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Thank you, jt1234, a very kind offer, but not necessary. Truly. We do have several people exploring options internally, no need for your additional effort. Thank you. The comment for welding and hydro is because the vessel fabrication is complete; people on my team had suggestions incorporating...

Thanks, @jt1234. I started with UG-44(b) but was far from the result my client requires. Then I tried Appendix 46. Then I tried Appendix 2. Client just wants to divert more than what I think is a reasonable amount of load to the flange. I will keep working on it. End result may just be sticking...

I will be looking into 2901-1 tomorrow, not yet familiar with it. Posted in another forum whether or not it could be toggled on in Compress? I may end up going through my output line by line to see if the new values will grant me some relief.

Is there a way to invoke Code Case 2901-1 in Compress?

@jt1234 and @TGS4 I get it, and I have no intention of arguing or disrespecting your response. For further context...the vessel and nozzle were designed correct per the original stress data. Since completion of vessel fabrication, client would now like to remove a pipe support which passes...

Appendix 2, Figure 2-4, Note 4 reads in part, "Facing thickness greater than 1/16" shall be in excess of the required minimum flange thickness, t; those equal to or less than 1/16" may be included in the overall flange thickness." I interpret that (rightly or wrongly) as I may consider 1/16" of...

Partial Heat Treatment - only part of the vessel has been stress relieved.

I believe the answer lies in the original Code Case 2235-9. It stipulates minimum 1/2" (13mm) thickness and then a list of complimentary requirements. Whether or not that Code Case was struck and written into the Code, I am not sure.

I don't think Code out-of-roundness rules apply to non-pressure parts like skirts. I would dog it and full penn all around.

Aplogies if this post appears twice...experiencing some issues over here... I calcualte/estimate surface area of a 2:1 head using 1.084D^2, multiply by thickness to get volume of steel, then multiply by density of steel used to get weight. I use 489.6 lbs/cuft for carbon steel. This method...

Similar to a post last week. It depends on where the vessel is and whether or not it has been put into service. If the vessel is still at the shop, it is not a repair. If the vessel is delivered to site but has not been put into service, it is not a repair (as is the case in my jurisdiciton)...

If the vessel is only at site but not commissioned and operating, it does not necessarily mean 'repair'. The bracket and hydrotest may be performed under Section VIII. It could be as simple as how your jurisdiction is defining 'repair' and/or 'alteration'. As always...I could be wrong.

I am not familiar with 31.8 so I may be speaking out of turn here... Stress relieve is dependent on thickness of weld (not necessarily thickness of steel). So as long as you you do not have a weld in the LWN, you should be ok. This does not include/exclude any stress reliefs that may be...

Yes, you can weld SA-36 to SA-516-60, as well as to your blind (SA-105 or SA-350-LF2, or any other P1 material for that matter). Regardless of sour service it is acceptable. Your client specs may say otherwise. Also refer to UCS-6(b); SA-36 is not only for structural but also approved for...

Agreed...'should' be...I just haven't seen it written anywhere as such until now. I think I can trust your authority though ;) Thanks.

Anybody know the 'mandatory' date for Section VIII 2013 Edition?

In addition to all above, depending on vessel diameter and size of manway, welding can be performed from inside so your outside root matches.

According to a document I have from Bethlehem Steel, typically 1650F - 1700F.

I believe termites are adverse to pressure treated lumber. I think the treaing chemical is Copper II Sulphate.

No, it is not atmospheric pressure. When we talk about external pressure, we are usually implying a "negative internal" pressure, and is used to describe the effect of the vessel contents experiencing a very instantaneous change of state (liquid to gas). The rapid forming and evacuation of the...