International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 12 Issue: 12 | Dec 2025
p-ISSN: 2395-0072
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The Strategy for Process Safety during the Initial Stages of R &D reactions – Toxicity and Flammability Hazard Evolution Techniques Mr. Dinesh H. Gore1, Dr. Satyajit M. Deshmukh2 1,Student - Department of Chemical Engineering, School of Engineering and Applied Sciences, University of Mumbai
(Kalyan Sub Centre), Maharashtra, India. Author Affiliation & Address
2,Second Professor - Department of Chemical Engineering, School of Engineering and Applied Sciences, University
of Mumbai (Kalyan Sub Centre), Maharashtra, India. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - Process safety studies play a crucial role in the
meaning they can ignite at relatively low temperatures. New materials, chemicals, and processes are often tested, and many of these may involve substances that are flammable or pose other combustion-related hazards. Toxicity hazards are a significant concern in many industrial, scientific, and research environments. Early identification, a robust risk assessment process, and implementation of appropriate control measures are essential to preventing harm to people, animals, and the environment. The initial stage of research and development for new products involves assessing the potential hazards and evaluating the feasibility of these hazards through experimental investigations of all reactions occurring in the production processes, which can be quite costly. Early phase of research & development work, to identify reagents are acceptable to use in a scale process requires the practical assessment of specific hazardous properties. Energetic materials like nitro compound, diazo compound, propellants and pyrotechnic compositions are high explosive hazards, resulting from the high quantities of heat and gas that can be released upon rapid decomposition. These can be identified in early phase and categories risk assessment to determining the likelihood or severity of unwanted hazards.[3] Initiated the process safety study in early phase of the research & development work which helped to identify hazardous material properties like explosive, flammable, toxic etc. Eliminated the hazardous materials from the process, substituted the hazardous material with non-hazardous materials for the design of the inherently safe process at R&D stage. Based on the hazardous materials risk like explosive, toxic, flammable used the appropriate PPEs, provided appropriate administrative controls and appropriate engineering controls for the inherently safe design process for commercial scale
specialty chemicals, agrochemicals, pharmaceuticals, and petrochemicals industries, spanning from the development phase of new molecules to their commercial implementation. The process safety team conducted a literature review on explosive materials and processes during the initial stages of molecular development. Process safety personnel initially identify and comprehend potential hazards by analyzing historical incident data. This involves a systematic review of relevant literature, including scientific papers and professional articles, focusing on various types of hazards such as chemical process and reaction risks, health hazards, explosion risks, dust hazards, and the flammability of combustible gases and vapors, as well as environmental hazards. This review paper outlines the initial identification of hazards conducted through a literature survey, data from Bretherick’s handbook, and an analysis of previous accident history. Outlined the hazards associated with toxicity and flammability, along with a risk assessment of these hazards. Assessed the toxicity risks of both single components and multicomponent mixtures utilizing the LD50, LC50, and TLV equations. Analyzed the flam ability risks of mixtures through the application of LFL and LOC equations. A process safety strategy during the R&D phase of reactions is essential for attaining operational excellence. This approach enables businesses in process industries to identify and mitigate risks throughout their production lifecycle, effectively managing or eliminating hazards within their facilities while adhering to the highest safety standards. Key Words: Process safety, Process Safety Incident, Literature review, Toxicity hazard, Flammability hazard etc
2. PROCESS SAFETY INCIDENTS:
1. INTRODUCTION
Many process safety incidents occurred due to hazardous, explosive materials and reaction process in chemical, pharmaceutical, agrochemicals & petrochemicals industries and chemical operations, such fires, explosions and leaks etc. Most incidents were due to hazard awareness & identification, design, controls, safeguards, operating procedures and layers of protection, safety culture, and preventative maintenance. List of few contributing factors for
Number of products of the chemical, pharmaceutical, agrochemicals & petrochemicals industry is produced using potentially hazardous reactions. The toxic and flammable hazardous substance involved in the industry process. A flammable hazard refers to a material or substance that can easily catch fire and burn when exposed to an ignition source, such as heat, sparks, or opens flames. These substances are typically volatile and have low flash points,
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