Hazard Identification and Risk Analysis

A thorough Hazard Identification and Risk Analysis, or risk, system is the core element in the RBPS pillar of understanding hazards and risk. The chapter describes the meaning of risk for RBPS purposes, the attributes of a risk system, and the steps an organization might take to implement a robust program for identifying hazards and analyzing risk. Introduction to Hazard Identification and Risk Analysis

Information regarding Remote Isolation and Shut Off

For more in-depth information regarding understanding hazards and risk, refer to CCPS' Guidelines.

What to Do When Nothing Has Happened?

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 15, 2011
Often during a Layer of Protection Analysis (LOPA) or a Quantitative Risk Analysis (QRA) study, historical information indicates no occurrences of a...

A Work Process for Revalidating LOPAs and Other Risk Analyses

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
The Chemical Process Industry (CPI) has long recognized the necessity of periodically revalidating Process Hazard Analyses (PHAs), such as Hazard and...

Ignition of Dust Layers by Mechanical Sparks

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
Dust explosions represent a considerable safety risk in process industry. Statistical records of dust explosions show that 32.7 % of these explosions...

LOPA – Validating Human IPLs and Ies

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 14, 2011
Layer of Protection Analysis (LOPA) is a simplified risk assessment method that provides an order of magnitude estimate of the risk of a potential...

Using LOPA for Sil Assignment: A Tale of Two Plants

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 13, 2011
Two plants operated by the same company have ?identical? ammonium nitrate (AN) solution pump installations. Yet the LOPA teams concluded that the...

Modification of Risk Using Barrier Methodology

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 23, 2010
Risk assessments use frequency data mostly from generic sources, typically from the North Sea offshore environment or from process facility records...

Modeling Small Releases from Tanks

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 22, 2010
The methodologies in the chapter on “Dispersion Modeling” in the CCPS book Guidelines for Consequence Analysis of Chemical Releases, provide means...

Atmospheric Storage Tank Explosion Modeling

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 22, 2010
Many flammable products are usually stored in large vessels at atmospheric pressure. Ignition of an hydrocarbon-air mixture in such tanks can lead to...

Ensuring Consistency of Corporate Risk Criteria

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 22, 2010
The recently published CCPS text Guidelines for Developing Quantitative Safety Risk Criteria makes a strong case for corporations developing risk...

LOPA – Going Down the Wrong Path

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
Layer of Protection Analysis (LOPA) has quickly gained acceptance in the Chemical Processing Industries (CPI), and has risen to be one of the leading...

HAZOP, LOPA, SIL: Be Careful What You Ask for!

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
In recent years Process Safety Engineers have promoted the use of HAZOP to identify hazards and assess safeguards, followed by LOPA to identify if...

Fire Study of Melting Fiberglass Using FLUENT CFD Software

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
Thermal insulation is used in chemical plants primarily as a tool to prevent energy loss. However, if installed properly, an added benefit is that of...

Is It Really an Independent Protection Layer?

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
Layer of Protection Analysis (LOPA) is a simplified chemical process risk assessment tool that is used to determine if sufficient independent...

Lifecycle Physical Hazards of Polystyrene Foam Board

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
Polymer Foam Boards have been widely used for individual home and general building, from roofs and/or walls down to foundation, for example. On the...

Consistent Consequence Severity Estimation

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
LOPA, as a semi-quantitative analysis, often provides inconsistent results. This can be due to physical differences between units but often it is due...

LOPA and Human Reliability – Human Errors and Human IPLs

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
Layer of Protection Analysis (LOPA) is a simplified risk assessment method that provides an order of magnitude estimate of the risk of a potential...

Assessing the Burning Rate of Solid Oxidizers

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
A method for assigning solid oxidizers and products containing oxidizers to an NFPA Class was developed. The method consists of two reaction-to-fire...

Instrumented Protective Systems for Distillation Operations

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 21, 2010
Distillation is one of the most common unit operations in the chemical processing industry. Using relative volatility as a means of separating...

Sponsored Webinar: Layer of Protection Analysis (LOPA): When and Where?

Live Webinar
Live Wednesday, July 26, 2017 - 2:00pm-3:30pm
When is the best time to do Layer of Protection Analysis? Take this webinar to assess your options. In this 60-minute webinar, you’ll learn many facilitators have a preference about when to do LOPA - during the PHA/HAZOP, at the end of the PHA/HAZOP or independently of the PHA/HAZOP. You’ll...

Are Your Safeguards Fast Enough to Be Effective?

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 29, 2017
A number of design pitfalls must be avoided when allocating the process safety time during the specification of instrumented safeguards. A key...

Uncertain about Uncertainty

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 28, 2017
Key Words: Understand Hazard & Risk, Hazard Identification and Risk Analysis, Define probability; Subjective probability Abstract: It is well-...

The Facility Siting Cycle (Revalidation)

Conference Presentation
AIChE Spring Meeting and Global Congress on Process Safety
March 28, 2017
Facility siting is an assessment of occupied buildings given potential explosion, fire, and toxic hazards. As stated in 29 CFR Part 1910, it is...

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