Welcome to the Pressure Vessel Engineering gallery. Below is a colletion of previous projects we have completed from small R&D projects to large petrochemical and nuclear applications. While we specialize in pressure equipment we have expanded our knowledge and capabilities over the years which has enabled us to complete a wide variety of projects.
Pressure Vessel Engineering was contacted to help re-certify a series of 17ft Diameter 56ft tall digesters for Tembec Inc. which are currently in use for the pulp and paper industry. These digesters are filled with wood chips and mixed with acid in order to convert the wood chips to paper pulp.
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Pressure Vessel Engineering was hired to prepare calculations for both pressure containment and supports for wind and seismic loads on a series of large propane storage spheres for Conrex. The vessel wall thickness and nozzle supports were calculated using standard ASME code calculations. The vessels supports were constructed using industry standard designs but Finite Element Analysis (FEA) was used for the analysis instead of existing design rules.
The Problem:A rectangular settling tank required a sloping bottom. The application allowed the use of tie rods between the long sides, but not the two ends. Side and top supports were required, but how to account for the interaction between the tie rods and the supports?
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The Problem:A 250 foot wide, 85 foot high, 90,000 lb capacity freight handling crane had cracks in its main structural girder under both the main and balancing wheels along most of its length. Repair welding was tried but the crane was re-cracking in the same locations after short periods of use.
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The Problem:The process in this vessel required a reverse dished head. The reverse dished head could not be fabricated thick enough to meet the ASME VIII-1 rules. The chosen solution was to reinforce the head with ribs to prevent snap through.
Various alternate methods of analysis are shown here. Only the plate analysis was used for the actual job. However, the comparison of the various methods is educational.
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