Tank-top gas holders: installation layouts

White membrane roofs on different tanks illustrate tank-top installation layouts and the relationship between tank structures, perimeter platforms and site access.

These photographs are grouped by equipment and manufacturing topic, not presented as a separately verified project with an identified location, client or capacity.

Share the gas or stored material, required capacity and installation conditions to discuss a suitable configuration.

Combining a tank and membrane roof

A tank-top double-membrane holder places the gas-storage space above the tank. Its design must address both the storage system and the roof-to-tank connection. These examples illustrate how membrane roofs relate to different tank structures and surrounding access space.

The outer membrane forms the enclosure, the inner membrane provides the variable gas-storage boundary, and support air maintains the outer shape. These photographs show the roof profiles and perimeter access; they do not establish the internal arrangement, operating pressure or usable storage volume.

Tank-top interfaces and maintenance

Review the tank geometry, top support conditions, perimeter fixings and seals, and load-transfer path before selecting the roof. For a retrofit, structural records and a site inspection are needed to assess whether the proposed membrane connection suits the existing tank.

Maintenance planning should provide roof access and space for membrane inspection and replacement, coordinated with gas connections, support-air piping and instruments. Tank-top drawings and operating conditions help define the installation scope and maintenance interfaces when requesting a proposal.