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Why does typical ASME section 8 div 1 code nameplate use psig instead of psi for design pressure and external pressure?

Is Positive material identification ever done on Carbon Steels like SA-516-70? I normally see it done on Stainless Steel material.

Is ferrite test of Austenitic stainless steel done before and after welding or just after? What is the optimal ferrite so as to avoid cracking.

Can anyone recommend good books for the design of Stainless Steel(particularly 304L/316L) - Annealing, pickling , passivating, service material requirements ( i.e. NACE MR0175) , hydro test ( max chlorides), proper bolting selection, paint, etc. Thanks

What paperwork/nameplate issues would there be if an ASME Section VIII div 1 vessel was fabricated up to hydro in one shop and sent to another shop to have paint and other finishing touches done. Both shops are company owned, one in Mexico , the finishing touches shop in the US.

I am looking into the design of Stainless Steel (304L/316L)for pressure vessels under the ASME Section VIII division 1 code. I am looking for good reference books that deal with solution annealing, pickling, passivation, welding, various process conditions (sour service etc)hydro test (max ppm...

Has anyone had any problems using vegetable oil as a rust preventative in a pressure vessel with hydrocarbon liquids?

I had a customer who stated that the 2:1 elliptical head min was governed by the straight flange min. The Knuckle min is less than the straight flange min. for example, the head nom is 1.25" thick. the straight flange min is 1.117". The head knuckle min is 0.89". Customer states that the...

Can a 2 piece head welded with a stress relieve weld procedure be welded to a vessel with a non stress weld procedure? Vessel will not be stress relieved.

can you claim the nozzle drop in the 90 degree plane with nozzle in cylindrical shell? inside projection h= nozzle drop for square cut nozzle.

Is ASME SA-516-70 Normalized material considered low alloy steel?

Job Purchase order was placed in year 2013. Job shipped in 2014. Code nameplate was stamped year 2013. AI wants nameplate stamped 2014 since job shipped in 2014. any code paragraph to back up stamping year 2013?

DOES DIV 2 REQUIRE THAT THE SPLIT PAD WELD SEAM BE FULL PEN AND ORIENTED GREATER THAN 45 DEG TO LONG SEAM LIKE DIV 1 FOR JE OF 1?

Where in code does it state the maximum and minimum weld bevel size for head/shell, flange/pipe, and pipe /shell bevels?

I have a job that was sold at a time when the 2010 edition A11 addenda was in force. The 2013 code is in place now. Drawings and calculations still show 2010 edition A11 addenda . What is code justification for this? I have always followed job through with code that it was sold under. Thanks.

Can anyone recommend a good Pressure Vessel estimating software?

Pressure vessel hand book lists the Thermal expansion for anchor bolts dimension as "a". Seems to me, Delta_L= L* Delta_T* Expansion coeff equation is closer to a/2 dimension listed. Any advice how to make sure anchor bolt saddle slots are long enough to handle thermal expansion and...

What is required postweld heat treat hold times and max and min hold temp?

Can anyone help to explain the differences between RT-2 and RT-4. When would the different RT methods be used. What will JE be in each case? Thanks.