PENENTUAN INTERVAL INSPEKSI OPTIMAL TERHADAP PERALATAN VITAL CEMENT MILL DENGAN BERBASISKAN KESEMPATAN

Cement Mill merupakan salah satu deparTemen Yang ada pada Pabrik Indarung IV yang berfungsi untuk mengolah klinker ditambah dengan gipsum menjadi semen yang siap untuk di jual. Pabrik Indarung IV memiliki dua Cement Mill yaitu Cement Mill IIIB dan Cement Mill IIIC. Peralatan Cement Mill diantaranya terdiri dari Mill, Separator, Elevator, I'CC, Belt Conveyor, dll' Dalam menjaga agar proses produksi tetap berjalan efektif maka usaha yang dilakukan diantaranya dengan menerapkan kebijakan perawatan terhadap mesin/peralatan setiap 15 hari sekali. Namun dalam realisasinya selama ini cukup rendah yaitu 57,57% untuk Cement Mill IIIB dan 51,51% untuk Cement Mill IIIC, sehingga Cement Mill sering mengalami shutdown. Berdasarkan Iaporan harian pemeliharaan Cement Mill diketahui bahwa nilai availability Cement Mill dari tahun 20a4 hingga bulan September 2006 yaitu 71,27% untuk Cement Mill IIIB dan 76,67oh untuk Cement Mill IIIC. Penyebab shutdown Cement Mill adalah mekanikal, standby, proses/produksi, power off, PMC. Shutdown karena kerusakan peralatan-peralatan Cement Mill khususnya peralatan vital dapat diminimasi dengan melakukan kegiatan perawatan terencana terhadap peralatan Cement Mill. Agar perawatan terencana dapat terlaksana tanpa harus menambah fre kuensi shutdown, maka penyebab -penyebab shutdown alat tadi dapat dimanfaatkan sebagai kesempaton untuk melakukan kegiatan inspeksi sehingga downtime minimum. Peralatan yang menjadi objek penelitian adalah Separator pada kedua Cement Mill. Separator ini dipilih berdasarkan metode penentuan peralatan vital berdasarkan tingkat penggunaannya.Metode yang dipakai dalam penentuan intental inspeksi optimal terhadap peralatan vital Cement Mill adalah penentuan interval inspeksi optimal dengan kriteria minimasi downtime yang dikembangkan oleh A.K.S Jardine

Ergonomics ablution (wudu') workstation design for shopping complex

Ablution workstation is considered as one of the crucial public facilities especially in country with high Muslim population, but still lacking specifically regarding the ablution area (Besari et al.,2009). The design for the ablution workstation should consider and examine the element of humanities to maintain the law of Islam. For low-risk, secure and user-friendly settings, the ergonomic feature should be considere

Maximum acceptable frequency of lift for combined manual material handling task in Malaysia

Background : Extensive studies have been carried out over the years to determine the maximum acceptable weight that a worker is capable of lifting in a given situation among Occidental populations across Europe and US. Nonetheless, studies that place emphasis on using lifting frequency as the quantifying task parameter, especially in developing countries such as Malaysia, appear to be in scarcity. Hence, this study determined the maximum acceptable frequency of lift (MAFL) for combined manual material handling (MMH) tasks amongst Malaysian males. Method : Two lifting loads were considered in this study: 1 kg and 5 kg. Each subject adjusted his frequency of lifting using a psychophysical approach. The subjects were instructed to perform combined MMH task as fast as they could over a period of 45 minutes without exhausting themselves or becoming overheated. The physiological response energy expenditure was recorded during the experimental sessions. The ratings of perceived exertion (RPE) for four body parts (forearms, upper arm, lower back and entire body) were recorded after the subjects had completed the instructed task. Results : The mean frequencies of the MMH task had been 6.8 and 5.5 cycles/minute for lifting load of 1 and 5 kg, respectively, while the mean energy expenditure values were 4.16 and 5.62 kcal/min for 1 and 5 kg load, respectively. These displayed a significant difference in the Maximum Acceptable Frequency of Lift (MAFL) between the two loads, energy expenditure and RPE (p < 0.05) whereby the subjects appeared to work harder physiologically for heavier load. Conclusion : It can be concluded that it is significant to assess physiological response and RPE in determining the maximum acceptable lifting frequency at varied levels of load weight. The findings retrieved in this study can aid in designing tasks that do not exceed the capacity of workers in order to minimise the risk of WRMSDs

