PED categoprisation of oil/petroleum products
Hello
I have one technical question regarding byproducts of oil. I need to make a categorisation of diferent pipelines which consist of:
JET A1 fuel
AB 100 LL (gasoline fuel for small planes)
BMB 95 (gasoline)
EDG P*BS*F (diferent diesel fuels)
......now my question is this?
What diagram in the PED do I categorise it by???
Diagram 9 :
[I]liquids having a vapour pressure at the maximum allowable temperature of not more than 0*5 bar above normal
atmospheric pressure (1 013 mbar) within the following limits:
— for fluids in Group 2 with a PS greater than 10 bar* a DN greater than 200 and a product of PS and DN
greater than 5 000 bar (Annex II* table 9).[/I]
.....or diagram 6:
[I]
gases* liquefied gases* gases dissolved under pressure* vapours and those liquids whose vapour pressure at the
maximum allowable temperature is greater than 0*5 bar above normal atmospheric pressure (1 013 mbar) within
the following limits:
— for fluids in Group 1 with a DN greater than 25 (Annex II* table 6)*[/I]
I am not sure under which category do they fall?????
My operating conditions are max DN 250* pressure 10 bar and 90 °C
Re: PED categoprisation of oil/petroleum products
You have a group 1 fluid. Now you have to determine if your fluid is "gas" or "liquid". Selection of the diagram for categorization depends on the vapour pressure of your fluid @ design temperature. If your fluid has vapour pressure @ 90C bigger than 0*5 bar g its considered as gas which means your diagram is No. 6. If your Group 1 fluid has vapour pressure @ design temperature lower than 0*5 barg* your diagram is No. 8. Example: water @ 120C. Your fluid is group 2. Vapour pressure of the water at 120C is bigger than 0*5 barg. This means your diagram is No. 7.