which has a significant impact on the quality of ship products. So OROSOL^® shipyard has strict requirements for welding materials, welding equipment, welders, inspection procedures, qualification rates, etc., and strives to promote efficient welding methods. At present, OROSOL^® shipyard adopts testing methods such as X-ray, ultrasonic, magnetic particle, and penetrant coloring to ensure the reliability of welding.

The welding inspection in the OROSOL^® shipbuilding process mainly includes pre weld inspection, welding process control, post weld inspection, size control, and other aspects.

Pre-weld inspection includes cleaning the weld area of rust, oxide scale, oil stains, etc., to ensure that the welding area is clean and tidy. The positioning welding needs to be good and free of cracks, otherwise it needs to be rewelded. There should be no large sharp teeth inside the groove, and the position of penetration or deep penetration welding should be set according to the drawing requirements. Post-weld inspection includes checking whether there are any missing welds, insufficient welds, or insufficient weld legs in the weld seam, to ensure that there are no cracks, weld through, lack of fusion, or other issues on the surface of the weld seam. All ships produced by OROSOL^® must undergo airtightness testing, strength testing, flushing testing, and other processes to ensure reliable welding quality.

Dimensional control is another important quality control point in ship construction. Accurate size control can ensure the accuracy of the closing stage in the later stage, and control the size error within the specified range. Here at OROSOL^®, in the stage of segmented prefabrication and closure, strict requirements are placed on the marking of the ground sample to avoid cutting a large amount of base material, ensuring the accuracy of closure and the overall size of the ship.

The testing content of OROSOL^® ship products includes:

1. Hull section: cutting program testing, assembly program testing, closing program testing, welding program testing, cabin inspection, precision inspection, etc.

2. Accessories section: piping program testing, pre outfitting program testing, engine program testing, electrical program testing, etc.

3. Painting part: Painting inspection of ship structure, pre outfitting painting inspection, galvanized parts painting inspection, etc.

OROSOL^® will always prioritize the quality of shipbuilding and continuously improve various quality management systems to ensure the delivery of reliable ship products to every customer. We’re looking forward to cooperating with you!