Pipe Schedule for LPG truck loading 2

[iahmed09]

Is there a document where it is stated what schedule pipe we should use for LPG loading skid for truck loading. Pressure is 275 psig @ 330 gpm.

Thanks,

 

[SNORGY]

My first guess is 4" SCH 40.


Regards,

SNORGY.

 

[BigInch]

Yes. The design code.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[iahmed09]

BigInch,

I will appreciate if you can give any specifics like name of the document. I am new to this.

Thanks,

 

[SNORGY]

API 2510 may be of some value to your work.


Regards,

SNORGY.

 

[dcasto]

NFPA 58 section 3-2.8.2 (b) (1) The pipe shall be Schedule 40 or heavier.

Footnote in the interpertations is that ANSI B31.3 can be used but NFPA 58 is more convient.

 

[BigInch]

"Or heavier" is an interesting wall thickness. Perhaps B31.3 would be more convenient in determining that dimension.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[iahmed09]

Do you guys think we need vapor eliminator on top of strainer for said flow conditions. I am having a hard time finding a 3" 300# strainer/vapor eliminator combo in 4-6 weeks LT. I am almost thinking of excluding the option of air elimination and using just the strainer.

What do you guys suggest.

 

[dcasto]

plain ol strainer from Weamco, Tulsa, OK will do. I'd use 6" if you have several hundred feet of line, 4" has about 1.15 psi/100'.

 

[iahmed09]

It will be used on loading rack where there is minimal piping. Just need to use so we can protect the PD meter.

Do you think we need vapor elimination.

 

[dcasto]

you better not need vapor elinination else your meter will not be in compliance with API measurement standards.

You should put a high point vent so you can blow it down before opening it. And do not put a by-pass around it.

 

[iahmed09]

Is this in API MPMS 5.2 PD meter or API MPMS 6.2 Loading rack or a different document I may have to download.

 

[iahmed09]

I found it. Thanks