نتایج جستجو برای: gas transmission pipelines welders
تعداد نتایج: 495634 فیلتر نتایج به سال:
BACKGROUND The purpose of this study was to determine the prevalence and pattern of ocular injuries among industrial welders and rate the use of protective eyewear at work among industrial welders in Port Harcourt. Information from this study will provide a database for effective policy formation on prevention of occupational eye injuries in Port Harcourt Rivers State. METHODS A cross-section...
Arc welding produces the full spectrum of ultraviolet radiation (UVR). It is possible that welders are at greater risk of developing skin cancer than the general population, but there is a dearth of well designed studies in this area. The only major study of the relationship between arc welding and skin cancer risk did not reveal an increased incidence of skin cancer in welders. As the welders ...
Manual material handling (MMH) is unavoidable because of the nature of jobs or tasks as and man-machine interfaces in a construction worksystem. Data were collected from six strata of workers viz., masons, mason helpers, carpenters, welders, gas cutters and ground-level helpers (259 out of 700 workers) from a construction site of a steel plant located in India to analyze different types of occu...
Oil and Gas offshore pipelines, often pass through large geographical areas, from the supply point to the end-user, crossing seismic-active areas. For unburied pipelines, both seismic ground wave and permanent ground deformation can cause severe damage to pipelines, depending on the pipeline geometry and connected structures. Due to the largely non-linear nature of the problem, a finite element...
using natural gas as a clean, plentiful and inexpensive source of energy in recent years has progressively increased in iran. pipelines are the most common system to transport natural gas from field to different regions of iran. these pipelines always pose risks to surrounding population and environments. the aim of this study was to assess the potential health, safety, and environment risk of ...
BACKGROUND Welding is among the most important frequently used processes in the industry with a wide range of applications from the food industry to aerospace and from precision tools to shipbuilding. The aim of this study was to assess the level of steel industry welders' exposure to ultraviolet (UV) radiation and to investigate the health impacts of these exposures. METHODS In this case-con...
OBJECTIVES The purpose was to study the effects on the nervous system in welders exposed to aluminium and manganese. METHODS The investigation included questionnaires on symptoms, psychological methods (simple reaction time, finger tapping speed and endurance, digit span, vocabulary, tracking, symbol digit, cylinders, olfactory threshold, Luria-Nebraska motor scale), neurophysiological method...
The problem to ensure the safety of objects which are in area blasting operations, ensuring destruction hard rocks, remains relevant. article presents results a large-scale experiment determine safe conditions for conducting drilling and operations near active gas pipeline. simplest most reliable way protected object from seismic impact is reduce intensity wave, achieved by changing parameters ...
Rapidly growing natural gas demand in China has formed a precondition to investigate the potential of several pipelines from Russia and other CIS countries, which could possibly head their flows to the Chinese natural gas market. The variety of proposed projects and the difference in their characteristics results in competition and, therefore, in order to assess the projects’ economic perspecti...
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