Pressure Vessel Stamp Question 2

[Rjeffery]

I was looking at an unfired pressure vessel made in PA (USA) in 1967. The manufacturer no longer exists. The Vessel carries a "U" stamp, It also has a "W" stamp and a "CU" in a shield rather than a rectangle.
Whay are the "W" and "CU"? The Vessel also has an ASME number. Would that provide more information?

Thank you in advance

The best way to test something is to squeeze it, slowly, until it breaks!

 

[unclesyd]

The W is for a welded vessel. If my memory doesn't fail me the CU was insurance.

ASME or the NBIC should have the Data Report on this vessel since you have a number. If someone purchased this company they also may have the Data Report.

 

[Rjeffery]

Thank you Unclesyd!

The best way to test something is to squeeze it, slowly, until it breaks!

 

[SnTMan]

I think unclesyd is right, Commercial Union insured my previous company, I believe they did a name change a few years back.

Regards,

Mike

 

[Rjeffery]

"Tanks" SnTMan (pun intended!) you guys (gender neutral) have been a great help!

The best way to test something is to squeeze it, slowly, until it breaks!

 

[SnTMan]

Rjeffery, you're welcome. I am generally the kind of person who will tell you everything I know, and not take up much of your time doing it

 

[unclesyd]

We still have process equipment fabricated in the 50's and like your vessel none of the companies are still in business. Though we kept very good records on each vessel there were times when we had to go hunting. In 1996 I was asked to look at some papers in the property accounting office to determine disposition. The papers turned out to be the data sheets for every pressure vessel in inventory form 1951 to 1980.

Aside from the above mentioned marks you will sometimes find a "makers mark" along with the mark of crew that fabricated the vessel. It seems that a lot of companies were proud of their work and liked to mark it. Another area you find strange marks is where a welder stamped his weld with symbol instead of alpha-numeric characters.