Determining the Ultimate Capacity of an Outlet Collector
The ultimate capacity of an existing outlet collector needed to be determined. HEA generated a finite element model of the outlet collector and a differential pressure load was applied. Our analysis considered material plasticity to find the ultimate collapse load. An...
Modifications to Reduce Thermal Stresses
Multiple cracking and leak failures have occurred in tubing located within an oil refinery economizer. Metallurgical examination of the failed tubes indicates that corrosion fatigue is the most likely failure mechanism. HEA performed a finite element analysis and...
3D Model to Visualize Fluid Flow
A J-tube previously used as a firewater source, located in a leg of an oil platform, was found to be plugged. A systems upgrade to the fire protection system requires a functional fire water pump at the leg. Flooding of the leg was under consideration as a solution....
Dynamic Analysis and Refurbishment of Coke Drum Structures
New coke drums, which are larger than the existing ones, were to be installed. The table top support structure was also experiencing spalling of concrete on the underside as illustrated in the picture. HEA performed a dynamic analysis of the structure and drums and...
1000 Year Earthquake Analysis
A rig in the Cook Inlet fleet was to be requalified for service by analysis for a 1000 year return period quake. HEA developed a finite element model to represent the platform, which accounted for the complex interaction between the drill pipe setback and the drilling...
Coke Drum Deheading Valve Structural Support
A 70-ton valve used to automatically open the bottom head of a coke drum had to be supported from the existing concrete pedestal. HEA designed a support system capable of accommodating vessel thermal motions, seismic loads and maintenance activities, while remaining...
Permanent Rigging Point Rating/Design
This hotel ballroom was upgraded with permanent rigging points on the ceiling. HEA rated the rigging points based on the roof structural capacity and provided criteria for loading adjacent rigging points. HEA also selected suitable rigging components and recommended...
Temporary Rigging Load Chart
This analysis was done to develop a load chart of allowable temporary rigging loads for the different components of the radial roof structure at the Los Angeles Forum. HEA assembled a computer model to represent the complex roof structure and applied dead and live...
Fall Protection Design
This facility has a rack assembly, over 30' in height, with a trolley system, running along the entire length of the rack. To maintain employee safety, a fall protection system was required, running parallel to the trolley track. One requirement was that there would...
Temporary Structure and Rigging Design
An overhead camera view was needed to shoot a motorcycle chase scene. HEA designed the temporary support structure and evaluated the associated rigging in accordance with the pertinent criteria. The final structure stood 80' tall and provided a longitudinal camera run...