فهرست مطالب zabiholah damiri

Human errors play a significant role in the occurrence of industrial accidents.  This study aims to investigate the human errors in cabin roof crane operators of a metal industry using SHERPA and SPAR-H techniques. 

In this research, first, all of the tasks of the tower crane operator were identified and analyzed. Then, adopting SHERPA technique, probable operator errors were identified in each task and the control modes and error probability were determined by and SPAR-H technique.

Analysis of SHERPA worksheets showed that a total of 217 errors were identified, of which 41% were functional, 21% review, 13% recovery, 15% communication and 10% selective. . According to the results of risk assessment, 38% of errors at the level of risk are unacceptable, 26% are undesirable, 14% are acceptable but need to be reconsidered and 22% are acceptable without the need for reconsideration. H The highest probability of error was related to the three sub-tasks of longitudinal motion, transverse motion, and high and low motion (0.3712). The lowest probability of error was below the task of recording shift reports and transmitting information orally and in writing (0.001).

the highest type of error detected is the functional type and the highest probability of error in cargo handling along the route (0.3712) and in this regard to reduce the error, the necessary corrective measures to improve The work process and the reduction of human error were made available to the personnel of the crane unit

Occupational health is one of the important issues that can affect productivity and economic development of an organization. This study aimed to determine the effect of didactic interventional Ergonomic-Safety program on workers’ productivity of an assembling industry.

This interventional study was conducted on 54 workers of assembling part of an electronic industry. Firstly, QEC method was used for Ergonomic assessment of work place and Hersey-Goldsmith questionnaire was applied for assessment of productivity. Then a comprehensive program was provided using findings of first stage assessment and identifying of existing failures. Second assessment of Ergonomic condition and productivity was done again by using QEC method and Hersey-Goldsmith questionnaire within three month of interventions. Data was analyzed by using of R software.

Mean total productivity score and mean whole body score of QEC were 75.24 and 99.40 in before intervention phase respectively. In after intervention phase, Mean total productivity score and mean whole body score of QEC were 80.16 and 97.92 respectively. Data analysis by paired-samples t-test shows that difference of productivity score in before and after intervention phase was significant (P-value˂0.05). But difference of whole body score of QEC score in before and after intervention phase was not significant (P-value>0.05).

Accomplishment of Ergonomic-Safety intervention had a positive effect on productivity score whereas had not significant effect on general condition of body limbs.