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Recent content by garfio

  1. garfio

    Definition of "user" under code

    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...
  2. garfio

    Discharge pipe for relief valves

    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...
  3. garfio

    Waste heat recovery from turbine exhaust - multiple turbines

    no selections so far,but this same temps has been handled before in other projects (about 1000F)
  4. garfio

    Waste heat recovery from turbine exhaust - multiple turbines

    One turbine is at 50% plant turndown, so heat load reduced accordingly.
  5. garfio

    Waste heat recovery from turbine exhaust - multiple turbines

    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.
  6. garfio

    Waste heat recovery from turbine exhaust - multiple turbines

    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...
  7. garfio

    Solution for turbine nozzle load restrictions

    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...
  8. garfio

    Allowable loads for turbines - NEMA SM-23

    Anybody has a comment?
  9. garfio

    Allowable loads for turbines - NEMA SM-23

    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
  10. garfio

    Selection of low friction supports

    Any comment on rollers?
  11. garfio

    Design conditions for pipe before PSV

    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...
  12. garfio

    Selection of low friction supports

    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...
  13. garfio

    Piping Loads on steam turbine

    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...
  14. garfio

    Questions for Pipepak users

    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...
  15. garfio

    piping for superheated steam

    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?
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