The consequences of environmental heat stress include a reduction in safety due to impaired concentration, a decreased work capacity, and heat illness. Maintaining adequate hydration is the single most important strategy to counteract the effects of thermal stress. In this study, the hydration status of groups of outdoor workers at mine sites and related facilities was assessed. Urine specific gravity was used as an indication of hydration levels. Fluid intake was monitored and fluid balance studies were carried out to assess the rate of sweat loss. The majority of workers were found to be inadequately hydrated. Most were hypohydrated at the commencement of the shift, and fluid intakes were, in general, well below those required to replace fluid losses — let alone improve hydration. Recommendations are given for maintaining adequate hydration of workers in hot conditions.
Healthy Habits - Improving Wellbeing on a Work Schedule
As we firmly embrace 2017 crashing into these strange new numbers head on, many of us will be facing the harsh reality of our New Year resolutions; perhaps – just perhaps – in many cases feeling like we’ve promised just a little more than we can deliver. Taking an educated guess, it’s safe to assume many people’s plans will consist of some effort to get back into shape, working off Christmas pudding, chocolates, alcohol or whatever seasonal vice you happen to favour. “Never...
What Is a Cooling Tower Water Treatment System and How Does It Work?
For industrial companies using a cooling tower for its facility, some type of cooling tower water treatment system is usually necessary to ensure an efficient process and long equipment service life. If cooling tower water is left untreated, organic growth, fouling, scaling, and corrosion can reduce plant productivity, cause plant downtime, and require costly equipment replacements down the road. But what is a cooling tower water treatment system and how does it work? This article breaks down the basics below: Wh...
What Is a Boiler Feed Water Treatment System and How Does It Work?
For industrial companies using a boiler for its facility, some type of boiler feed water treatment system is usually necessary to ensure an efficient process and quality steam generation. The most appropriate boiler feed water treatment system will help the facility avoid costly plant downtime, expensive maintenance fees, and boiler failure as a result of scaling, corrosion, and fouling of the boiler and downstream equipment. But what is a boiler feed water treatment system and how does it work? The complex...
Distribution and extraction of chromium from phosphate ore
Phosphate rocks are a vital and non-renewable resource which is crucial for agricultural uses. However, this raw material contains various contaminants such as Pb, Cr, Cu, Ni and Zn. Among these elements, chromium is considered as an essential micronutrient at low intake levels. Its occurrence in industrial products at higher concentration can cause a potential risk to plants, animals and human health. The objective of this work was to select a chemical reagent capable of efficiently extracting chromium from...
Discharge Measurement in a Short Intake with a Converging Section – a Case Study
In the context of a planned retrofit and upgrade of the hydropower plant Wettingen, operated by the Elektrizitätswerke Zürich, three intakes were equipped with acoustic transit time flow measuring devices. Since the flow meters are installed in a converging section, downstream of a pier, it became necessary to perform numerical flow simulations in order to weight the acoustic path velocities for a quantitative flow rate evaluation. With the flow rate available and performing additional site measurements,...