ANALISA TURUNNYA KUALITAS STERILISASI PADA ULTRAVIOLET WATER STERILIZER DI MT. DRAGONARIA DENGAN METODE FAULT TREE ANALYSIS

Ultraviolet water sterilizer is a long cylindrical device used for the sterilization of water into  drinkable water. Ultraviolet water sterilizer has two main parts: an adapter and UV tubes. The  adapter serves to drain ration electricity in accordance with the voltage and current required by  ultraviolet water sterilizer. Tubes UV is containing lamps germicides where light is equipment  major unruk make the water drinkable and the water will flow along the ultraviolet rays, so that the  water flowing in the tube is passed through the sterilization process with ultraviolet rays so that the  water unfit for consumption. The problems that the authors take in this study are the factors that  affect the declining quality of sterilization, the impact of what happens when the quality of  sterilization decreased, and what efforts made to keep the quality of sterilization is not decreased.  The method used is the method of fault tree analysis, a method to find the root of the problem  by using a fault tree and simple logic gates to help determine the basic problem. Fault tree analysis  method consists of a top event, intermediate event, and basic event where all three events are  interrelated to form the fault tree that can be seen cause and effect. Data collected through  observation, interviews, and literature directly to the subject related to the factors, the impact, as  well as the efforts of the decline in the sterilization process to the sterilizer in order to improve the  quality of drinking water.  The cause of the decline to the sterilizer sterilization process in order to improve the quality  of drinking water in MT. Dragonaria that dirty filters, dirty water tubes, and the dirty germicidal  lamp or berdampaknya resulting in less fresh water, complaint against the company, as well as the  ship operational cost is reduced. Therefore made some efforts to improve the quality of the results  of sterilization including cleaning filters, cleaning water tubes, and also clean the germicidal lamp,  as well as auxiliary engine checks periodically so that the quality of sterilization can be increased.