Process Safety Management

Developing optimum safety and risk management systems, guidelines and standards, and audit protocols worldwide.

A proactive approach, coupled with properly planned and implemented safety and risk management systems can help you comply with local, state and federal PSM regulations, as well as minimize loss of life, environmental impact, equipment damage, citations and litigation.

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How We Can Help You

ioMosaic pioneered many of the current risk assessment techniques for processes that handle hazardous chemicals.

Our experts support every aspect to ensure that your facility runs safely and efficiently.

Expertise to help you minimize your exposure to fire, injury, property damage, and litigation.

Integrating best practices with cost-effective solutions to address program deficiencies.

Helping manage risk with facility siting studies, assessments and recommendations.

Senior knowledgeable engineers facilitate PHAs or DHAs in nearly all sectors of the process and processing industries.

Decades of experience leading incident investigations for process industry companies.

We prepare expert opinion reports and provide expert testimony for process incident cases.

Experienced engineers who have performed LOPAs on a wide range of facilities and terminals.

Our experts are at the forefront of pipeline Process Safety Management proficiency.

Proven track record of performing QRAs for facilities, pipelines and transportation routes.

Well versed in assisting global companies with their sustainability reporting communications.

Decades of experience mitigating hazards for the chemical and pharmaceutical industries.

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Featured Case Studies

 

Corporate Guidance On Risk Management

The chemical company of a large integrated energy company was developing a corporate standard for LOPA, which incorporated a risk ranking matrix. The company was interested in obtaining an independent review of the design of the risk matrix, and in benchmarking the underlying risk tolerability criteria with generally accepted industry norms.

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A large Canadian refinery was performing risk assessments to identify personnel, environmental, and operational hazards in order to satisfy legal and business requirements. This work was being done on a planned schedule, with each unit being reviewed annually. The challenge was to use Process Hazard Analysis (PHA) methodologies that provided an effective analysis appropriate to the particular unit to be studied and the potential hazards.
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When a tank car failed at a customer’s plant, a release of toxic gas occurred. Our client, the supplier of the chemical, was the subject of a class action lawsuit.
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A major pulp and paper manufacturing company in Mississippi determined that its process safety management (PSM) program had to do more than merely follow OSHA regulations; they wanted it to also be effective in preventing accidents.

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Featured Video

PSM Frequently Asked Questions

Does your facility need a PSM program? Is your PSM program effectively implemented?

If your facility uses, stores, manufactures, handles, or moves flammable or highly hazardous chemicals on site above the threshold quantity (TQ), OSHA does require PSM implementation. Learn the facts about process safety management.

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Our Team

Georges A. Melhem, Ph.D., FAIChE

President & CEO The founder of ioMosaic and internationally renowned expert in the areas of pressure relief and flare systems design, chemical reaction systems, process safety and risk analysis. Read more...

Neil Prophet

Senior Vice President and Partner He brings over 20 years of experience in pressure relief and flare systems design project management and engineering expertise for chemical, pharmaceutical and petrochemical companies. Read more...

Katherine Anderson, CCPSC

Senior Principal Consultant Experienced project leader in hazard identification, evaluation, functional safety, process safety and risk management. Read more...

John Barker, Ph.D.

Director The head of our international offices in the U.K. and the Kingdom of Bahrain and an expert in risk management for oil, gas and transportation. Read more...

Pamela M. Nelson, CCPSC

Principal Consultant She leads process safety projects for business units across the U.S., Canada, Thailand, China, and the U.K. Read more...

Marcel Amorós Martí

Director and Partner His expertise consists of a diverse range of industries from chemical and petrochemical to oil and gas and utilities. Read more...

Dianne Coon, CSP

Principal Consultant A CSP Certified Safety Professional with 32 years of experience in process safety and health, and safety and environment (HSE) management. Read more...

Charles Lea, P.E.

Director, Minneapolis Office Lead He directs a number of large technical projects across multiple offices and is also responsible for all project management in our Minneapolis office. Read more...

Featured Resources

Risk Considerations for Safe Process Design

Safe Design has Long Been a Priority in the Process Industries

Today, the process industries need to be certain that their stakeholders have confidence in how they manage the environmental, health, security, and safety implications of industrial activities. Read this white paper for a systematic, risk-based approach to safe design that can help to eliminate hazards that pose high risks from the process and help mitigate.

Read the White Paper

Addressing Hazardous Vapor Cloud Dispersions

A detailed risk-based approach is proposed for addressing flammable and toxic dispersions impacting occupied buildings. The approach is based on the results from a complete quantitative risk-based assessment (QRA), which provides the following information per each outcome impacting the target location under analysis: (1) individual frequency of occurrence; (2) outdoor concentration; (3) exposure time; and (4) indoor concentrations by considering building air infiltration. Exceedance curves per hazard type (flammability or toxicity) and per chemical can be generated, which allow the user to decide whether a target building should be introduced in the mitigation plan as per API Recommended Practice 752 and API Recommended Practice 753, or if the target location can be within the acceptable risk region. Additionally, the proposed approach allows the construction of dedicated FN curves per location being impacted by toxic dispersions. The results from the proposed approach allow decision-makers to decide if there is the need to install the most cost-effective risk reduction measures based on the identified target locations to be in an unacceptable risk region.

Introduction

This manuscript focuses on the impact of Loss of Containment scenarios (LOCs) of hazardous materials that could lead to flammable and toxic dispersions to portable and fixed buildings. The outcomes are based on the source term models which consider released material properties and behavior, conditions of the release and various phenomena that accompany the release of hazardous materials under such conditions (e.g., expansion, choked flow, two-phase flow, aerosolization, rainout, etc.) [1]. These models are important because they provide input data to the dispersion models and the accuracy from these models is dependent upon the accuracy in the source term computation. Detailed information on the mathematical source term and dispersion models can be found in reference [2].

During the development of the quantitative risk-based assessment, it is critical to properly locate all structures/buildings present in a process facility [3]. Accordingly, all identified LOCs [4] are analyzed and modeled following criteria established in references [5], [6], [7], [8] and [9]. Note that these cited references provide the knowledge for quantitative risk-based assessment development, which is the basis of the proposed approach [9]. In this manuscript, a risk-based approach is focused on identifying which occupied buildings in a process facility could be impacted by hazardous dispersions due to toxic and flammable releases is defined and characterized.


Featured Services

Quantitative Risk Assessment

Proven track record of performing QRAs for refineries, chemical plants, LNG facilities, pipelines and transportation routes. Read more...

Hazard Analysis (PHA/DHA)

Senior knowledgeable engineers facilitate PHAs or DHAs in nearly all sectors of the process and processing industries, either hands-on or remotely. Read more...

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