Yes, sometimes no action is better than repair. Things change real fast during a shutdown. We contacted the AI just after my last note on this forum and resolved the issue - weld to be left as-is until the next opportunity to change out the reducer, or correct the internal profile. It's been...
First thanks, metengr, for the super quick response. I am handling this during a short duration maintenance outage, so we already decided to extend the weld cap to resolve the issue, but your input is greatly appreciated.
The actual operating temp (as obtained through plant historian) is...
B31.1 clearly states that terminal points themselves (e.g., steam line connection on a header) are considered part of the boiler external piping. However, the code does not clearly define what material may be included in the terminal point.
My question is: can I include the counter-bored region...
You should use the allowable stress corresponding to the year of design submission.
I have a similar issue. I need to verify Min T for A155 Class 2, Grade KC55, but I do not have the allowable stresses for various temperatures. Since you have the stress tables, could you let me know what the...
First off, sorry, this is probably far too late to respond, but I just came across this today while browsing the forum.
ASTM A105 - Grade II is a forging, but this grade does not appear in current standards - it is simply listed as ASTM A105 in current standards. The Grade II designation was...
These are not likely parameters from an impact type test, rather they are related to fracture toughness tests. In North America, 'K' typically refers to stress intensity factor, with Kc referring to the critical value of K. Following ASTM Method E399 for testing, the plane-strain fracture...
Yes, I was aware of this, but good point. I have those allowable stress tables from a colleague but, unfortunately, do not have the entire Code. I've observed small discrepancies in the original reported min T's that I cannot account for and I was told that the factors included in the formula...
Anyone with a 1962 edition of ASME Sec I should be able to help. I would like to know if there was a formula in that edition for minimum required thickness in tubing (similar to PG-27.2.1 in the current code). If so, was it written the same way, that is, t=[PD/(2S+P)]+0.005D+e , or was the...
