This paper presents a model for strategically locating drop-lots on a supply chain distribution network. The problem is modelled as a set covering location problem with the addition of a set of minimum-distance-away constraints. The effect of these constraints on the solution space is dramatic, reducing the problem size significantly. It is also proposed that the use of drop-lots in a supply chain can have beneficial quality of life effects for the truck drivers in such a system by allowing them more home time. A real-life example problem from the Midwest is used to validate the model and some computational experience is also reported.
NEC Classifications and Divisions for Hazardous Locations
Electrical equipment in hazardous (classified) locations present a serious threat for workers due to the existence of explosive dust and vapors. Examples of such facilities range from grain mills and gasoline stations to aircraft hangars and chemical manufacturing plants. To prevent devastating explosions that may occur from the ignition of combustible particles in the atmosphere, the National Electric Code (NEC) published guidelines on the proper classification of hazardous locations. Classes, Divisions and...
Hazardous Location LEDs in Chemical Manufacturing Facilities
Employees inside chemical manufacturing plants are exposed to some of the most unforgiving work conditions in the industrial sector. This is because in such environments, workers are exposed to extreme temperatures, dust, volatile chemicals and invisible, explosive gases. Common protection methods against explosive risks include containment, segregation and prevention. Out of all the options, explosive containment is the only method that allows an explosion to take place, in a confined and safe manner through...
Optimal location of artificial recharge of treated wastewater using fuzzy logic approach
Increasing water demands in light of limited water resources have intensified exploitation and drawdown of groundwater. On the other hand, rising water demand has accelerated wastewater production. Therefore, urban wastewater management via artificial recharge may play a significant role in aquifer management. While site selection for artificial recharge projects is a major challenge, fuzzy logic provides one of the most viable approaches for this purpose. Considering the high volume of wastewater production in...
Case study - Remote location requires minimum concept
A leading power supply provider in Austria took on the project of monitoring water levels at a power plant in Montenegro, in two remote locations where no infrastructure is available for installation. On top of that, site visits could only occur every two months, so a device with remote data transmission capabilities was key.Because of these factors, the customer needed an easy solution for their water level monitoring. Long recording time, easy maintenance and the low effort for maintenance were the main reasons...
Case Study - Groundwater: Locating Water Wells
South Sudan: 4000 L/min water wellDate: February 25, 2015Site: Yeri Mozo Village, South Sudan, AfricaEquipment: SuperStingR8 WiFi, SwitchBox56 and passive cables spaced at 5m.Software: EarthImager2D with a finite element inversion model of dipole-dipole array data.Results: Resistivity imaging successfully located a very high production potable water well with 4000 liter/hour static yield.