Redesigning the actuating mechanism of the penstock valves at dock number six Malta Drydocks

Abstract

The main aim of our project was to find an adequate solution for a recurring fault in the actuating mechanism of the flooding penstock valves in number six dock at Malta Drydocks. This dissertation is the result of research and work carried out over a period of eight months in order to solve the problem. The opening chapters contain an introduction to the subject and investigate the various aspects of the problem. This enabled us to consider a number of possible improvements. As emphasis was placed on a practical solution, a full-size planetary roller screw, one of the most likely alternative actuating mechanisms, was manufactured. This is treated in the second part of our work. Various manufacturing firms and other sources of reference were consulted in the preparation of this dissertation. In addition, a wealth of information was obtained directly from Malta Drydocks staff. As a result of the work carried out, we are certain we have made a valid contribution towards the solution of the penstock valve problem at Malta Drydocks.