storage tanks-NACE MR0175
storage tanks-NACE MR0175
(OP)
Hi
Crude oil pipeline is sour and there are some storage tanks in terminal. Can we exclude NACE from these tanks? There is a table that exclude storage tanks in NACE MR 0175 but for flow lines not transportation pipelines.
Crude oil pipeline is sour and there are some storage tanks in terminal. Can we exclude NACE from these tanks? There is a table that exclude storage tanks in NACE MR 0175 but for flow lines not transportation pipelines.





RE: storage tanks-NACE MR0175
Steve Jones
Corrosion Management Consultant
http://www.linkedin.com/pub/8/83b/b04
All answers are personal opinions only and are in no way connected with any employer.
RE: storage tanks-NACE MR0175
Take for example a refinery which has crude tanks holding sour crude with associated pipelines. They are not designed as per NACE MR0103. So the crude tanks in your terminal could easily be exempted from NACE MR 0175 but you have aleady been cautioned by Steve Jones in case there is a fatality.
RE: storage tanks-NACE MR0175
According to Table-1 of MR-0175/ISO-15156-2:
ISO 15156 is applicable to materials used for the following equipment:Flow lines, gathering lines, field facilities, and field processing plants
Permitted exclusions:- Crude-oil storage and handling facilities operating at a total absolute pressure below 0,45 MPa (65 psi).
This list is non-exhaustive as per MR-0175/ISO-15156-2.
Hence as advised by Steve Jones, the adoption of MR-0175/ISO-15156 for Crude Storage Tanks is a subjective discretion depending on the technical requirements.
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299
RE: storage tanks-NACE MR0175
"Everyone is entitled to their own opinions, but they are not entitled to their own facts."