Many thousands of tonnes of asbestos were used in buildings in the past, especially for thermal insulation of pipes and boilers in power plants. Occupational exposure to asbestos dust now mainly occurs during demolition, renovation and routine maintenance activities. The objective of this study was to evaluate occupational exposure to airborne asbestos during renovation of solid oil-shale fuell...

In November 1988, a physician in west Texas reported three cases of silicosis in sandblasters to the Ector County Health Department (ECHD). One of the workers, a 34-year-old man, subsequently died with acute silicotic alveolar proteinosis. All three workers had been employed at a facility that sandblasted oil-field drilling pipes. Following the physician's report, in January 1989, the ECHD and ...

“VKO “Simvol” designs and produces marking equipment, reading equipment traceability software. Fluorescent dot-peen (FDMP) is an improved version of dot peen (DPM) technology. In FDPM technology information dots are filled with special material – fluorescent composition. Various compositions provide high stability in different aggressive media, such as moisture, salt acid solutions, oils, lubri...

The essential oil extracted from the soft coral of Sinularia sp. have been extracted by soxhlet and analyzed by gas chromatography coupled to mass spectrometry (GC–MS). The principal compounds were found to be δ-Cadinene (12.4%), α-terpinene (10.7%) and α-Muurolene (8.3%). It is worth mentioning the presence of sesquiterpenes and diterpenes as main compounds of the essential oil. This is the fi...

Deep-water flexible composite pipes have been widely employed in the domain of deep-water oil and gas transportation, high-density polyethylene (HDPE) is used to seal inner sheath internal media containing H2S CH4, due its favorable barrier properties mechanical properties. The morphological evolution HDPE during extrusion process exerts a direct impact on material’s grand canonical Monte Carlo...

In petrochemical, marine, and other fields, high-concentration solid-liquid two-phase flow induced pipe vibration has always been a problem worthy of attention. Especially when the oil transports flow, researchers have introduced equivalent density into fluid momentum equation to consider influence on pipes with vibrations. This method ignores particle collision accumulation in vibration, which...