We are evaluating a fuel gas system and end users (gas turbines) for the possibility of having an increase in the H2S level of the fuel gas (sweet natural gas after dehydration) from zero to 2-3 ppm. Although the concentrations are below NACE levels at maximum allowable operating pressures...
Any advice/sources of information for welding 25 Cr SD pipe (UNS 32750/32760)?
Also, has anyone ever used this material under ANSI B31.3, Chapter IX rules (High Pressure Piping)?
Thanks in advance!
Is there a general equation (empirical, theoretical or rule of thumb) that relates power loss and transmission voltage?
My specific problem: I want to transmit 15 MW approximately 2 miles via a subsea cable. Should I use step up transformers to go from say, 4.16 to 13.8 kV or transmit at 4.16...
Our current specifications call for Si-Br nuts made out of ASTM Alloy 651 (UNS 65100) per ASTM F467. Per ASTM, the nuts must be cold formed and have a minimum hardness of 75 Rockwell B. We were told by our supplier and the leading manufacturer that we are the only entity that requires these type...
Our current specifications call for Si-Br nuts made out of ASTM Alloy 651 (UNS 65100) per ASTM F467. Per ASTM, the nuts must be cold formed and have a minimum hardness of 75 Rockwell B. We were told by our supplier and the leading manufacturer that we are the only entity that requires these type...
How would I calculate the total reliability of 3 x 50% pumps in parallel, assuming each pump has an individual relabilty of 95%? Only 2 pumps max can operate at the same time.
Thanks!
Flangeheads:
Does anyone know where I can get dimensions and weights for API 10,000 lb flanges (up to 16" if API goes that high) on-line or some other "free" source?
Thanks!
I would like to use Chapter 9 to design some facility piping consisting of some large diameter - 12.75" OD high pressure applications - 8000 psig. The operating temperature is ambient - 30 - 95 deg F and I can calculate thermal, weight and prssure stresses with available software. Other...
