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  1. babyyoda

    What are the Detail standards of Venting and Draining of systems?

    What type of gas? What is your pressure of the pipe line? There are several codes which deal with pressurized piping. Some codes are specific to gases - venting Hydrogen, or codes on natural gas. There are also codes which are specific to the area of the world you are designing in, or to the...
  2. babyyoda

    Cyrogenic tanks for hydrogen gas

    I am familar with compressed gas storage, but have no experience with cyrogenic storage. What process equipment will my facility require to liquify the hydrogen gas? How do I equate the amount of hydrogen gas to storage to the volume of the tank? Any advice would be appreicated. Thank you
  3. babyyoda

    Deionized Water

    DI water is highly corrosive at 18 mega-ohm. It will attack most metals including Stainless Steel. It is safe to the human skin, but if you wished to drink it I doubt it would taste very good. From my experience, when plumbing DI water use 316L SS, which has been chemically protected...
  4. babyyoda

    cyrogenic tanks for Hydrogen

    I am very familar with compressed hydrogen storage tanks, but have no experience with cyrogenic tanks. What type of equipment will my facility require to liquify hydrogen? How do I equate the volume of H20 to the required volume of gaseous hydrogen storage. Any advice would be appreciated. Thanks
  5. babyyoda

    600VAC vs 120VAC design concerns

    Hi All, Again thanks for the useful information, and for confirming my suspicions. Let me clarify that equipment is a remote stand alone unit (a mini industrial gas plant) which will receive 600VAC from an outside power supply. I agree with Buzzp that 24VDC is wise choice for safety...
  6. babyyoda

    600VAC vs 120VAC design concerns

    Thank you for all the useful information. Yes, I can locate 575V/3/60Hz for both motors. The 24VDC instrumentation are process switches, solenoid valves etc. Which I can also locate. All the motors, instrumentation have been ordered and received at 120V/60Hz. Also the electrical engineer has...
  7. babyyoda

    600VAC vs 120VAC design concerns

    My question is the following. I have a 600VAC/3/60Hz supply. Originally the motors and instrumentation where specified as 120V/1/60Hz. However the electrical designer is stating that the design will only have 600VAC and 24VDC. How is the 24VDC supply generated from 600VAC? Why would you...
  8. babyyoda

    Emailing Project schedule (Gannt) to others w/o MS Project.

    Hi, When I send an email of a document; which I don't want modified, or the receiver does not have the program, I will PDF the file. On my system, I go to print the file, then select print PDF. It will prompt me for a new file name, and saves it with the PDF extension. The software I have is...
  9. babyyoda

    Theory of Analyzers

    How does a thermal conductivity sensor work vs an electrochemical fuel cell sensor vs a catalytic bead sensor? thank you/ Babyyoda
  10. babyyoda

    Alternative work schedule (9/80)

    Hi Matthew, I gave it a try. Any you are right, if you enter the duration as 3 days it calculates 24 hours. However, if you enter the duration in hours (27 h), it shows the proper time frame. If I find a better way I will let you know. Babyyoda
  11. babyyoda

    Baselines

    I understand the concept of the baseline. But I have never been able to get the baseline to work. In general, I update all my tasks using the tracking tool, and then view the tracking gantt chart, but I do not see my original estimates. Do I do this with a baseline?
  12. babyyoda

    Alternative work schedule (9/80)

    You have setup the calendar correctly for your resources, and have each resources using that given calendar. Check the following two spots which will be utilized to calculate the time duration for task. On the your gantt chart highlight the desired task. Double click in the grey area and a...
  13. babyyoda

    open to the atmosphere vessels

    Hi, My first question would be do you have access to a chemical engineer? Rate of evaporation/condensation calculations are usually one of their specialties. Second, my experience with caustic and HCL would be manufacturing plastic tanks. Lots of plastic tank suppliers will be willing to add...
  14. babyyoda

    Examples of "good" engineering program management?

    In agreement with yourself, I find it frustrating and annoying when an individual is called a Project Engineer or Program Manager. It seems to be buzz word for the masses, as everyone wishes to be a leader..... Do a web search for PMI or Program Management Institute. This an organization...
  15. babyyoda

    deionized water and bronze compatibility

    I have been told that brass or bronze is compatible with deionized water (18 mohm). Since I have experienced rusting on 316SS, I disbelieve this statement. Can anyone provide some assistance or resources to confirm the above the statement. Thank you. Babyyoda
  16. babyyoda

    pressure vessel code VIII

    I have been told that a vessel is not considered a pressure vessel if one of the following conditions is met. 1. its inner diameter is less than 6" 2. its internal volume is less than 1.5 ft3. 3. the maximum allowable working pressure is 15 psig. Can someone advise if this is true...
  17. babyyoda

    ansi to Din

    A few months ago, I was searching for the differences between ASME, ANSI, DIN and ISO codes. My understanding is that there is joint effort to make a global standard under the ISO group, of which ASME makes up roughly 90%. The new codes would be a callobration between all the different codes...
  18. babyyoda

    what is the difference between ISO, ISA, DIN and EN standards

    I have been asked to determine which set of standards would be the best to utilitize for properly identifying equipment, instrumentation and valves on a process flow diagram. In North America it is common to follow ISA. However ISA is 90% of the technical committee for ISO. Also I read that...

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