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Wondering what the closest ASTM Equivalent would be to BS4360 Grade 43A. Is it ASTM A36 as I have seen suggested in other online information ? Thanks. Jon Ives Alberta Canada Jonathan Ives Plant Engineering Supervisor Transalta Centralia Operations

Looking for some feedback / reviews of Beck Group 29 Linear Valve Actuators for modulating control (globe) valve service. I am considering these for installation on power plant Desuperheater spray flow control valves, to replace existing Limitorque actuators. I am also looking at using piston...

I'm not worried about flange stress. The problem here is that the bolt material on the existing flange is unknown. PMI testing indicated that the closest match was A193 B16. So I assumed 85,000 yield strength for the bolts to be on the safe side. Then I calculated the load on the bolts from...

I have a question on bolt pre-load for an ASME B31.1 Code pipe flange joint. Should the total load on a bolt in the joint, including applied load from pipe internal pressure and pre-load, NOT exeed the allowable stress of the bolt material at temperature ? Or can total bolt load be safely...

What I am asking, is would it be possible to "stub-in" to a 4" x 3" reducer with a 2" pipe ? The application is water at up to 180 F and 170 psi on Standard Weight A234 fitting Jonathan Ives Project Engineer Transalta, Alberta Thermal Plants Duffield, Alberta

I'm in the process of designing some piping modifications for a replacement pump. I'm somewhat limited, in the vertical dimension, for my discharge pipe and fittings. Is it possible to weld a 2" pipe into the side of a A234 WPB 4" x 3" reducer without sacrificing the integrity of the reducer...

I'll be setting up a 1000 US Gallon, Anhydrous Ammonia Storage Tank. I am looking for some tips on setting up a water spray nozzle system to abate an ammonia vapor cloud in the (unlikely) event of a major leak or tank rupture. Any ideas or experience with this out there ? Jonathan Ives...

Thanks for the quick feedback. The repairs will be made on the shell of a high-pressure feedwater heater. The shell will see boiler water at up to 160 psi, so I think we'll PWHT the repair welds to avoid stress-corrosion cracking. Jonathan Ives Project Engineer Transalta, Alberta Thermal...

Anyone have any guidance on the following: We are going to cut out and then replace a section of shell from a pressure vessel. Shell material is SA 516 Gr. 70. Shell thickness is 3/4". MAWP of shell is 160 psig. Shell inside diameter is approximately 62". Fluid in shell is treated boiler...

On our site we have a pug-mill type mixer which is used to mix fine, dry fly-ash from coal-fired boilers with water. The flyash and water is mixed into a coarse paste in the pug-mill and then dumps from the pug-mill into a haul-truck. The pug-mill is supposed to be "dustless" in that no dust...

Also try WWW.FREECALC.COM, there is some good free software there for doing piping friction loss calculations. As far as determinging friction loss for Slurries, you might want to contact Svedala. In the past, I used a book that they produced which highlights friction factors for slurry...

I am wondering if anyone out there knows, generally, what the depth of the frost line is in the Edmonton area. I am assuming that I can bury a raw water pipeline 8 feet below ground, and the water in the line will not freeze.