Fuel distribution is an important aspect of fulfilling the customer’s need. It is risky because it can cause tardiness that can cause fuel scarcity. In the process of distribution, many risks are occurring. House of Risk is a method used for mitigating the risk. It identifies seven risk events and nine risk agents. Matrix occurrence and severity are used for eliminating the minor impact risk. House of Risk 1 is used for determining the Aggregate Risk Potential (ARP). Pareto diagram is applied to prioritize risk that must be mitigated by preventive actions based on ARP. It identifies 4 priority risks, namely A8 (Car trouble), A4 (Human Error), A3 (Error deposit via bank and underpayment), and A6 (traffic accident) which should be mitigated. House of Risk 2 makes for mapping between the preventive action and risk agent. It gets the Effectiveness to Difficulty Ratio (ETD) for mitigating action. Conducting safety talk routine once every three days with ETD 2088 is the primary preventive actions.
Organic Liquid Fertilizer is a liquid made from the decomposition of organic material such as plant residue and animal waste in which its content is more than one nutrient. The advantages of this fertilizer are to resolve a deficiency of nutrient and provide the additional nutrients quickly. Most of the liquid organic fertilizers sold in the market are inappropriate with the national standard of agriculture in Indonesia that is in value range 4 to 9 of the potential of Hydrogen (pH). Majority of the existing fertilizer contains the pH value of less than 4 or higher than 9. It means these fertilizers are too sour and overly bases. This condition hampers the plant growth. Thus, it is necessary to supply the proper fertilizer. This study primarily aims to develop the optimum composition of the organic liquid fertilizer that satisfies the national standard of Indonesian agriculture. Taguchi method was used to design the optimal composition and experimental study was conducted to determine a value of Signal Noise Ratio as well as to validate the best composition. Statistical analysis by using t-test was done to test the hypothesis. The result of this study shows that the new composition of organic liquid fertilizer is valid to satisfy the national standard of pH value that is 7. Thus, it is known that the optimum composition encompassing A1 is the cow urine with 1000 ml, B3 is the probiotic with 6 ml, C1 is the goat dung with 500 grams, and D3 is the spices with 30 grams (A1-B3-C1-D3).
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