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• April 30, 2025Enhancing process safety
As one of the driving principles behind our core value of Care, it sounds simple.
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• April 30, 2025Navigate to:

In practice, it drives us to manage risks in a proactive, disciplined way, with a focus on the inherent hazards associated with the vast equipment and complex processes that are essential to our business.
A process safety event could potentially impact our workforce, the community, and the environment. Because of this, we set a high bar for ourselves.
Our approach
Our objective is to help protect our people, communities, and the environment by successfully managing and enhancing process safety.
The primary purpose of process safety is to keep hydrocarbons, chemicals, and process water controlled and safely managed through all phases of our operations.
Our Operations Integrity Management System (OIMS) is the core of how we manage process safety risks.
Everyone at ExxonMobil plays a role in process safety excellence
Risk management strategies and higher-consequence process safety risks are stewarded by our Management Committee as part of our approach to enterprise risk management. Our Upstream, Product Solutions, and Low Carbon Solutions business lines develop and execute these strategies. Centralized support comes from the ExxonMobil Technology and Engineering Company and our Global Operations & Sustainability team.
OIMS establishes clear standards and expectations, with safeguards applied to the ways we design, operate, and maintain our sites. We manage and verify these safeguards through:
- Regular inspections.
- Ongoing maintenance.
- Competency demonstrations.
- Emergency preparedness.
In line with OIMS expectations, we also monitor the performance of our operated and non-operated assets (e.g., joint ventures). Where we see opportunities for improvement of our non-operated assets, we encourage operators to consider them.
We apply industry standards, including the API Recommended Practice 754 and the International Association of Oil & Gas Producers (IOGP) No. 456 Recommended Practice. Our process safety indicators classify and track incidents by severity from “Tier 1” to “Tier 3.” Tier 1 process safety events are analyzed through our “Learning from Incidents” process, and corrective actions are identified to guide further improvement. Our recently acquired Pioneer assets were brought into this process and began reporting internally in 2025 – see our Metrics and Data table1 for our reporting on prior years.
We discuss process safety events with multiple groups each year to help identify industry trends and apply learnings. Participating groups include the American Petroleum Institute (API), American Fuel and Petrochemical Manufacturers (AFPM), International Association of Oil & Gas Producers, and the American Chemistry Council. In addition, we are a founding member and remain active in the Advancing Process Safety Initiative, a collaboration between the AFPM and the API.
Our Enhancing Process Safety Program
In 2018, we launched a focused initiative to take process safety to the next level. We added to and improved upon the standards set by OIMS, enhancing our expectations related to:
- Leadership.
- Event learning.
- Human performance principles.
- Critical task execution.
- Scenario management.
Effective scenario management is key to preventing and mitigating process safety events and responding if one occurs. This includes understanding major hazards, things that may cause an incident, and the variety of ways events could unfold during and after an event.
People are our most important safeguard. Our human performance principles focus on the human factors that can contribute to safe operations or potentially lead to a safety incident. Our people play a vital role, and we offer mental health check-ins so that our employees can:
- Ask for help.
- Pause work if needed.
- Report issues to management.
In addition, our open-door communication procedures provide avenues for anonymous reporting of employee concerns.
Our zero-spill mindset
Our products are critical to global prosperity and quality of life, and we recognize that making them comes with a certain level of risk. That’s why we train our employees to have a zero-spill mindset, and we design and operate our facilities with that objective in mind.
Our objective is to prevent unplanned releases to the environment.
We are committed to:
- Prevention, mitigation, and elimination of spills from our operations.
- Maintaining processes, resources, and personnel to respond to spills, however unlikely they are to occur.
We actively manage spill reductions, and we are applying our learnings to our recent acquisitions. We seek to use best practices based on our own research and the work of others in the industry to continually reduce the number of spills.
Prevention
Our Spill Prevention Program sets procedures across the company to:
- Inspect and maintain equipment.
- Train our people on safe practices.
- Conduct practice drills and communicate lessons learned.
All types of spills are covered, using the overarching principles of our internal frameworks described in OIMS. The program addresses a wide range of scenarios, considering the many human and non-human factors that could potentially lead to a spill.
