Senior Engineer - Emergency Relief System Design & Adiabatic Calorimetry

Company Overview

Throughout our worldwide network of experts, clients and communities, we are renowned for our leadership in fire protection engineering – a legacy of responsibility we have proudly upheld since 1939. Today, our expertise extends broadly across closely related security and risk-based fields – from accessibility consulting and risk analysis to process safety, forensic investigations, security risk consulting, emergency management, digital innovation and more.

Our engineers and consultants collaborate to solve complex safety and security challenges, ensuring our clients can protect what matters most. For over 80 years, we have helped mitigate risks that threaten lives, property and reputations. Through technology, expertise and industry-leading research, we remain dedicated to our purpose of making our world safe, secure and resilient.

At Jensen Hughes, we believe that creating and sustaining a culture of trust, integrity and professional growth starts with putting our people first. Our employees are our greatest strength, and we value the unique perspectives and talents they bring to our organization.

Our wide range of Global Employee Networks connect people from across the organization, supporting career development and providing forums for individuals to share experiences on topics they're passionate about. Together, we are cultivating a connected culture where everyone has the opportunity to learn, grow and succeed together.

Job Overview

We are seeking a highly skilled and motivated Senior Engineer to lead Emergency Relief System (ERS) design projects. This role involves performing reactive chemical hazard analysis using advanced adiabatic calorimetry techniques. The position requires advanced technical knowledge in process safety, thermal runaway behavior, and two-phase vent sizing, with hands-on expertise using adiabatic reaction calorimeters such as PHI-TEC II, APTAC, and/or VSP2.

Responsibilities

• Lead the design and analysis of Emergency Relief Systems (ERS) in accordance with DIERS methodology, API 520/521, ASME B31.3, and other relevant industry standards.
• Operate and maintain the PHI-TEC II adiabatic reaction calorimeter to characterize thermal runaway and pressure generation behavior of reactive chemicals.
• Analyze calorimetry data to determine heat release rates, pressure rise rates, time to maximum rate (TMR), and vent sizing requirements.
• Perform two-phase flow and homogeneous equilibrium model (HEM) calculations to support design of rupture disks, pressure relief valves, and containment systems.
• Author clear and concise technical reports summarizing test results, ERS sizing calculations, and risk mitigation recommendations.
• Collaborate with clients, project managers, and multidisciplinary teams, fostering a respectful and inclusive working environment where diverse perspectives contribute to the best outcomes. (e.g. PHA, HAZOP, LOPA)
• Engage in business development activities to help grow and strengthen this service line.

Requirements and Qualifications

• Bachelor’s or Master’s degree in a relevant engineering discipline.
• Minimum 5 years of experience in process safety engineering, with a focus on ERS design and reactive hazard evaluation.
• Demonstrated success working in the consulting industry with diverse clients and project teams.
• Strong understanding of vent sizing methodology, two-phase flow, and reactive chemical systems.
• Proficiency with pressure relief sizing software tools.
• Excellent technical writing and communication skills, with the ability to convey complex information to varied audiences.
• PE license and/or CSP certification is a plus.

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