LNG Terminal Development
Sempra Energy identified the need for a new LNG terminal near Costa Azul on the Pacific coast of Mexico’s Baja peninsula. The wave conditions at the site included persistently long period swells, presenting a challenge for operating the facility and requiring an engineered solution.
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Costa Azul, Mexico
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The Baird design met the client’s operability requirements and consisted of a large caisson breakwater located in 30 m of water. The design process required a full ocean wave hindcast, wave transformation to the site, breakwater option development and vessel motion and berth availability analysis.
- Wavewatch 3 hindcast of Pacific, including partial blocking from Polynesian Islands
- Nearshore wave transformation using spectral wave models
- Boussinesq wave modeling to examine reflections from shore and wave conditions at the berth
- Use of numerical and physical models to assess vessel motion
- Define the southern ocean swells at the site.
- Define moored ship response to swells.
- Estimate the berth availability.
- Estimate the longest likely berth inoperability timeframe.
- Detailed calibration of hindcast model to directional buoy data with sub-grid blocking for Polynesian Islands.
- Used both numerical and physical models to define wave limits.
- A comprehensive LNG operability model was developed which considers ship motion, tug limits, winds, visibility, etc.
- A long term wave hindcast was developed which highlighted the problems that occur during “El Nino” events.