Frangible Roof Definition

How to use frangible in a sentence.

Frangible roof definition.

4 2 3 2 areas that are pitted. The concept of frangible roof only applies to flat bottom cone roof tanks with limited roof apex angle. 4 2 api s tandard 653 tank roof to shell joint modification such as reinforcement of the joint attachment of handrail or other frangible joint area change. Frangible bullets are typically made of non toxic metals and are frequently used on green ranges and outdoor ranges where lead abatement is a concern.

The reasoning behind present api design formulas is reviewed. Targets are placed on steel backing plates that serve to completely fragment the bullet. Value less than if instead the cover was non frangible. A frangible roof joint for small diameter tanks wherein the joint forms a flexible gastight connection between the tank shell and the roof and comprises annular link means containing an annular plate having an inner edge corresponding to a first edge thereof and an outer edge corresponding to a second edge thereof sealingly secured at or adjacent the first edge to a rim of the tank shell the.

Frangible bullets are often used by shooters engaging in close quarter combat training to avoid ricochets. Holes through roof plates shall be repaired or replaced. Considering the project above the roof thickness is 9 5 mm and aws recommends a minimum weld size of 3 16 4 8mm and also there is the platform structure which stiffens the roof. C one way to obtain a frangible joint is when the roof plates are welded to the compression ring with a 3mm seal weld only and when the roof plates are not fixed to any roof supporting structure.

However in the context of tanks the word has a specific meaning and is defined in the main tank construction standards bsen 14015 and api650. The requirements for frangible attachments of roofs as specified in api 650. Frangible is a word that means easily broken. In such tanks the roof to shell joint is intended to fail in the event of overpressurization venting the tank and containing any remaining fluid.

Frangible definition easily broken. In any case the reflected waves bouncing back and forth between the walls floor and roof produce a shock pressure loading on interior surfaces of the structure. Frangible definition is readily or easily broken. Most frangible toys are not suitable for young children.

Synonym discussion of frangible. This paper presents the results of an investigation into the frangible joint behavior of tanks designed to api 650 rules.