Jove
Visualize
Contact Us

Related Concept Videos

Hazard Rate01:11

Hazard Rate

474
The hazard rate, also known as the hazard function or failure rate, is a statistical measure used to describe the instantaneous rate at which an event occurs, given that the event has not yet happened. From a probabilistic perspective, it represents the likelihood that a subject will experience the event in a very small time interval, conditional on surviving up to the beginning of that interval. In terms of frequency, the hazard rate can be viewed as the ratio of the number of events to the...
474
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

350
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
350
Scale-Up Processes01:14

Scale-Up Processes

5
The scale-up of microbial fermentation processes is essential in industrial biotechnology, allowing the transition from laboratory-scale experiments to commercial-scale production while aiming to maintain product yield and quality. This process requires meticulous adjustment of equipment design, process parameters, and contamination control strategies to accommodate increasing culture volumes.At the laboratory scale, cultures are typically maintained in 1 to 10-liter glass or autoclavable...
5

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The characteristics of bio-oil produced from the pyrolysis of three marine macroalgae.

Bioresource technologyยท2010
See all related articles
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Video

Updated: Mar 19, 2026

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions
11:20

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions

Published on: February 21, 2017

7.1K

Fuzzy-based HAZOP study for process industry.

Junkeon Ahn1, Daejun Chang1

  • 1Graduate School of Ocean Systems Engineering, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro Yuseong-gu, Daejeon 34141, Republic of Korea.

Journal of Hazardous Materials
|June 20, 2016
PubMed
Summary
This summary is machine-generated.

This study introduces a fuzzy-based Hazard and Operability (HAZOP) study to better analyze process hazards. This method overcomes uncertainty, providing more sophisticated risk assessments than traditional approaches.

Keywords:
Fuzzy HAZOPFuzzy logicFuzzy risk matrixProcess industryRisk analysis

More Related Videos

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC
11:38

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC

Published on: May 10, 2016

12.8K
Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts
10:37

Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts

Published on: April 9, 2016

9.3K

Related Experiment Videos

Last Updated: Mar 19, 2026

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions
11:20

In Situ Visualization of the Phase Behavior of Oil Samples Under Refinery Process Conditions

Published on: February 21, 2017

7.1K
High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC
11:38

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC

Published on: May 10, 2016

12.8K
Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts
10:37

Procedure to Evaluate the Efficiency of Flocculants for the Removal of Dispersed Particles from Plant Extracts

Published on: April 9, 2016

9.3K

Area of Science:

  • Chemical Engineering
  • Risk Management
  • Fuzzy Logic Applications

Background:

  • Hazard and Operability (HAZOP) studies are crucial for process safety.
  • Traditional HAZOP methods struggle with inherent uncertainties in risk assessment.
  • Fuzzy logic offers a framework to handle imprecise and uncertain information.

Purpose of the Study:

  • To develop and evaluate a fuzzy-based HAZOP methodology for enhanced process hazard analysis.
  • To address the limitations of classical logic in quantifying risks with uncertainty.
  • To improve the precision and sophistication of risk assessment in industrial processes.

Main Methods:

  • Application of fuzzy theory to express and manage uncertain states in HAZOP analysis.
  • Selection of relevant process parameters and guidewords to define accident frequency and consequence.
  • Development of a fuzzy risk model using mean expected value, trapezoidal fuzzy numbers, IF-THEN rules, and center of gravity method.
  • Comparative analysis with conventional HAZOP on a cryogenic liquefied natural gas (LNG) testing facility.

Main Results:

  • Fuzzy logic effectively handles uncertainty, providing diverse risk values based on membership degrees.
  • The fuzzy-based HAZOP yielded more sophisticated risk evaluations compared to conventional HAZOP.
  • Accident frequency was identified as the most significant index for risk determination.
  • The fuzzy risk matrix effectively categorizes risks into significant, negligible, and those requiring reduction.

Conclusions:

  • Fuzzy-based HAZOP is a superior approach for analyzing process hazards, particularly in uncertain environments.
  • The methodology provides a more nuanced understanding of risk significance and informs risk reduction strategies.
  • This approach enhances the overall safety and reliability of industrial process operations.