Development of Working Quality Among a Chemical Transportation Drivers

Abstract

The purpose of the study 1) to examine sleep deprivation and fatigue among hazardous chemical transportation drivers, 2) to determine an appropriate work-rest model for reducing fatigue among hazardous chemical transportation drivers, 3) to determine an appropriate work-rest model to prevent the road accident. It was a quasi-experimental study in a liquefied petroleum gas plant in Chonburi, which has a route between Sattahip district Chonburi and Mueang District Samut Sakhon Province. There were 5 samples of all chemical transport drivers on this route. Data on sleep deprivation were collected using questionnaires of mental fatigue scale. Fatigue was assessed by using the flicker fusion instrument (CFF) was based on the International Labor Organization (ILO) guidelines for calculating rest time allowances. The other factors included demographic factors, the basic fatigue and working environment factors. Statistical analyses were performed by Z-test of proportion difference between CFF values. It was found that the rest period was 24%, or 173 minutes. Excluding the gas loading time, which took about 2 hours, there would be 53 minutes of rest time left. Hence, there were three developments of work-rest model for reducing fatigue. Three driving modes: Model 1, which is independent of the route, resting point, and rest time; Model 2, defines a safe route (Motorway No. 7) and defines breakpoints and break times. By taking 2 breaks for the sub-leg and 2 resting for the return leg, approximately 13-15 minutes each. Model 3 sets a safe route. (Motorway Road No. 7) and set breakpoints and break times. Take a break for the legs to rest 1 time and the return leg to rest 1 time, about 25-27 minutes each. The resting pattern test found that the round trip for each trip was approximately 240 kilometers and the average working time per day was 719.31±87.71 (609-947) minutes, or approximately 12 hours. The first model showed the most fatigue that the sample of fatigue as assessed through CFF analyzer and mental fatigue question were 60% and 20%, respectively. The second and third models showed that the prevalence of fatigue only as measured by the CFF was 40%and 20%, respectively. However, the Z-test for proportion difference showed no statistically significant difference between CFF values in Models 1, 2 and 3 in chemical transport drivers. Output / Outcome. The rest time was obtained for driving with a distance of approximately 240 kilometers and an average working time of approximately 12 hours per day, equal to 53 minutes. It was found that the resting model 3 had the least fatigue, which defines the route on the motorway route number 7, continue with Kanchanaphisek Road. A total of 2 breaks were included, one on the way and one on the return trip, at the Motorway Service Center.