scholarly journals Ergonomic Assessment of Working Postures Using NERPA and REBA Methods (Case Study: Abadan Oil Refinery)

Author(s):  
Rohadin Moradi rad ◽  
Shahram Vosough ◽  
Sakineh Mahdavi

Background: Improper posture is recognized as one of the risk factors in musculoskeletal disorders. So, operational postures assessment is required to correct undesirable postures and reduce musculoskeletal disorders. This study was conducted to specify the risk level of working postures utilizing REBA (Rapid Entire Body Assessment) and NERPA (Novel Ergonomic Postural Assessment) method and determining its relationship with the occurrence of musculoskeletal disorders in the operational occupations of Abadan Oil Refining Company. Methods: The current study was a cross-sectional and descriptive-analytical study. Using the Cochran formula, 315 of the operational employees of the Abadan Oil Refining Company were studied. Data were gathered by the methods of REBA and NERPA and analyzed using SPSS 20 and statistical tests. The statistical test of the Pearson correlation coefficient was applied to determine the correlation between the results of REBA and NERPA methods. The confidence level of 95% was taken into consideration. Results: Based on the results obtained from REBA method, the highest frequency percentage in the risk level of postural analysis was attributed to 206 subjects (65.4%) in the medium level, 88 subjects (27.9%) in the low level, and 20 subjects (6.3%) in the high level. Regarding the results obtained from NERPA method, the highest frequency percentage in the risk level of postural analysis was attributed to 158 subjects (50.2%) in the high level, 134 subjects (42.5%) in the medium level and 23 subjects (7.3%) were in the very high level. The statistical test results revealed that a statistically significant relationship was observed between the mean score of REBA and NERPA (P<0.001). Conclusion: This study's results declared that the NERPA method, by regarding the domain and angles of motion more than the REBA posture assessment, investigated the musculoskeletal health and was more worker-oriented.

2013 ◽  
Vol 10 ◽  
pp. 226-230
Author(s):  
Norliana Yusof ◽  
Rozimah Yusof ◽  
Firoz Mohd Firoz Ahmat Basri ◽  
Norhayati Soin

This paper presents a study in batik industry with the objective of determining any musculoskeletal disorders (MSDs) among canting batik workers in Kuala Terengganu. The MSDs symptoms were identified through questionnaires modified from a Standardized Nordic Questionnaire (SNQ) and from observational techniques by using a postural analysis tool, Rapid Upper Limb Assessment (RULA) and Rapid Entire Body Assessment (REBA). The results of questionnaires revealed that MSDs occurred at a high rate which the highest rates of MSDs prevalence were reported in shoulders (64.5%). By assessing postural using the REBA software, the score 4 placed it in medium risk level. However, there are other factors contribute to the existence of MSD such as prolong standing, repetitive movement and poor workstation design. These parameters are not taken into account in the RULA and REBA analysis. Thus, designing an ergonomic workstation may prevent awkward postures to provide a maximum comfort to the batik workers and consequently enhance the productivity. Keywords : batik, posture, musculoskeletal disorders, RULA,REBA


Author(s):  
Yovian Treesyanova

Introduction: Every worker is exposed to the risk of occupational accidents or occupational diseases when working. Awkward working postures are the postures that cause body parts to detach from its natural postures that can result in the complaints of musculoskeletal disorders (MSDs). This research intends to analyze the factors related to the complaints of MSDs suffered by the shelving staff in the library and reading room in Universitas Airlangga Surabaya. Methods: This research is observational research that applies a cross-sectional design. The sample of this research consists of 27 people chosen by the total population method. The data regarding the individual characteristics and the complaints of MSDs are obtained through interview and filling out a questionnaire that has been standardized. The data on working postures are analyzed by referring to the Rapid Entire Body Assessment (REBA) method, while the data on the complaints of MSDs are scrutinized by implementing the Nordic Body Map (NBM) method. Results: Reveal that most of the shelving staff experience very high-risk level of MSDs (40.7%). Other than that, it is noticed that the working postures consist of squatting (high-risk level), bowing (high-risk level), standing (moderate-risk level), standing with arms stretching (very high-risk level), and standing with arms stretching while tiptoeing (very high-risk level). The collected data is analyzed by using the Spearman correlation test. Conclusion: It can be stated that the strongest factor causing the occurrence of MSDs is the years of service (r=0.803) with a positive relationship, which means that the longer the years of service is, the higher the risk to experience MSDs is. Keywords: complaints of musculoskeletal disorders, individual factors, shelving staff


