Thursday, February 13, 2025

Re: [MW:35428] Re: ASME Sec. VIII Div. 1 - MDR form U1 / U1A

The points to be included in the "Notes" section of Form U-1A depend on the type of vessel (e.g., cryogenic, NACE, or lethal service) and the material used (SS, Duplex, or Carbon Steel). Below are the common points to consider:

Common Points to Include in U-1A Notes:

1. Radiographic Examination (RT)

Percentage of the vessel subjected to RT (e.g., "Shell and heads 100% RT per UW-11(a)").

Acceptance criteria (e.g., "RT per ASME Section VIII, Div. 1, UW-51").


2. Post Weld Heat Treatment (PWHT)

If applied, mention the temperature and holding time (e.g., "PWHT at 1150°F for 1 hour per UCS-56").

If exempted, state the exemption clause (e.g., "PWHT not required per UCS-56(d)").

3. Impact Testing

If required, reference the applicable impact test exemption rules (e.g., "Impact tested per UG-84" or "Exempted per UCS-66").

4. Material Certification

If material traceability applies, note it (e.g., "All materials comply with ASME Section II, Part A and B").

Mention any dual-certified materials (e.g., SA-516 Gr. 70 / SA-515 Gr. 70).

5. Special Service Conditions (if applicable)

If designed for cyclic service, reference U-2.

6. Design Code & Special Considerations

Mention any Code Cases used.

Any Finite Element Analysis (FEA) carried out for specific weld joints.

Type of Bolt, Stud, and Washer used.

Best regards,
Deerendra
+91-9112146005

On Sun, 9 Feb, 2025, 19:49 israr, <ahmedisrar.nm@gmail.com> wrote:
Dear Team,
Could anybody tell what specific points to write in Notes of form U-1A?
Our AI always change the points every time.


On Friday, February 11, 2011 at 10:38:54 AM UTC+5:30 Prasad wrote:
Dear experts & ASME Authorized Inspectors,


Our company have ASME certificate of authorization for ASME U stamp
with scop covering
manufacturing activities at shop & field sites controlled by our
company.
We have constructed a pressure vessel at field site owened by our
customer.
Now we have to prepare MDR in U1 form.
My question is againest name & address of manufacturer whether we have
to put field site address or address of our company as apeared on
certificate of authorization.

Please share your experience & views on above.

Thanking you.

Prasad

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