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  • Q1: PART A: Gas releases and flammability diagram 1. Draw the flammability diagram of carbon monoxide (CO): Your graph must clearly show the: The air line and the stoichiometric line; • The LFL, UFL, LOC, LFL in O₂ and UFL in O₂; The flammable region; Flammability Data for CO 12.5% LFL UFL LFL in O₂ UFL in O₂ LOC 74.0% 15.5% 94.0% 5.5% 100% Oxygen 90% 80% 0% 70% 60% %OT 50% 40% 20% 30% 20% 30% 10% 0% 40% 100% 50% 90% Nitrogen 80% 70% %09 €60% 50% 70% 40% Carbon Monoxide 30% %08 20% %06 10% /5 .0% 100% PART B: HAZOP Study on a Acrolein Tank 974, ACROTANK, Marseille, Fos sur mer, France A risk assessment is being performed by your Process Safety team on a tank containing liquid acrolein in a tank farm. Your team has done a pretty good job under the Process Knowledge Management Element of your PSM system and has prepared the technical document TANK974-TECHDOC (Version 1). ATEXAS A&M UNIVERSITY GATAR CHEMICAL ENGINEERING Your team chose to use the HAZOP technique to identify the hazards and evaluate the risks of the identified scenarios. You can find the HAZOP document in Table 1 that was started by your team. This table is incomplete and needs your input. The scenarios identified by your team mainly involve the catastrophic rupture acrolein tank 974 which would lead to the entire inventory of acrolein to spill into the bund. This would form a pool of acrolein that would vaporize and form a vapor cloud. The plant is nearby a residential area. The emergency response team indicated that they need at least 1 hour to evacuate people in the residential area in case of release of acrolein. The following questions are designed for you to evaluate the consequences of such scenario, complete the HAZOP table and propose risk reduction measures if needed. The results of the HAZOP study will be conveyed to higher leadership who will make the necessary to ensure the safety of the operations following your recommendations. ACROTANK counts on you and your expertise. 1. Is the bund big enough to hold the spilled liquid in case of catastrophic rupture acrolein tank 974? Demonstrate your answer. /2 2. Leaking pipe in a pressurized process unit (Figure 1) Case A Process unit at 3 bara Gas at 10 bara se A: Will the gas release flow be choked? tify your answer Gas leak ill the gas flow be higher than case A? answer Case B Process unit at 1.5 bara Figure 1: Leaking pipe located into a pressurized process unit (choking pressure ratio is 0.5) Gas at 10 bara W Gas leak 12 AM od 10 bara Figure 1: Leaking pipe located into a pressurized process unit (choking pressure ratio is 0.5) Case A: Will the gas release flow be choked? Justify your answer an Case B: Will the gas flow be higher than case A? Custify your answer Gas at 10 bara Gas SPRING 2022-CHEN 455 Final Exam AM 2. How long will it take for the pool of acrolein to fully vaporize? Demonstrate your answer. Note: you can use a simple approach by ignoring the wind effect on the vaporization rate. TEXAS A&M UNIVERSITY at QATAR CHEMICAL ENGINEERING /6See Answer
  • Q2:QUESTION 3 1. A process involves the removal of oil and other liquid contaminants from metal parts using a heat- treat oven, which has a volume of 15,000 ft. The oven is free of solvent vapors. The ventilation rate of the oven is 2,100 cfm, and the safety factor (K) is 3. The solvent used in the process evaporates at a rate of 0.6 cfm (cubic feet per minute). The operator would like to know how long it would take the concentration to reach 425 ppm. See Answer
  • Q3:4 In a unit where grain is steeped, sulfur dioxide is added directly to grain and water. Operators have long complained about sulfur dioxide fumes, citing runny noses, teary eyes, coughing, and headaches. The concentration has been checked many times and has always measured lower than OSHA specifications. Management's stance has always been, "Don't spend money to fix something if it isn't broken." A few employees have quit, citing allergies and other medical problems. Operators in the area have requested an engi- neering study to remedy the situation. Chris is given the job of investigating whether the exhaust fan should be replaced with an expensive ventilation system. What are Chris's obli- gations? Can they all be met? What creative strategies can you suggest to Chris to deal with this situation? Suchel Look un this article, and Maximum points: 100 Submit an MS Word .docx document via Canvas Margins 0.75 inch on all sides, 12 point font, Times New Roman throughout, 1.5 line spacing for text. Use expressions and definitions introduced in the Ethics chapter in your writing if appropriate. Chris's obligations: List at least five obligations. Under each obligation write at least two sentences regarding why he can likely meet this obligation or not. Creative strategies: List at least two creative strategies to deal with the situation. Write at least three sentences discussing each strategy. Rubrik: followed the format, no spelling errors, no style "Normal" present in the document: 25 points Obligations: 5 points each obligation, 25 points total Strategies: 25 points each strategy If more Obligations and/or Strategies beyond the requirement above are offered then this can be used to make up for points missed elsewhere, with the same amount of points per item as described above.See Answer

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