Risk management, Fragility, Uncertainties, Fault Tolerant Systems, Explosion
1. A propane tank is located 100 m away from the nearest buildings. The fragility to explosion can be expressed by p = 0 for I < 0.7 MPa s p = aI for 0.7 < I < 1.3 MPa s p = 1 for I > 1.3 MPa s Accounting for various release and ignition scenarios, including uncertainties, the estimated probability distributio ...continues
Risk Analysis and Management: Earthquake - An example of Fragility and Load
The fully formated problem is with the solution. The fragility of a building as function of earthquake magnitude is given as follows: if L Lf Pf (L) = 1 exp{ -C(L-Lf)2} if L < Lf Pf (L) = 0 where L is the magnitude of the earthquake. This fragility curve has two parameters, Lf and C. Lf is the thresh ...continues
Specify Control scheme for a Cryogenic Stripper
Please see the attached file for the fully formatted problem(s). S.17. Sketch a control scheme for the cryogenic stripper shown below that is used for removing small amounts of propane from natural gas. [DIAGRAM] (a) Cooling-water valve V-I is manipulated to control the gas temperature leavό4 the cooler. (b) Valve ...continues
Specify Control Scheme for Heat Integrated Distillation Columns
Please see the attached file for the fully formatted problem(s). 8.15. Two distillation columns are heat-integrated as shown in the sketch below. The first column has an auxiliary condenser to take any excess vapor that the second column does not need. The second column has an auxiliary reboiler that provides additional heat ...continues
Pump Problem: Flow Rate and Elevation Calculation
Ethylbenzene at 40 degrees C is delivered by a pump from a storage tank to a reactor elevated 3.5 m above the pump. The pressure at the inlet to the reactor is 1.5 barg. There is a control valve in the line, with a pressure drop of 0.75 bar across it. the flowrate of ethylbenzene is 8 L/s. What is the maximum flowrate possibl ...continues
Continuous Stirred Tank Reactor (CSTR):Flow rate and Reactor Volume
The liquid phase reactions a. A+B--->C b. A+B--->D are carried out in a perfectly insulated CSTR. The desired reaction (a) is first order in A and zero order in B, while the undesired reaction (b) is zero order in A and first order in B. The feed rate is equimolar in A and B. Species A enters the reactor at a temperatu ...continues
Head-box issues in Pulp Mill : Theoretical Modelling Question
The process in question uses a centrifugal fan pump to convey a 1000 gallon per minute flow containing 2% finely ground wood pulp to a head box...which in turn is supposed to ocnvert turbulent flow to laminar flow and then deposit the water & pulp slurry on a high speed moving wire in order to form a wet fiber mat. However, t ...continues
Inlet velocity and flow from approach piping to the stilling well
Please see the attached file for the fully formatted problem(s). Please see the attached file for the fully formatted problem(s). > 1200 gallons/min of water flows into approach piping that is tapered in design ----- 1000 gallons/min enters a stilling well while 200 gallons per minute recirculates back to a tank: Questi ...continues
