process plant sciencedirect

The formulation of gas detector placement in process plants as an optimization problem was first given by Legg et al. (2012). The proposed formulation called SP is a MILP (Mixed-Integer Linear Programming) with the objective of minimizing expected detection time for a set of computational fluid dynamics (CFD)-simulated scenarios.

Predictive warning system. 2.1. Theory. Consider a dynamic model of a nonlinear system of the following form: (1) x k + 1 = f ( x k, u k, d k), y k = g ( x k), where x ∈ R n x is the unknown states, y ∈ R n y is the process measurements, u ∈ R n u is the manipulated variables, and d ∈ R n d is disturbances to the system.

This chapter discusses various aspects related to the process plant risk management. The best defense against a financial loss or a charge of negligence is to avoid mishaps, that is, to operate reliably. Risk management is the name given to a systematic approach to identify hazards, assess the risks from each, and decide what (if anything ...

Maintaining operation close to a significant restraint can give very large financial returns. Process Control for Mineral Processing Plants It is first necessary to determine the variables that limit performance. For instance what happens if the feed rate is increased (eg. where does spillage occur).

Abstract. In the context of domino effects, vulnerability analysis of chemical and process plants aims to identify and protect installations which are relatively more susceptible to damage and thus contribute more to the initiation or propagation of domino effects. In the present study, we have developed a methodology based on graph theory …

7. Conclusions. We have proposed a novel detector to address the extraction, demodulation and detection of time-varying oscillations in noisy process plant. A primary mathematical description of the time-varying oscillation was first presented through properly extending the notion of AM–FM signal.

Abstract. Process plants manufacture chemical products to meet modern world needs. For safer operation, process safety is envisaged via four strategies, namely inherent, passive, active, and procedural. Among them, the inherent strategy covers all …

An effective operation of process plant depends on the maintenance practices followed and its operating reliability. In process plants having increasing demand for its product, the effective operation is very important. ... Procedia Technology 24 ( 2016 ) 576 â€" 583 Available online at ScienceDirect 2212-0173  ...

Given the pervasiveness of health hazards, the creation of healthier process plants relies on collaborative endeavors at different phases of the life cycle (Hurme and Rahman, 2005, Liu et al., 2023).In the process development and design phase, chemical health hazards can be estimated by a series of classical indices, such as Dow's …

The layout design of chemical process plant plays an important role in improving the safety level and reducing economic investment. From an economic perspective, a well-planned layout can effectively save operating costs 10–30%, while a poorly planned layout may increase operating costs by 15–70%.

The PSM 29 CFR 1910.119 (h) regulations promulgated in 1992 provides standards that covered processes to obtain and evaluate data regarding contractors' health and safety programs as well as the contractors' performance evaluation. Many of the accidents involving contractors are direct result of poor training of contractors and/or poor control ...

For broiler carcass, a processing plant that desired category 1 must achieve 50% or less of the maximum acceptable limit allowed (i.e., ≤4.9%) during the most recent sampling moving window, whereas category 2 signifies that a plant meet the maximum acceptable limit allowed but with results over 50% of the allowed acceptable limit (i.e., …

Process-general knowledge comprises of the process unit HAZOP models that are developed in a context-independent manner, which remains the same irrespective of the process plant under consideration. The HAZOP model of a process unit consists of its class definition and generic qualitative causal model-based methods for identifying …

Abstract. This paper illustrates the application of dynamic simulation for the development of CO 2 processing plants which are part of oxyfuel power plants. It is shown how dynamic simulation models are used to study transient processes such as load changes and disturbances, to evaluate and improve process design concepts, and to …

Description. The Chemical and Process Plant Commissioning Handbook, winner of the 2012 Basil Brennan Medal from the Institution of Chemical Engineers, is a guide to converting a newly constructed plant or equipment into a fully integrated and operational process unit. Good commissioning is based on a disciplined, systematic and proven ...

