Broken water pumps continue to impede efforts to deliver clean and economically-viable water to the global poor. The literature has demonstrated that customers' health benefits and willingness to pay for clean water are best realized when clean water infrastructure performs extremely well (>99% uptime). In this paper, we used sensor data from 42 Afridev-brand handpumps observed for 14 months in...

Conversion of water into steam is the primary function of a utility boiler. The steam pressure is used to turn a steam turbine thus, generating electricity. Within the boiler drum there exists a steam/water interface. Boiler steam drum water level is one of the important parameters of power plant that must be measured and controlled. For safe and efficient boiler operation, a constant level of ...

background: sexual dysfunction is one of the most common problems in men after coronary artery bypass graft (cabg). etiology of sexual dysfunction in these patients may be psychological or organic due to hormonal changes. objective: the purpose was to evaluate the incidence and type of sexual dysfunction and changes in serum concentration of sex hormones in male patients undergoing on-pump cabg...

Abstract. The global floating offshore wind energy industry is rapidly maturing, with several technologies having been installed at pilot and demonstration scales. As the progresses to full array-scale deployments, optimization of marine activities related installation, operation maintenance, decommissioning presents a significant opportunity for cost reduction. This paper reviews various opera...

Electrical installation of buildings is an assembly electrical equipment in that are related to each other, meet certain goals or purposes and have coordinated characteristics [2]. The design this covers all aspects the building, one which for Water Engineering laboratory building. power building used room lighting, pumps, heating, cooling so on. Based on above, obtain a water engineering with ...

This paper briefly summarizes that during the depressurization operation in subsea pipeline for maintenance or prevention of hydrate formation, because flare knock-out drum pump is designed ambient temperature, and cannot deal with low temperature fluid process. Therefore, needs to be heated meet requirement pump. In order avoid volume exceeding surge drum, concept multi stage innovatively prop...

The demands on availability and reliability of the control system reflects the stability needed by accelerators in production. On the other hand the system is continuously developed and new features have to be included and adapted. With growing complexity of the system testing for unforeseen side effects becomes increasingly difficult. Frequently control access to pieces of equipment essential ...

Reliability of machines and facilities has played an important role since many years. Nowadays, attention is also paid to maintenance times. Maintenance standstills are to be reduced as far as possible. On the other hand, technical systems are subject to signs of wear and tear which are in general growing slowly and imperceptibly. The gradual abrasion of applied tools may lead to poor productio...

Extensive chlorinated solvent contamination, including trichloroethylene (TCE) dense nonaqueous phase liquid (DNAPL), was found in ground water at a Navy Installation Restoration Program site on a former Navy property in Pennsylvania. Ground water at the site is encountered in the Triassic age Stockton Formation, which consists of gently dipping, alternating sandstone and mudstone units. Ground...

Apart from regular wheel wear such as decreasing wheel diameters and reduced flange thicknesses and heights, wheel flats (WF) and oval wheels (or OOR, Out-Of-Roundness) are the most common wheelset problems for railway vehicles. Within the FP7 Research Project “Saferail”, APT has developed an innovative wheelset monitoring system so-called “Wheel flat and Out of Roundness Monitoring (WORM) syst...