Challenge: To analyze the structural integrity of a nuclear fuel transfer cask lid and lid bolts during a hypothetical accidental drop. Special analysis considerations include ensuring the lid remains sealed during and after the event as well as verifying the...

Challenge: The cooling coils for a nuclear power plant need to be replaced. The new design must meet the facility and regulatory requirements for structural adequacy, deflections, frequency, and weight. Resolution: A combination of classical calculations and finite...

Challenge: Fans associated with a turbine room were found to be failing catastrophically after only short periods of operation. Remediations were taken with regard to the intake airflow and the angle of attack of the blades. With these changes in mind, the facility...

Challenge: A new De-Ionized Water Storage Tank and associated equipment, including an emergency diesel generator, are to be installed on a concrete mat and caisson foundation at the RE Ginna Nuclear Plant. Although the tank is designed to be exposed to the...

Challenge: A de-Ionized water storage tank together with an emergency diesel generator are to be built on a foundation next the several buildings. The tank contains 160,000 gallons of useful water plus a five-feet depth water for minimum water head. The tank and...

Challenge: Our client is concerned about the vibration of a nuclear plant component known as a Generator Neutral Enclosure (NE). The NE is a hollow horizontal aluminum cylinder, 58" diameter and 146" long. The NE shell construction consists of several plates bolted...

Challenge: To analyze the structural integrity of a nuclear fuel transfer cask design during hypothetical accident drop conditions that may occur during transport. The design must ensure that the spacing between the nuclear fuel rods is maintained after being dropped...

Challenge: New lightning arresters are required at a power plant. HEA was approached to perform an IEEE seismic qualification evaluation to demonstrate dynamic performance compatibility for as-tested versus as-installed configuration. Resolution: Our engineering team...

The cooling coil for a nuclear power plant requires replacement. HEA was engaged to evaluate a coil design to meet the ASME code requirements for structural adequacy. Resolution: Our engineering team used a combination of hand calculations and finite element model...

Challenge: Two pressure vessels will be installed at a Laboratory in Menlo Park, CA. In accordance with a client provided seismic design criteria, HEA has been tasked with computing the seismic demand loads for all of the systems and components in addition to the...