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A system composed of sensors, logic solvers, final elements, and support systems (e.g., utilities, interfaces, and communications). The aeSolutions automation engineering team can design, construct, and implement automation systems. It starts with defining the automation requirements in the Front End Loading (FEL) stages of projects, as we all understand that the greatest influence over project success or failure comes from the earliest stages of conceptual design, long before the actual programming effort ever begins.​ Our systems group is comprehensive in its capability to provide transmitter-to-value engineering. Acronyms & Terms Glossary <- More Definitions Process Automation A system composed of sensors, logic solvers, final elements, and support systems (e.g., utilities, interfaces, and communications). The aeSolutions automation engineering team can design, construct, and implement automation systems. It starts with defining the automation requirements in the Front End Loading (FEL) stages of projects, as we all understand that the greatest influence over project success or failure comes from the earliest stages of conceptual design, long before the actual programming effort ever begins. Our systems group is comprehensive in its capability to provide transmitter-to-value engineering. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

Safety Instrumented Function (SIF) is a safety function with specified Safety Integrity Level (SIL) implemented by SIS to ensure the safe operation of a process. Pre-determined guidelines are used to allow a process to continue or to enter a safe state if said guidelines are violated. The hazard and risk assessments identify the need for Independent Protection Layers (IPLs) to bring the risks associated with the various hazard scenarios in line with corporate risk tolerance guidelines. Where one or more IPLs are determined to be SIFs aeSolutions has the experience and expertise to: - Confirm the SIL required for the SIF to avoid overdesign - Create a preliminary design for the SIF that conforms to ISA/IEC 61511 - Identify the failure rates and parameters needed to calculate the Probability of Failure on Demand (PFD) of the SIF - We use the most appropriate tool for calculating PFDs (or use the tool the client requires); for complex SIFs we can use Fault Tree Analysis for the calculations - Optimize the SIF to meet the desired proof test interval and spurious trip frequency - Recommend specific field devices for the SIF - Document the calculations including the data and parameters used Acronyms & Terms Glossary <- More Definitions Safety Instrumented Function SIF Safety Instrumented Function (SIF) is a safety function with specified Safety Integrity Level (SIL) implemented by SIS to ensure the safe operation of a process. Pre-determined guidelines are used to allow a process to continue or to enter a safe state if said guidelines are violated. The hazard and risk assessments identify the need for Independent Protection Layers (IPLs) to bring the risks associated with the various hazard scenarios in line with corporate risk tolerance guidelines. Where one or more IPLs are determined to be SIFs aeSolutions has the experience and expertise to: - Confirm the SIL required for the SIF to avoid overdesign - Create a preliminary design for the SIF that conforms to ISA/IEC 61511 - Identify the failure rates and parameters needed to calculate the Probability of Failure on Demand (PFD) of the SIF - We use the most appropriate tool for calculating PFDs (or use the tool the client requires); for complex SIFs we can use Fault Tree Analysis for the calculations - Optimize the SIF to meet the desired proof test interval and spurious trip frequency - Recommend specific field devices for the SIF - Document the calculations including the data and parameters used Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

An interlock system is a safety mechanism that takes certain actions when specific conditions are met (to prevent undesirable or hazardous events). Interlocks are used to control equipment operations, ensuring safe and correct sequencing to prevent accidents. Acronyms & Terms Glossary <- More Definitions Interlock System An interlock system is a safety mechanism that takes certain actions when specific conditions are met (to prevent undesirable or hazardous events). Interlocks are used to control equipment operations, ensuring safe and correct sequencing to prevent accidents. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

A hypothetical explosion, fire, or toxic event that has the potential maximum consequence to the occupants of the building under consideration from among the major scenarios evaluated. The major scenarios are realistic and have a reasonable probability of occurrence considering the chemicals, inventories, equipment and piping design, operating conditions, fuel reactivity, process unit geometry, industry incident history, and other factors. Each building may have its own set of MCEs for potential explosion, fire, or toxic material release impacts. Maximum Credible Events (MCEs) are considered during facility siting studies conducted by aeSolutions' experienced modelers. to help companies identify the flammable and/or toxic consequences and impacts to receptors due to a chemical release. Acronyms & Terms Glossary <- More Definitions Maximum Credible Event (MCE) A hypothetical explosion, fire, or toxic event that has the potential maximum consequence to the occupants of the building under consideration from among the major scenarios evaluated. The major scenarios are realistic and have a reasonable probability of occurrence considering the chemicals, inventories, equipment and piping design, operating conditions, fuel reactivity, process unit geometry, industry incident history, and other factors. Each building may have its own set of MCEs for potential explosion, fire, or toxic material release impacts. Maximum Credible Events (MCEs) are considered during facility siting studies conducted by aeSolutions' experienced modelers. to help companies identify the flammable and/or toxic consequences and impacts to receptors due to a chemical release. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

A process that evalutes equipment and/or the logic solver and associated software together during and after the assembly process to ensure it satisfies the requirements of the design specifications and safety requirement specification (SRS). FAT is typically conducted to assess for any deviations or abnormalities during testing. The ISA/IEC 61511 standard (Clause 13) requires that the need for a FAT should be identified during safety planning for a project, and also provides guidance on how a FAT should be planned and conducted. aeSolutions SIS engineers have the experience to develop these plans, oversee their execution as an independent 3rd party, or execute these tests. aeSolutions operates its own FAT lab -- a 10,000 square foot FM approved and UL 508a certified panel fabrication and testing facility -- to ensure any potential panel issues are resolved prior to shipping the system. Acronyms & Terms Glossary <- More Definitions Factory Acceptance Testing (FAT) A process that evalutes equipment and/or the logic solver and associated software together during and after the assembly process to ensure it satisfies the requirements of the design specifications and safety requirement specification (SRS). FAT is typically conducted to assess for any deviations or abnormalities during testing. The ISA/IEC 61511 standard (Clause 13) requires that the need for a FAT should be identified during safety planning for a project, and also provides guidance on how a FAT should be planned and conducted. aeSolutions SIS engineers have the experience to develop these plans, oversee their execution as an independent 3rd party, or execute these tests. aeSolutions operates its own FAT lab -- a 10,000 square foot FM approved and UL 508a certified panel fabrication and testing facility -- to ensure any potential panel issues are resolved prior to shipping the system. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

