×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

ASME DIV 2 - UDS (User Design Specification)

ASME DIV 2 - UDS (User Design Specification)

ASME DIV 2 - UDS (User Design Specification)

(OP)
Hi I'm from Engineering Consultant Oil & Gas.
I would like to know since we are on feed stage to provide pressure vessel Div.2 specification and provide together UDS(User Design Specification) to our client (oil company).
The question is under RPE signiture of the form, what is my understanding should be sign by RPE engineer from client or fabricator side and not from our consultant side.
We are as a consultant not suppose to sign the form because we just give the design parameter but not involve in detail in design to manufacture the equipment/vessel.
I hope to who had same case can share this similar problem and what is the conclusion of this isue.

RE: ASME DIV 2 - UDS (User Design Specification)

Hi!

PRE (Package responsible engineer). As you mention it's in FEED stage and at this stage,signing any form is not making any sense. But in later stage (Execution) , it's the PRE responsibility for the package/Equipment. To safeguard yourself,first you can take in writing(In Offer or Technical Query) from the manufacturer regarding the performance guarantee.

RE: ASME DIV 2 - UDS (User Design Specification)

In addition to above, it's the manufacturer responsibility to prepare and inspector to review the UDS.

RE: ASME DIV 2 - UDS (User Design Specification)

No no no mechanical2014 - your last post is completely wrong. It is the responsibility of the USER to prepare and certify the User's Design Specification (hence the name...).

Ideally, this document would be prepared prior to the RFQ so that the manufacturers bidding the job know the scope.

The UDS is the responsibility of the User or their designated agent. I would suggest that if you don't understand this, then you are likely unqualified to be preparing or certifying that UDS. Please find an engineer experienced in pressure vessel design to Division 2 to assist you with this activity.

RE: ASME DIV 2 - UDS (User Design Specification)

Ooops!! Even after writing "In addition" i made mistake in writing clearly.
It shall be read as "it's the manufacturer's responsibility to present UDS to an inspector for review" and his approval. My intention was to tell Mr.Shuhaimi not to worry with any signature protocol, as authorized inspector will take care of this. However, correct information in UDS (or filled data sheet) in the requisition is of course his responsibility.

RE: ASME DIV 2 - UDS (User Design Specification)

mechanical2014 - I really don't know where you are getting your information. What you have written is, again, incorrect. Nowhere in Division 2, Part 2 does it state that it is the Inspector's responsibility to review the UDS, other than what is covered in 2.4.3.2. And it most certainly is NOT the Inspector's responsibility to have anything to do with stewarding signature protocols.

The UDS is the sole and singular responsibility of the User or the User's designated agent. I strongly recommend that you review all of Part 2, including the Annexes, in its entirety.

RE: ASME DIV 2 - UDS (User Design Specification)

May be my interpretation is wrong but this is what mentioned in Table 7-A.1 of SECTION VIII, DIVISION 2, 2013 edition.

RE: ASME DIV 2 - UDS (User Design Specification)

mechanical2014 - your interpretation is incorrect. See Part 2.

The Inspector's responsibility is to verify that the UDS exists and has been certified in accordance with the requirements detailed in Part 2. The Inspector has no responsibility otherwise with regards to the UDS.

RE: ASME DIV 2 - UDS (User Design Specification)

Noted! We have come full circle now.
As you mention regarding the certification of UDS. As per the code "Professional Engineers, registered in one or more of the states of the United States of America or the provinces of Canada and experienced in pressure vessel design, shall certify the User’s Design Specification meets the requirements in paragraph 2.2.2, and shall apply the Professional Engineer seal in accordance with the required procedures.".
In my opinion, Mr.Shuhaimi responsibility is to prepare the UDS but signature and hence certification is not his responsibility. But if he is PE (Professional Engineer), he can very well do that too.

RE: ASME DIV 2 - UDS (User Design Specification)

Correct. And that RPE certifying the UDS needs to be understood that they are working on behalf of the User or the User's Designated Agent, and not the Manufacturer.

There are situations (that I have been personally involved in) where the same engineering organization is involved in certifying both the UDS and the MDR. Following the rules in the Code, this is permitted, provided that there are specifically-different engineers doing the different certifications. One engineer works for the User and the other for the Manufacturer.

That said, I am also aware of situations where the User has designated the Manufacturer as the User's Designated Agent. Although this slightly complicates matters, it can be done. But in that situation, it is important to maintain the identity of the User's Designated Agent separate from the Manufacturer.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources