BVR Engineered Systems - The Value Enterprise

BVR structures are designed to support plant and other equipment comprising components exclusively or principally in borosilicate glass 3.3. Because of the special requirements resulting from the use of this material, structures are now available in the form of a proven modular system that not only meets standard requirements but also provides or facilitates solutions for problems of a very special nature.

Basically these structures consist of steel tubing in three different diameters, which is connected using the appropriate fittings. As a result, the structures cannot only be dismantled and reassembled whenever required but they can also be modified and added to quite easily. The modular system also includes components for establishing fixed points, supporting spherical and cylindrical vessels and horizontal cylindrical components plus a wide range of supports, to mention just the most important items. The result is an extremely flexible system.

Please contact us for further specific requirements.

Design of tubular structures :

The diameter of structure tubing to be used plus minimum dimensions, i.e. width and depth of tubular structures are determined by the nominal size (cylindrical glass components) or diameter (spherical vessels) and the weight of the components they are designed to support.

Support structures must be sufficiently rigid to prevent any bending of the individual tubes in excess of the permissible amount and the subsequent transfer of external stress to the glass components. This is achieved by incorporating additional bracing.

The establishment of fixed points is of particular importance. They are formed by combining a light duty support frame or heavy duty support frame with a coupling, a support plate or a support element (vessel holder, angle bracket, etc.). Fixed points have to carry the entire weight of a unit or column and should therefore, be located at the lowest point (in the case of a vessel holder) or lowest possible point (in the case of a support plate) in the installation.

Please note: Assembly of the glass components must always be started from the fixed point.

Glass units and their structures expand at different rates as a result of change in temperature. The unit must, therefore, be able to expand above the fixed point without restraint.

Guides giving lateral support must always be provided for units and columns.

Guide elements should not be bolted rigidly to the unit or plant during operation.

Where supports are used in a structure for individual components or assemblies, these should be installed in such a way that the glass components are subject in the main to compressive forces. It has to be taken into consideration, that normally an additional fixed point is created at such points.

Please note: Glass components must be able to expand freely from a fixed point, therefore a bellow is generally fitted between two fixed points.

If there is the risk of vibration generated in the vicinity of glass units being transferred to the tubular structure, appropriate preventive measures should be taken.

The structure components described can also be used to support platforms and walkways for the use of plant operators and maintenance staff. They are connected directly to the plant support structure, which results in a particularly compact design. The decking of these platforms and walkways is in the form of grids or embossed metal sheets.

Supporting Horizontal Pipeline :

Both horizontal and vertical pipelines must be supported at certain intervals to avoid subjecting them to additional stress due to bending or lateral movement (e.g. on either side of bellows). For details please contact us.

BASE

BEND

TEE

DOUBLE BEND

DOUBLE TEE

EQUAL BRACKET

UNEQUAL BRACKET

CROSS

SUPPORT

PLUG

STUDS

COLUMN BASE SUPPORT

STRUCTURED TUBE GALVANIZE