Into the Fourth Dimension
A team of contractors designed a pharmaceutical plant entirely in 3-D CAD, then linked the renderings to a cost program and scheduling software, adding a fourth dimension—time—to the process....

Gradually Varied Granular Flows in a Vertical Chute

Relationship Between Turbulent Structure Near the Free-Surface and Surface-Wave-Fluctuations

An Electrorheological Damper with Annular Duct

Evaluation of Concrete Bridges by Impact-Echo
Strength of post-tensioned bridge structural members primarily depends on the tensile capacity of their post-tensioning steel reinforcement. To prevent corrosion, the post-tensioning steel...

Progress of Floating Type Wave Power Generator
A floating type wave power generator was improved. It is a Backward Bent Duct Buoy (BBDB) which has an air chamber duct which is bent backwards. It is capable of increasing the peak conversion...

Verification of NESSUS Code on Space Propulsion Components
Application of probabilistic finite element method to the structural analysis of typical space propulsion components such as turbine blades and high pressure ducts is reported. The study...

Power Without Acid
Anticipating tighter acid rain controls, DOE is developing duct injection units that can be attached to existing powerplants. In a typical duct injection system, lime is sprayed into existing...

Air Demand of High Head Sluice Gates: Model-Prototype Comparison

Effects of Seismic Interaction Between Components in a Nuclear Power Plant

Treating Potential Impact of Components in NPP

Experiences in Pneumatic Wave Energy Conversion in Japan
Several prototype and model studies of pneumatic wave energy conversion systems are discussed. These include those of the floating platform KAIMEI, the fixed system at Sanze and the new...

Microtunneling: No Pipe Dream
Microtunneling machines developed in Japan and Germany can help install pipes, ducts and cables without disrupting urban activities at street level. A microtunnel is defined as having...

A Method of Low Turbulence Linear Shear Flow Production

Evaluation of the Ultimate Pressure Capacity of Rectangular HVAC Ducts for Nuclear Power Plants
Structural design criteria are presently based on the AISI Code which limits the duct panel width-to-thickness ratio to a maximum of 500 and the maximum height-to-thickness ratio to 200,...

Design Verification of HVAC Duct Turning Vanes in Nuclear Power Plants
HVAC ducts in nuclear power plants utilize short radius elbow construction with turning vanes to minimize the space requirement for duct work and to reduce flow losses in the elbows. Turning...

Structural Engineering in Nuclear Facilities
The papers in this publication cover the general theme of civil and structural engineering as they are applied to nuclear facilities. Traditional topics include seismic analysis, impactive...

A Procedure for Seismically Qualifying HVAC Ducts used in Nuclear Power Plants

Structural Testing of Seismic Category I HVAC Duct Specimens

Bending Stresses in Dust Filled Cylinders
This note presents the derivation of a simple approximate formula for the axial bending stresses in circular ducts, in general. The results are applicable to ring stiffened and unstiffened...

 

 

 

 

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