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eric herman

eric h.

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Given the following fault tree on the next page and its associated probabilities, please develop the minimal cut sets and given those minimal cut sets, calculate the probability that the top event will occur. In addition, for each cut set, calculate the relative importance to the top event’s total probability. Include in your work an executive summary, the fault tree you developed and all calculations and analytical work. Please analyze the following fault tree. Determine the minimal cut sets, the probability of occurrence of the top event and the relative importance of each cut set. With this information, please explain what you might do to reduce the probability of the occurrence of the top event Top event - High Nitrogen Pressure in Tank Causing Catastrophic rupture and large release of toxic gas leading to the exposure of workers and the public. Intermediate event 1 – Pressure relief venting fails to occur Intermediate event 2 – Mechanical failure in pressure relief vales occur Intermediate event 3 – Nitrogen pressure control system fails to control pressure reaching tank Intermediate event 4 – Blocked lines occur Intermediate event 5 – Failing wide open Basic event # 1 - The plant nitrogen system is intended to be operated at a higher pressure than the tank’s pressure rating (full nitrogen system pressure must be controlled so it does not reach the tank). Probability the nitrogen pressure is higher than tank pressure rating 1.8*10^-2 Basic event #2 - Pressure relief valves stick closed occasionally but you do not have good inspection and repair history data. Industry-wide data show the probability of a valve sticking closed to be about 3*10^-4 Basic event #3 - Mechanical failures in pressure relief valves occur rarely in plants where they are tested and maintained on a regular basis (probability of failure in this case is 2*10^-5 ). Basic event #4 - Blocked lines occur rarely in clean service. Sulfur trioxide is considered clean service so the probability of a blocked line occurring is 1.2*10^-3 Basic event #5 - The probability of failure (wide open) for pressure regulators is about 4.1*10^-2 (system pressure regulator), Basic event #6 - The probability of failure for level bridle pressure regulator is 3.6*10^-2

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A french teacher taught students to say the french name of various foods when they see a photo

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Asset, Liability, or Equity? Interest Revenue Accounts Payable Common Stock Supplies Advertising Expense Unearned Revenue Prepaid Rent Utilities Expense Dividends Service Revenue

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Select all of the true statements regarding the phospholipids of the cell membrane. Multiple select question. Phospholipids are arranged in a bilayer. Phospholipids are composed of a hydrophilic head and hydrophobic chains. Phospholipids are rigidly connected. Phospholipids float side by side in a fluid mosaic.

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QUESTION 3 When a drug has high selectivity it is likely to have: O more potency O less potency O less adverse effects O more adverse effects

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artition or wall dividing a cavity, such as that between the right and left atria and right and left ventricles

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Which of the following cellular structures is responsible for the production of ribosomal subunits in eukaryotic cells? a) Golgi apparatus b) Nucleolus c) Endoplasmic reticulum d) Lysosome

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A line passes through the points P(2, -8, -6) and Q(-3, -6, -3). Find the standard parametric equations for the line, written using the base point P(2, -8, -6) and the components of the vector \overrightarrow{PQ}.\newline x=\boxed{\qquad}, y=\boxed{\qquad}, z=\boxed{\qquad}\newline (Type expressions using t as the variable.)

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Complete the sentence: A earthquake of magnitude 5 on the Richter scale .... A displaces the ground by 5 millimeters at 10 kilometers distance B is the same as a magnitude 5 on the Modified Mercalli Scale. C displaces the ground by 5 millimeters at 1 kilometer distance D releases 40 times the amount of energy as an earthquake of magnitude 4 on the Richter scale E releases 10 times the amount of energy as an earthquake of magnitude 4 on the Richter scale

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Compute the following limit.\\ \( \lim_{x \to -\infty} (-6x^4 + 5x^3 - 3x^2 - 5x + 1) \) Select the correct answer below: -6 6 8 $-\infty$

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