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Recent content by LittleInch

  1. LittleInch

    Air India 787 crashes on take off

    But what was the Original failure? Ï I've seen that the badly burnt front unit was henning sent to NTSB in the UD as this might have data after the assumed dual engine shutdown.
  2. LittleInch

    Titan sub noise heard on board support ship.

    There are unfortunately too many people who decide that employment or payment for a contract is worth the low risk that anyone will actually hold you to account for sighing off things that they don't actually believe in. It's only in late years that I've had to do this a few times and held my...
  3. LittleInch

    Compensating pressure in Cryogenic Storage Tank

    Your finned HX is going to build an ice block on it pretty fast. I've said we can't check your calculation because you haven't given us enough information, specifically the volume of the vessel and what percent full it is at 300 tons. Liquid CO2 follows the saturated vapour line so as you do...
  4. LittleInch

    Compensating pressure in Cryogenic Storage Tank

    If you have a 300 ton tank and remove 20 tons from it and the pressure drops from 15 bara to 6 bara, then the initial volume for the vapour must be minute - You have filled your tank too high.
  5. LittleInch

    MAWP certification

    It is very unlikely that any product which contains pressure above a very low pressure will be able to be used without a pressure test. And probably no one would buy it without such certification. what's a 2oo2 manifold? 2oo2 usually refers to the number of elements in a control loop but...
  6. LittleInch

    Turning houses into boats...???

    Good. This thread started off quite reasonably, but somehow went south very fast.
  7. LittleInch

    Bored, cased pipe cathodic protection

    Wow, 350C! If you bury something anything over about 85 to 90 c starts causing huge problems. If this is a pipe wrapped or covered in some sort of insulation sitting with an annulus of a few mm inside a casing and the casing is pretty straight it might work, but you will be getting a whole lot...
  8. LittleInch

    Bored, cased pipe cathodic protection

    Well 50mm of insulation isn't going to work to any decent extent and you will lose a lot of heat and heat up the ground a lot, not to mention the thermal expansion of both the inner pipe and the casing. What's the temp of the 500 psi steam? CP of a 200m long line is prob ok with sacrificial...
  9. LittleInch

    Compensating pressure in Cryogenic Storage Tank

    The pressure drop is relative to the volumes of the liquid and the gas phase. You don't say what that is so no one can work this out. You really don't want to get to the triple point as it can go solid on you. You can't just shove in gas and expect tit to liquify it without cooling it. You...
  10. LittleInch

    Air India 787 crashes on take off

    I've been on that page for a while now as well.
  11. LittleInch

    Turning houses into boats...???

    I can see you're new and young, but this behaviour and language is not tolerated or accepted on this site. Please consider your posts and delete / edit as required. If engineers cannot converse in a civil manner then no one can. you respond to comments with arguments and alternative opinions...
  12. LittleInch

    Subject: Dyke Wall Capacity Criteria as per NFPA/OGRA – Class-wise Tank Scenarios in General Plot Plan

    That's a decent summary I think. NFPA is the minimum and is generally exceeded to allow for sloshing and waves if indeed it ever happened. The consequence of bund failure or overtopping if further tanks collapse in the event of a fire from the biggest one ( think rivers of fire!) often cause...
  13. LittleInch

    Air India 787 crashes on take off

    Gear up would start two fairly decent sized hydraulic pumps apprently and hence may have tripped some major electrical system leading to an unintended consequence. Maybe. That particular plane looks to have had a chequered history and was used for spares for a while reportedly, plus issue on...
  14. LittleInch

    FIU Bridge Update - New Bridge Has Broken Ground

    That will be a pedestrian bridge two people wide with supports every 40 or 50ft. This is close to a road bridge with a significant span, plus two sets of lifts either end. They will be $2M each without any effort.
  15. LittleInch

    Air India 787 crashes on take off

    That was ASL. The runway is at about 200ft and when you scale the video they reckon it was about 300 ft. But it wasn't the last minute. The silence from the investigators is very worrying. Tends to imply the have no smoking gun or the data just stops when the engines stop but they can't work...
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