A system for providing a modular barrier in a covered or enclosed storage tank is provided that reduces the amount of vapors released from liquid hydrocarbons and other liquids. The modular barrier is, in some embodiments, comprised a plurality of objects operable to form a barrier over a surface of stored liquid contained in the storage tank. The plurality of objects, when inserted into the storage tank, covers the surface of the stored liquid and conforms to a shape of the tank.

A system for providing a modular barrier in a covered or enclosed storage tank is provided that reduces the amount of vapors released from liquid hydrocarbons and other liquids. The modular barrier is, in some embodiments, comprised a plurality of objects operable to form a barrier over a surface of stored liquid contained in the storage tank. The plurality of objects, when inserted into the storage tank, covers the surface of the stored liquid and conforms to a shape of the tank.

The invention relates to a biofilm based panel that is developed for reducing evaporation in dam reservoirs, and allows biomass production. The biofilm based panel of the invention comprises in general three main layers, a support layer (4), a nutrient layer (2) and a biofilm layer (1). Based on the climate in which the dams are located, a heat storage intermediate layer (3) may also be added. The support layer (4) is the top layer. The developed panel is positioned such that it partially covers the water surface.

The invention relates to a biofilm based panel that is developed for reducing evaporation in dam reservoirs, and allows biomass production. The biofilm based panel of the invention comprises in general three main layers, a support layer (4), a nutrient layer (2) and a biofilm layer (1). Based on the climate in which the dams are located, a heat storage intermediate layer (3) may also be added. The support layer (4) is the top layer. The developed panel is positioned such that it partially covers the water surface.

A floating roof leveling and protection apparatus comprising a plurality of isolators having bases being formed of a protective material to prevent an internal metallic internal roof support leg from directly contacting a tank bottom, a body extending axially and centered therefrom, a tapered end for insertion into the roof support leg, a fluid passage, an engagement means engaging the inner perimeter of the roof support leg, and a drain and isolator spacers, whereby a user may place an isolator spacer on the isolator and insert isolators into the roof support legs of a floating roof system to adjust the height of the roof support legs to level the floating roof thereby reducing the stress placed on the floating roof as the fluid level lowers, thus preventing damage to the bottom of a tank when the fluid level is decreased and the roof support legs contact the tank's bottom.

A floating roof leveling and protection apparatus comprising a plurality of isolators having bases being formed of a protective material to prevent an internal metallic internal roof support leg from directly contacting a tank bottom, a body extending axially and centered therefrom, a tapered end for insertion into the roof support leg, a fluid passage, an engagement means engaging the inner perimeter of the roof support leg, and a drain and isolator spacers, whereby a user may place an isolator spacer on the isolator and insert isolators into the roof support legs of a floating roof system to adjust the height of the roof support legs to level the floating roof thereby reducing the stress placed on the floating roof as the fluid level lowers, thus preventing damage to the bottom of a tank when the fluid level is decreased and the roof support legs contact the tank's bottom.

An adjustable deck positioner includes a vertical member having means for attaching to a deck rim and having a pivot arm bracket; a pivot arm assembly having a pivot arm attached to the pivot arm bracket, wherein the pivot arm may pivot between a substantially vertical position within the pivot arm bracket and an extended position angled away from the vertical member; and a lock pin installed across the pivot arm bracket, for constraining movement of the pivot arm towards the vertical member, thereby setting the angle at which the pivot arm extends from the vertical member.

An adjustable deck positioner includes a vertical member having means for attaching to a deck rim and having a pivot arm bracket; a pivot arm assembly having a pivot arm attached to the pivot arm bracket, wherein the pivot arm may pivot between a substantially vertical position within the pivot arm bracket and an extended position angled away from the vertical member; and a lock pin installed across the pivot arm bracket, for constraining movement of the pivot arm towards the vertical member, thereby setting the angle at which the pivot arm extends from the vertical member.

A floating device to be used in groups to form a floating cover that floats over volumes of water or liquids used in industry, mining and agriculture, directed to reduce evaporation, algae formation and gas emanation. The device comprising an outer shell consisting of outwardly convex covers and lateral edges that have a polygonal shape in a plan view, vertical wall surfaces extending from the edges of the covers, wherein each vertical wall surface joins at the level of the middle plane of the device with the edges of an inner shell.

A floating roof leveling and protection apparatus comprising a plurality of isolators having bases being formed of a protective material to prevent an internal metallic internal roof support leg from directly contacting a tank bottom, a body extending axially and centered therefrom, a tapered end for insertion into the roof support leg, a fluid passage, an engagement means engaging the inner perimeter of the roof support leg, and a drain and isolator spacers, whereby a user may place an isolator spacer on the isolator and insert isolators into the roof support legs of a floating roof system to adjust the height of the roof support legs to level the floating roof thereby reducing the stress placed on the floating roof as the fluid level lowers, thus preventing damage to the bottom of a tank when the fluid level is decreased and the roof support legs contact the tank's bottom.