Difference between NACE MR0175 and MR0103

What is the difference between NACE MR0175 and NACE MR0103? And how do they compare?

Last week I was asked again: “Why there are two specifications existing and what is the difference between NACE MR0175 and NACE MR0103?” This led me to think about whether this topic also concerns other end-users and therefore I have summarized all important key data in my current article.

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Challenge of Design Verification Test (DVT/TAT)

Challenge of Design Verification Test (DVT/TAT).

In my professional career I have found that in practice there is often misinterpretation in understanding Design Verification Test (DVT). DVT is formerly known as TAT (Type Acceptance Test) – a Shell Specification (MESC SPE 77/300A).

In the industry, there are many different manufacturers offering valves meeting Shell requirements. Users should also find out if these valves also meet the full Shell MESC SPE 77/300A Specification. This misinterpretation made me write this post.

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