2020 ◽  
Vol 3 (2) ◽  
pp. 110
Author(s):  
Muhamad Bob Anthony

CV. XYZ is one of the welding workshops that serves the manufacture of iron products with 4 (four) welding workers. Welding work carries risks for experiencing Musculoskeletal Disorders (MSDs) for the welding worker. This can be caused by work posture factors that often bend and squat when doing welding. Based on the calculation results, REBA score results obtained with action level 3 (three) which states that the welding work in the CV. XYZ is at a high level of risk so immediate corrective action is needed by CV. XYZ Proposed improvement of the worker's posture when welding work is a redesign of the work station or the addition of work aids based on ergonomic principles such as the procurement of a work table for the welding work process so as to reduce the risk of workers' posture to a low risk level. Keyword : Musculoskeletal Disorders, REBA, Welding, Work PostureCV. XYZ  merupakan salah satu bengkel pengelasan yang melayani pembuatan produk besi dengan 4 (empat) orang pekerja pengelasan. Pekerjaan pengelasan memiliki risiko untuk mengalami Musculoskeletal Disorders (MSDs) bagi pekerja pengelasan tersebut. Hal ini dapat disebabkan oleh faktor postur kerja yang sering membungkuk dan jongkok saat melakukan pengelasan. Berdasarkan hasil perhitungan, didapatkan hasil skor REBA dengan action level 3 (tiga) yang menyatakan bahwa pekerjaan pengelasan di CV. XYZ berada pada level risiko tinggi sehingga diperlukan tindakan perbaikan secepatnya oleh CV. XYZ. Usulan perbaikan postur tubuh pekerja saat pekerjaan pengelasan adalah perancangan ulang stasiun kerja atau penambahan alat bantu kerja berdasarkan prinsip-prinsip ergonomi seperti pengadaan meja kerja untuk proses pekerjaan pengelasan sehingga dapat mengurangi risiko postur tubuh pekerja menjadi level risiko rendah. Kata Kunci: Musculoskeletal Disorders, Pengelasan, Postur Kerja, REBA 


Author(s):  
Masuomeh KARAMI ◽  
Saeid Ghane EZABADI ◽  
Zohreh KARAMI ◽  
Yaser SAHRANAVARD

Introduction: Musculoskeletal disorders are one of the most common causes of occupational injuries that mainly affect the low back, neck, and upper limbs. Preventing these discomforts requires assessing workplace posture using ergonomic job analysis methods. The aim of this study was to determine the rate of musculoskeletal injuries of mechanical repairs using REBA method in 2018 in Sarcheshmeh copper mine. Methods: In this descriptive-analytical study, the workplace posture of 65 mechanical repairs were evaluated using REBA method. The prevalence of musculoskeletal disorders was also obtained using the Nordic questionnaire. The collected data were analyzed by SPSS 20. Results: In this study, the prevalence of wrist discomfort was 43.07%, neck 18.46%, shoulder 33.84%, low back 53.85%, and leg 27.70%. Regarding the risk level of the right limb, 9.25% of the subjects were at a low level, 46.15% at a medium level, 32.30% at a high level, and 12.30% at a very high level. Also, regarding the risk level of the left limb, 4.62% of the subjects were at a low level, 64.61% at a medium level, 26.15% at a high level, and 4.62% at a very high level. Conclusion: These results indicated that the workplace posture of the subjects needed to be improved. To prevent the occurrence of these disorders, education is required to recognize biomechanical risk factors and correct methods of working, use of appropriate tools and appropriate to the work process, and improvement and control of stressors and environmental factors.  


Author(s):  
Yovian Treesyanova

Introduction: Every worker is exposed to the risk of occupational accidents or occupational diseases when working. Awkward working postures are the postures that cause body parts to detach from its natural postures that can result in the complaints of musculoskeletal disorders (MSDs). This research intends to analyze the factors related to the complaints of MSDs suffered by the shelving staff in the library and reading room in Universitas Airlangga Surabaya. Methods: This research is observational research that applies a cross-sectional design. The sample of this research consists of 27 people chosen by the total population method. The data regarding the individual characteristics and the complaints of MSDs are obtained through interview and filling out a questionnaire that has been standardized. The data on working postures are analyzed by referring to the Rapid Entire Body Assessment (REBA) method, while the data on the complaints of MSDs are scrutinized by implementing the Nordic Body Map (NBM) method. Results: Reveal that most of the shelving staff experience very high-risk level of MSDs (40.7%). Other than that, it is noticed that the working postures consist of squatting (high-risk level), bowing (high-risk level), standing (moderate-risk level), standing with arms stretching (very high-risk level), and standing with arms stretching while tiptoeing (very high-risk level). The collected data is analyzed by using the Spearman correlation test. Conclusion: It can be stated that the strongest factor causing the occurrence of MSDs is the years of service (r=0.803) with a positive relationship, which means that the longer the years of service is, the higher the risk to experience MSDs is. Keywords: complaints of musculoskeletal disorders, individual factors, shelving staff


