ioMosaic California Office

California has the most stringent regulations in the nation; greater than federal OSHA.

Cal/OSHA is known to visit facilities more frequently than other states to conduct program quality reviews, perform investigations, and evaluate chemical releases. ioMosaic has decades of experience with many large, complex projects on the West Coast.

Need Help? Ask Us Your Questions

Have a Question About Cal/OSHA Process Safety Management Compliance?

Contact Us

How We Can Help You

Reducing costs and increasing accuracy in the design or revalidation of relief systems.

Information management solutions and application development services that bridge the gap between compliance and technology.

Reliable, efficient and affordable test plan development, testing and analysis.

Managing the risks via a thorough understanding of the design and key issues associated with LNG.

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

Offering a comprehensive range of safety, technology and risk management training.

Our Location


2001 Addison Street, 3rd Floor 
Berkeley, CA 94704 US


Tel: 510.646.0035
Fax: 832.553.7283


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...

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...

Featured Case Study


Pressure Relief System Revalidation and Mitigation of an Oil Refinery

A California oil refinery capable of refining 240 thousand barrels of crude oil per day needed to evaluate a vapor break-through scenario from a high-pressure vessel to a low-pressure vessel using dynamics. In their desire to ensure compliance with OSHA PSM regulations, the client retained ioMosaic Corporation to complete an evaluation. According to the OSHA Petroleum Refinery PSM National Emphasis Program (NEP), failure to document relief system design and design basis is one of the most common types of PSM non-compliance.

View Case Study
As a result of recent industrial incidents, a petroleum company desired to ensure the effluent from all relief devices in toxic or flammable service were routed to flares and/or another safe locations. The client wanted to evaluate the adequacy of the existing flare systems with the effluent from the atmospheric relief valves included, mitigate all existing flare systems issues, estimate the cost associated with modified piping, and evaluate potential high-integrity protection systems (HIPS).

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.

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.

Featured Resources

Featured Services

Emergency Relief System Design

From development of the industry’s most widely used PRFS software to serving in leadership roles on global PRFS forums, we have played a pivotal role in defining and implementing relief system best practices for corporations worldwide. Read more...

Quantitative Risk Assessment

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