2 replies to this topic

[proinwv]

I would like to know what comments anyone may have on the changes in the new edition.

 

Also, I was told by a manufacturers rep that the reason for 7th ed is that API was moving away from its relationship with ISO. Has anyone heard anything in that respect?

[EnerJack]

Hi proinwv,

 

After a quick look at API 2000 7th ed, I see a small scope difference in the outbreathing section (>40 Celcius to >49 Celcius for air-equivalent flow conversion) and they added new equations for volatile liquids.  They also changed the definition of what is vented during outbreathing from air to vapour/gases at actual pressure and temperature.  In Annex D.9 there is a new table to guide the convertion of calculated flows from actual to normal/standard conditions. In the inbreathing section there is a new reduction factor equation for double wall tanks.

 

I saw some clarifications in certain parts of the standard but the main equations seem the same.  Vent suppliers don't seem to have modifed their sizing software either.

 

I havent spent so much time to look for differences but I hope this helps. 

[paan]

Dear Expert,

 

I would like to know if this standard is applicable to all liquid other than petroleum? currently working on tank blanketing for storage of palm oil based product.

 

Regards,

Farkhan