Author(s):  
Mufidha Khoirul Umami

Introduction: Musculoskeletal disorders occur due to various factors: main factors, such as extortion of the muscles, repetitive activities, non-ergonomic working postures; secondary factors (pressure, vibrant, microclimate), and individual factors (age, years of service, sex, nutritional status, physical endurance, smoking habits, physical strength and anthropometry). The workers in the Injection Department at PT. ARPS mostly work with non-ergonomic working postures. The aim of this study is to analyze the correlation between age, nutritional status, and working postures and the complaints on musculoskeletal disorders among the workers in the Injection department at PT. ARPS. Metods: This study applies analytic observational method with a cross-sectional design. The sample is chosen by implementing simple random sampling with a total of 52 respondents. The data collection to measure the ratio risk level of the working postures of the injection workers is completed by using Rapid Upper Limb Assessment (RULA) measurement method, while Nordic Body Map (NBM) questionnaire form is used to measure risk level of the disorder, and anthropometry measurement is applied to evaluate the nutritional status of the workers, such as their height and weight. The data are analyzed using Spearman Rho’s Correlation (significance level α = 5%). Results: The percentage of injection workers are <35 years old (76.9%), have normal nutritional status (59.6%), 27 workers (51.9%) have low musculoskeletal disorders and 19 others (36.5%) have low-risk postures. Concluded: That there is a correlation between age (ρ-value = 0.005), nutritional status (ρ-value = 0.003) and working postures (ρ-value = 0.036) and musculoskeletal disorders on the injection workers at PT. ARPS. Keywords: injection worker, musculoskeletal disorders, Nordic Body Map, Rapid Upper Limb Assessement, working postures


2021 ◽  
Vol 14 (1) ◽  
pp. 181
Author(s):  
Coral Oliver Hernández ◽  
Shimeng Li ◽  
María José Aguado Benedí ◽  
Inmaculada Mateo Rodríguez

Background: The automotive industry is heavily affected by sick leaves caused by the handling of loads and using postures that produce musculoskeletal disorders. Research is needed to analyse their causes and find possible solutions to eliminate or mitigate these risks. Objective: Our objective was to analyse the level of musculoskeletal risk in the different work tasks performed by truck and bus mechanics. Our intention is also to analyse whether postural training and feedback can help reduce risk. Methods: The rapid entire body assessment (REBA) was used to assess the postures performed by 35 mechanics from eight branches throughout Spain. The participants were subsequently divided randomly into two groups (experimental group and control group). The experimental group (EG) was given training and feedback on their postures and the control group (CG) was not offered any type of intervention. A few months after the initial assessment, their postural load in the usual tasks was re-evaluated. Results: An overall average REBA Score: 10.49 ± 1.33. The main risk was found in the trunk and arms with sustained above-the-head postures. EG’s second results are significantly improved compared to the first (p = 0.026 *). Conclusions: These jobs have a high-risk level of musculoskeletal disorders. The course of action presented with postural training and feedback has shown satisfactory results. Nevertheless, given the size of the sample, further research will be needed to delve deeper into this possibility as a future line of intervention.


2019 ◽  
Vol 9 (1) ◽  
pp. 3-7
Author(s):  
Nihar Sultana ◽  
Md Anower Hussain Mian ◽  
Md Golam Rubby

