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| Question | Answer |
| AIChe | American Institute of Chemical Engineers |
| CCPS | Center for Chemical Process Safety |
| ANSI/ISA-91.00.01-2001 | Identification of Emergency Shutdown Systems and Controls That Are Critical to Maintaining Safety in Process Industries |
| IEC | International Electrotechnical Commission |
| IEC 61508 | Functional safety of electrical/electronic/programmable electronic safety-related systems |
| E/E/PES | Electric, Electronic and Programmable Electronic (Relay, Solid-State, and Software-Based systems) |
| ANSI/ISA-84.00.01-2004 Part 1, Clause 3 | Acronyms and Technical Terms |
| Whats the difference between IEC 61511 & ANSI/ISA-84.00.01-2004 | ANSI/ISA-84.00.01-2004 has a grandfather clause added to it (Part 1, Clause 1) |
| IEC 61508 | Focused for equipment manufacturers |
| SIL | Safety Integrity Level |
| SIS | Safety Instrumented Systems (Referred to as "Safety Interlock Systems" by the AIChE) |
| IEC 61508 | Functional Safety - Safety Related Systems |
| ISA Standard 84.00.01-2004 | Functional Safety: Safety Instrumented Systems for the Process Industry Sector |
| NFPA 85 | National Fire Protection Association Boiler and Combustion Systems Hazard Code |
| BMS | Burner Management System |
| API RP 556 | Recommended Practice for Instrumentation and Control Systems for Fired Heaters and Steam Generators (American Petroleum Institute, 1997) |
| API RP 14C | Recommended Practice for Design, Installation, and Testing of Basic Surface Safety Systems for Offshore Production Platforms (American Petroleum Institute, 2001) |
| OSHA (29 CFR 1910.119) | Process Safety Management of Highly Hazardous Chemicals |
| What did OSHA's letter to the ISA in 2000 state? | OSHA recognizes ANSI/ISA-84.01-1996 as “a recognized and generally accepted good engineering practice for SIS” and that if a company is in compliance with the standard “the employer will be considered in compliance with OSHA PSM requirements for SIS.” |
| Which way are the standards moving (Prescriptive to ....) | Standards are moving away from prescriptive standards and toward more performance-oriented requirements |
| SIF | Safety Instrumented Function |
| BPCS | Basic Process Control System |
| Basic Process Control System (As defined by: ANSI/ISA-91.00.01-2001) | The control equipment installed to perform the normal regulatory functions for the process (e.g., PID control and sequential control) |
| Emergency Shutdown System (As defined by: ANSI/ISA-91.00.01-2001) | Instrumentation and controls installed for the purpose of taking the process, or specific equipment in the process, to a safe state. This does not include instrumentation and controls installed for non-emergency shutdowns or routine operations. |
| Safety Critical Control (As defined by: ANSI/ISA-91.00.01-2001) | A control whose failure to operate properly will directly result in a catastrophic release of toxic, reactive, flammable or explosive chemical |
| What's the Difference between Process Control and Safety Control? | Process Control Systems are active and dynamic, therefore most faults are inherently self-revealing Safety Control Systems are passive or dormant, therefore many faults are not self-revealing |
| Demand Mode vs. Continuous Mode | Demand Mode: Systems that have infrequent demands placed on them (e.g., once per year) Continuous Mode: Systems that have frequent demands placed on them (e.g., brakes) |
| PFD | Probability of Failure on Demand |
| EUC | Equipment Under Control |
| IEEE | Institute of Electric and Electronic Engineers |
| NRC | Nuclear Regulatory Commission |
| HAZOP | HAZard and OPerability study |
| Alarm Systems | May be used to alert the operators that some form of intervention is required on their part |
| SIS | Safety Instrumented Systems: Automatically take a process to a safe state when specified conditions are violated, or take action to mitigate the consequences of an industrial hazard. |
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