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         Pressure Vessel Safety 

Awareness Tutorial        

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Introduction
Basics
Pressure
Force
Pressure Vessels
Types
Stresses
Calculations
Factor of Safety
Safety Devices
Rupture Disks
Relief Valves
Safety Relief Valves
Safety Valves
Codes
Names Plates
Repairs
Conclusion
Test
Congratulations

 

Pressure vessel types?

Thinned wall -

These pressure vessels are the most categorized.  A thinned walled pressure vessel is any cylinder [shell] ratio  that is 10% or less the ratio of the thickness to the diameter.  Another way of saying this is a pressure vessel is thinned walled if the diameter is 10-times or more the thickness.

  t   < 0.1

 d           

Thick walled -

These pressure vessels are the least common.  A thick walled pressure vessel is any cylinder [shell] ratio  that is 10% or more the ratio of the thickness to the inside diameter.

  t   > 0.1

 d           

Storage tanks -

Storage tanks are a category of thin walled pressure vessels except that are typically under 15-psi and are super thin when compared to the ratio above.

Transportable Containers -

These are the most common pressure vessel and potentially the most ignored.  These are mass produced and require testing every 10-years for propane and gas.

Propane bottles - Fork trucks, barbecues, 

Gas cylinders - CO2, O2,...

Other - Containers, gas cans, bubblers,...

 

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Last modified: March 12, 2005