Aug 2026· International Journal of Innovative Science and Research Technology· 0 citations· 28 references
Abstract
The chemical process industry is indispensable to modern society but involves inherent risks associated with toxic,
flammable, reactive and corrosive substances, high pressures and temperatures, complex process interactions and large
inventories. Although major accidents are relatively infrequent, their consequences may extend beyond the plant boundary
and affect workers, emergency responders, communities, infrastructure and the environment. This review re-examines
chemical-industry safety and security from an integrated process-safety and disaster-risk-management perspective, using
the author's earlier article as its foundation while substantially rewriting and expanding its content. The review covers
hazard identification, HAZOP, What-If analysis, FMEA, fault-tree analysis, Layer of Protection Analysis, quantitative risk
assessment, inherently safer design, management of change, safety instrumented systems, mechanical integrity, human
factors, emergency planning and community preparedness. It also considers natural-hazard-triggered technological
accidents, the Indian regulatory framework and international approaches including OSHA Process Safety Management and
ISO 45001. Recent developments in digitalization, sensors, predictive analytics, digital twins and artificial intelligence are
examined as opportunities for early warning and decision support, together with their cybersecurity and human-factor
implications. The review concludes that effective chemical safety cannot depend on a single safeguard. It requires a
continuously verified system integrating safer design, reliable equipment, competent people, strong safety culture,
emergency preparedness, physical and cyber security, and organizational learning.
Industrial safety has become a major concern in modern manufacturing industries due to the increasing complexity of industrial processes, the use of hazardous materials, high operating temperatures, combustible gases, pressurized systems, and automated production facilities. Among various manufacturing sectors, steel industries are considered one of the most hazardous because of the presence of fire, explosion, toxic gas release, confined spaces, heavy material handling, molten metal operations, rotating machinery, and high-energy process equipment. Effective Process Safety Management (PSM) is therefore essential to identify potential hazards, assess associated risks, and implement appropriate preventive and protective measures to minimize the likelihood and consequences of major industrial accidents.
The primary objective of this research is to develop an Integrated Process Safety Management (PSM) Framework for systematic hazard identification, risk assessment, consequence analysis, and risk mitigation in steel manufacturing industries. The proposed framework integrates internationally accepted process safety principles with practical industrial safety methodologies to establish a structured approach for managing process-related hazards. The study emphasizes proactive risk management by identifying hazardous scenarios, evaluating the probability and severity of potential incidents, and recommending suitable engineering, administrative, and operational control measures for improving overall process safety performance.
The research incorporates multiple hazard analysis techniques, including Hazard Identification (HAZID), Process Hazard Analysis (PHA), Hazard Identification and Risk Assessment (HIRA), qualitative risk matrix methodology, consequence analysis, and risk evaluation to investigate various process units and operational activities. Hazards associated with fire, explosion, toxic gas release, confined space entry, work at height, material handling, rotating equipment, electrical systems, pressure vessels, and chemical handling are systematically identified and analyzed. Risk levels are determined by considering both the likelihood of occurrence and the severity of potential consequences, enabling the prioritization of critical hazards requiring immediate attention.
Furthermore, consequence analysis is carried out to evaluate the possible impact of major accident scenarios involving fire, explosion, and toxic releases. The study also proposes appropriate risk reduction strategies based on the hierarchy of controls, engineering modifications, preventive maintenance, standard operating procedures, permit-to-work systems, process monitoring, emergency preparedness, and personnel competency development. A qualitative risk matrix is utilized to classify identified hazards into high, medium, and low-risk categories. High-risk scenarios require immediate corrective actions and implementation of effective control measures, whereas medium-risk activities require continuous monitoring and risk reduction based on the As Low As Reasonably Practicable (ALARP) principle. Low-risk activities are considered acceptable under routine operational control and periodic safety review.
In addition to hazard analysis and risk evaluation, the proposed framework highlights the significance of continuous safety improvement through systematic safety audits, incident investigation, process safety performance indicators, emergency response planning, disaster management planning, safety training, and organizational safety culture. The integration of these Process Safety Management elements establishes a comprehensive safety management system capable of reducing process-related incidents, improving regulatory compliance, enhancing operational reliability, and supporting sustainable industrial development. The framework also provides practical guidance for implementing preventive safety measures throughout the operational lifecycle of steel manufacturing processes.
