I've found myself in the same situation a couple of times this year. I'm a Mechanical Engineer. Ultimately, I decided that sacrificing my personal life for a job was not worth it - I'm in a stable relationship thus, my partner would not have been able to come with me.
You can philosophize all you want on getting your SA-516 GR 70 material to pass the impact tests required / derrating it according to the membrane stress ratio. Then again, I wish you the best of luck in passing the production weld impact testing that is required for this vessel.
I concur with...
Please read UCS-67(a)(1) through (4).
Figure UCS-66 and impact testing are different routes in ASME VIII Div. 1. Depending on the route selected, different requirements apply.
To your question: yes, it is possible to reduce UCS-66(c) with the corresponding ratio in UCS-66(b)(1)(-b).
Is it advisable? You need to use your engineering judgement here.
The choice of 0.66Sy or 0.9Sy relates to modifying one possible governing option of the allowable stresses in Div. 1. The other option still applies to stainless steel materials with a higher allowable stress: tensile strength / 3.5.
Therefore, the application of an elastic-plastic method with...
You can always try to reduce the Blind Flange's MDMT from 11°C (approx) down to 0°C through UCS-66(b).
The welding neck flange governing thickness is 16 mm.
WRC 537 evaluates a stress state, that is three forces and three moments with their respective signs, and their impact on 4 points (0, 90, 180 and 270 degrees) at the junction between the vessel and the nozzle (or its reinforcing pad, if applicable).
Now - what are the actual stress states that...
Div 2 Part 5 currently offers no guidance over how to deal with creep. Significant knowledge is required, though there is a codecase relatively new that offers some information.
Section VIII is silent about who is doing the design from what I have gathered. What MA 47 specifies is what the designing engineer's qualification requirements are.
You could submit request for interpretation, asking that a new record be opened.
We are trying to pass an item record to address this in one jurisdiction, but of course that this affects users on a global basis.
47-2(a)(1) does not provide enough room for all jurisdictions. This should definitely be looked into.
Yes, you need to hire a Certifying Engineer for fatigue assessments now.
On this regard I would like to quote the introduction:
"The Code is not a handbook and cannot replace education, experience, and the use of engineering judgment. The phrase engineering judgment refers to technical judgments made by knowledgeable engineers experienced in the application of the...