Psychological impact of noise exposure among machine and non-machine operators in construction industry

Noise hazard is reported as a serious issue among the construction industry in Malaysia. The aim of the study is to determine the personal noise exposure level and the prevalence of psychological health effect symptoms among the machine and non-machine operators on construction site in Malaysia. Sixty-one (61) construction workers were participated as respondents and categorized into machine and non-machine operators group. All respondents were monitored for 8 hours working time using personal noise dosimeter for personal noise monitoring. Questionnaires and interviewed sessions were used to determine the prevalence of psychological health effect symptoms. The results obtained reveal that the construction workers have high personal noise exposure level where machine operators are significantly higher compared to non-machine operators. The prevalence of psychological health effect symptoms among machine operators is 89% higher than the non-machine operators. Lastly, there is a significant positive relationship between the personal noise exposure level and the prevalence of psychological health effect symptoms among the construction workers

A review on ergonomic assessment tool at small and medium enterprise (SME) industries

An ergonomic assessment is a foundation for designing a comfortable workplace, which is safer and healthier with less injuries, optimized wellbeing, and improved overall workplace performance. Previous studies showed that most of the ergonomic assessment tools assess physical risk factors related to Musculoskeletal Disorder (MSD). It is interesting to investigate other ergonomic risk factors that are important to include in an ergonomic assessment tool that is related to workers’ productivity in SME industries. This study set out to review the ergonomic assessment tools that have been widely used in Small and Medium (SME) Industries. To achieve the study objective, the review was conducted by searching the Google Scholar and Science Direct database. About 83 articles were identified in the first process. However, only 25 articles are included in this study after the screening process. The review found that there is lacking assessment on other ergonomic risk factors, such as psychosocial and cognitive risk factors that would also contribute to workers' productivity. Many ergonomic assessment tools that have been used in Small and Medium (SME) Industries only focused on assessing the physical risk factors that affect MSD. The knowledge and understanding of various ergonomic assessment tools will help the researchers plan the next step to improve the tool that will assess the significant ergonomic risk factors that affect worker's productivity. It might help to establish a common set of ergonomic assessment tools that are more effective, efficient, and user-friendl

Reliability Analysis of Covid-19 Risk Management System in Malaysia Higher Learning Institution

Reliability concerns the extent to which a measurement of a phenomenon provides a stable and consistent result. Reliability is also concerned with repeatability. For example, a test will be reliable if measurement is repeated and conducted under constant conditions, hence will give the same result. This article attempts to present the result of a reliability study in the development of the Covid-19 risk management system in a Malaysia Institution of Higher Learning. The system is called C19-HIRAO. Two types of reliability study were explored for this purpose namely interrater reliability study and test-retest method. Interrater reliability study consists of Cohen’s Kappa statistic and percent agreement (conventional method). Interrater Cohen’s Kappa and Test-retest method were performed by the raters from Universiti Malaysia Pahang (UMP). The result proved that the developed C19-HIRAO has achieved an almost perfect agreement (0.92), moderate agreement (0.75), and very high relationship (1.00) for Interrater percentage agreement, Interrater Cohen’s Kappa, and test-retest method respectively. In conclusion, although this system is still newly developed, the risk rating value obtained is consistent among different raters. The value of this risk rating is also stable and reliable over the time when test-retest reliability is conducted within the stipulated time frame by the same rater

