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Zeeco Flare Structure

Structures

Guyed

Guy-supported (guyed) type stacks are one type of support system for an elevated flare. The elevated flare tip is mounted on top of a riser supported through a system of cables (guy-wires), typically arranged with a set of three (3) cables at 120 degree angles. Guyed flares require multiple deadman foundation anchors to anchor the cables to the ground, and therefore this support system necessitates a larger plot space than other support systems. The design of guy-supported flares requires special attention to process temperature conditions in conjunction with multiple levels of guy-wires.

Guyed Derrick

Guyed derrick type stacks are one type of support system for an elevated flare. The elevated flare tip is mounted on top of a riser supported by both a steel trussed derrick structure and through a system of cables (guy-wires), typically arranged with a set of three (3) cables at 120 degree angles. Similar to a guyed flare, a guy derrick flare requires multiple deadman foundation anchors to anchor the cables to the ground, and therefore this support system necessitates a larger plot space than other support systems. It also requires a smaller, more economical derrick structure compared to a conventional type of derrick supported flare. Guyed derrick flares eliminate concerns associated with process temperature designs.

Derrick

Derrick type stacks are one type of support system for an elevated flare. The elevated flare tip is mounted on top of a riser supported by a steel trussed (derrick) structure. Derrick supported flares require three or four additional foundations for the derrick legs, but this is a relatively smaller plot space when compared to a guyed flare of the same height. Derrick flares eliminate process temperature design concerns. Additionally, a single common derrick structure can support multiple flare risers.

Demountable Derrick

Demountable derrick type stacks are one type of support system for an elevated flare. The elevated flare tip is mounted on top of a riser supported by a steel trussed (derrick) structure. Similar to a conventional derrick supported flare system, demountable derricks require three or four additional foundations for the derrick legs. Due to the economic impact of shutting a flare down and the requirement for large cranes, users welcome a means to be able to lower the flare tip to grade for maintenance, inspection, or repair activities without ever having to shut the flare down. A demountable derrick allows a user the ability to lower the flare tip and pilots to grade through the use of a winch system (typically three different winches), guide rails, tilting tables, and flanged riser sections. Demountable derricks eliminate concerns associated with process temperature designs. Additionally, a single common demountable derrick structure can support multiple flare risers.

Self-Supported

Self supported type stacks are one type of support system for an elevated flare. The elevated flare tip is mounted on top of a free-standing riser consisting typically of multiple diameter cylinder sections. Self supported flares require only one foundation and therefore a relatively small plot space. Riser is maintenance free, and no concerns for process temperature conditions are required. Self supported stacks can be designed to lift in multiple sections or as a single piece (fully dressed with ladders, platforms and utility piping). This type of support system is generally limited in height due to the base diameter section (whether by shipping constraints or economic feasibility of fabricating at the jobsite).