Facility siting studies are used to ascertain location based risks for a plant and ensure that occupied buildings are located at a safe distance from process units. A Facility Siting Analysis is intended to evaluate the potential hazards and consequences of uncontrolled releases of flammable and toxic substances; to assess their potential for injuring the occupants of fixed and temporary structures on or offsite; to identify existing safeguards; and to determine measures to reduce the risk posed by these potential events. aeSolutions has trained facilitators to execute the hazard recognition and risk reduction process and experienced modelers that apply the appropriate methodology in line with API 752/753 and industry best management practices for Facility Siting. We provide results that allow your site leadership team to allocate resources more effectively to minimize facility siting risks. Acronyms & Terms Glossary <- More Definitions Facility Siting Study Facility siting studies are used to ascertain location based risks for a plant and ensure that occupied buildings are located at a safe distance from process units. A Facility Siting Analysis is intended to evaluate the potential hazards and consequences of uncontrolled releases of flammable and toxic substances; to assess their potential for injuring the occupants of fixed and temporary structures on or offsite; to identify existing safeguards; and to determine measures to reduce the risk posed by these potential events. aeSolutions has trained facilitators to execute the hazard recognition and risk reduction process and experienced modelers that apply the appropriate methodology in line with API 752/753 and industry best management practices for Facility Siting. We provide results that allow your site leadership team to allocate resources more effectively to minimize facility siting risks. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

A Safety Critical Element (SCE) is a component or system whose failure could lead to a major accident or significantly impact safety. SCEs are subject to rigorous monitoring, maintenance, and testing to ensure their integrity and reliability. Acronyms & Terms Glossary <- More Definitions Safety Critical Element (SCE) A Safety Critical Element (SCE) is a component or system whose failure could lead to a major accident or significantly impact safety. SCEs are subject to rigorous monitoring, maintenance, and testing to ensure their integrity and reliability. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

Note: ISA 84 was a previous edition of the standard. Please see ANSI ISA-16511 (IEC 61511) ANSI/ISA-16511 (IEC 61511) is an industry standard for best practices related to safety instrumented systems (SIS), Covering over the activities involved in the design, operation and maintenance of instrumented systems, from sensor through final element, used to achieve functional safety in the process industries. Acronyms & Terms Glossary <- More Definitions IEC 61511 - ISA 84 Note: ISA 84 was a previous edition of the standard. Please see ANSI ISA-16511 (IEC 61511) ANSI/ISA-16511 (IEC 61511) is an industry standard for best practices related to safety instrumented systems (SIS), Covering over the activities involved in the design, operation and maintenance of instrumented systems, from sensor through final element, used to achieve functional safety in the process industries. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

The likelihood of occurrence of an event or an event sequence during an interval of time. Probability is expressed as a dimensionless number ranging from 0 to 1. Acronyms & Terms Glossary <- More Definitions Probability The likelihood of occurrence of an event or an event sequence during an interval of time. Probability is expressed as a dimensionless number ranging from 0 to 1. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

A failure that occurs at a random time is called a random failure. Random failures are non-deterministic by nature but they follow a probability distribution for failure, which is used to calculate probability for such a failure from historical data and testing. Acronyms & Terms Glossary <- More Definitions Random Failure A failure that occurs at a random time is called a random failure. Random failures are non-deterministic by nature but they follow a probability distribution for failure, which is used to calculate probability for such a failure from historical data and testing. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

Common Mode Failure is a Failure causing coincident failures in multiple systems on two or more separate channels in a redundancy system, leading to system failure. This state may result from one or more failure events. Acronyms & Terms Glossary <- More Definitions Common Mode Failure Common Mode Failure is a Failure causing coincident failures in multiple systems on two or more separate channels in a redundancy system, leading to system failure. This state may result from one or more failure events. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.

Dispersion modeling is a mathematical simulation used to predict how pollutants, chemicals, or other particles spread and disperse in the air or water. It helps assess the environmental impact of emissions and guides regulatory compliance by predicting concentrations in specific areas. Acronyms & Terms Glossary <- More Definitions Dispersion Modeling Dispersion modeling is a mathematical simulation used to predict how pollutants, chemicals, or other particles spread and disperse in the air or water. It helps assess the environmental impact of emissions and guides regulatory compliance by predicting concentrations in specific areas. Our Services What Are Tomorrow's Leaders Learning From Us Today? A Lesson in Ethical Leadership Leaders face constant pressure to move fast and hit targets. The risk isn't a single bad decision, it's the small compromises that start to look reasonable. What are tomorrow's leaders learning from watching how we handle that pressure today? Whitepaper: The Courage to Intervene | Developing Ethical Leadership in the Next Generation of Process Safety Professionals As the process industries experience the “great shift change,” developing the next generation of leaders requires more than technical competence. It demands ethical courage and the ability to influence others to uphold process safety under pressure. This paper explores how ethical decision-making and leadership behaviors can be intentionally developed through structured case-based learning derived from real engineering failures. aeSolutions Recognized with 2026 CSIA Social Responsibility Award aeSolutions is proud to share that we were recognized with the 2026 Social Responsibility Award at the 2026 CSIA Awards, held during the Control System Integrators Association Conference in Baltimore, Maryland.