scholarly journals Analisa Resiko Postur Kerja Berdasarkan Hasil Evaluasi Menggunakan Metode Quick Exposure Check

2021 ◽  
Vol 5 (1) ◽  
pp. 51-62
Author(s):  
Achmad Ganni Rizaldi ◽  
Atikha Sidhi Cahyana
Keyword(s):  
Exposure Level ◽  
Total Exposure

UMKM XYZ merupakan industri bergerak dibidang pembuatan sepatu, produk yang menjadi unggulan adalah jenis sepatu bordir. Proses pengerjaan pembuatan sepatu bordir membutuhkan penanganan secara manual oleh pekerja sehingga pada proses produksinya masih terdapat serangkaian postur kerja yang tidak ergonomi. Metode penilaian postur kerja yang digunakan yaitu Quick Exposure Check (QEC). Metode QEC dipilih karena metode ini merupakan metode yang sederhana dan mudah untuk dipahami serta metode ini juga menilai dari dua sudut pandang, yaitu worker assessment dan observer assessment. Berdasarkan dari penelitian ini perhitungan kembali total exposure level dari usulan perbaikan fasilitas kerja, diharapkan mendapat nilai exposure level dengan range

scholarly journals STUDI RESIKO KERJA OPERATOR LABORATORIUM PENGUJIAN AIR DENGAN MENGGUNAKAN METODE QEC (QUICK EXPOSURE CHECK) (STUDI KASUS PT. SUCOFINDO BATAM)

2017 ◽  
Vol 6 (2) ◽  
Author(s):  
Benedikta Anna Haulian Siboro ◽  
Surifto Surifto
Keyword(s):  
Standing Position ◽  
Product Performance ◽  
Exposure Level ◽  
Body Parts ◽  
Work Processes ◽  
Testing Laboratory ◽  
Total Exposure ◽  
Water Testing ◽  
Testing Laboratories ◽  
Hours Of Work

Laboratorium PT Sucofindo Batam memiliki laboratorium pengujian yang berkaitan dengan mutu dalam hubungannya dengan keselamatan, keandalan dan kinerja produk atau kualitas material. Salah satu pengujian yang dilakukan di laboratorium ini adalah pengujian air. Pekerjaan ini dilakukan dengan cara manual dan berulang ulang dalam posisi berdiri yang dilakukan selama rata-rata 8 jam kerja dengan 1 jam istirahat setelah 4 jam bekerja. Penelitian ini bertujuan untuk menganalisa fasilitas kerja yang ada di laboratorium pengujian air dengan pendekatan Quick Exposure Check (QEC) di PT.Sucofindo Batam. Pengumpulan data dilakukan dengan studi lapangan, wawancara terhadap pekerja, dan kuesioner. Output yang didapat berupa total exposure level dari skor 4 bagian tubuh. Hasil penelitian menunjukkan bahwa terdapat keluhan pada bagian punggung, bahu dan leher dikarenakan proses kerja yang membungkuk. Selain itu hasil QEC menunjukkan ≥ 50% (61,32%) yang artinya  perlu tindakan (action) yang harus diambil yaitu perbaikan fasilitas kerja guna mengurangi keluhan dan kelelahan akibat kerja. Kata Kunci : laboratorium pengujian air, keluhan, kelelahan, QEC The Laboratory of PT Sucofindo Batam has testing laboratories that related with quality  in relation to safety, reliability and product performance or material quality. One of the tests conducted in this laboratory is water testing. This work is done manually and repeatedly in a standing position performed for an average of 8 hours of work with 1 hour of rest after 4 hours of work. The purpose of this research is to  analyze existing work facilities in water testing laboratory with Quick Exposure Check (QEC) approach in PT.Sucofindo Batam. Data collection was done by field study, interview to workers, and questionnaire. Output obtained in the form of total exposure level of score of 4 body parts. The results showed that there are complaints on the back, shoulders and neck due to work processes that bend. In addition QEC results show ≥ 50% (61.32%) which means need action that must be taken to  improve the work facilities to reduce complaints and fatigue due to work. Keywords: water testing laboratory, complaints, fatigue, QEC

scholarly journals Perbaikan Postur Kerja Operator Pengelasan dengan Metode Quick Exposure Check (QEC)

2018 ◽  
Vol 4 (1) ◽  
pp. 17
Author(s):  
Eka Indah Yuslistyari ◽  
Aden Adhadin
Keyword(s):  
Research Method ◽  
Exposure Level ◽  
Design Tools ◽  
Total Exposure ◽  
Work Posture ◽  
A Company ◽  
Action Levels ◽  
Customer Orders

