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  • Users: Miyazaki
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  1. Miyazaki

    Inert gas flow calculation error

    Hello Members, My query is related to the inert gas flow calculation error, while running the calculation I got an error as "Iteration not successful". Can anyone guide me on how to tackle this? and may I know what exactly this error signifies?
  2. Miyazaki

    Firewater tank capacity.

    Hello Members, Could anyone please guide me in considering the exact size of a firewater tank, as per my calc the min storage capacity is 227.10m3 (60,000 gals). My concern is don't we need to consider some clearance for the PRV line, test line and some clearance for the water overflow. As per...
  3. Miyazaki

    Probe type heat detection for outdoor transformer

    Hello Members, For a substation project, our client demands probe-type heat detection and fusible bulb (sprinklers/QBD) detection for the transformer. Could anyone please guide me on how to design this probe type heat detection for an outdoor transformer? I couldn't get much info from the...
  4. Miyazaki

    Expansion Joints for inert gas piping

    Hello everyone, Has anyone come across expansion joints for inert gas piping?? Can anyone please share some data such as positioning the expansion joints, vendor info etc.
  5. Miyazaki

    Water demand Calculation for sprinkler system and Standpipe system with separate risers

    Hello All, I am a bit confused while calculating water demand for sprinklers and standpipe system which has separate risers, do I need to calculate both demands (standpipe & sprinkler) separately and add both demands? Because only in combined system NFPA 13 & 14 says to consider the largest...
  6. Miyazaki

    Reducer Bush Fitting for Inert gas agent piping

    Hi All, Could anyone please advise whether a reducer bush is allowed in inert gas piping because for halocarbons in most of the manufacturer manuals reducer bush is not recommended, this data I couldn't find in the inert gas manuals. Can anyone please share with me some references stating why...
  7. Miyazaki

    Mill tolerance for ASME B31.1

    Is it mandatory to consider mill tolerance in 31.1 piping?

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