Tanker Newbie

Discussion in 'Tanker, Bulk and Dump Trucking Forum' started by TakinItEasy, Jan 16, 2017.

Page 13 of 15
  1. Apr 16, 2017 #121
    wsyrob

    wsyrob Trucker Forum STAFF Staff Member

    5,769
    5,463
    Sep 14, 2007
    Winston Salem
    0
    Chemical tanks have pressure release valves as well. They use a magnet to create the seal. At around 40lbs of pressure it opens and vents off the excess pressure. I imagine your system is much higher.
     
    wsyrob, Apr 16, 2017
    wsyrob, Apr 16, 2017
    #121
    Cali kid Thanks this.
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Apr 16, 2017 #122
    kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

    11,025
    48,157
    Jan 13, 2013
    SW Arkansas
    0
    The valves on newer trailers will not release any amount of vacuum. It only releases after it get to a certain point to protect the trailer integrity.
     
    kemosabi49, Apr 16, 2017
    kemosabi49, Apr 16, 2017
    #122
    Cali kid Thanks this.
  4. Apr 17, 2017 #123
    ChicagoJohn

    ChicagoJohn Road Train Member

    2,392
    2,759
    Jan 14, 2016
    Chicago
    0
    But that's designed for internal pressure. I.e. And air offload, not for pump offload. The valve will only show pressure to escape out-of-pocket not allow air in.
     
    ChicagoJohn, Apr 17, 2017
    ChicagoJohn, Apr 17, 2017
    #123
    Cali kid Thanks this.
  5. Apr 17, 2017 #124
    wsyrob

    wsyrob Trucker Forum STAFF Staff Member

    5,769
    5,463
    Sep 14, 2007
    Winston Salem
    0
    Exactly.

    I was replying to Cali Kids comment about cryo gas tanks. They deal with much higher pressures and probably never have a vacuum state in the tank. I imagine introducing air into a hydrogen load would not be a good thing. Having a similar automatic system to release negative tank pressure probably isn't a good idea.
     
    wsyrob, Apr 17, 2017
    wsyrob, Apr 17, 2017
    #124
    ChicagoJohn Thanks this.
  7. Apr 17, 2017 #125
    Cali kid

    Cali kid Road Train Member

    1,804
    2,548
    Feb 15, 2011
    IE, CA
    0
    Yes cryo tanks should never be in a vacuum state due to contamination. LIN,LOX,LAR trailers have surprisingly low set safeties, first is at 44ish psi that's a spring type diaphragm. The 2nd is a rupture disc which is around 55ish psi. Now hydrogen, which I haven't been trained on yet has both low and high pressure trailers, so that's a different animal all together.
     
    Cali kid, Apr 17, 2017
    Cali kid, Apr 17, 2017
    #125
    ChicagoJohn and wsyrob Thank this.
  8. Apr 17, 2017 #126
    wsyrob

    wsyrob Trucker Forum STAFF Staff Member

    5,769
    5,463
    Sep 14, 2007
    Winston Salem
    0
    That is lower pressure than I would have thought.
     
    wsyrob, Apr 17, 2017
    wsyrob, Apr 17, 2017
    #126
    G13Tomcat Thanks this.
  9. Apr 17, 2017 #127
    Cali kid

    Cali kid Road Train Member

    1,804
    2,548
    Feb 15, 2011
    IE, CA
    0
    The reason being is that the tank pressure is only to feed the pump. The pump itself is what adds the pressure to the line, which can be up to 400 psi.
     
    Cali kid, Apr 17, 2017
    Cali kid, Apr 17, 2017
    #127
    wsyrob and G13Tomcat Thank this.
  10. May 1, 2017 #128
    TakinItEasy

    TakinItEasy Medium Load Member

    360
    291
    Dec 27, 2012
    OKC, OK
    0
    Well guys I may not be pulling tanks much longer. I have a job opportunity pulling rgn,flats,steps etc..... For a local company getting 30% of the load with full benefits and its based locally where I live. I'm at a crossroads of staying here and doing my year or moving on.
     
    TakinItEasy, May 1, 2017
    TakinItEasy, May 1, 2017
    #128
    G13Tomcat, ChicagoJohn and slim shady Thank this.
  11. May 1, 2017 #129
    ChicagoJohn

    ChicagoJohn Road Train Member

    2,392
    2,759
    Jan 14, 2016
    Chicago
    0
    Ah....... That's an easy one for me, but you need to decide what's important to you. I wasn't wild about the home everyday, but if your local and make good money, sounds like an easy choice to me.

    RGN positions don't come up very often and I believe the money is better.
     
    ChicagoJohn, May 1, 2017
    ChicagoJohn, May 1, 2017
    #129
    TakinItEasy Thanks this.
  12. May 2, 2017 #130
    TakinItEasy

    TakinItEasy Medium Load Member

    360
    291
    Dec 27, 2012
    OKC, OK
    0
    My only real complaint with my current company is the pay. They start you out at a low cpm and say the load/unload pay will help it, but that's not true. Also there are no raises
     
    TakinItEasy, May 2, 2017
    TakinItEasy, May 2, 2017
    #130
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

    • Page 13 of 15