At our refineries, for example, our human-factor approach led us to create a best-practice guide for identifying and mitigating 17 high-risk elements.
Transport of our products is also an important focus. Millions of barrels of petroleum and chemical products move through thousands of miles of pipeline around the world. The integrity of this process is overseen through comprehensive management programs. In the United States, for example, our affiliate monitors and tests for corrosion and other integrity concerns with ground and air patrols, state-of-the-art detection systems, alarms, and other technologies to continuously control and monitor pipeline operations.
Emergency preparedness
We are prepared for a wide range of events, including natural disasters, pandemics, and operational incidents. Each of our facilities has access to trained responders and resources. Centralized and cross-functional teams develop and practice emergency response tactics through incident management teams and emergency support groups around the world.
Actively managing spill reduction, applying learnings to recent acquisitions2
Spills > Barrel (BBL)
Response
In case of a spill, we want to be ready. Rapid, comprehensive response is how we work to minimize impacts.
Our Regional Response Teams (RRTs) include employees from more than 30 countries, with subject matter experts, technical experts, and experienced responders from business lines and functions across the company. These teams use the work of our spill response research program, which was initiated more than half a century ago and remains unique in the industry.
Emergency simulations, like our “tabletop” and field exercises, help us ensure readiness. These are conducted in accordance with management guidelines and regulatory requirements.
Each year, we conduct comprehensive exercises that span several days. At sites around the world, emergency response teams and hundreds of employees, contractors, and specialists run through realistic, higher-consequence scenarios. These exercises often include participation from local authorities and agencies.
In May 2023, for example, the RRT worked with employees to assess and enhance Esso Exploration Angola’s incident management team’s ability to respond quickly and effectively. In total, 245 people were involved in the drill, from 22 countries, including more than 20 people from nongovernmental organizations or mutual aid partners.
In August 2024, the RRT gathered in Baytown for the largest exercise in the site’s 105-year history, simulating a worst-case discharge, as defined by regulations that cover the site. The exercise involved more than 240 people from inside and outside the company, including representatives from the Environmental Protection Agency, the Texas General Land Office, and both the Harris County and the Baytown Offices of Emergency Management.
Collaboration
We work with others in our industry to share best practices, improve capabilities, and facilitate global spill response and management. We also pursue innovative solutions and advance fundamental scientific understanding of spill response through collaboration. Research currently underway includes potential of chemical herders and next-generation dispersants for managing oil spills, assessing alternatives to natural gas flaring, and more.
Groups we work with include:
- Australian Marine Oil Spill Centre, focused on rapid containment and recovery of all oil types along the Australian coast.
- Marine Spill Response Corporation, the largest joint industry group focused solely on oil spill and emergency response in the United States, providing access to their STARs network of trained contractors in about 250 locations.
- Marine Well Containment Company, a not-for-profit focused on deepwater well containment response in the U.S. Gulf of Mexico. We are a founding member.
- Oil Spill Global Response Network, a global collaboration among oil-response companies to provide centers of expertise for spill preparedness, response, and recovery.
- Oil Spill Response Limited, an industry-owned spill-response cooperative with members representing more than two-thirds of the world’s oil production, and their Global Oiled Wildlife Response Service.
- Western Canada Spill Services Ltd., which supplements member companies’ programs with additional training and equipment.
- Oil Spill Combat Team, the largest spill response center in Indonesia.
- Eastern Canada Response Corporation, which provides services and equipment to ships and oil-handling facilities under Canadian law.
- Multi-Partner Research Initiative, bringing together government, academia, response organizations, oil companies, indigenous communities, and other experts worldwide.
Workplace security
Protecting our people at all levels of the organization is our top priority in security. Our security programs are risk-based, flexible, and responsive to the places we operate and comply with applicable laws.
Periodic security reviews at our sites address current and potential threats. Each assessment looks at factors such as:
- Location.
- Community relationships.
- Criminal activity.
- Political climate.
We monitor local conditions and keep detailed readiness plans for many risks, including:
- Emergency response.
- Evacuation and intruder response.
- Bomb threat response.
- Active shooter response.
