The Impact Analysis On The Material Cost In The Shipbuilding Influenced By Design Change

Shipbuilding cost is the key factor to determine the competitiveness of shipbuilding industry. And the cost of material in the entire shipbuilding cost occupies 70% of the share.Control the cost of materials is the key to control shipbuilding cost. Shipbuilding is a complicated project, while frequent design changes often make more uncertain the cost of materials. While the design change happens, material repeat purchase and inquisition,components have been produced scrap and so on are the important reasons leading to the cost overrun and even out of control in addition to causing rework production and disorder production plan. Therefore, analyzing the reasons for the design change, the time period of design change and the influence of material cost are of great practical significance to the decision making, the cost assessment and cost control of the shipbuilding enterprises.From the perspective of cost management, the paper analyzes the causes and classification of design changes. According to the process of ship production organization and the correlation of various management functions, processes and activities and technical data, the design stages of change: design data has not issued, signed a contract for the procurement, production is completed in three phases, and a detailed analysis of the change of three different stages of design change factors induced alterations and changes of material cost impact. On the basis of the above, the paper proposes the management process of design change, the method of data acquisition and illustrate the influences of various changes on the cost of materials by using case analysis.In this paper, the innovation is the change in the past mostly from the perspective of the design institute and design unit design change. But when I stand in ship manufacturing enterprises from the perspective of production design study for effects of the change of material cost, obtained through research the following conclusions and recommendations:(1)The impact of design change on the cost of materials can not be ignored, may directly lead to material cost overrun or even out of control;(2)In the cause of the impact of design change, design errors caused by the design of the production associated with the overall design of the 1/4, which should pay attention to the quality control of the detailed design stage;(3)To strengthen the division of labor division of the design department and the relevant departments to cooperate with the relevant departments to control the impact of changes in the spread of the spread, to prevent the occurrence of avalanche;(4)Through the information means to standardize the management of change management process,strengthen the application, assessment and tracking of change, and to achieve the change ofdata sharing;(5)The cost of change into the performance appraisal system, define the cost responsibility, and accordingly the main responsibility of reward and punishment.