LNG TANKS

TENSA is leader in the design, production and installation of systems and special components critical for the safe and good performance of structures dedicated to special tasks, such as the storage of liquefied nitrogen gas (LNG).

Advantages

TENSA technologies applied in LNG tanks are aimed to:

  • Strengthen and confine the external concrete structure, to increase concrete performance and structure robustness under liquid containment actions (post tensioning): such action may be done under cold temperature status (cryogenic conditions)
  • Protect structures from the seismic action or, in general, from dynamic actions (i.e. wind)
  • Consolidate and strengthen ground beneath the structure (ground anchors)
GROUND ANCHORS

The technology of ground anchoring is widely used especially as far as foundation consolidation and retaining walls are adopted.

At the connection between basement and walls it is possible to use:

BEARINGS

Structures, indeed, undergo displacements, rotations and deformations caused by acting loads (of static, dynamic, thermic nature etc.) or by phenomena such as shrinkage and creep, linked to the maturation of materials.

Movements, rotations and deformations need to be allowed for and contemplated where strictly necessary and in accordance with the designer’s constraining system.

ISOLATORS

Base seismic isolation represents an important tool in the hands of the designers to protect the structural and non-structural components of a construction.

The isolators limit the acceleration transferred to the structure and reduce inertial stress by increasing the oscillation period.

DAMPERS

Dampers are hydraulic devices depending on load application velocity and are able to dissipate part of the dynamic energy entering into the structure.

SHOCK TRANSMITTER DEVICES

STUs are hydraulic devices, able to create, only for impulsive external force, a temporary rigid connection between two parts of the structure.

POST TENSIONING

Concrete walls are usually post tensioned, designing structures as reinforced shells.

Post tensioning plays a key role with vertical or annular (looped shape) tendons, creating a deep net of compression forces to the structure.

Depending on the different design choices for structure thermal insulation, tendons may be required to perform in low temperature conditions (cryogenic), especially in extreme events (failure, accidents).

In such cases tendons need to be suitable to meet International Standards (ETAG013, EN14620-3, FIP SR 88/2) for cryogenic working conditions.

TENSA MTAI system has been positively tested to assess compliance to requirements set in standards above.

POST TENSIONING

Tanks top roof may be post tensioned depending on design choices.

Usually cryogenic conditions are not applied to this part of the structure.

Related products 

TENSA offers a complete range of bearings. Almost 30 years of worldwide experience in the field allows TENSA to provide the most appropriate solution to meet all clients' needs. The internal production facility and laboratory allow to keep full control of quality and of delivery times.

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Thanks to its experienced team of engineers and technicians, TENSA is able to guarantee the highest and worldwide accepted quality standards to every step of the post tensioning process, from the design, to production and on-site installation.

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Almost 50 years of worldwide experience in the field allow TENSA to provide customized solutions to meet all the clients' needs. TENSA’s ground anchors are developed within an overall improvement program including anchors and post-tensioning products.

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Base isolation systems are used to protect constructions and, more importantly, human lives.  25 years’ experience allows TENSA to provide a solution to any design demand, producing innovative tools aimed at reducing the seismic hazard.

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TENSA designs, produces, tests and delivers its velocity dependent devices according to specific clients’ needs. These solutions are designed to reduce the seismic structural response by adding important energy dissipation to the system.

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TENSA’s rigid connection devices are the most suitable solution when a modification on the structure’s response is required. In fact, they can modify the structure’s condition from static to dynamic and distribute the entrance seismic force in different positions.

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Related projects

Country 
Algeria
Year 
2009