Eco Electrica, an electical generation company
located outside of Ponce, Puerto Rico, planned
to switch from a propane gas energy source
to Liquefied Natural Gas (LNG). An important
feature in their plan included the construction
of the LNG storage tanks. Pitt-Des Moines
(PDM), a leading expert in the design of tank
systems in use throughout the world, was
contracted with Aireko Construction to build
what would be the world’s largest LNG tanks.
Although the tank itself is metal, 2' thick posttensioned
concrete walls enclose the tanks to
protect against leakage.
Despite delays caused by threatening weather,
the contractor finished the enclosure on time
and within the budget. They reported that the
average 8 day pour cycle was extraordinary for
a structure of this size.