Unit 12: The Bhopal Gas Tragedy (1984) | STEM Chemical Engineering Disaster

Investigate the world's worst industrial chemical disaster with this complete 6-page printable STEM Case Study Packet! Designed specifically for middle and high school classrooms, this unit provides a deep, informative look at the 1984 Bhopal Gas Tragedy, methyl isocyanate (MIC) reaction kinetics, exothermic runaway reactions, chemical scrubber mechanics, toxic gas dispersion plume physics, and industrial safety ethics. What’s Included in this 6-Page Deep-Dive Packet: Page 1: Historical Case Study & Technical Breakdown – Full historical narrative of the December 2–3, 1984 disaster at the Union Carbide India Limited (UCIL) pesticide plant in Bhopal, India, methyl isocyanate (MIC) synthesis, water ingress exothermic runaway kinetics, failed safety scrubbers, flare tower maintenance shutoffs, atmospheric inversion plume dispersion, and comprehension check questions. Page 2: Day in the Life Scenario Challenge – Students step into the shoes of a Chief Chemical Safety Inspector at midnight on December 3, 1984, analyzing real-time storage tank pressure spikes, temperature runaway logs, vent gas scrubber bypasses, and emergency plant evacuation protocols. Page 3: Hands-On Unplugged Simulation & Applied Math – Simple step-by-step math calculations comparing exothermic reaction heat generation vs refrigeration cooling capacities, toxic gas plume dispersion concentration (PPM), and population exposure risk radius formulas. Page 4: Engineering Ethics & Workplace Dilemma – Corporate cost-cutting vs industrial safety standards: analyzing double-standard safety policies between US and foreign subsidiary plants, turning off refrigeration systems to save $30/day, undermanned maintenance staff, and corporate accountability. Page 5: Redesign Brief & Innovation Lab – Creative blueprinting assignment where students design "Bhopal Chemical Synthesis Plant V-2," featuring inherently safer design (ISD) principles, micro-quantity storage tanks, redundant automated caustic soda scrubbers, pilot-ignited emergency flare towers, and fence-line community siren networks. Page 6: Teacher Answer Key & Scoring Rubric – Complete answer key for all questions and math problems, plus a 10-point grading rubric on Page 6 for evaluating student work on Page 5. Teacher Benefits: 100% Unplugged & Copy-Paste Friendly – Clean text layout with zero dark background boxes, code block syntax, or special math symbols for seamless editing in Word, Google Docs, or Canva. Multi-Day Classroom Value – Covers 3 to 5 full class periods; perfect for Chemistry, Physical Science, Environmental Science, Chemical Engineering, World History electives, or emergency sub plans. Highly Engaging Content – Combines exothermic reaction math, chemical thermodynamics, plant control room diagnostics, corporate ethics, and chemical process engineering redesign!