Risk assessment on low levels of nacl salt using fault tree analysis in small and medium-sized industries Madura salt

Industrial Engineering Department, Universitas Trunojoyo Madura, Jl. Raya Telang, Bangkalan, Jawa Timur 69162

^* Corresponding author: trisita@trunojoyo.ac.id

Abstract

Madura is the largest salt producer in East Java Province, with a percentage of production of 75% of the total, so this has a vast potential to produce an abundance of salt. The production stages are pre-production processes, production processes, and post-production. This study aimed to analyze NaCl levels and impurities in salt. Solving the problem requires risk analysis in salt manufacturing from start to finish. This study used the Fault Tree Analysis method, which was expected to find out the root of the problem in salt making. Data was collected by observing and documenting the salting site and interviewing salt farmers. The lab test result indicated that the NaCL levels of salt and seawater were below the standard, with an average NaCL level of 85%, where NaCL levels were less than 94% and had a water content of more than 5%. The NaCl content of seawater was also below the standard, with an average content of 51%, whereas usually, seawater contains NaCL of 86%. In addition, the lab test result for Pb contains, as impurities, was 1.33 ppm. This result was categorized as low level where the standard of Pb cannot allowed above 10 ppm.