Intersection SIF question 1

[KernOily]

OK I should know the answer to this, but...

How would you fellers consider the SIF to be calculated for a socketweld tee? If you look in Appendix D, a SW tee does not really fit into any of the classifications there. A SW tee is B16.11, not B16.9.

Thanks!
Pete

Thanks!
Pete

 

[unclesyd]

Check about 2/3 down the page in technical papers and there is on Socket Welds that migh be of assistance. There is a Phase I but I haven't been able to find it.

http://structint.com/tekbrefs/

 

[NozzleTwister]

If you are using B31.3, remember also that you have SIFs at every socket-weld in your system whether it's a tee or not.

NozzleTwister
Houston, Texas

 

[KernOily]

NozzleTwister - Can you please cite a code section for this? I can't seem to find it.

Thanks!
Pete

 

[DSB123]

74Elsinore,
Have a look at second table in Table D-300 which gives SIF's for fillet welds (socket welded fittings).

 

[T5580]

What code are you using? If you are using B31.1, SIF value is listed on Appendix D, table D-1 under Fillet weld.

 

[KernOily]

Ugh, I found it. Embarrassing. I was only looking at the intersection table. Of course it was right below. If it was a snake it would'a bit me. I am using 31.3. Thanks guys!

Thanks!
Pete

 

[LSThill]

New Code Documents:

SIF Testing -B31J –procedures to develop stress intensification factors for piping components by fatigue testing