Background: Musculoskeletal disorders (MSDs) are the most important occupational health problems particularly in dental professionals. Dentists are among the workers who are more often susceptible to this disorder, as because their work includes risk factors that may lead to this disorder. The study aims to determine the prevalence of MSDs among dental surgeons , also the risk and exposure of this disorder by assessing job postures and the correlation between them. Methods : This cross sectional study was conducted among purposively selected 86 dental surgeons working in eight different tertiary level public and private hospitals in Dhaka city. A structured questionnaire was used for data collection, where Nordic Musculoskeletal Questionnaire(NMQ) used which records the prevalence of MSDs in terms of musculoskeletal symptoms and to assess the risk and exposure of MSDs, Rapid Entire Body Assessment (REBA) score sheet, Quick Exposure Check (QEC) have been used respectively by 10- 15 minutes observing each study subject during different dental operating procedures. After data collection analysis of data was performed by using SPSS software (Version 22). Results : More than 63 % and 47 % of the participants reported pain and discomfort in at least one body region in the last 12 months and the last 7 days respectively. The major affected part was neck, followed by lower back, shoulders and hands / wrists. In different field of specialization among the study subjects musculoskeletal symptoms were highest in oral and maxillofacial surgeons followed by general practitioners, orthodontists, endodontists, prosthodontists. The exposure assessment (QEC) showed that a small percentage (22.1%) have acceptable exposure, where 30.2%, 47.7% had medium exposure and high exposure respectively. Whereas the risk assessment (REBA) showed that 59.3% of the participants were in medium risk group that necessitates further investigation and needs to implement change. Pearson’s correlation test indicated that there is a strong positive correlation between the current exposure and the risk (r = 0.832) and the relationship between exposure and risk of MSDs was found to be highly significant as p < 0.01. Highly significant association found between risk level according to REBA score and the exposure level according to QEC score with MSDs ( as p value < .01). Conclusion: This study concludes that high prevalence of MSDs and high risk levels as well as exposure levels according to REBA and QEC, suggest inappropriate and incorrect ergonomic postural habits existing among the dental surgeons which necessitates further investigation and attention on this issue to combat with this disorder among dental professionals. Update Dent. Coll. j: 2019; 9 (1): 3-7


Author(s):  
Siavash Etemadinezhad ◽  
Fateme Ranjbar ◽  
Jamshid Yazdani Charati

Background and purpose: Work-related musculoskeletal disorders usually entangle back spines, neck and upper limbs. Working as a barber paves the ground for probable high prevalence of musculoskeletal disorders. This study was designed to evaluate the working postures of sari male barbers by Rapid Entire Body Assessment method and determining the prevalence of musculoskeletal disorders using NORDIC questionnaire.Methods: In the present research, 108 Sari barbers working conditions were evaluated using Rapid Entire Body Assessment (REBA) tool, and the data on the prevalence of musculoskeletal disorders was collected using Nordic questionnaire. Microsoft Excel and SPSS were then applied to analyze the data. Quantitative variables were analyzed using the descriptive statistical methods including mean and standard deviation. Chi-square test and ordinal regression have also been applied to analyze the relationship between different variables and musculoskeletal disorders' prevalence.Results: The mean age the participants was 33.11±8.2 and the mean of work experience was 12±3.7 years. According to the results of the Nordic questionnaire, during 12 past months, 78% of the studied subjects have discovered pain and discomfort at least in one of their 9 body regions. Complaints of musculoskeletal pains in the wrist were also most prevalent (72.1%), followed by the neck (49%) and elbow pains (46.2%). Through REBA Method, the highest frequency of corrective measures was at level 2 (73.9%).Conclusion: The results of the present study indicated that the evaluated subjects working postures required correction. Also, it was found essential to train barbers in what way to identify the biomechanical and ergonomic risk factors and correct working postures.


2021 ◽  
Vol 6 (1) ◽  
pp. 27
Author(s):  
Nur Fadilah Fatma ◽  
Dhimas Eka Mustafa Putra

Identification of potential hazards and risk assessments are part of the occupational safety and health program in the risk management stage, which is conducted in an effort to prevent work accidents and occupational illness. The purpose of this research is to identify the potential hazard in PT Surya Toto Indonesia Tbk Sanitary division and analyze the root cause and give suggestion of improvement. Location and time of observation is PT Surya Toto Indonesia Tbk in April until May 2017. Object of observation is potential danger in section Slip Preparing PT Surya Toto Indonesi Tbk. The methods used by the researchers are HIRARC and FTA. The identification of potential hazards and risk assessments undertaken by researchers together with experts, which in this case are OSH officers and local supervisors, resulted in 25 different risks. With the following division, 2 low risk level, 10 medium level risk, 11 high risk level and 2 extreme level risk. After handling by the management of the company against the risk of extreme and high level, there is risk to be 2 high risk and 11 medium level risks. To reduce the value of risk, companies can make safer working conditions and better supervision of employee's unsafe behavior. Keywords: Hazard Potential Identification, Risk Assessment, SMK3, HIRARC, FTA


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