Hi
I am trying to understand the responsibility of my EPC firm with respect to the obligations in the code. I found the use of the word "user" to define obligations, and looking at appendix NN, there is a sort of definition and even examples of how to interpret the obligations.
However, it...
A relief valve is installed at the discharge of an amine pump (set at approx. 1,000 psig) and the valve discharges to the pump suction line (approx. 50 psig). The discharge piping has been assembled in such a way that the line raises a few feet before connecting to the suction line on the top...
Thanks for all the answers. Turbines are Taurus 70, and there is no steam system. This is not an expansion but a new plant about to be built. WHRU is an addition being analyzed to replace a oil heater.
A client wants to recover heat from the exhaust of two turbines to heat oil. The units drive compressors and will be normally running at a high load rate, although there are chances that only 1 turbine be running.
Normally I've seen one WHRU per turbine, but there is a suggestion to use a...
Turbine nozzles per NEMA SM-23 have very low allowable loads. Although the preferred solution is to obtain enough flexibility with the piping, I believe that there are cases where this solution is not possible, and expansion joints have to be used.
I would like to here people's experience...
In order to satisfy NEMA SM-23 requirements for maximum external loads on turbines, should the NEMA loads be compared to the piping loads under "normal" operating conditions, or should they be also satisfied under occasional loads scenario, for example, PSV relief?
Thanks
I am not sure that this is the right forum for my question, so direct me to the right one if its not.
I have a steam pressure reducing stations that includes a block valve, an emergency valve a pressure control valve and a safety valve. The pipe segment between the discharge of the pressure...
I would like some guidance regarding the selection of low friction supports: I need supports for a steam lines (800 F, from 6" to 20") to be mounted on a pipe rack, and I am looking at rollers and shoes with low-friction pads. I found that for both types, the manufacturers recommend friction...
I need to check the loads imposed by piping to a steam turbine. The turbine manufacturer has provided the allowable loads per NEMA SM-23. A quick look to these allowable loads shows that one of the constraints is that the resultant force at the turbine inlet shall not exceed 500 lbs.
Being a...
Algor pipepak tables includes the flange width and valve length, but it seems that neither are used by the program:
- Flanges are considered a weight applied in the node.
- Valve lengths are drawn based on the length defined for the segment.
Anybody knows if the program uses the tabulated...
All comments are very interesting, thanks. Any additional comment about the use of vertical loops? Will they be ok if drip legs and/or traps are included?
Thanks for the prompt answer.
I wrote "anchor" to define my general question (worst case). Linestops and guides are also possible, but in any case there will always be forces transferred to the structure.
In this particular project, the output from the stress analysis will produce the...
I would like to know what is the common practice followed in modeling anchors located on pipe racks: Are the anchors normally model with a stiffness less than "rigid" to represent the deflection that the structural steel will suffer under the loads or they are modeled as "rigid"? What values of...
I have 3 interrelated questions about superheated steam piping:
1) Good piping practice for saturated steam is to connect the branches on top of the headers. However, considering that in superheated steam lines there is not condensate, is this also a recommended practice or connections can be...
