Case Studies: Design Substantiation |
Design substantiation of an Autoclave Frame
DC White FEA Redesign: Autoclave Frame DC White was approached by a leading Autoclave manufacturer to substantiate a frame, shown in Figure 1, which was being re purposed for a new application with a slight change in the design and an increased contents weight. The original design had already been substantiated by DC White CE a few years earlier, so the original model was resurrected and updated to [...]
Seismic assessment in research facility
FEA & Design Improvement Case Study We were asked by our client to perform a seismic assessment of a door for a biological laboratory in New Zealand. The primary purpose of the door was to act as an airtight seal between the 'clean-room' environment and the rest of the research facility. Because of the likelihood of earthquakes in such a seismically active part of the world, it [...]
Design substantiation of a wheat starch filter
Design Substantiation Report For Dustech Design Substantiation for Dustech, a global leader in environmentally friendly dust control and a long-standing client of DC White, approached us for a substantiation of their C1558B Wheat Starch Bag Filter. The work was done at design stage, to ensure any issues would be addressed before expensive tooling or manufacturing had occurred. Using their drawings and 3D model as reference, we [...]
Substantiation of Piping Package
The Challenge: DC White were commissioned to substantiate a piping package to several codes, ASME B31.3 for the pipework and API 610 for the nozzle loads. A previous report found that the loads acting on the pump suction and discharge nozzles were failing to meet the requirements of API 610. The recommended modifications were to place the pump on a sliding baseplate and include an additional support [...]
Design analysis of a rail trolley frame
Substantiation of an existing design against new requirements for a manufacturer of rail track equipment THE CHALLENGE—Our client had an existing product which was being sold to a new market and had to meet a new set of requirements laid out in RIS-1530-PLT (a rail industry standard). The trolley's frame is subject to high acceleration and cornering loads which were used to perform a fatigue analysis. The [...]
Bespoke Modelling on a Re-boiler – Chemical Plant
Thermal analysis – bespoke modelling This case study describes an analysis performed earlier this year on a Heavy-End re-boiler, which was identified with a potential thermal transient problem. The heat exchanger is normally used for heating a flow of hazardous liquor with a pressurised steam flow. The vessel is a horizontal cylinder with 2 dished ends which create end plenums, capped by 2 tube-sheets 9m apart. [...]
Sonar Float Oceanic Flow Calculation – Sub Sea Navigation
The brief: Our clients are world leaders in subsea navigation, positioning and communications. They are developing a new design of communications float to minimise drag and oscillation noise. The float is used for acoustic navigation and positioning, and can be used to identify submerged equipment. DC White Engineering Consultants were asked to investigate the drag characteristics of the new design over a range of uniform flows. [...]
St. Pancras Station Analysis of Sprinkler System for Tyco Wormald
Life would be a lot easier for designers and engineers if we could remove, eliminate or demolish what exists already. The ability of a good designer or engineer is to produce designs that work with and compliment an existing design, not bulldoze the merits of our engineering heritage. DC White thrives on these challenges - such as this one, presented to us by Tyco Wormald. Historic Project: [...]
Superheater – Boiler Penetrations
Seismic Integrity Assessment Case Study DC White were tasked to assess the seismic integrity of the Hunterston B & Hinkley Point B boilers, in particular the superheater steam pipes and their penetrations into the reactor pressure boundary. These were seen to be potentially vulnerable to earthquake motions with the possibility that the boilers could topple and release steam into the reactor. The seismic response is dominated by [...]
Aerospace Design Substantiation
Independent Design Substantiation For Weston Aerospace DC White were recently involved in the independent design substantiation of various system monitoring components of the new generation of Trent engines for Weston Aerospace (www.esterline.com) Independent Design Substantiation For Weston Aerospace DC White were recently involved in the independent design substantiation of various system monitoring components of the new generation [...]
Chipboard Manufacturer – Design Substantiation
"Fill it with sand & upgrade the profiler motor power." A world leader in wood panel products (from MDF to OSB board and chipboard), called in DC White in to carry out an analysis of all the silos and filters at their plant. The need for the analyses arose as a result of the company using more recycled wood in the production of their products. Although this was [...]
SPP Pumps – Vibration Analysis
Vibration Analysis For SPP Industrial Water Pumps SPP Pumps produce industrial water pumps for use all over the world. Systems may use diesel engines or electric motors, and can be long vertical turbine "water-lift" pumps or conventional horizontal centrifugal pumps. We provide lateral or torsional critical speed analysis to mitigate pump vibration along with substantiation for structural steel-work such as base-plates and enclosures. We have experience meeting the [...]
Analysis of Large Filter – Plant Infrastructure
Industrial Air Pollution Control Equipment: Engineering Consultation Clients will often design at the component level then come to us for a final detailed check on the full section of plant. We would provide an exhaustive system-level view which identifies any weaknesses, and provides an impartial validation of the final product. Industrial Air Pollution Control Equipment: Engineering Consultation Clients will often design at [...]
Seismic Test – Tobacco Drying
Seismic Substantiation Service Case Study DC White had successfully carried out numerous seismic substantiations. A tobacco dryer support structure we had designed and substantiated suffered an 8.8 magnitude earthquake in Chile, just two months after it had been constructed. For about three minutes the 3 storey industrial dryer structure was subjected to the fifth strongest earthquake seen on records. The tobacco drier survived both the initial earthquake [...]
