Recent content by matt222

  1. M

    Welcome to the PWR 1000MWe SBO TD AFW Q&A

    Hello everyone, I would like to ask you question related to PWR 1000MWe, in the event of Station Black Out SBO there is a safety system called TD AFW to supply steam generator with enough water so that can remove the heat from the primary side indirect way as a heat sink. My question...
  2. M

    What happens if the pressure in a pressurizer exceeds 15MPa?

    yes I know about this limits in the pressure, so is that mean the reactor vessel would melt down if the pressure of the pressurizer went beyond 20Mpa or so
  3. M

    What happens if the pressure in a pressurizer exceeds 15MPa?

    I have question regarding the pressure of the pressurizer, for PWR the primary pressure is around 15MPa, what will happen if the pressure increase beyond 15MPa let's say around 20 to 50 MPa, in the case of station black out, in my point of view this due to loss of heat sink, what scenario migh...
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    Station Blackout: Q&A on Causes and Effects

    I have Q regarding station blackout, the causes of it complete loss of Onsite and offsite power. However if there is no make up what is happening exactly before core damage by steps
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    Large early release frequency LERF

    I would like to ask you about large early release frequency LERF from the study of PSA how to calculate it? Its based on the amount and types of radio active being released to the atmoshpere from the reactor core accident, but is there any simple way I mean any factor to simply convert the core...
  6. M

    Solve Elastic Scattering: T, Zr & E(initial)

    Yes this is the trick now! we need to find the minimum energy (in eV) of the neutron to displace two Zr in a row what i can do is as follow: total incident neutron energy is equal E, transferred energy to the target is T, neutron energy after scattering is Q, so that totat energy is ...
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    Solve Elastic Scattering: T, Zr & E(initial)

    Homework Statement Homework Equations T=2*(m*M/(m+M)^2)*E(initial)*(1-cos(angle)), T is transferred energy from the neutron to the target. displacement energy for Zr=40eV The Attempt at a Solution the question is strange for me it seems to me there is a trick since we don't...
  8. M

    Integration of Exponential Function with Limits from 0 to t

    Homework Statement integrate the function F(t)=1-exp(-∫1/t+2 dt) limit of integration from 0 to t Homework Equations The Attempt at a Solution F(t)=1-exp(-ln(t+2)+ln2) =1-exp(ln(2-t))*exp(ln2) =1+2t-4 =2t-3 what do you think about my solutions?
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    How Does Irradiation Affect Yield Strength in BCC and FCC Structures?

    I have a question about source hardening: what is the reason for a decrease on the yield strength in the case of the 1-(Un-irradiated) Body centre cubic (bcc) 2- (irradiated) face centre cubic (fcc)
  10. M

    Math Problem Issue: Deriving 4.12 from 4.11

    Homework Statement It is not a homework but I will call it an homework for me, the problem for math derivation shown in the attached file, it is from the book I use. From equastion 4.11 we have to derive 4.12, in this step i disagree with output result since it should be (n-N/n) not as the...
  11. M

    If the inventory of the reactor of about 20,000kg

    of course I appreciate your help but you will be shocked if I tell you that I am a computer science background and moved to this field just recently that's why I need a time
  12. M

    If the inventory of the reactor of about 20,000kg

    so how to get the change of n now?
  13. M

    If the inventory of the reactor of about 20,000kg

    we had already measured n for the hydrugen , now as before should I do the balance equation and find n for 2H20, after that add them together to have total n,
  14. M

    If the inventory of the reactor of about 20,000kg

    no it doesn't change! so in this case I should measure the change on n between water steam and hydrogen gas right!
  15. M

    If the inventory of the reactor of about 20,000kg

    the gases are hydrogen and air and the question asked me to treat it as ideal gases! ΔPV=ΔnRT, but how could we get the change of n since no information given for the air! their amount will be changed due to pressure increase or decreased
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