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  • Introduction to inspection services
    Inspection services can range from structural building surveys to on-site testing for specific parameters such as condensation. Buildings or civil structures such as foundations, culverts, tanks and pipes can be tested for maintenance or safety compliance. Surveyors may simply carry out a visual inspection or use special measuring equipment to...
    Guidance, 07 December 2012
  • Introduction to industrial oil / water separators
    Industrial oil / water separators are used for handling effluent from oil refining, chemical processing, metal finishing, food processing and rendering applications. Specific technologies include corrugated and tilted plate separators. These are enhanced gravity systems in which oily effluent passes through a set of plates that increase the...
    Guidance, 07 December 2012
  • Introduction to steel storage tanks
    Metal storage tanks are corrosion resistant, making them suitable for the containment of potable and non-potable water; sludge, slurry and sewage; hazardous chemicals; and industrial effluents. Materials include stainless steel, galvanised steel, carbon steel, epoxy coated steel and glass fused to steel. Alternatively, GRP and thermoplastic tanks...
    Guidance, 10 December 2012
  • Introduction to gas dosing systems
    Gas feed systems are used to treat water and wastewater in municipal and industrial processes. The safest systems tend to operate on all-vacuum principles. Chlorinators disperse chlorine into water and wastewater in a reliable manner. Applications include disinfection, sterilisation, odour control, bacteria control, algae control and colour...
    Guidance, 10 December 2012
  • Introduction to biological treatment
    Biological treatment systems are commonly used to treat municipal wastewater and sewage, as well as sludge and industrial effluents. Biological systems use bacteria, in either aerobic or anaerobic conditions, to break down organic matter into carbon dioxide and cellular mass. Packaged treatment plant are typically suitable for population...
    Guidance, 06 February 2015
  • Introduction to water / wastewater / effluent pumps
    Water, wastewater and effluent pumps are used in sewage treatment, municipal water treatment and heavy industrial applications to move liquids from one stage of a process to another. Wastewater and sewage pumps are designed to move abrasive and aggressive liquids where solids may be present. They are often designed to be submersible. Sludge and...
    Guidance, 10 December 2012
  • Introduction to mixers
    Mixers are used to mix, blend, homogenise, agitate and aerate both liquids and solids in a range of sectors, from wastewater treatment through to food processing. Dynamic liquid mixers use propellers to provide local turbulence and drive bulk flow within a tank or lagoon. Slow speed versions are best suited to low viscosity fluids; higher speed...
    Guidance, 07 December 2012
  • Introduction to sanitary / hygienic pumps
    Sanitary or hygienic pumps are used for handling sterile and ultrapure materials in the food processing, dairy, pharmaceutical, cosmetics, biotechnical and medical industries. Air operated double diaphragm, centrifugal, liquid ring, progressing cavity and rotary lobe pumps are all available to meet sanitary criteria. They are typically made from...
    Guidance, 10 December 2012
  • Introduction to industrial valves
    Industrial valves are used to control, direct or regulate the flow of certain types of media: liquids, gases, steam, air, slurries and granular solids. They work by opening, closing or partially obstructing the passages through which these media flow. Automatic valves react to pre-set parameters, such as changes in pressure, temperature or flow...
    Guidance, 10 December 2012
  • Introduction to penstocks
    Penstocks are used for controlling the flow of large volumes of water in wastewater treatment, sewage, irrigation, hydraulic works and hydro-electric power applications. Penstocks are typically mounted in a wall, a channel or a weir. Rectangular and square penstocks are common, although circular penstocks are also available. They are usually...
    Guidance, 07 December 2012
  • Introduction to GRP and thermoplastic storage tanks
    Different types of plastic tank are available to store a whole range of materials, from hazardous chemicals and industrial effluents to food, drink and potable water. Tank capacities can range from 200 to 200,000 litres depending on the material used and the construction method. Glass reinforced plastic is a plastic resin with fine glass fibres...
    Guidance, 10 December 2012
  • Introduction to reverse osmosis
    Reverse osmosis plant produces high-purity water for potable supplies or low-conductivity process water for industrial systems. A type of membrane filtration water treatment or pre-treatment technology, RO is used for the removal of dissolved solids and monovalent components such as chloride, and the separation of dissolved organic and inorganic...
    Guidance, 10 December 2012
  • Introduction to chemical dosing systems
    Chemical dosing systems typically comprise a chemical storage tank, pipework, controls and a frame or cabinet, as well as one or more metering pumps. They can dose liquids, powders or polymers. One common application is the addition of additives, dyes, colourings or flavourings in food processing, cosmetics or pharmaceutical applications. Another...
    Guidance, 07 December 2012
  • Introduction to air / gas purification
    Indoor air quality (IAQ) can be compromised by micro-organisms, dust, fumes, smoke, gases, such as CO2, and volatile organic compounds (VOCs), as well as other airborne particles. Such polluted conditions may be immediately harmful to health or cause longer term problems, including increased absenteeism, a lack of concentration amongst employees...
    Guidance, 06 December 2012
  • Introduction to actuators
    Actuators provide modulating, on/off or positioning control and automation of valves. They are used in industrial processes, water and effluent treatment, and heating, ventilation and air conditioning systems. They are specified with linear or 90 degree / quarter-turn movement depending on the valve type actuated, and with the torque and operating...
    Guidance, 06 December 2012