A developing society needs to adapt to change and foster creativity. In the pursuit of continual improvement (e.g., reducing fossil-fuel consumption and waste, better service performance, greater availability and improved reliability), implementing wise maintenance-schedules is essential for...

AbstractVast financial investments have been made in the upstream crude-oil and natural-gas (CONG) sector in Nigeria, but have not resulted in significant benefits for most Nigerians. The associated major activities, e.g., exploration, drilling, production, well intervention and service...

The rates of energy that moving vehicles dissipate to road surfaces as well as noise emissions and their propensities for pitting (and hence their repair costs per year) all depend upon the structural properties of these surfaces. Thus, to increase the strength of bituminous concrete (i.e. a...

The relationship between changes in the incident rotor-blade angle due to compressor blade profile distortions and the required compressor power is investigated. This was achieved by measuring certain performance characteristics of an operational gas-turbine. Corresponding theoretical...

The production of biogas is of growing interest as fossil-fuel reserves decline. However, there exists a dearth of literature on the design considerations that would lead to process optimization in the development of anaerobic digesters aimed at creating useful commodities from the ever-abundant...

This sheller uses abrasion between a rotating shelling-disc and stationary concave compartments to achieve the stripping. A manually-operated handle is used to rotate two shafts, one of which translates rotational motion to become linear motion of a slider crank. The slider pushes the maize cobs...

In Port Harcourt metropolis, municipal solid-waste (MSW) is generated and collected in large quantities, but some remains as litter in parts of the municipality. Refuse is mostly buried, but some reckless open-burning ensues, so posing environmental hazards. Waste collected from different...

In Nigeria, a major problem is the corrosion of the external surfaces of such pipelines, which are not usually adequately safeguarded during construction. A cathodic protection system should be applied to the pipeline before this period.

Labour costs represent the major portion of the total cost in many industries and activities. This investigation examines a four-day workweek (compared with the current five-day week schedule) for maintenance operations in the Power Holding Company of Nigeria (PHCN). The aim is to reduce...

The ability to improve continually is desirable. In recent years, the reliabilities of power plants have become increasingly important issues in most developed and developing countries. Reliability, availability, maintainability and supportability (RAMS), as well as risk analysis, have become...