×
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

joint efficiency vs x-ray examination

joint efficiency vs x-ray examination

joint efficiency vs x-ray examination

(OP)
THE JOINT EFFICIENCY DEFINE TOTALLY X-RAY EXAMINATION OR JOINT EFFICIENY AND X-RAY EXAMINATION MUST BE DEFINED ON A DATA SHEET OF A PV

RE: joint efficiency vs x-ray examination

Yes, the joint efficiency and extent of X-ray "RT" is listed on the U-1 Vessel Data Sheet.  The quantity of RT, and thus the joint efficiency, and thus the effective thickness of the heads & shell have to be defined by the Engineer of Record.

No RT = 70% Efficiency = 0.5" material calculates at 0.35"
Spot RT = 85% Efficiency = 0.5" material calc's at 0.425"
Full RT* = 100% Efficiency = 0.5" calc's at 0.5"

Spot RT is usually 1 single shot and 1 piece of film.  Highly recommended to take your [theoretical] 0.5" vessel from 0.35" useable material up to 0.425"  This is a 27.5% increase in usable thickness for the price of a single RT.

Full RT is not 100% RT.  Full entails 100% of long seams, Spot Shots on the circumferential welds, including heads, and no RT on the nozzles.  Usually only cost-effective on stainless steels and more expensive alloys.  

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