A Specialty Structural Engineering

Company for the Oil & Gas Industry

|  CONTACT US

LNG Systems
 

We focus on the advanced special structural engineering required for onshore and offshore LNG facilities.   This includes seismic engineering to NFPA-59A and FERC guidelines, non-linear dynamic ship collisions studies using advanced FEA, structural fire and cryogenic analysis.  We are also involve in assisting code development and regulatory compliance.
 

 

Energo Market Sectors

Fixed

Platforms

Floating

Systems

LNG 

Systems

Onshore

Structures

 

 

Energo Engineering
1300 W. Sam Houston Pkwy, Suite 100
Houston, Texas  77042
Phone:  713-532-2900

  • Seismic Engineering

  • Ship Collisions

  • Cryogenic, Fire and Blast 

 

Seismic Engineering

LNG containment tanks and facility structures require special assessments for earthquake.  This includes design for both OBE (Operating Basis Earthquake) and SSE (Safe Shutdown Earthquake) conditions.  These analysis typically involve response spectra and time history (time domain) analysis including the effects of soil-structure interaction (SSI) and sloshing.  Energo has performed such studies for offshore facilities as well as onshore including steel and concrete tanks.  Codes used include NFPA 59A and ASCE 4-98.

LNG Tank in Earthquake

 

Ship Collisions

The transport of LNG by ship and transfer at offshore fixed or floating terminals is becoming increasingly popular.  Such facilities are typically designed to resist or mitigate the effects of ship collisions.  Energo has performed numerous type of direct ship collisions including the effects of energy dissipation by  the ship hull being collided into, as well as energy dissipation by deformation of the bow if the colliding ship.  Such work is often used to determine the hole size in the LNG vessel that can then be used as input to dispersion studies for risk assessments. See our Download Webpage for examples of ship collision modeling.

 

A sample LNG Collision study can be seen by viewing the animations below.

LNG Collision Animation 1.

case1general.gif (1071kb).

LNG Collision Animation 2.

case1section.gif (1276kb).

 

Hole in LNG

Containment

Cryogenic, Fire and Blast 

The very cold LNG storage temperature has to be evaluated for the containment structure .  This includes cool-down and accidental spill cases.  Likewise, a spill or release can cause structural materials to become brittle and can also cause problems associated with fire or blast if the LNG were to return to gas and ignite.  Energo has experience performing all of these types of analysis and determining the potential effects on the structure.  Such studies are often used to determine the locations for Passive Fire Protection (PFP) or other spill containment prevention.

 

Contact At Energo:

Frank J. Puskar, PE
Email:  contact@energoeng.com
 

● Energo Engineering ● 1300 W. Sam Houston Pkwy, Suite 100 ● Houston, TX 77042 USA ●

Tel: 713-532-2900 ● Fax: 713-532-2922

© Copyright 2009