×
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

API 510 INSPECTION

API 510 INSPECTION

API 510 INSPECTION

(OP)
Dear experts please suggest me sloution for following issue

I am inspecting a vessel as per API 510. Vessel name plate shows that it was manufactured on british standard but its material identification is not available. Infact no other documents are available. Please tell me what i will have to do? Should i move to material testing or any other solution exist?

RE: API 510 INSPECTION

Quoting API 510 Tenth Edition: 7.7 Evaluation of Existing Equipment with Minimal Documentation

For pressure vessels that have no nameplate and minimal or no design and construction documentation, the
following steps may be used to verify operating integrity.
1) Perform inspection to determine condition of the vessel including a complete dimensional checking of all
components necessary to determine the minimum required thickness and adequacy of the design of the vessel
[i.e. heads, shell(s), transitions, openings, reinforcement pads, saddle supports, etc.].
2) Define design parameters and prepare drawings.
3) Perform design calculations based on applicable codes and standards. Do not use allowable stress values of
the current ASME Code (based on design factor of 3.5) for vessels designed to an edition or addendum of the
ASME Code earlier than the 1999 addendum and was not designed to ASME Code Case 2290 or ASME Code
Case 2278. For vessels designed to an edition or addendum of the ASME Code earlier than the 1999
addendum and were not designed to ASME Code Case 2290 or ASME Code Case 2278, use allowable stress
values of the pre-1999 ASME Code (based on design factor of 4.0 or 5.0). See ASME Code, Section VIII,
Division 1, Paragraph UG-10(c) for guidance on evaluation of unidentified materials. If UG-10(c) is not followed,
then for carbon steels, use allowable stresses for SA-283 Grade C and for alloy and nonferrous materials, use
X-ray fluorescence analysis to determine material type on which to base allowable stress values.
When the
extent of radiography originally performed is not known, use joint efficiency of 0.7 for Type No. (1) and 0.65 for
Type No. (2) butt welds and 0.85 for seamless shells, heads, and nozzles or consider performing radiography if
a higher joint efficiency is needed. (Recognize that performing radiography on welds in a vessel with minimal or
no design and construction documentation may result in the need for a FFS evaluation and significant repairs.)
4) Attach a nameplate or stamping showing the MAWP and temperature, MAT, and date.
5) Perform pressure test as soon as practical, as required by code of construction used for design calculations.

I hope this helps.
Larry

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