The findings of this study demonstrate that an integrated Process Safety Management approach significantly improves hazard control, strengthens decision-making in risk management, and enhances the effectiveness of consequence-based safety planning. The proposed framework serves as a practical decision-support tool for industrial safety professionals, plant managers, and process engineers in identifying critical hazards, evaluating operational risks, and implementing appropriate mitigation strategies. The methodology developed in this research is generic in nature and can be effectively adapted to other high-risk process industries, thereby contributing to safer industrial operations, improved organizational resilience, and sustainable process safety performance.
Raj Dhanyakumar Kale, Mohsin Khan and Dr. Neeta Ba· International Journal of Adv...· 0 citations
Chlorine is one of the most extensively used hazardous chemicals in the chemical process industry due to its vital role in the production of bleaching agents, disinfectants, plastics, synthetic rubber, pharmaceuticals, agrochemicals, water treatment chemicals, and numerous industrial intermediates. Despite its widespread industrial applications, chlorine is highly toxic, corrosive, and reactive, making its storage, transportation, and handling a significant process safety challenge. Even a minor accidental release can result in severe consequences, including toxic exposure, environmental contamination, equipment damage, and potential fatalities. Therefore, systematic hazard identification, quantitative risk assessment, consequence analysis, and effective mitigation strategies are essential to ensure safe chlorine handling operations.
The present study focuses on the assessment of process safety risks associated with chlorine handling in a chemical process industry using an integrated Process Safety Management (PSM) approach. The research involves the identification of potential hazards throughout the chlorine handling system, including storage cylinders, pipelines, valves, vaporizers, and transfer operations. Hazard identification techniques such as structured checklists, workplace observations, document review, and questionnaire-based surveys were employed to identify unsafe acts, unsafe conditions, equipment failures, and human error that may lead to accidental chlorine releases. The identified hazards were further analyzed using qualitative and quantitative risk assessment techniques to evaluate the probability of occurrence and the severity of their consequences.
Consequence analysis was carried out using ALOHA (Areal Locations of Hazardous Atmospheres) software to simulate different accidental chlorine release scenarios under varying meteorological conditions. Worst-case and alternative release scenarios were analyzed to estimate toxic dispersion distances, threat zones, exposure levels, and potential impacts on workers, nearby communities, and the surrounding environment. The effectiveness of various passive and active mitigation measures, including scrubber systems, water spray curtains, ventilation, emergency shutdown systems, confined storage arrangements, and leak detection systems, was evaluated to reduce the consequences of accidental chlorine releases.
The study also examines the effectiveness of emergency preparedness and response planning by incorporating atmospheric dispersion modelling, exposure assessment, building air infiltration considerations, and emergency response strategies such as shelter-in-place, controlled evacuation, emergency communication, and incident command procedures. The influence of environmental parameters such as wind speed, atmospheric stability, release quantity, and release duration on toxic cloud dispersion was also investigated to understand their impact on emergency response planning and risk reduction.
Based on the findings of the risk assessment and consequence analysis, appropriate engineering controls, administrative controls, operational procedures, inspection and maintenance practices, employee competency development, and emergency preparedness measures have been recommended to strengthen the Process Safety Management system. The proposed mitigation strategies are intended to minimize the probability of chlorine release incidents, reduce occupational health and environmental risks, improve regulatory compliance, and enhance overall industrial safety performance.
The outcomes of this research provide a practical framework for risk identification, consequence assessment, and mitigation planning for chlorine handling operations in chemical process industries. The study demonstrates that integrating Process Safety Management principles with hazard identification techniques and ALOHA-based consequence modelling significantly improves decision-making for accident prevention, emergency planning, and sustainable industrial safety management. The proposed methodology can also be adapted for the risk assessment of other hazardous chemicals handled in process industries.