We provide tailored guidance for employees in higher-risk countries with challenging security environments. Our teams continue to work to improve our risk management methodologies, threat-assessment capabilities, and technical security management processes through drills, training programs, and industry forums.
Cybersecurity
Attacks against other global companies in recent years highlight the need for all companies to maintain strong cybersecurity safeguards. Our multilayered approach to preventing and mitigating the risks of cyberattacks helps protect us against business disruptions and threats that could materially affect our data, facilities, operations, or the safety and privacy of our people.
We analyze potential threats and implement tools, policies, and architectures to address risk. We leverage industry standard frameworks, including the NIST Cybersecurity Framework, to identify potential gaps in our defenses, and we work with independent, third-party cybersecurity experts to help test and evaluate the strength of our cybersecurity program.
Our Form 10-K filing provides details about the management and scope of our cybersecurity program.
Data protection
We have comprehensive programs designed to protect the integrity and privacy of personal, corporate, and customer data. With respect to the handling of personal data, our data privacy program is designed to handle such information, including that of customers, suppliers, and employees, in a manner consistent with applicable laws. ExxonMobil’s data privacy program includes a code of conduct and data privacy practices that encompass common principles (e.g., purpose limitation, transparency, data security, accuracy of personal data, and data minimization) and are designed to provide simplified and consistent guidance to meet global data privacy requirements.
Training and business continuity
Awareness is one of the best defenses. That’s why cybersecurity education is a priority.
We perform annual training and conduct routine testing of cybersecurity awareness to help our people identify and respond to cybersecurity risks. This includes ongoing mock phishing and other exercises to reinforce safe behaviors.
We manage business continuity as a key component of our controls and OIMS to prepare us if an incident were to occur. Our business continuity plans (BCPs) include a suite of enablers that we can activate as needed.
Our cyber BCPs are regularly reviewed for compliance, performance, and opportunities for improvement. In addition, periodic drills help our workforce keep up with this evolving space while helping us evaluate our ability to maintain safe operations for critical business units.
Artificial Intelligence
We have a history of leveraging technology to drive business value. We consider potential security and safety risks of new and developing technologies.
The power of artificial intelligence (AI) technology, for example, can expand the capabilities of our workforce. AI has the potential to empower our employees to leverage their skills and, in doing so, boost operational efficiency and enhance our business capabilities. To bring AI-enabled solutions to our business at scale we:
- Test reliability, security, and performance.
- Develop tools and best practices.
- Gain exposure to emerging technologies and suppliers.
- Develop guardrails and our AI strategy for adoption at scale.
Our strategy brings our efforts together in a single ecosystem to help scale AI technology across the organization. Our strategy is built on six elements:
- Business-led: Reimagine our business functions and deliver outstanding customer experiences at lower costs.
- Talent: Equip people with AI skills and capabilities to envision and execute innovation.
- Operating model: Develop synergies as we find uses for AI across the company at pace and scale, while reducing costs.
- Technology: Provide the right tools and technology to address business needs and opportunities.
- Data: Continuously improve the quality and availability of our data to provide relevant insights and enhance decision making.
- Responsible AI: Based on industry standards like the NIST AI Risk Management Framework, our Responsible AI Principles guide our efforts in aspects related to safety, security, fairness, and privacy.
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FOOTNOTES:
- Includes Denbury data beginning on April 1, 2024.
- ExxonMobil data includes hydrocarbon, drilling fluid, and chemical spills greater than 1 barrel (bbl). Based on performance data as of March 12, 2025, including recent acquisitions (Denbury data beginning November 2, 2023, and Pioneer data beginning May 3, 2024).
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Images or statements of future ambitions, aims, aspirations, plans, goals, events, projects, projections, opportunities, expectations, performance, or conditions in the publications, including plans to reduce, abate, avoid or enable avoidance of emissions or reduce emissions intensity, sensitivity analyses, expectations, estimates, the development of future technologies, business plans, and sustainability efforts are dependent on future market factors, such as customer demand, continued technological progress, stable policy support and timely rule-making or continuation of government incentives and funding, and represent forward-looking statements. Similarly, emission-reduction roadmaps to drive toward net zero and similar roadmaps for emerging technologies and markets, and water management roadmaps to reduce freshwater intake and/or manage disposal, are forward-looking statements. These statements are not guarantees of future corporate, market or industry performance or outcomes for ExxonMobil or society and are subject to numerous risks and uncertainties, many of which are beyond our control or are even unknown.
