Guidelines for Improving the Efficiency of Drinking Water Production Process A Case Study of Drinking Water Plant in Nakhon Phanom Province

Abstract

The paper presents methods to enhance the efficiency of drinking water production processes through a case study of a drinking water plant in Nakhon Phanom Province. Use fishbone diagrams along with the Why-Why Analysis. To find the cause of the problem, 2 main problems need to be urgently resolved. The first problem was a delay in bottling drinking water due to two employees working intermittently, which resulted in unemployment. Therefore, the principles of Man-Machine Chart analysis are used to solve this problem. This approach allows us to increase our employees' working hours. We reduced the cycle time from 9.32 minutes to 7.76 minutes, resulting in a 1.56-minute reduction per cycle. Additionally, the average efficiency of employees working increased from 49.99% to 60.12%. The second problem is filling bottles in quantity. They are not equal. It is caused by the irregular distribution of water from the dispenser. Adjusted 24 water supply valves and measured timers. As a result, the time required to add drinking water increased from the original 14 seconds to 12 seconds, accounting for a 14.29 percent reduction.