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  • Users: SamChem
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  1. SamChem

    Abbreviated Chem Names - What is 22-Mbutane?

    I have never used Hysys. I am attempting to decode a material balance generated with Hysys, however, and some of the chemical names are throwing me a little. What is 22-mbutane? How about 23-mbutane? This is probably just something simple. I know butane itself only has two isomers, and I've...
  2. SamChem

    Another Degree? If So, Which One?

    Should I get a masters degree to tack onto a B.S.? A masters in Industrial Hygiene is available very locally, about 7 miles from my home - and an MBA or a masters in Chemical Engineering is available further away, toward downtown Houston from UH. I'm a chemical engineer who has worked in...
  3. SamChem

    Horns on the PRVs?

    In a petrochemical plant I'm working at, there are a number of vessels topped with PRVs. Besides the main relief line, the top of the PRV also has a small elbow fitting, usually pointed downward, usually bigger at the exit than the connection to the body of the valve. What is this piece for or...
  4. SamChem

    Individual, Actual Leakage Rates?

    Is there an instrument for quantifying in the field the actual rate loss of all individual components? I have this possibility, but this analyzer is very expensive: http://www.heathus.com/specs/hiflowsampler.pdf Anyone know of a better way to put objective, money-lost numbers to leakage rates...
  5. SamChem

    How Much is Leaking Out?

    I've done the keyword search; no dice. What I need is the 1) safest, and 2) cheapest way to determine the actual volume over time from fugitive emission sources such as valves, PRVs, flanges, et al in the field with an intrinsically safe instrument. So far, the only thing I've found near what I...

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