ANALISA PENURUNAN KUALITAS AIR PADA PENGOPERASIAN KETEL UAP DI MV. NYK VEGA

Abstract

ABSTRACT
Steam boiler is a closed vessel that can produce hot steam with the pressure of more than
one atmosphere by heating the water within it. Water in the process greatly affect the
condition of the kettle, so the quality must always be maintained.
The research method used in this research is descriptive qualitative method. The data
analysis technique used SWOT method to analyze the factors causing the decreasing of water
quality of boiler and the effort made to overcome these factors by identifying the strengths,
weaknesses, opportunities, and threats.
Based on the result of the research, it can be concluded that water boiler degradation is
caused by: 1) Distilled water not yet widely available on board is caused by leakage of
evaporator pipe on FWG and mechanical seal damage at distillation pump. 2) Freshwater
conditions from land are not eligible for boiler water. To overcome these factors, it is
necessary to check to determine which pipe is leaking, patching the leaking pipe using a
copper plug, opening and closing the inlet valve and evaporator outlet slowly to avoid
thermal shock, mechanical seal replacement of the distillation pump, and testing the boiler
water , addition of chemical dosing and water boiler blowdown.