What is the main difference between U and UM?

Difference Between U and UM The difference between the U designation and the UM designation is related to size. However, this is not the only difference between the two. UM … Read More

Applicants requesting multiple Certificates of Authorization

Applicants requesting multiple Certificates of Authorization For Applicants requesting multiple Certificates of Authorization, it is not necessary to have a demonstration item with design calculations for each Certificate Designator. A … Read More

Applicant for U and U2 Certificates

An Applicant for U and U2 Certificates could demonstrate its QCS on a Section VIII, Div. 1 demonstration item including design. However, since the Section VIII, Div. 1 demonstration item … Read More

What is a “U” Stamped Pressure Vessel?

What is a “U” Stamped Pressure Vessel? Seeing the “U” symbol on a product ensures that it meets the latest edition of the Code. It also affirms that the vessel … Read More