CV. Surya Teknik Mandiri is a company engaged in lathe and welding services located in Serang-Banten. Work is usually done such as screw making and welding of axle cages, where products are made according to customer orders. This study focused on one part of the work that has the highest level of fatigue through a fatigue questionnaire caused by squat work postures, namely the welding section involving two operators. This study aims to determine the measurement value of the exposure score, exposure level and to reduce MSDs complaints with the design of repair tools for welding operators in this study using the Quick Exposure Check (QEC) research method by distributing observer questionnaires and operators, and using the Anthropometry approach in measuring design tools for improving operator work posture. Based on the results of research on welding operators 1, the total exposure score was 106 with an exposure level of 59.55%. While for operator 2, there is a total exposure score of 124 and an exposure level of 69.66%. An action level for both operators needs further research and changes. Next, repairs are made to reduce the exposure level value in the welding work. Repairs are made with the aim of making the condition safe, comfortable and do not cause complaints MSDs when working, namely at the workstation standing by designing a tool in the form of a welding work desk. After implementing the welding workbench for the two operators and recalculating the QEC value, the operator one exposure level of 48.31% and for operator 2 49.43% with action levels need further research.

ASSESSMENT OF THE TOXICITY AND HAZARD OF SODIUM LAURYL SULFATE AT DIFFERENT EXPOSURE ROUTES

2020 ◽  
pp. 56-59
Author(s):  
M. V. Bidevkina ◽  
M. I. Golubeva ◽  
A. V. Limantsev ◽  
I. N. Razumnaya ◽  
T. N. Potapova ◽  
...  
Keyword(s):  
Sodium Lauryl Sulfate ◽  
Exposure Level ◽  
Hazardous Substance ◽  
Lauryl Sulfate ◽  
Upper Respiratory Tract ◽  
Mucous Membranes ◽  
Chloroprene Rubber ◽  
Upper Respiratory ◽  
Exposure Routes ◽  
Number Of Cells

Sodium lauryl sulfate is the most common surfactant used in the production of detergents, chloroprene rubber, plastics, artificial furs and in pharmaceutical industry. Sodium lauryl sulfate is a moderately hazardous substance when introduced into the stomach (DL50 for white mice and rats is in the range of 2086-2700 mg/kg), has a pronounced local irritant effect on the skin and mucous membranes of the eyes, has a skin-resorptive, sensitizing and pronounced cumulative effects. The threshold for acute inhalation action is set at 15,3 mg/m3 for changes in the function of the nervous system and irritating effects on the mucous membranes of the upper respiratory tract (an increase in the total number of cells in the nasal flushes).Recommended for approval tentative safe exposure level of sodium lauryl sulfate in the air of the working area is 0.2+ mg/m3 (aerosol).

scholarly journals Interaction of Very Large Scale Motion of Coherent Structures with Sediment Particle Exposure

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 248
Author(s):  
Sencer Yücesan ◽  
Daniel Wildt ◽  
Philipp Gmeiner ◽  
Johannes Schobesberger ◽  
Christoph Hauer ◽  
...  
Keyword(s):  
Coherent Structures ◽  
Large Scale ◽  
Numerical Study ◽  
Local Maximum ◽  
Wave Number ◽  
Exposure Level ◽  
Sediment Particle ◽  
High Wave Number ◽  
Large Scale Motion ◽  
Scale Motion

A systematic variation of the exposure level of a spherical particle in an array of multiple spheres in a high Reynolds number turbulent open-channel flow regime was investigated while using the Large Eddy Simulation method. Our numerical study analysed hydrodynamic conditions of a sediment particle based on three different channel configurations, from full exposure to zero exposure level. Premultiplied spectrum analysis revealed that the effect of very-large-scale motion of coherent structures on the lift force on a fully exposed particle resulted in a bi-modal distribution with a weak low wave number and a local maximum of a high wave number. Lower exposure levels were found to exhibit a uni-modal distribution.

scholarly journals Contributions and limitations of using machine learning to predict noise-induced hearing loss

2021 ◽  
Author(s):  
Feifan Chen ◽  
Zuwei Cao ◽  
Emad M. Grais ◽  
Fei Zhao
Keyword(s):  
Machine Learning ◽  
Hearing Loss ◽  
Roc Curve ◽  
Prediction Error ◽  
Noise Exposure ◽  
Model Construction ◽  
Support Vector ◽  
Exposure Level ◽  
Noise Induced Hearing Loss ◽  
Current Review