Harish Shyam Madankar, P. S. Tathod and Dr. Neeta · International Journal of Adv...· 0 citations
Safety hazards in coal mines are characterized by significant spatiotemporal heterogeneity, dynamic evolution, and multi-actor coupling. Traditional safety management models, which center on periodic inspections and accident rectification, struggle to achieve proactive risk identification and full-process control. To address this issue, this paper proposes a multi-scale, collaborative “four-in-one” safety management framework oriented toward the hazard lifecycle, based on the spatiotemporal evolution patterns of safety hazards. This framework integrates systems safety theory with the safety philosophy of socio-technical systems, viewing safety hazards as an evolutionary process shaped by the combined effects of spatial exposure, human behavior, organizational management, and dynamic states. It establishes a comprehensive safety governance system comprising precise risk identification, active personnel participation, closed-loop accountability governance, and intelligent dynamic feedback. By integrating the “Area–Point–Number” risk classification method; the “Two-way Risk Purchasing” incentive mechanism; the “Six-level, Six-step, and Three-chain” closed-loop management model; and the Hazard Alert System, the framework achieves the coordinated optimization of risk identification, hazard management, and information feedback. Application validation based on safety hazard data from a coal mine between 2017 and 2020 demonstrates that this method enhances the ability to identify potential risks and effectively reduces major hazard types, such as management deficiencies, unsafe behaviors, and unsafe conditions. The research findings indicate that this framework overcomes the limitations of traditional safety management—such as a single-entity approach, static inspections, and passive responses—and facilitates a shift in coal mine safety governance from hazard control to risk prevention and from manual, experience-based management to intelligent, collaborative decision-making, thereby providing a new theoretical approach for enhancing the safety resilience of complex coal mine production systems.
Jian Gan, Shahadad Hossain, Dongshan Yang et al.· Processes· 0 citations
The Oil and Gas (O&G) and downstream petrochemical industries handle massive volumes of volatile hydrocarbons under extreme thermodynamic conditions, making them exceptionally vulnerable to catastrophic loss-of-containment events. Historically, safety management strategies have operated in silos: occupational safety dominates the Engineering, Procurement, and Construction (EPC) phase, while Process Safety Management (PSM) and Quantitative Risk Assessment (QRA) govern the operational phase. This fragmented paradigm overlooks a critical reality: procedural and mechanical deficiencies during EPC (e.g., inadequate weld fusion, improper flange torqueing, incorrect valve selection, and deficient pre-commissioning testing) represent the latent pathogens that directly trigger major operational disasters. This research presents an integrated, closed-loop process safety lifecycle model that bridges this divide by systematically coupling Hazard Identification and Risk Assessment (HIRA) and Failure Mode and Effects Analysis (FMEA) during EPC execution with QRA thermodynamic and blast consequence modeling. Utilizing rigorous forensic case studies of landmark disasters—including the IOCL Jaipur terminal fire (2009), the ONGC Hazira gas terminal leak (2020), and the IOCL Mathura refinery incident (2020)—we establish direct causal links between construction QA/QC failures and operational vapour cloud explosions (VCE) and boiling liquid expanding vapour explosions (BLEVE). Mathematical consequence modeling utilizing the Roberts fireball formulation for a 3,602,137 kg gasoline inventory yields a maximum fireball diameter (D_max) of 889.09 m, a duration (T_max) of 68.98 s, and an active surface emitting power (SEP_max) of 333.98 kW/m2, producing lethal thermal radiation (>63 kW/m2) even at 500 m standoff distances. TNT-equivalency modeling of a 450,000 kg vapor cloud generates a blast yield of 169,188 kg TNT, establishing peak overpressure contours via Hopkinson-scaled distance (R_bar). Furthermore, a quantitative FMEA framework establishes a strict threshold (RPN > 100) mandating automated safety instrumented systems—specifically Remote Operated Shut Off Valves (ROSOVs) and emergency depressurization interlocks—prior to mechanical completion. The proposed framework provides an empirical, standards-compliant methodology for EPC contractors and plant operators to eliminate latent hazards at the build stage, ensuring inherent process safety across the entire asset lifecycle
Vishnu Singh and Prof. P.S Tathod· International Journal of Adv...· 0 citations
Natural gas has emerged as one of the major energy sources supporting India's petrochemical, power generation, fertilizer, refinery, and manufacturing sectors. The continuous expansion of cross-country gas pipeline networks under the national energy infrastructure has significantly increased the demand for safe and reliable pipeline installation practices. However, gas pipeline construction involves several high-risk activities, including excavation, trenching, Horizontal Directional Drilling (HDD), pipe lifting, welding, hydrostatic testing, and confined space operations, which expose workers to multiple occupational hazards and increase the likelihood of accidents if appropriate safety measures are not implemented.
