The document discusses strategies for dealing with microbiological corrosion in gas pipelines. It introduces Dr. Reza Javaherdashti, who has over 20 years of experience in corrosion management and microbiological corrosion. It notes that dry gas pipelines can still experience microbial corrosion. Hydrostatic testing can induce microbial corrosion. The document provides facts about microbiologically influenced corrosion and lists some examples of corrosive bacteria, including sulfate-reducing bacteria and iron-reducing bacteria. It recommends strategies for dealing with microbiological corrosion, such as recognizing damage, evaluating risk, assessing treatment programs, gaining engineering knowledge, and applying Dr. Javaherdashti's corrosion management method.

1. Strategies to deal with
Microbiological corrosion in gas pipelines
Dr. Reza Javaherdashti
General Manager
Eninco Engineering B.V.
The Netherlands

2. Dr. Reza Javahedashti
• PhD in Materials Science –Metallurgical
Engineering
• Has over 20 years of both field and academic
experience
• Fields of expertise: Corrosion Management,
Microbiological Corrosion, Future Studies.
• Linkedin Profile: https://www.linkedin.com/in/reza-
javaherdashti-9a2a2415/

3. Some books authored/co-authored by Dr. Reza Javaherdashti

9. Dry Gas Myth!

10. McKetta and Wehe Curve

11. Hydrotest!

13. Example of failed line pipe manufactured via LF-ERW (Low frequency Electric
resistance welding) after HYD

14. Microbial
Corrosion!

15. MIC in gas pipelines
1. Even so-called “Dry Gas” is not completely dry, it has a water phase
in which microbial corrosion can find an opportunity to appear.
2. MIC can be induced via hydroststic testing (a test applied to test
strength and leakage resistance of welding)

16. Some Facts
Microbiologically influenced corrosion (MIC) is electrochemical
corrosion initiated , enhanced or inhibited by, but not limited to,
bacteria.
Many engineering materials including metals and non-metals (e.g.,
concrete, and polymers) have been reported to be prone to MIC/MID.
This corrosion phenomenon can be called as :Microbiologically
induced corrosion (some researchers try to distinguish between
“induced” and “influenced” but NACE prefers “influenced”), microbial
corrosion, biocorrosion, biofouling, biological corrosion
All the above may be used with some reservations in place of each
other but what is definitely wrong is to address it as “bacterial
corrosion”: MIC does not contain bacteria only!

18. SRB
IRB

19. Some examples of “Corrosive” Bacteria

22. What to do!

23. 1. Recognise the extent of damage
2.Evaluate the associated Risk
3. Assess the most feasible treatment programme
4.Establish engineering knowledge via training
5. Apply Javaherdashti method in corrosion
management (define the involved corrosion problems,
understand the available treatment methods, apply the
treatment, feedback and evaluations, put it in writing!)