Were these fittings welded on in position with the blind flange bolted up or were these fittings welded onto the blind flange in the shop. Just curious???
The book by Thielsch, recommended by MJC is an eye opener.This book all though dated is a complete Encyclopedia of pressure parts failures see in the industry of power, chemical, & oil. Detailed to the explanation of weld defects, material defects and all types of stress, and many photos to...
Years ago I coordinated and supervised a team of NDE techs at a major oil refinery in the Bay area. We were tasked with inspecting existing pipe to determine the extent of corrosion both inside and outside of the pipe. We used two,(2), NDE methods, UT and RT. The UT was used first
to detect...
IMO: In the 1st set of pictures the two areas of concern look to be where an angle or fit-up attachment was welded and then removed by hammering causing the base material to be 'ripped' out.
We have welding standards now that prohibit this type of removal because you will cause a 'pull out' of...
The welding standards of my previous contractor, B.....l instructed the craft to avoid striking
directly a bracket that was tack welded as this method would pull out some base metal and then
this would have to be weld repaired and of course NDE'd. They instructed the craft to
grind a...
In the March, 2019 AWS Welding Journal page 44 the following: 'Investigation of a Ruptured
Socket Weld in Sour Service'. Very interesting. It looks like they welded a weld neck flange
into a SW valve? The SW was a single pass?. 'Table 4'? I have some questions but thought I would just throw this...
I suggest you use a carbide rotary burr of the highest quality instead of grinding SS,inconel,CU/NI or duplex to remove any hint tint and to make any cosmetic repairs. As EdStainless has said 'when you grind you just embed the oxides into the surface'. This is why I always have my welders 'hand...
I assume you are interested in the photo which shows the large buckle in the lower shell and the
large straight edge which was used to confirm this buckle. I will look for this picture in my families albums and at the same time I will check to see if it is restricted to show it.
I will also...
This Unit 1 at Peach Bottom was a HTGR reactor. The site has been demolished for some years now.
Their are 2 more General Electric boiling water reactors running there now. Those horizontal rings which you see T-beams. The verticals between the horizontal T-beams are stiffeners. The containment...
