No U-1 Form? 1

[RefineryQC]

My question was involving working on vessels that have no U-1 Form.

Is this the end of the world as we now know it?

I know there is a ton of them out there and was wondering what would somebody do in this situation? What we know now is... That they have name plates, and they weren't registered with the National Board.

I have the year built, the manufacturer, & the serial number.
Is this essentially all I need?


Thanks for your time.

 

[bernoullies123]

Please redraft your query as it makes no sense.

What is a U-1 form? And what is the end of world as we know it?

 

[vesselfab]

this is why we register every vessel we build, regardless of client requirements with the National Board. There is always a U-1 or U-1a form available to them if they loose papers.

you could also go back to the original fabricator and see if they have a copy.

 

[fegenbush]

The original U-1 is not required to perform repairs or alterations on the vessel. However, having the form makes it much easier.

If you nor the original manufacturer have the form, your AI may require an analysis of the vessel to the original code of construction as part of the review in the event of an alteration. Repairs are much more straightforward.

Information you may require:
-Materials of Construction
-Pressure and vacuum rating
-Pressure and vacuum temperature
-Minimum design metal temperature
-Existing shell, head, and nozzle thicknesses
-Lethal service of the vessel (Yes/No)
-RT requirements
-PWHT requirements

 

[metengr]

Information you WILL require for repairs to either API or NBIC;

Information you may will require:
-Materials of Construction
-Pressure and vacuum rating
-Pressure and vacuum temperature
-Minimum design metal temperature
-Existing shell, head, and nozzle thicknesses
-Lethal service of the vessel (Yes/No)
-RT requirements
-PWHT requirements

 

[stanweld]

Some of the information provided above may be on the Nameplate, assuming the vessel has one attached.

 

[stanweld]

If drawings are available, much of the required info will be defined thereon.

 

[Duwe6]

Get ahold of National Board. For a nominal fee [<$30 per page] they can send you a copy of your U-1, IF the original mfr. actually registered it.

They will need the Mfr's name, year of mfr, and the National Board # of your vessel. Perhaps what you are seeing as s/n is actually the NB#.

I have done this A LOT. Been several places where fulks threw out "useless files" like U-1's and as-Built drawings.

 

[fegenbush]

Stanweld & Metengr,

I was uncertain of the contents of the nameplate, thus the usage of "may". If it is on the nameplate, RefineryQC has it.

For some repairs, it is not necessary to know some of the information (Adding a nozzle of like size, thickness, and material to one existing on the vessel, e.g.). I am not saying that is how *I* would go about it, but it does happen and regularly at that.

 

[Duwe6]

Matching material is tough w/o a U-1. You need both Chemical and Physical testing. 516-Gr 55, A36, and 285 Gr C can't be differentiated with a Niton XRF 'gun'.