Conference Paper

Investigation of the Application and Training Requirements of Ram Analysis in Ship Machinery System

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Abstract

Majority of the world trade is carried out by ships due to their economic advantages comparing with other transportation methods. For ship owners, trade ships may have high operating and maintenance costs if ship engine room crew is not aware of the consequences of poor maintenance, inadequate operation, system reliability and etc. Besides, continuous operation of a ship's machinery in long intervals often requires overhauls to be carried out over certain periods of time. Although the operating and maintenance costs of the vessels cannot be reduced below certain levels, the time allocated for maintenance could be decreased considerably. By means of the technologic advancements, ships and port facilities can conduct more rapid maintenance & repair operations. Hence, port facilities can reduce the allocated time for ships to a minimum level in order to manage their port more effectively. However, this brings a new challenge for ship crew as their time for such operations is reduced considerably. Reliability, availability and maintainability (RAM) is a critical aspect to make estimations about ship machinery condition as well as to improve reliability of ship machinery systems. There are some challenges for smooth operation & maintenance activities of ships such as time shortage. Besides, the planned maintenance programs are designed in accordance with the running hours of the machines or the determined scheduled periods based on the machinery’s or equipment’s specifications recommended by the manufacturers. Moreover, the number of spare parts required for the systems to be maintained can be crucial and need to be checked regularly. Even though, these procedures can be evaluated with new approaches to analyse and estimate the reliability, availability, and maintainability of systems in ship engine room. The employees who perform maintenance on the ships must meet the requirements of the necessary competence. Thus, the job division can be designed according to these competency levels in the designing phase of job allocation. An effective personnel assessment should be carried out by the operating company according to the positions of the employees. Also the level of education they have received can be another indicator. In addition, the evaluation reports taken from the previous experiences of the employees and the past ships in their carrier can be examined in detail in order to identify their competence ratings towards various operations. For this reason, this paper investigates the application requirements of RAM analysis as a new approach in ship machinery systems by considering the existing applications and practices in different fields. As result, suggestions of RAM analysis towards training phase of marine engineers is provided in terms of decision making, resource utilization, appropriate maintenance scheduling, cost management, integration with other business activities, meeting the business demand.

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