CP for Buried Duplex

[Putra81]

Hi Guys,

I just following the previous thread338-290140 and have some additional question.

If the soil have the SRB with sulphate content around 750 ppm, what is the suggestion for the level of protection to avoid this SRB attack our pipeline?

what is the maximum level to avoid the HISC? it seems this Duplex have narrow range for the potential protection?

Thanks for the inputs,

Best regards,
Putra

Viko Yuza Diputra

Materials/Corrosion/Integrity Engineer
viko_yuza@yahoo.com

 

[SJones]

Sulphates in the soil does not mean there are SRB. An appropriate bacteria test will confirm whether they are present. If bacteria are identified, it becomes a problem to work out what negative potential is needed without enhancing the risk of HISC.

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.