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  • Users: JLSeagull
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  1. JLSeagull

    Steam - fire case allowable overpressure

    I am not looking at a fired heater or fired boiler, just a steam containing vessel application in a process unit. What percentage overpressure is allowable for a steam vessel for a fire case? I have peaked around in API RP 520, API STD 521 and some of the ASME standards. Which standard...
  2. JLSeagull

    Building gas flow restriction settings

    Please review gas flow restriction question in the HVAC forum. http://eng-tips.com/viewthread.cfm?qid=268672&page=1
  3. JLSeagull

    Building Gas Flow Restrictions

    In the hydrocarbon processing industry we normally package online analyzers in an environmentally controlled non occupied building. Typically we apply flow restrictions for the carrier gas etc. entering the analyzer shelters. These restrictions can be set to limit the flow but the criteria for...
  4. JLSeagull

    Helicopter Underwater Egress Training

    http://www.chron.com/disp/story.mpl/business/energy/6876543.html# I made several trips offshore before going on a rotation for two-years in Mexico. Many in the hookup and commissioning group had worked in the North Sea. The logistics included a mix of crew boat and helicopter transportation...
  5. JLSeagull

    From University Degrees to Diploma Mills

    I see ads from universities that I don’t recognize from thirty years ago. Some may be good, some not. Where do places like Phoenix University etc. fit in the grand scheme? We have many prestigious universities within the United States. On one end are accredited colleges (state universities...
  6. JLSeagull

    Copper bearing alloys

    I often see a phrase in piping specifications etc. such as "no copper bearing alloys". This is typically associated with processes that contain stuff that reacts with copper such as various type amines, acetylene, etc. What does "copper bearing alloy" mean to you? Does this mean that valves...
  7. JLSeagull

    New evaporator coil on R-22 system

    With a home AC problem I was advised that the evaporator coil has a leak and that I lost all refrigerant. My condenser unit is about eight years old. Can I replace the coil with one rated for the R-410 pressure and not change metering valves etc. thus keep my R-22 system for a few more years...
  8. JLSeagull

    NFPA 70-2008 Now Effective

    The National Electrical Code 2008 Edition is now available with an effective date of 15 August 2007 and supersedes all previous editions.
  9. JLSeagull

    A 201 Gr. B FBX ??

    I have old P&ID's that reflect spherical tanks marked A-201-GR.B FBX. These spheres handle mixed C4 hydrocarbons. I don't find A 201 in ASTM or ASME. I don't know what FBX is. If this is an old ASTM it does not show up in my searches. What material is this; what typographical error might...
  10. JLSeagull

    Enclosure temperature protection

    Occasionally projects require equipment to be installed in environments outside the manufacturers’ specifications. Typically I select solid-state Peltier type units. My client may want a refrigerant based cooler. The current heating / cooling device requires hazardous classifications such as...
  11. JLSeagull

    Enclosure Thermal Protection

    Occasionally projects require electronic equipment to be installed in environments outside the manufacturers’ specifications. Sometimes these heating / cooling devices require hazardous classifications such as Class I Division 2. A few units are available from a few manufacturers. The last...
  12. JLSeagull

    Vessel, why, when or not?

    Sometimes people cheat. I have seen a few examples where it was obvious that an application was more than enlarged piece of pipe. For reasons not clear, project or mechanical engineers did not assign an equipment number, provide relief valves, etc. calling something a run of pipe – that...
  13. JLSeagull

    Cryogenic Installation Methods

    One topic posted pertains to flow measurement in a cold flare line. Many new measurement technologies exist that eliminate problems within industry. However, plants have implemented many installations in cold service where the instrumentation is not rated for the temperature. Most engineers...
  14. JLSeagull

    Ethanol production

    The press speaks of agricultural methanol as a solution for our energy dependence. What is the yield in terms of volume of ethanol per bushel of corn? What energy is required to process corn to ethanol? What is the likelyhood that ethanol from corn could replace significant portions of the...
  15. JLSeagull

    PE - Multiple Office Project Execution

    Many large engineering firms utilize people working from multiple locations. These often include staff in third-world countries to implement detailed engineering with oversight from the home-office engineers. Even small firms may utilize engineers with home office situations and use...
  16. JLSeagull

    Ethanol from Corn

    What is the yield in terms of volume of ethanol per bushel of corn? I found an old link related to corn waste but the links posted are no longer good. http://www.eng-tips.com/viewthread.cfm?qid=78108&page=1

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