Occupational exposure to welding gases during three welding processes and risk assessment by SQRCA method

Zeverdegani, Sara Karimi; Mehrifar, Younes; Faraji, Maryam; Rismanchian, Mansour

doi:10.29252/johe.6.3.144

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…Creating very high concentrations of O 3 , welding can also lead to obstructive pulmonary diseases. 18 CO is a lethal poison and can cause serious toxicity in welders. 19 Exposure to high concentrations of NO 2 and NO can cause acute inflammation and pulmonary edema.…”

Section: Introductionmentioning

confidence: 99%

Respiratory Exposure to Toxic Gases and Metal Fumes Produced by Welding Processes and Pulmonary Function Tests

Mehrifar

Zamanian

Pirami

2019

Int J Occup Environ Med

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Background: Welding is a common industrial process and is harmful to welders' health. Objective: To determine the effect of toxic gases and metal fumes produced during 3 welding processes on welders' incidence of respiratory symptoms and pulmonary function. Methods: This cross-sectional study was conducted in an Iranian shipbuilding industrial factory in 2018. Using the simple census method, 60 welders were selected as the exposed group. 45 staff members of the administrative unit were also recruited to be served as the control group. Welders' demographic data and respiratory complaints were collected employing a questionnaire. Fumes and gases produced were sampled from the welders' respiratory tract and analyzed by standard methods suggested by the National Institute of Occupational Safety and Health (NIOSH). Pulmonary function test was also performed for each participant. Results: The prevalence of respiratory symptoms in all welders was significantly (p<0.05) higher than the control group. The mean FVC, FEV1 and FEV1/FVC measured in welders involved in all 3 processes were significantly lower than those recorded in the control group. The spirometry pattern in welders involved in flux cored arc welding and shielded metal arc welding was obstructive; that in those involved in gas metal arch welding was mixed (obstructive and restrictive pattern). Conclusion: Exposure to welding fumes and gases was associated with pulmonary function deterioration. Welders involved in gas metal arch welding had a prevalence of pulmonary disorders compared with those involved in gas metal arch welding and flux cored arc welding.

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Section: Introductionmentioning

confidence: 99%

Respiratory Exposure to Toxic Gases and Metal Fumes Produced by Welding Processes and Pulmonary Function Tests

Mehrifar

Zamanian

Pirami

2019

Int J Occup Environ Med

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“…Approximately 2 million full-time welders work in the world. There are 5.5 million welding-related businesses in Europe [5].…”

Section: Introductionmentioning

confidence: 99%

The Relationship between Exposure to Lead-Containing Welding Fumes and the Levels of Reproductive Hormones

Dehghan

Mehrifar

Ardalan

2019

Annals of Global Health

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Background:Inhalation of lead oxide fumes may cause lead poisoning. Lead has been proven to have harmful effects on different organs. This study aimed to investigate the relationship between the concentration of lead fumes and the levels of reproductive hormones among exposed welders.Methods:A total number of 165 individuals of a construction industry of water pipelines, including 85 welders as the exposure group and 80 administrative staff as the non-exposure group were selected for study. The National Institute for Occupational Safety and Health (NIOSH) 7300 method was used for the purpose of sampling and analysis of lead fumes. Likewise, the NIOSH 8003 method was employed to determine the blood lead level. The level of luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone were measured by Chemiluminescence immunoassay(CLIA) test. Data analyses were done by SPSS ver.21 using descriptive statistics, Student›s t-test and Spearman›s correlation test.Results:The average concentration of lead fumes in the breathing zone and blood were 0.57 ± 0.12 mg/m3 and 460.28 ± 93.65 μg/L, correspondingly, which both were significantly higher than threshold limit values (TLV) and biological exposure index (BEI) recommended by American Conference of Governmental Industrial Hygienists (ACGIH)(P < 0.05). The mean levels of LH and FSH were higher in the exposed group than those in the control group (P < 0.05), however, the mean levels of testosterone were lower in the exposed group compared to non-exposed ones (P < 0.05). A strong correlation was found between the concentration of lead fumes and the blood lead levels (r = 0.82; P = 0.003). Blood lead levels were inversely related to the testosterone levels and directly related to LH (r = 0.72; P = 0.004) and FSH (r = 0.78; P = 0.001) levels.Conclusions:Occupational exposure to metal fumes containing lead among welders may alter the level of sexual hormones and potentially harm the reproductive system.

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“…Welding fumes exposure not only cause airway disease but also manifest with autonomic dysfunction [28,29]. The gases emitting from welding ПУЛЬМОНОЛОГИЯ can cause pulmonary oedema and obstructive lung disease apart from greenhouse effects [30,31].…”

Section: Resultsmentioning

confidence: 99%

Respiratory health evaluation of construction workers using questionnaire

Ojha

Spalgais

Ranjan

et al. 2021

Vestn. Ross. univ. družby nar., Ser. Med.

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Relevance . With growing economy and flourishing construction industries the comorbidities among construction workers are also raised. They are exposed to various dust, fumes, noxious gases and vapours making them susceptible to chronic airway diseases like Chronic Obstructive Lung Disease. The aim of the study was to evaluate the respiratory health status of construction workers in an unorganised sector. Materials and Methods . The data collected from National Capital of Delhi region in an unorganised sector of construction workers by using a Saint George Respiratory Questionnaire by the Institute of Occupational Health and Environmental research, Basaidarapur, Delhi, India. All the participant response was noted and the answers were evaluated to see respiratory health status of workers. Total 200 workers were evaluated. Total 182 males and 18 female participated in the study. Results and Discussion . 25% of workers reported poor health at the time of the survey, while only 4% of workers considered their health to be very good. Among the main complaints were indicated: cough, sputum production, shortness of breath, chest infections, attacks of wheezing. The overall mean of Saint George Respiratory Questionnaire core was 33.55. It increases with the working period in the construction field with 21.6% for 10years and 49.1 for 30years experienced workers, while workers with 11 to 20 years of experience, the score was 28.4. The Saint George Respiratory Questionnaire score was 35.1 in 21-30 years of experienced construction workers. Conclusion . As a result of the study, construction workers are found to be at high risk of various respiratory diseases and related disabilities. Participants in this study did not receive any treatment for respiratory problems at any clinic. This means the importance of occupational health education and the use of personal protective equipment and safe working conditions for construction workers.

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Occupational exposure to welding gases during three welding processes and risk assessment by SQRCA method

Cited by 8 publications

References 17 publications

Respiratory Exposure to Toxic Gases and Metal Fumes Produced by Welding Processes and Pulmonary Function Tests

Respiratory Exposure to Toxic Gases and Metal Fumes Produced by Welding Processes and Pulmonary Function Tests

The Relationship between Exposure to Lead-Containing Welding Fumes and the Levels of Reproductive Hormones

Respiratory health evaluation of construction workers using questionnaire

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