Application of methodology in a process plant3.1. Process description. For this study, process plant of a gas production facility has been chosen. The facility includes production wells, flow lines, gathering system and process plant which has coolers, separators and compressors. STPA is applied on the process plant and then it studied …

Water and energy are among the most highly used commodities in industrial processes. Refineries and petrochemical plants spend water in big amounts for stripping, liquid–liquid extraction, and different washing operations. Large energy consumption in the form of heating and cooling utility is also required.

2D engineering drawings and 3D models (2D & 3D) are crucial documents in plant design and construction. In a timely fashion, a process plant's life cycle can be divided into planning, design, construction, operation and disposal [1]. Thereinto, design stands out as the most important stage in ensuring the plant quality.

Modular process plants (Roy, 2017) is a concept of flexible and adaptable production systems that can be set up at various locations. The modularization ( ProcessNet, 2016 ) allows for the distributed operation of processes and manufacturing of products through the combined efforts of multiple industrial parties.

Description. Process Plant Layout, Second Edition, explains the methodologies used by professional designers to layout process equipment and pipework, plots, plants, sites, and their corresponding environmental features in a safe, economical way. It is supported with tables of separation distances, rules of thumb, and codes of practice and ...

In this study, the natural gas dehydration process of the Sarkhun gas plant was simulated by steady state simulation software and the optimum separation temperature was determined. According to the simulation results, in order to improve processes performance, the glycol concentration should be increased from 85% to 92% and also …

Method. The overall method of selecting and assessing the impact of sequential process changes on a heat pump's performance consists of three phases: (1) selection of heat pump connections, (2) selection of process changes, and (3) assessment of the impact of process changes on the heat pump's COP. 2.1.

A full security analysis with respect to the scenarios coming from malicious manipulations of the control system requires the investigation of both the attack to the IT-OT network and the manipulation of the physical process system (the plant) (Fig. 1).The methodologies dedicated to process plant security vulnerability assessment (e.g. the …

Search ScienceDirect. Science of The Total Environment. Volume 738, 10 October 2020, 139747. ... iron ion and chloride anion, sulfate anion, nitrate anion, etc. Wastewater recycling process in steelmaking plant was complicated and consisted of flocculation process, precipitation, neutralization process and etc.

Requirements have been modeled in a mathematical programming model as constraints such as connectivity, pumping, safety, pipe routing, multi-floor arrangements, etc., to establish the optimal cost and safe plant layouts. This paper proposes to develop and utilize a MILP mathematical layout optimization model to help design and construct …

The process hazards analysis (PHA) in the pilot plant follows the OSHA PSM standards. The system is based on a framework that can ensure adequate hazards review and fulfill the PHA requirements. In a case study, this application has been successfully shown to be workable and practicable to manage process hazards in the pilot plant.

3. An improvement-type algorithm. It is widely accepted that optimal solutions for process plant layout are very difficult to be achieved. Current simultaneous models can only tackle systems with around 10 items while the industrial practice is expected to obtain good quality layouts with 30–40 units.

Journal of Hazardous Materials, 6 (1982) 249-260 249 Elsevier Scientific Publishing Company, Amsterdam - Printed in The Netherlands IMPROVING RISK ASSESSMENT METHODS FOR PROCESS PLANT R.A. COX Technica Ltd., 11 John Street, London WCIN 2EB (Gt. Britain) (Received July 6, 1981; accepted November 4, …

Maximizing Machinery Uptime. Volume 3pp. 3 - 630 • 2005. Machinery Component Maintenance and Repair. Volume 2pp. 1 - 668 • 1999. Machinery Failure Analysis and Troubleshooting. Volume 1pp. 1 - 680 • 1998. Improving Machinery Reliability. Volume 4pp. 3 - 700 • 1997. Major Process Equipment Maintenance and Repair.

Search ScienceDirect. Methods in Chemical Process Safety. Volume 6, 2022, Pages 525-560. ... Currently most of the process plants around the world are still operating at this level (i.e., Industry 3.0). Besides productivity, this automation also increased the reliability and safety of the assets. The concept of "Industry 4.0" was first …