Ergonomic design of automatic fish scale remover to reduce work posture risk in the occupational group of fish scale removing.

Abstract

The purposes of this quasi-experimental research were: 1) assess the fatigue of the fish scale remover practitioners on different parts of the body 2) assess the level of ergonomics risk throughout the body 3) ergonomic design of automatic fish scale remover to reduce work posture risk. The total of 16 samples from all 5 fish store. Body part discomfort form, Rapid Entire Body Assessment (REBA) form were used as a major tool for the ergonomic design of automatic fish scale remover to reduce work posture risk and body proportions design by Pearson method. Results demonstrated that the most fatigue parts on the left-side body were neck (56.25%), upper back (50.00%), lower back (50.00%), hand and wrist (50.00%), respectively. The most lassitude parts on the right-side body were upper arm (75.00%), lower arm (62.50%) and neck (56.25%), respectively. The ergonomic risk assessment using the REBA method on both the left and the right sides had the risk level in the range of 8-10 (56.25%), indicating high risk, investigate and implement change. After ergonomic design and modified-automatic fish scale remover. The sample was used for one week. The results showed that both on the left and right sides, has a lower level of fatigue. ฟand the left-side the risks were reduced to the level of 4-7 indicating medium risk, further investigation, change soon (62.50%) and level of 2-3 indicating low risk, change may be needed (37.50%). right-side the risks were reduced to level of 4-77 indicating medium risk, further investigation, change soon (100%). The results suggested that ergonomic design of automatic fish scale remover can reduce ergonomic risks.