Jump to content

Featured Articles

Check out the latest featured articles.

File Library

Check out the latest downloads available in the File Library.

New Article

Product Viscosity vs. Shear

Featured File

Vertical Tank Selection

New Blog Entry

Low Flow in Pipes- posted in Ankur's blog


Diked Area Volume According To En

lpg; basi; sewer

3 replies to this topic
Share this topic:
| More

#1 reihane1


    Junior Member

  • Members
  • 12 posts

Posted 09 July 2019 - 08:08 AM

Hello everybody,


We have some Spherical LPG storage tanks which are connected to 3 different remote pounding basins. Unfortunately the plant is old and we could not find design basis for basins. Because of change in  regulations in germany, LPG considered  hazardous to water and we need to cover the surface of basin with betone. My questions are:


1- Is there any EN or german regulation which describe how the volume of the basin shall be calculated ( I have seen in other posts people refering to API2510 but it is an american standard and we need to design according to european standard)


2- how this system shall be connected to waste water system to drain rainwater/firewater/foam? is it enough to conect it to sewer system with a water barrier and gas sensor ?

Many thanks


Edited by reihane1, 09 July 2019 - 08:14 AM.

#2 PhilippM


    Junior Member

  • Members
  • 21 posts

Posted 09 July 2019 - 12:20 PM

I don't think LPG is considered hazardous to water. Do you have the SDB ("Sicherheitsdatenblatt", German for MSDS) that gives you the WGK ("Wassergefährdungsklasse", Water hazard class)?

#3 reihane1


    Junior Member

  • Members
  • 12 posts

Posted 10 July 2019 - 12:24 AM

I have just checked MSDS.It is WGK3. Maybe it is good to mention that the composition is more C4 than C3. Do you know if there is a German or European Norm for design of basin?I could not find anything.



#4 PhilippM


    Junior Member

  • Members
  • 21 posts

Posted 10 July 2019 - 01:34 PM

I still highly doubt that LPG is a WGK 3 substance. All sources that I found say that it is "nwg" (nicht wassergefährdend, not hazardous to water) as it evaporates under atmospheric conditions and therefore cannot enter the groundwater. You should really check if this MSDS is the correct one (can you upload it here?).


But for the sake of argument let's say it is indeed hazardous to water:

You should look in the following laws and standards:



-TRGS 509

-TRBS 3146/TRGS 746

-TRws DWA-A 779

-TRwS DWA-A 785


Similar Topics