Health, safety and the working environment are of paramount importance, especially in the high-risk environments found at facilities in the oil and gas industry, where hazards are inevitable and accidents may lead to regrettable situations such as explosions, oil spills and other disasters. The high number of accidents and disasters at such facilities bring safety-related matters to the fore. The complexity of the communication process is very often underestimated, where failures in communication could lead to major disasters. This paper investigates the role of communication management and the organizational communication climate and their impact on incidents and disaster avoidance. This study embarks on a quantitative approach involving 260 personnel from high-risk workplaces at oil and gas facilities, based on purposive sampling. Hypotheses were tested using PLS-SEM to identify causal relationships and for mediation analysis. The findings of this study show that communication management and the organizational communication climate have a significant impact on disaster avoidance. The organizational communication climate is also found to be a significant mediator for the relationship between communication management and disaster avoidance. Communication management and the organizational communication climate need to be enhanced and to be integrated with other technology and innovation to improve safety regulation adherence in the oil and gas industry.
A geo-environmental evaluation to build and maintain the transmission tower often requires a large amount of spatial information to determine foundation and slope stability. Geo-electrical or resistivity measurements are capable of managing large amounts of spatially related information, enabling various layers of data to be integrated.These geophysical methods are readily available can assist engineering geologist and geotechnical engineers in obtaining the material properties and boundaries of sub-surface materials.Multi-criteria analyses are carried out to assess the development suitability of the transmission tower's geo-environment based on properly measured and weighted variables. It is demonstrated that Geo-electrical or resistivity measurements have high functionality for geo-environmental assessments.
Rock mass in Malaysia seems to experience high rate of weathering due to its tropical climate. The understanding of weathering process in influencing rock mass behaviour is vital. Previous studies have found that many geotechnical characteristics such as weathering are controlled by the density and arrangement of fractures within the rock, but the relationships between fracture patterns and weathering grades are not typically considered. In this study, weathered granitic rock samples were assessed to determine the correlation of weathered rock characteristics namely mineralogy, weathering grade, joint characteristics with density, UCS and P-wave velocity. The results of the experiment showed that the weathering grade was found to have inverse impacts on all assessed joint characteristics parameters such as joint spacing, joint inclination except for frequency of joint set. Whilst, the rock strength such as R value, UCS and Vp appeared to decrease with increase of weathering grade.
Land subsidence is a geomorphological event that affects Earth’s structure and physiognomy. This phenomenon occurs when the groundwater volume changes and results in the movement and sinking of sediment. Several studies have been conducted to identify major causes or factors that may lead to land subsidence. It was found that land subsidence intensity is influenced by several factors, i.e. terrain slope and aspect, land use, soil moisture content, and distance to a river. Population density contributes to continuous changes in land use. Deep investigation of factors that contribute to land subsidence such as population density is important. This study investigated the relationship between land subsidence and population density contributing to continuous land-use changes. The study area was a highly populated slum area along the Musi River in Palembang, Indonesia. Factors that have high contribution to land subsidence were considered in developing a land subsidence susceptibility map. Susceptibility analysis was done using the Analytical Hierarchy Process (AHP) method. Land subsidence features were associated with slum features and the result revealed a significantly high correlation (r = 0.844) between actual land subsidence areas and the developed susceptibility map.
The presence of dyes in water sources that act as contaminants is hazardous to human and animal health. Therefore, this research was conducted on the removal of methylene blue (MB) using granitic residual soil-supported nano zero-valent iron (Gr-nZVI), to examine its potential use as an efficient adsorbent. Batch adsorption experiments were conducted in this study to examine the impact of initial dye concentration, contact time, dosage, pH and temperature effets. Based on the results, it can be inferred that Gr-nZVI (with Kd=0.1 L/g and R2 =1) exhibits superior adsorption of MB at higher metal ion concentrations when compared to granitic residual soil (Gr) (with Kd=0.0588 L/g and R2 =0.9267). The removal percentage of Gr-nZVI was found to be 100%, obtained at 100 mg/L MB ion concentration. Sorption data have been correlated with both Langmuir and Freundlich adsorption models. However, the Langmuir isotherm was the only model that showed a good fit for the adsorption of MB on Gr-nZVI. The mechanistic phases of the process were determined through kinetic energy studies. Kinetic data showed the removal of MB was 100% within 5 min for both Gr-nZVI and Gr. This indicates the very fast adsorption of MB and data followed a pseudo-second order. According to adsorption analysis, Gr demonstrated a higher adsorption capacity for MB removal compared to Gr-nZVI and nZVI. This study also highlights that nZVI does not facilitate MB adsorption, making the composite nZVI unnecessary due to Gr is capable of removing MB on its own.
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