A frangible roof joint forming a flexible gastight connection between a tank shell and a roof comprising an annular link mechanism sealingly secured at or adjacent a first edge thereof to a rim of the tank and sealingly secured at or adjacent a second edge thereof to the periphery of the roof.
Non frangible roof.
The reasoning behind present api design formulas is reviewed.
Most frangible toys are not suitable for young children.
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.
You will be required to provide a vent capable of relieving the emergency venting set forth in api 2000.
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.
Such relatively weak roof to shell joints are known as frangible roof joints.
According bulgarian experience cone and dome roofs can be ensured with frangible joints.
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.
Frangible definition is readily or easily broken.
Frangible is a word that means easily broken.
This paper presents the results of an investigation into the frangible joint behavior of tanks designed to api 650 rules.
How to use frangible in a sentence.
Targets are placed on steel backing plates that serve to completely fragment the bullet.
Frangible bullets are often used by shooters engaging in close quarter combat training to avoid ricochets.
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.
Guidance is also provided on how to determine the actual frangibility of tanks built before 1985 the date where frangibility became known as a design requirement.
I can answer your question regarding frangible roof design.
It can be achieved when part of the welds between cover plates and structures has decreased height.
Synonym discussion of frangible.
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.
The concept of frangible roof only applies to flat bottom cone roof tanks with limited roof apex angle.
Roof plates usually are welded to supporting structure.
The securement of the annular link mechanism to the rim and the roof is such as to permit.
