Ship repairs are often subjected to various external forces in the course of operation, coupled with the influence of human factors, and deformation and damage will occur, causing the ship to lose its normal technical condition. The reasons are roughly as follows. Diesel engine repair

1. External force

Ships are constantly subjected to bending stress and torsion stress due to their frequent lifting, swaying, turning and other motion states on waves.

2. Corrosion

Metal corrosion is a natural loss that occurs all the time.

3. Human effect

As a result of improper use and management of the ship by people, accidents such as average damage occurred. The above is tangible damage, and the normal technical condition of the ship can be restored after repair.

4. Invisible loss

Due to the advancement of science and technology, the technical status of ships has become obsolete and backward, and needs to be rebuilt, updated or scrapped.

Due to the above-mentioned reasons, various degrees of loss and damage occurred during the operation of ships, which affected the normal technical conditions of the ships, and gradually affected the normal operations of the ships, posing a threat to the safety of the ships. Therefore, repairs are needed to eliminate these defects, maintain and restore their normal technical conditions, and prevent the continued loss and damage of various components of the ship.

Basic tasks of ship repair

The "Ship Repair Regulations" and "Ship Repair Work Meeting Minutes" promulgated by the Ministry of Communications of the People's Republic of my country have made clear classification and grading of ship repairs in accordance with the reasons leading to ship repairs, repair scope and interval. The maintenance department of the shipping company shall formulate a plan for the repair time and cost of each specific ship accordingly. The person in charge of the various departments on the ship should be familiar with the scope of various types of ship repairs, so as to compile the ship repair project application form (hereinafter referred to as the ship repair list) according to the type of ship repair, so as to avoid the unlimited expansion of the repair scope and cause time. , Energy and money wasted.

The ship repair order is the basic technical document for the ship repair project proposed by the ship and maintenance department to the shipyard. It is the basis for the maintenance department and the shipyard to arrange the ship repair plan, allocate the ship repair cost, and the shipyard to prepare for the construction work before the ship enters the factory for repair. . Therefore, the compilation of the ship repair list should strive to make the ship’s repair parts clear, accurate, and technically reasonable. Only in this way can we guarantee the smooth progress of the repair work and meet the technical quality requirements.