Risk assessment for manual handling activities in a dairy industry

Workers in the dairy industry work in integrated plant facilities such as process hall, maintenance and utility, warehouse logistics, and quality checking. All workers are at risk for work-related injuries and job-related illnesses. This study aims to assess the ergonomic risk factor in manual handling activities in the dairy plant industry. Field observation and manual handling assessment charts (MAC) tool determined the ergonomic risk factor. The process hall department is the main sector where there are various areas from process raw receiving, raw storage, batching operations, and pasteurised storage to filling and packaging operations. The result found several hazards of manual activities, such as awkward posture, forceful exertion, repetitive motion, static posture, and contact stress. The highest score of ergonomic risk factor was found at the filling workstation during carrying weight load activities. Thus, controlling exposure to occupational hazards is the fundamental method of protecting worker

Characterization of banana peels waste adsorbent for preliminary study of methylene blue removal from aqueous solution

This paper presents the removal of methylene blue (MB) from aqueous solution using adsorbent produced from Banana peels waste (BPW). Banana peels waste adsorbent (BPWA) was prepared via carbonization in laboratory muffle furnace for 1 h. A preliminary study was performed on the adsorption reaction by varying the initial concentration of MB, adsorbent dosage, contact time, pH and temperature of the aqueous solution. Under the best conditions obtained, the maximum percentage removal of MB is approximately 99 %. The potential of BPWA as dyeing wastewater adsorbent was proven by Scanning Electron Microscopy (SEM) analysis, N2 adsorption-desorption analysis and Fourier Transform Infrared Spectroscopy (FTIR). From the results, the synthesized adsorbent shown a good percentage removal of MB. In addition, the optimum conditions for the adsorption study are 1 g of adsorbent in the 1 g L-1 of MB initial concentration, for 1 h at pH 8 in 65 ?C. This study reveals potential of BPW in removal of MB dyes from aqueous solution however, further studies are required to establish the applicability of the synthesized adsorbent for the treatment of wastewater from textile industry

Risk factors associated with occupational stress among Malaysian construction professionals

Background: Construction industries that focus on project-based nature, pressure, and long hours may lead to job-related stress among workers. In many emerging nations, robust economic growth plans generate occupational depression, anxiety, and stress among construction industry personnel. This study aims to determine the relationship between these items and the risk factors (demographic) among Malaysian construction professionals. Methods: A cross-sectional study was carried out among 173 Malaysian construction professionals. A DASS-21 questionnaire is used to survey eligible respondents. Results: Findings show that construction professionals have a high level of stress (54.9%), anxiety (48.5%), and depression (37%). Gender is significantly associated with stress (p = 0.000) and depression (p = 0.000). In turn, stress (p = 0.038), anxiety (p = 0.000), and depression (p = 0.001) all demonstrate a significant relationship with health status Conclusions: Health status is the risk factor most significantly associated with occupational stress. Given the findings, construction managers can help protect their employees and their mental health by promoting a healthy workplace through stress management and social activities

Consumers' perception of automatic emergency braking (AEB): Theoretical model and construct development

Due to remarkable developments, various automated driving systems, known as Advanced Driver Assistance Systems (ADAS), have been implemented, and the entire range of human driver activity in modern vehicles is undergoing changes. However, whether or not the consumers will accept and satisfy the emerging technologies, especially Automatic Emergency Braking (AEB), remains a big question. Therefore, it is vital to understand how vehicle consumers or potential consumers decide to use or not to use, and what they expect or perceive of AEB. This work intends to review the published works on AEB to understand the current market of the technology. In order to investigate the user's perception, a developed theoretical model is planned to be adopted. The review was conducted by searching from Google Scholar and the ScienceDirect database through Universiti Malaysia Pahang online databases. The knowledge and understanding of the current AEB market and theoretical model will help researchers plan the next steps to explore consumer or potential consumer perception