Actual future results, including the achievement of ambitions to reach Scope 1 and 2 net zero from operated assets by 2050, to reach Scope 1 and 2 net zero in heritage Permian Basin unconventional operated assets by 2030, and in Pioneer Permian assets by 2035, to eliminate routine flaring in-line with World Bank Zero Routine Flaring, to reach near zero methane emissions from operated assets and other methane initiatives to meet ExxonMobil’s greenhouse gas emission reduction plans and goals, divestment and start-up plans, and associated project plans as well as technology advances, including in the timing and outcome of projects to capture, transport and store CO2, produce hydrogen and ammonia, produce lower-emission fuels, produce ProxximaTM systems, produce carbon materials, produce lithium, and use plastic waste as feedstock for advanced recycling; future debt levels and credit ratings; business and project plans, timing, costs, capacities and profitability; resource recoveries and production rates; planned Denbury and Pioneer integrated benefits; obtain data on detection, measurement and quantification of emissions including reporting of that data or updates to previous estimates and progress in sustainability focus areas could vary depending on a number of factors, including global or regional changes in oil, gas, petrochemicals, or feedstock prices, differentials, seasonal fluctuations, or other market or economic conditions affecting the oil, gas, and petrochemical industries and the demand for our products; new market products and services; future cash flows; our ability to execute operational objectives on a timely and successful basis; the ability to realize efficiencies within and across our business lines; new or changing government policies for lower carbon and new market investment opportunities, or policies limiting the attractiveness of investments such as European taxes on energy and unequal support for different methods of carbon capture; developments or changes in local, national, or international treaties, laws, regulations, taxes, trade sanctions, trade tariffs, and incentives affecting our business, including those related to greenhouse gas emissions, plastics, carbon storage and carbon costs; timely granting of governmental permits and certifications; uncertain impacts of deregulation on the legal and regulatory environment; evolving reporting standards for these topics and evolving measurement standards for reported data; trade patterns and the development and enforcement of local, national and regional mandates; unforeseen technical or operational difficulties; the outcome of research efforts and future technology developments, including the ability to scale projects and technologies such as electrification of operations, advanced recycling, carbon capture and storage, hydrogen and ammonia production, ProxximaTM systems, carbon materials or direct lithium extraction on a commercially competitive basis; the development and competitiveness of alternative energy and emission reduction technologies; unforeseen technical or operating difficulties, including the need for unplanned maintenance; availability of feedstocks for lower-emission fuels, hydrogen, or advanced recycling; changes in the relative energy mix across activities and geographies; the actions of co-venturers competitors; changes in regional and global economic growth rates and consumer preferences including willingness and ability to pay for reduced emissions products; actions taken by governments and consumers resulting from a pandemic; changes in population growth, economic development or migration patterns; timely completion of construction projects; war, civil unrest, attacks against the Company or industry, and other political or security disturbances, including disruption of land or sea transportation routes; decoupling of economies, realignment of global trade and supply chain networks, and disruptions in military alliances; and other factors discussed here and in Item 1A. 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SUPPLEMENTAL INFORMATION FOR NON-GAAP AND OTHER MEASURES
The Positioned for Growth in a Lower-Emission Future section of the Advancing Climate Solutions Report mentions modeled operating cash flow in comparing different businesses over time in a future scenario. Historic operating cash flow is defined as net income, plus depreciation, depletion and amortization for consolidated and equity companies, plus noncash adjustments related to asset retirement obligations plus proceeds from asset sales. The Company’s long-term portfolio modeling estimates operating cash flow as revenue or margins less cash expenses, taxes and abandonment expenditures plus proceeds from asset sales before portfolio capital expenditures. The Company believes this measure can be helpful in assessing the resiliency of the business to generate cash from different potential future markets. The performance data presented in the Advancing Climate Solutions Report and Sustainability Report, including on emissions, is not financial data and is not GAAP data.