Paper on Safety and Reliability Issue in Bhopal Accident

Added on - 15 Apr 2020

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SAFETY AND RELIABILITY
Table of ContentsPart 1.......................................................................................................................................................2Introduction.............................................................................................................................................2Bhopal accident.......................................................................................................................................2Conclusion...............................................................................................................................................7Part 2.......................................................................................................................................................7Fault tree analysis....................................................................................................................................7Minimal cut set........................................................................................................................................8Calculation for the occurrence in the probability..................................................................................10Conclusion.............................................................................................................................................11References.............................................................................................................................................111
Part 1IntroductionDue to the complex technological system, managing the hazards are becoming crucial. Themajor industrial accidents which occurred till now are Mexico gas explosion, Bhopal, andChernobyl. Among these, the worst industrial disasters is the Bhopal tragedy. In this paper, wewould like to derive lessons for the issues which were faced during Bhopal accident. The hazardsthat are related to the arising projects should be analyzed by the decision makers and effect of thehazards should be found and a solution must be framed at the project formulation phase. Bydoing this this helps to reduce the hazards that is related to the project. This reduces the effect ofthe danger. Reduced cost options are likely to be provided by the anticipated and preventapproach because of this hazards.Bhopal accidentBhopal is the underdeveloped city. It is the capital of Madhya Pradesh state. Under backwardarea investment allowance, this state got so many incentives to start industries. The UnionCarbide India Limited group of part at Bhopal to communicate a range of insect killer andherbicides resulting starting a carbonyl base (Duhon, 2014). The Bhopal disaster was consideredas a world’s worst disaster in India. It was also referred as Bhopal gas tragedy. Bhopal accidentoccurred by the spillage of a very toxic substance in the environment with great measures from ainsect killer plant. That toxic substance is methyl isocyanate (MIC) (Mishra, 2015). Which is aresult of underprivileged hazard organization, poor usage of early cautionary system,underprivileged safety organization practice, a poor insight of the hazard indicated and so on(Poulter and Wann, 2013). The detailed explanations of Bhopal accident and the risk have beenissued elsewhere. A portion of new evidences have been transported to light consequently(Vijayan, 2010).Causes2
The force which is contemporary in the herb is to sprays alkali constantly till the herb isfunctioning. A scrubber in the herb must be in activated mode. But the supervisors kept thescrubber in passive mode on October 1984. So that they can shut down the refrigeration plant.But these will not cause any problem for the disaster. There was 2 venting appearances namelyvent header and relief valve (RVVH) and PVH. The RVVH compression relief valve to the ventvapor scrubber if any burden build-up in one of the containers and gases are released. The 2ndvent line is a VGS which is connected to the nitrogen pressurization system. It provides leadingto the vent gas chamber to the process vent header (PVH) (Woolf, 2012). From PVH to the VGS,the gases will be released. By the Union Carbide Corporation, PVH, and RVVH are not unified(Ganguly, Mandal and Kadam, 2017). But they both should be in a connected position. So by thesupervisor, a decision was taken to carry out a major plant modification to connect RVVH andPVH sometime in May 1984 before the accident. In early December 1984, the plant was shutdown for two months for maintenance. Around 26 November 1984, to transfer MIC in theprocessing unit an operator tried to pressurize MIC tank 610. By way of it restricted about 42tons of methyl isocyanate. When a nitrogen was directed into the container, it get unsuccessful toget pressurized. Which is an indicating that around is a leakage anywhere. But the managersdidn’t assumed and again they pressure container E611 containing about 40 tons of the methylisocyanate.3
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