PRESSURE VESSEL, ENGINEERING & FABRICATION
ASME Reactor Vessel
Client
ENERKEM
Industry
Energy
Equipment
ASME Reactor Vessel
Materials
Steel
Our Service
Engineering & Fabrication
01
OVERVIEW
260,000 lbs Reactor Pressure Vessel
The client designed a vertical Reactor Pressure Vessel for use in their Alberta facility using ASME standards, with parameters 6’-8” ID x 40’-0” long, 1200 psi, 600F. It is a critical part of their process and a first for their engineering team. A removable tube bundle (350 tubes of 1” sch.160 x 25’-0” long) is contained in the vessel and a pair of girth body flanges are needed for this accessibility.
This high level of pressure requires a 3” thick carbon steel shell with SS316L 3/16’’ internal cladding, 3.5” thick dished heads, 18” thick girth flanges, yielding an overall vessel weight of 260,000 lbs. Due to the size and complexity of this vessel, there is a high level of uncertainty because only about 70% of the mechanical design had been done. They required the services of a pressure vessel fabrication company to finalize the remaining 30% mechanical design work and complete all the manufacturing.
Client
ENERKEM
Industry
Energy
Equipment
ASME Reactor Vessel
Materials
Steel
Our Service
Engineering & Fabrication
02
APPROACH
Optimized mechanical design
DIMARTECH took over the responsibility of the remaining design tasks and provided the CLIENT with several proposals gradually over the course of the contract. Both teams jointly collaborated in optimizing the mechanical design. The 36,000 lbs internal tube bundle was designed with jigs and support frames for stability during welding. The non-standard 6’-8’’ diameter girth flanges were designed as welding neck flanges, fully welded, PWHT, and machined for Flexitallic metal core gaskets. All internal surfaces were weld overlayed with SS316L filler metal where needed.
03
DELIVERY
Delivery of Design-Build
The client benefitted from time savings by allocating their engineering team to other tasks with minimal supervision of the entire manufacturing process. The successful completion and delivery of this design-build (design + manufacturing) contract provided the CLIENT with an important milestone in their overall plant start-up and has contributed to their growing achievements.
During the final stages of manufacturing, DIMARTECH’s team also assisted the CLIENT to successfully complete their project with the joint review and approval of start-up and commissioning procedures, bolt torqueing of non-standard flanges, lifting and rigging analysis, loading and delivery drawings.
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Pre-Fabrication Analysis Plan
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