Abstract Purpose Noise-induced hearing loss (NIHL) is a global issue that impacts people’s life and health. The current review aims to clarify the contributions and limitations of applying machine learning (ML) to predict NIHL by analyzing the performance of different ML techniques and the procedure of model construction. Methods The authors searched PubMed, EMBASE and Scopus on November 26, 2020. Results Eight studies were recruited in the current review following defined inclusion and exclusion criteria. Sample size in the selected studies ranged between 150 and 10,567. The most popular models were artificial neural networks (n = 4), random forests (n = 3) and support vector machines (n = 3). Features mostly correlated with NIHL and used in the models were: age (n = 6), duration of noise exposure (n = 5) and noise exposure level (n = 4). Five included studies used either split-sample validation (n = 3) or ten-fold cross-validation (n = 2). Assessment of accuracy ranged in value from 75.3% to 99% with a low prediction error/root-mean-square error in 3 studies. Only 2 studies measured discrimination risk using the receiver operating characteristic (ROC) curve and/or the area under ROC curve. Conclusion In spite of high accuracy and low prediction error of machine learning models, some improvement can be expected from larger sample sizes, multiple algorithm use, completed reports of model construction and the sufficient evaluation of calibration and discrimination risk.

scholarly journals Asbestos Exposure Level and the Carcinogenic Risk Due to Corrugated Asbestos-Cement Slate Roofs in Korea

2021 ◽  
Vol 18 (13) ◽  
pp. 6925
Author(s):  
Eun-Soo Lee ◽  
Young-Ki Kim
Keyword(s):  
Asbestos Exposure ◽  
Health Impact ◽  
Pooled Analysis ◽  
Carcinogenic Risk ◽  
University Hospital ◽  
Exposure Level ◽  
Lifetime Cancer Risk ◽  
Indoor Exposure ◽  
Asbestos Cement ◽  
Environmental Causes

Asbestos-cement slate roofs are one of the most common environmental causes of asbestos exposure. However, few studies have examined residential asbestos-cement slate-related exposure and its effects on human health. This study was performed to evaluate cumulative asbestos exposure levels and to calculate the Excess Lifetime Cancer Risk (ELCR) of residents of asbestos-cement slate-roofed houses. We reviewed previous Korean literature to estimate the concentration of airborne asbestos from asbestos-cement slate roofed buildings. Finally, eight studies were selected, and a pooled analysis was performed. The results derived from the pooled analysis were combined with the data from a health impact survey conducted from 2009 to 2016 at the Environmental Health Center for Asbestos (EHCA) of the Yangsan Pusan National University Hospital, and a carcinogenic risk assessment was performed. As a result, the representative value of the indoor exposure concentration related to asbestos-cement slate was found to be 0.0032 f/cc on average, and the representative value of the exposure related to occupational asbestos-cement slate dismantling and demolition was found to be 0.0034 f/cc. In addition, the ELCR of asbestos-cement slate related indoor exposure and occupational dismantling and demolition was found to be of medium risk, and the ELCR of residential dismantling and demolition of asbestos-cement slate was less than 10−6, indicating that the risk was low. Since there is no threshold for carcinogenicity related to asbestos, this should not be ignored even if the risk appears low, and it would be reasonable to calculate the carcinogenic risk based on total lifetime exposure. More studies on asbestos exposure scenarios and the scope of similar exposure groups through additional data collection and further analysis of risk are needed.

scholarly journals Early childhood traffic-related air pollution and risk of allergic rhinitis at 2–4 years of age modification by family stress and male gender: a case-control study in Shenyang, China

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Shuai Hao ◽  
Fang Yuan ◽  
Pai Pang ◽  
Bo Yang ◽  
Xuejun Jiang ◽  
...  
Keyword(s):  
Air Pollution ◽  
Allergic Rhinitis ◽  
Preschool Children ◽  
Case Control Study ◽  
Family Stress ◽  
Case Control ◽  
Male Gender ◽  
Exposure Level ◽  
Early Exposure ◽  
Control Study

