Automatic HAZOP analysis method for unsteady operation in chemical based on qualitative simulation and inference

Zhang, Yuliang; Zhang, Wentao; Zhang, Beike

doi:10.1016/j.cjche.2015.10.004

Cited by 13 publications

(6 citation statements)

References 16 publications

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“…Hazop methodology also studies the effects of the deviations from design conditions. The most common bottom-up HAZID technique is represented by HAZOP [47], with a widespread use in industry [48][49][50][51][52].…”

Section: Hazopmentioning

confidence: 99%

Implementation of Food Safety Management Systems along with Other Management Tools (HAZOP, FMEA, Ishikawa, Pareto). The Case Study of Listeria monocytogenes and Correlation with Microbiological Criteria

Lee¹,

Daraba

Voidarou

et al. 2021

Foods

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The food industry’s failure in planning and designing of and in implementing a Food Safety Management System and its foundation elements leads, in most instances, to compromised food safety and subsequent foodborne illness outbreaks. This phenomenon was noticed, worldwide, for all food processors, but with a much higher incidence in the medium- and small-sized food processing plants. Our study focuses on the importance of Food Safety Management System (FSMS), Critical Control Points Hazard Analysis (HACCP) and the Prerequisite Programs (PRPs) as the foundation of HACCP, in preventing foodborne outbreaks. For emphasis, we make use of the example of organizational food safety culture failures and the lack of managerial engagement which resulted in a multi-state listeriosis outbreak in USA. Moreover, we correlate this with microbiological criteria. Implementation of food safety management systems (ISO 22000:2018) along with incorporation of management tools such as HAZOP, FMEA, Ishikawa and Pareto have proved to be proactive in the maintenance of a positive food safety culture and prevention of cross-contamination and fraud.

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Section: Hazopmentioning

confidence: 99%

Implementation of Food Safety Management Systems along with Other Management Tools (HAZOP, FMEA, Ishikawa, Pareto). The Case Study of Listeria monocytogenes and Correlation with Microbiological Criteria

Lee¹,

Daraba

Voidarou

et al. 2021

Foods

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show abstract

“…The crushing test results after "horizontal" fixation are greatly affected by gravity. At the same time, the test results of the root in a free state can no longer accurately reflect the stress and deformation of the stem in the process of fruit fracture; Li et al [10] designed a plant fixation test bench for simulating the growth posture of pineapple in the field and a recyclable split pineapple plant monomer model, which solved the problems of long cycle, difficulty and slow harvest test of field pineapple planting, and created an indoor all-weather harvest test platform. But it only provided a functional test carrier, because the difference of physical characteristics between the model and the real object needs to be tested and corrected; Zhang et al [11,12] developed an automatic pineapple picker.…”

Section: Introductionmentioning

confidence: 99%

Fracture mechanism and separation conditions of pineapple fruit-stem and calibration of physical characteristic parameters

Li,

He,

Yue

et al. 2023

International Journal of Agricultural and Biological Engineering

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At present, the research on the physical composition and properties of pineapple plants is scarce, and the uncertainty of fruit picking method is the key bottleneck factor hindering the research and development of pineapple harvesting machinery. Based on the statistics of survey data from many places, this paper analyzes the fruit-stem fracture mechanism and the theoretical conditions for optimal separation through structural modeling, mechanical behavior analysis and function judgment. On this basis, the "pineapple plant fixation bench" and "fruit-stem bending separation torque test equipment" were developed, and large-size, small-size tests and random optimization tests were carried out successively. The test results showed that the larger of the stem-stalk fixation distance, the more torque and fracture starting angle required for fruit fracture would increase, and the change range was small when the stem-stalk fixation distance was within 50 mm, and the probability of brittle fracture and complete separation was very high. When the space between the fracture section and the fruit-stem connecting point is about 5mm, the range of bending moment value required for the fruit-stem fracture is 1.88 to 2.77 N•m, the range of fracture starting angle is 12.2° to 18.1°, and the angular travel range during the separation process is 82.9° to 87.5°. When the stem-stalk fixation distance is about 15 mm, it is the best fruit-stem separation condition and the breaking torque measured in the verification test is about 2.76 N•m. The fracture starting angle is about 13.8°, the maximum prediction error is 13.1%, and the elastic modulus near the fruit-stem joint ranges from 16.1 to 23.9 MPa. This conclusion can provide an important design basis for the research and development of pineapple field picking robot and harvesting equipment.

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“…In order to maximize the benefits of chemical companies under the premise of ensuring safety, the long‐term stable operation of coal gasification process and production equipment is the goal that every enterprise is eager to achieve. However, in the actual production process, many uncertain factors will interfere with the normal operation of gasification system, resulting in the decline of gasification performance and eventually lead to the emergence of abnormal working conditions, posing a threat to industrial safety production …”

Section: Introductionmentioning

confidence: 99%

“…However, in the actual production process, many uncertain factors will interfere with the normal operation of gasification system, resulting in the decline of gasification performance and eventually lead to the emergence of abnormal working conditions, posing a threat to industrial safety production. 4,5 Sensitivity analysis refers to finding out the parameters that have an important influence on the model output from many uncertain parameters. 6 For the coal gasification process, it is of great significance for industrial production to classify the parameters according to the effect of gasification parameters on gasification results.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity and safety boundary Analysis of Opposed Multi‐Burner Coal Water Slurry Gasification System

Zhang

Dai

et al. 2019

Int J Energy Res

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Summary Taking the opposed multi‐burner (OMB) coal water slurry (CWS) gasification system as the simulation object, based on the gasification process flow‐path and the flow field distribution characteristics in the gasifier, the model of CWS gasification system is established by using the chemical simulation software UniSim Design, the simulation results are in good agreement with the industrial data. On this basis, the Morris method is used to analyze the sensitivity of gasification parameters, and the response surface between coal gasification performance index and sensitive parameters is constructed by using the response surface method. The sensitivity of different gasification parameters and the impact of key sensitive parameter interactions on gasification performance indicators is investigated. The results show that the gasification parameters have different sensitivities for different responses. When the operating temperature range of the gasifier is limited to 1212°C to 1400°C and the syngas water‐gas ratio is in the range of 1.0 to 1.4, there is a safe boundary for oxygen‐coal ratio and CWS concentration. In actual production, the relevant parameters should be avoided to deviate from the safety region. This article provides a reference for the safe and stable operation of actual industrial production.

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Automatic HAZOP analysis method for unsteady operation in chemical based on qualitative simulation and inference

Cited by 13 publications

References 16 publications

Implementation of Food Safety Management Systems along with Other Management Tools (HAZOP, FMEA, Ishikawa, Pareto). The Case Study of Listeria monocytogenes and Correlation with Microbiological Criteria

Implementation of Food Safety Management Systems along with Other Management Tools (HAZOP, FMEA, Ishikawa, Pareto). The Case Study of Listeria monocytogenes and Correlation with Microbiological Criteria

Fracture mechanism and separation conditions of pineapple fruit-stem and calibration of physical characteristic parameters

Sensitivity and safety boundary Analysis of Opposed Multi‐Burner Coal Water Slurry Gasification System

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