Installation of an Intrinsic Safety (IS) System
By the end of this training, successful participants will be able to:
- Describe the components and characteristics of an intrinsically safe system
- Use intrinsic safety terminology correctly
- Navigate intrinsic safety Standards
- Interpret markings used to communicate elements of an IS system
- Select and match proper safety barriers with IS devices
- Verify an intrinsically safe system
- Describe installation requirements and IS system maintenance to ensure safety and compliance
Engineers, designers, installers and others who need to understand the complexities of intrinsic safety and who wish to apply the concepts involved to real-life scenarios.
Introduction to Intrinsic Safety (IS) Systems
- What is intrinsic safety
- Components and characteristics of an IS system
- Applications of IS, advantages and disadvantages of this protection technique
- How intrinsic safety helps protect circuits in hazardous locations
- Ex markings and applicable Standards
- Levels of protection (Ex ia, Ex ib, Ex ic)
- Equipment Protection Level (EPL) achieved by intrinsic safety
- Fault applications
- Definition of important terms in intrinsic safety
Zener Diodes & Galvanic Isolators
- Fundamentals of associated apparatus
- Basic circuitry and its functions
- Safety components
- Earthing requirements
- Safety barrier selection
- Comparison of Zener Diodes & Galvanic isolators
- Entity Parameters (Uo, Io, Po, Co, Lo)
- Fault consideration
- Selecting a safety barrier for a given application
- Intrinsically safe system using one safety barrier
- Intrinsically safe systems using more than one safety barriers (IEC 60079-25)
- Type of cables for intrinsically safe system
- Entity Concept verification and connection of the IS barrier and IS field device
- Cable inductance calculation & cable capacitance calculation
Installation and Maintenance of IS Systems
- Control Drawing and Descriptive System Document
- Wiring installation and separation from other non-IS wiring
- NEC, CEC and IEC 60079-14 wiring installation requirements for intrinsic safety systems
- The importance of earthing and grounding
- Practical rules for maintenance and inspection of IS assemblies
Questions and answers; definition of terms and concepts
Self-Administered Test: Application of terms, definitions, and concepts; Case Study that incorporates topics covered in this course
This one-day course is focused on the proper installation of an IS system. It begins with an overview of the intrinsic safety protection technique, the advantages and disadvantages of this method and how intrinsic safety helps protect circuits in hazardous locations. This course helps participants to select safety barriers for a given design, as well as how to verify, inspect and maintain an IS system. Emphasis is on learning the fundamentals, in order to promote compliance with safety requirements, given the hazardous nature of the environment.
This course covers the knowledge required to select a certified safety barrier for a given application and how to connect it to IS field devices. It is focused specifically on the proper installation of an intrinsically safe system, which is critical to its effectiveness.
Instructor-led in a virtual classroom. Delivery provides a blend of theoretical knowledge and real-life examples of theory at work when designing an intrinsically safe system. Case studies are used to encourage application-oriented thinking to hazardous environments.
A self-administered test that tests theoretical knowledge as well as the ability to apply it to case scenarios.
Access to Standards and codes is helpful but not mandatory. A calculator is required.