API 650 Tanks MAWP is too low to utilize convention / emergency vents

[richissa]

Hi,

The problem is that the MAWPs on API 650 Storage tanks are too low to be able to utilize conventional conservation/emergency vents.

It was suggested by the client to increase the allowable working pressure and lower the operating pressure of the flare/vapor combustor header.

Can anyone please advise how to approach this problem.

Thanks!

 

[Duwe6]

A review of Atmospheric Storage Tank conservation vents and emergency vents from tank appurtanance companys -- Shand & Jurs; Protectoseal to name 2 -- will show that they are available down to 1/2 ounce per square inch. A 3/16" thick steel roof weighs about 0.7 osi.

 

[JStephen]

Are you dealing with existing tanks, or designing new tanks?

 

[JStephen]

Are you dealing with existing tanks, or designing new tanks?

 

[richissa]

This is for exciting tanks