The present study aims to develop an integrated safety assessment framework for hazard identification, risk assessment, and risk control during gas pipeline installation works. The research focuses on identifying hazards associated with various construction activities, evaluating their risk levels, and recommending appropriate control measures to improve occupational safety and reduce accident potential. The study adopts a comprehensive methodology comprising questionnaire-based survey analysis involving 127 professionals associated with gas pipeline construction, systematic site observation of actual construction practices, Fault Tree Analysis (FTA) for determining root causes of critical accident scenarios, and Hazard Identification, Risk Assessment and Risk Control (HIRARC) for qualitative risk evaluation and prioritization. The integration of these techniques provides a systematic approach for identifying unsafe acts, unsafe conditions, human factors, equipment failures, and management deficiencies contributing to construction-related incidents.
The findings indicate that unsafe worker behaviour, inadequate supervision, poor safety compliance, ineffective communication, and deficiencies in risk control measures are among the major contributors to occupational accidents during gas pipeline installation. Fault Tree Analysis revealed that seemingly minor unsafe conditions and procedural deviations can combine to produce catastrophic events, while HIRARC effectively prioritizes hazards according to their likelihood and severity, enabling the implementation of suitable engineering, administrative, and personal protective control measures. The study further emphasizes that active management commitment, competent safety professionals, regular site inspections, safety induction programmes, toolbox talks, and continuous monitoring significantly enhance workplace safety performance.
The proposed integrated safety assessment framework offers a practical and systematic approach for strengthening safety management in gas pipeline construction projects in India. The outcomes of this research can assist project owners, contractors, safety professionals, and regulatory agencies in improving hazard identification, minimizing occupational risks, enhancing safety compliance, and promoting a proactive safety culture throughout the lifecycle of gas pipeline installation projects.
Ajay Kumar Singh, Mohsin Khan and Dr. Neeta Banger· International Journal of Adv...· 0 citations
Occupational Safety and Health (OSH) remain major concerns in the construction industry, which continues to report high numbers of accidents, injuries, and fatalities worldwide. Despite the availability of modern safety practices and advanced technologies, the industry still struggles to maintain safe working conditions. The current review adopts the Joanna Briggs Institute (JBI) scoping review methodology and is reported in accordance with the PRISMA-ScR reporting guidelines. Three stages of screening were carried out and finally 76 articles were selected for this study. This review paper aims to understand the key causes of safety issues and explores various strategies to reduce risks on construction sites. It examines common hazards, such as falls, electrocutions, and equipment-related incidents, along with the factors that contribute to them—including poor safety culture, worker fatigue, inadequate training, and weak management support. The paper highlights the growing role of technology in improving safety, including the use of IoT devices, Building Information Modeling (BIM), robotics, and virtual/augmented reality (VR/AR). These innovations offer promising solutions for real-time monitoring, immersive training, and risk prediction. Based on the findings, several practical recommendations are proposed to enhance safety culture, update regulations, improve management practices, and invest in continuous training. While technology holds great potential, its success depends on proper implementation and organizational commitment. This study provides a critical overview about the current state of modern safety technologies in construction industry. It highlights the significance of integration of these technologies into construction industry to improve safety. Finally, it provides a foundation for future research and offers insights for policymakers, industry professionals, and researchers aiming to build safer construction environments. The findings of this review contribute to the advancement of Sustainable Development Goal (SDG) 3 (Good Health and Well-being) and SDG 8 (Decent Work and Economic Growth) by highlighting strategies and emerging technologies aimed at improving occupational health and safety in the construction industry.
