[Survey of noise exposure and permanent hearing loss among Shadris spinning factory workers of Yazd using Task Base Method [TBM]]

During last decades one the hazardous agents on workers health has been workplace noise. The aim of this study was to investigate the level of noise exposure in different jobs and noise induced permanent threshold shift in relation to noise level and work experience. This is a cross-sectional and descriptive study that performed among total workers. Dosimetry was done for determination of accurate noise exposure level during an eight-hour s shift for each job group. Audiometry was performed in a standard acoustic room by the audiologist. The obtained data was analyzed by means of SPSS software. Mean of age was 36.58 +/- 6.76 [19-52 years] and minimum, maximum and mean of work experience were 1, 18, 11.08 +/- 5.47 respectively. Mean of hearing loss was 15.38 +/- 8.63 in right ear and 16.31 +/- 9.51 in left ear and total hearing loss was 14.72 +/- 8.33. A significant relationship was also identified between noise intensity and work experience with hearing loss. Findings of this study indicated that there is a high prevalence of noise pollution in different parts of workplace. Considering the obtained results, that shows positive effect of noise and work experience on hearing loss, the necessity of improvement of control and protection measures is of prime importance

[ Survey of causes of occupational accidents at working place under protection of Yazd social security organization in 2005]

In rapid development in industrialization, lack of attention to safety principles causes a raise in work-related incidents. According to ILO, around one-third of work-related deaths is due to. The aim of our study is to survey the causes of occupational incidents at working place under protection of Yazd Social Security Organization in 1384. This is a descriptive study that was done to determine the incident frequency and factors affecting on it. The study included 776 incidents selected among all of the incidents occurred in 1384 in Yazd. The data were collected from available information in social security organization. The findings showed that the center of province, has had the most number of incidents [%41 .2]. Also, the mean age of people who had incident was 29.5. The most causes of incident were related to falling down [%20.8]; fingers were injured more than other parts [%3 1.5]. The highest consequence of the incidents was related to injuries [%34]. The distribution of age among the subjects indicated the prevalence of incident in young workers more than others, which is in the same line with other researches. The cause of most incidents was falling

study of the prevalence of color blindness in yazd railway staff

Color blindness is one of the common genetic disorders in all human Communities The genes which specify the red and green sensitive photopigments are located on the X chromosomes within the X band. Abnormalities are inherited as an X-linked recessive trait. This results in a much higher prevalence of red - green color deficiency in males than in females. It's prevalence rate in human communities is a bout 8% and for females about 0.5%. Due to the importance of color vision for locomotive drivers,358 railway staff and locomotive drivers in Yazd were randomly selected and tested for red -green color blindness and visual acuity. To do this,a questionnaire including information on age, level of education, occupation, smoking, visual acuity, color blindness and awareness of color blindness was prepared. The 38-plates edition of the Ishihara test was used to examine red - green color blindness and Snellen chart was also used to check visual acuity. Of the subjects27 [7.54%] showed color blindness, 6 of them being locomotive drivers. Three showed protanopia, 5 protanomaly, 4 deuteranopia and 15 deuteranomaly. The prevalence of color blindness showed no correlation with visual acuity, smoking, age and the level of education [p-value > 705]. The frequency distribution of having a good knowledge, partial knowledge and lack of knowledge on their color blindness was 18.52%, 48.15% and 33.33% respectively. Prevalence of red-green color blindness in rail way staff [7.54%] is comparable to other communities [2 -10%]

Application of a hazard and operability study method to hazard evaluation of a chemical unit of the power station

The aim of this study was to identify the hazards, evaluate their risk factors and determine the measure for promotion of the process and reduction of accidents in the chemical unit of the power station. In this case and qualitative study, HAZOP technique was used to recognize the hazards and problems of operations on the chemical section at power station. Totally, 126 deviations were documented with various causes and consequences. Ranking and evaluation of identified risks indicate that the majority of deviations were categorized as "acceptable" and less than half of that were "unacceptable". The highest calculated risk level [1B] related to both the interruption of acid entry to the discharge pumps and an increased density of the acid. About 27% of the deviations had the lowest risk level [4B]. The identification of hazards by HAZOP indicates that it could, systemically, assess and criticize the process of consumption or production of acid and alkali in the chemical unit of power plant

[Determining the general health status of workers of Kuushk mine]

Health of workers of a community, especially in an industry oriented country, is very important. Mental s'problem of workers in an industrialised country is the most problems, because their environment and work conditions are risk factors. The aim of this study was to determine the health statue of workers of Kuushk mine based on General Health Questionnaire to decrease problems of physical, mental and social health of workers and increase their economical efficiency. This was a cross-sectional studuy, carried out on 262 workers of Kuushk plumb and zinc mine. Twenty eight item General Health Questionnaire [GHQ-28] in workers was examined. All of workers participated in the study.GHQis a measure of current mental and physical health. The most commons coving methods are bi-modal[0-0-1-1] and Likert styles [0-1-2-3]. All data were transferred directly in to SPSS. For data analysis ANOVA, Pearson chi-square was used. About 40% of subjects reported a history of accident. The results of GHQ showed that general health of 25/8% of participants was not good. The physical health of 24/5%, anxiety of 28/9%, social function of 43/6% and depression of 7/5% of subjects were not suitable. More than 21% of them were not satisfy from their work and their laborer. About 85% of them had a rotation shift. It is concluded that concluded that health status of workers in different parts of industry must be assessed and appropriate programs should be designed for improvement of health status of workers