Download Applying the ASME codes : plant piping and pressure vessels by Wingate, James A PDF

By Wingate, James A

Folllowing the luck of his first e-book with regards to Hydraulics, Pipe movement, commercial HVAC & software platforms, Mister Mech Mentor now deals an all-new, easy-to-read number of chapters that includes ASME Piping & strain Vessel Code functions. Written in a pleasant variety, this e-book offers the fundamental merits of guide through a private mentor who explains why and the way, whereas instructing in all probability risky classes in physics and engineering layout. Spared the embarrassment of painful errors, either early-career and skilled engineers will achieve sensible wisdom from frank, colourful situations and discover ways to clear up various mechanical difficulties, together with: Pipe rigidity & pressure Structural helps strain Vessels Jacketed Pipes Bellows-Type enlargement Joints approach Piping

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The reactions are just too large! This may be a good point to interject one last thought: our simple examples included no earthquake loads. 4 gs of earthquake side sway force, we would have to be concerned with trading off horizontal gaps between pipe and lateral restraints, to allow adequate horizontal-direction thermal growth, and lateral rigidity to avoid overstress due to the occasional earthquake loads. This can get very hairy, and so I left it out of our examples on purpose. (The examples’ pipe routing geometry are based on a large hydronic system which went into a microelectronics plant in Ireland, which is an earthquake zone zero site.

Which can result when excessive pipe loads warp the pump connection nozzles. One should always check this out for safety’s sake. Excessive pipe loads can and do cause pump mechanical failure!! We can minimize these pipe loads on terminal equipment by judicious selection of the spring constants of those hangers at Nodes 50 and 80. The pipe stress program makes it easy; all one has to do is to include the command ANCHOR,REL in the input keyword string for Node 5, and the computer will do the necessary trial & error calcs for sizing the springs appropriately.

Pipe Reaction on Terminal Equipment Pipe Reaction on Terminal Equipment The Summary, Table 3-1, taken from the same section of the report, shows a vertical load of −1,105 lb (downward on the heat exchanger) at Node 5 for this support scheme, and a negligible 172 lb horizontal load there. The moments impressed on the H/X flange are also shown: 3,258 ft-lb. about the vertical axis, and 1,397 net ft-lb. in the vector resultant vertical plane. While these pipe reaction forces and moments would present no stress difficulty to a rugged shell and tube TEMA heat The Summary of Pipe Reactions shows that for Scheme #2 the vertical load has been reduced from the original −1,105 lb (downward on the heat exchanger) at Node 5 to only −500 lb, and no change in the negligible 173-lb, horizontal load there.

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