Abstract Background Few studies have explored the modifications by family stress and male gender in the relationship between early exposure to traffic-related air pollution (TRAP) and allergic rhinitis (AR) risk in preschool children. Methods We conducted a case-control study of 388 children aged 2–4 years in Shenyang, China. These children AR were diagnosed by clinicians. By using measured concentrations from monitoring stations, we estimated the exposures of particulate matter less than 10 μm in diameter (PM10), nitrogen dioxide (NO2), ozone (O3), carbon monoxide (CO), and sulfur dioxide (SO2) in preschool children aged 2–4 years. After adjusted potential confounding factors, we used logistic regression model to evaluate the odds ratio (OR) and 95% confidence interval (CI) for childhood AR with exposure to different air pollutants according to the increasing of the interquartile range (IQR) in the exposure level. Results The prevalence of AR in children aged 2–4 years (6.4%) was related to early TRAP exposure. With an IQR (20 μg/m3) increase in PM10 levels, an adjusted OR was significantly elevated by 1.70 (95% CI, 1.19 to 2.66). Also, with an IQR (18 μg/m3) increase in NO2, an elevated adjusted OR was 1.85 (95% CI, 1.52 to 3.18). Among children with family stress and boys, PM10 and NO2 were positively related to AR symptoms. No significant association was found among children without family stress and girls. Conclusions Family stress and male gender may increase the risk of AR in preschool children with early exposure to PM10 and NO2.

scholarly journals Ethylene Oxide Exposure in U.S. Populations Residing Near Sterilization and Other Industrial Facilities: Context Based on Endogenous and Total Equivalent Concentration Exposures

2021 ◽  
Vol 18 (2) ◽  
pp. 607
Author(s):  
Patrick J. Sheehan ◽  
Ryan C. Lewis ◽  
Christopher R. Kirman ◽  
Heather N. Watson ◽  
Eric D. Winegar ◽  
...  
Keyword(s):  
Cancer Risk ◽  
Ethylene Oxide ◽  
Environmental Protection Agency ◽  
Cancer Risk Assessment ◽  
Exposure Concentration ◽  
Increase Cancer Risk ◽  
Total Exposure ◽  
Industrial Facilities ◽  
Equivalent Concentration ◽  
Current Risk

Given ubiquitous human exposure to ethylene oxide (EO), regardless of occupation or geography, the current risk-specific concentrations (RSCs: 0.0001–0.01 ppb) from the U.S. Environmental Protection Agency (EPA) cancer risk assessment for EO are not useful metrics for managing EO exposures to the general U.S. population. The magnitude of the RSCs for EO are so low, relative to typical endogenous equivalent metabolic concentrations (1.1–5.5 ppb) that contribute ~93% of total exposure, that the RSCs provide little utility in identifying excess environmental exposures that might increase cancer risk. EO monitoring data collected in the vicinity of eight EO-emitting facilities and corresponding background locations were used to characterize potential excess exogenous concentrations. Both 50th and 90th percentile exogenous exposure concentrations were combined with the 50th percentile endogenous exposure concentration for the nonsmoking population, and then compared to percentiles of total equivalent concentration for this population. No potential total exposure concentration for these local populations exceeded the normal total equivalent concentration 95th percentile, indicating that excess facility-related exposures are unlikely to require additional management to protect public health.

scholarly journals Metal artifacts in intraoperative O-arm CBCT scans

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Juha I. Peltonen ◽  
Touko Kaasalainen ◽  
Mika Kortesniemi
Keyword(s):  
Image Quality ◽  
Imaging Modality ◽  
Nonlinear Effects ◽  
Exposure Level ◽  
Metal Artifacts ◽  
Imaging Protocol ◽  
Metal Implants ◽  
Comprehensive Determination

Abstract Background Cone-beam computed tomography (CBCT) has become an increasingly important medical imaging modality in orthopedic operating rooms. Metal implants and related image artifacts create challenges for image quality optimization in CBCT. The purpose of this study was to develop a robust and quantitative method for the comprehensive determination of metal artifacts in novel CBCT applications. Methods The image quality of an O-arm CBCT device was assessed with an anthropomorphic pelvis phantom in the presence of metal implants. Three different kilovoltage and two different exposure settings were used to scan the phantom both with and without the presence of metal rods. Results The amount of metal artifact was related to the applied CBCT imaging protocol parameters. The size of the artifact was moderate with all imaging settings. The highest applied kilovoltage and exposure level distinctly increased artifact severity. Conclusions The developed method offers a practical and robust way to quantify metal artifacts in CBCT. Changes in imaging parameters may have nonlinear effects on image quality which are not anticipated based on physics.

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