Price: $2,999.00

Length: 3 Days
Print Friendly, PDF & Email

Intrinsic Safety Training by TONEX


Intrinsic Safety Training by TONEX covers all aspects of Intrinsic safety principals and prevention techniques and methods to avoid and prevent explosions from occurring. Learn about Intrinsic Safety  ATEX Directives, IECEx, NEX,CSA, MSHA and OSHA guidelines and how to ensure that the energy transferred to a hazardous area and location is controlled and is well below the levels to trigger an explosion.

Intrinsically Safe (I.S.) is usually used as a term to describe products destined for a possible explosive area. “Intrinsically Safe” (IS) and Nonincendive are also  referring to protection levels for safe operation of electronic equipment in various explosive atmospheres.

The hazardous location ratings are also divided into Class, Division, and Group to indicate the existence of flammable gases or vapors, ignitable dust, fibers, or filings under normal or unlikely conditions of operation to be used in safe operation in hazardous areas, particularly around petro-chemicals, flammable gasses and dusts.

Intrinsic Safety Training is a 3 day course is designed for engineers and non-engineers who are working with intrinsically safe equipment or anyone else who is interested oto gain knowledge of Intrinsic Safety subject and skills on new methods of achieving safety.

Why use TONEX for intrinsic safety training?
Intrinsic Safety Training course is designed to teach you how to plan, analyze, design, test, verify & validate,  and document effectively, and get ready certification.

Intrinsic safety is considered as a requirement that may be applicable to devices that are being operated in areas with flammable gases or fuels. An intrinsically safe piece of equipment won’t ignite flammable gases.

Learning Objectives

Upon completion of this course, the attendees will be able to:

  • Concisely define what Intrinsic Safety is
  • List basic hazards associated with the use of electricity near flammable gases, vapors and dusts
  • Explain the value proposition behind protection techniques
  • Discuss the merits and downsides of Intrinsic Safety
  • Discuss the business and technical considerations for Intrinsic Safety including savings, reliability and flexibility
  • List legal requirements and recommendations of the various Codes of Practice in relation to gases and dusts
  • Describe Intrinsic Safety and where it fits in control safety and design techniques applied to various industries
  • Discuss the basic guidelines for installation and maintenance in hazardous locations
  • List  the principles of how the degree of hazard can be assessed by the classification of hazardous areas
  • Explain what types of apparatus may be used in particular locations
  • Discuss how electrical and instrument equipment can be treated and made safe
  • Describe Safety Integrity Levels (SIL)
  • List hazardous (Classified) location identification
  • Conversationally address Intrinsic Safety concerns and protection techniques
  • Explain the importance of Intrinsic Safety solutions
  • Specify and proof a system for intrinsic safety
  • Give examples of Intrinsic Safety techniques and solutions
  • Give examples of control safety and design techniques applied to electrical equipment and wiring for hazardous environments
  • Specify I.S. requirements based on Zones (EX ia, EX ib, EX ic), classes, Divisions, etc.


 Intended Audience

This course is intended for those interested in theory behind Intrinsic Safety, hazardous area protection methods and techniques.

Course Agenda

What is Intrinsic Safety?

  • Introduction to Intrinsic Safety
  • Protection Layers: Hazardous Atmosphere
  • Explosion Proof (XP)
  • Isolating the explosive gases and dust from a device
  • Oxygen
  • Flammable Substanc
  • Ignition Source
  • Potential explosion sources.
  • Type of hazards
  • Hazardous Area
  • Non-hazardous (safe) area
  • Potentially hazardous material
  • Degree of hazard
  • Ignition and explosion protection principles
  • Explosion pressure
  • Sources of Ignition
  • Ignition temperature of the substance
  • Ignition by spark
  • Ignition by Hot Surface
  • Flammability characteristics
  • Flammable gases, vapors and dusts
  • Gas characteristics
  • Quantities to be explosive or ignitable.
  • Presence of combustible dust
  • Accidental rupture, breakage, or abnormal operation
  • Hazardous area classification
  • Temperature classification
  • Apparatus grouping
  • Flameproof concept

Classification by Classes, Divisions and Groups

  • Classification by Zones
  • Hazardous Areas
  • Combustible dust in Class ll locations
  • What is Intrinsically Safe (I.S.)?
  • Intrinsically Safe (I.S.) Systems Overview
  • conductivity of the hazardous substance
  • ATEX Directive 94/9/EC
  • Underwriters Laboratories (UL)
  • National Electrical Code (NEC)
  • Canadian Standards Association (CSA)
  • Canadian Electric Code (CEC)
  • IECEx, namely IEC 60079
  • Factory Mutual Research Corporation (FM)
  • Mine Safety and Health Administration (MSHA)

Electricity as a Source of Ignition

  • Sources of ignition
  • Sparks
  • Heat
  • Explosive limits for materials
  • Ignition Temperature
  • Auto-ignition temperature
  • Spontaneous ignition temperature
  • Flashpoint Definition
  • Area Classification
  • Nature of the Hazard
  • Locations of hazard
  • Probability of presence
  • Requirement for plant classification
  • Gas Classification
  • Ignition Temperature
  • Area classification
  • Requirement for equipment classification
  • Apparatus Group
  • Temperature classification
  • Area classification in IEC/European countries
  • Area classification in North America
  • Methods of Explosion Protection

Cables, Barriers and Earthing

  • Power Supply Assessment
  • Energy storage assessment
  • capacitance and inductance,
  • design methods
  • safety components
  • zener shunt, diodes for blocking and inductance control, resistors with capacitance
  • safety component rating and de-rating (zeners)
  • Separation & Segregation
  • Creepgage, clearance, tracks, encapsulation, CTI
  • Thermal Assessment
  • small component rules, thermal calculations, potting, testing
  • Subject Review

Introduction to Standards Technical Principles

  • European Directives
  • The Directive 94/9/EC (ATEX 95)
  • The Directive 99/92/EC (ATEX 137)
  • Zone Classification
  • Minimum Ignition Energy and Explosion Group
  • Minimum Ignition Temperature and Temperature Classes
  • Types of Protection
  • Application and Combination of Types of Protection “d” and “e”
  • Applications of Type of Protection “Intrinsic Safety”
  • Applications of Type of Protection “c”
  • Installation and Operation of Electrical Equipment
  • Duties of Installer, Manufacturer and Operator
  • Classification of Zones and Selection of Apparatus
  • Methods of Installation
  • Maintenance
  • Regulations
  • Potentially Explosive Atmospheres
  • Dangerous Substance and Explosive Atmospheres Regulations
  • Hazardous Areas & Protection Techniques
  • Risk Assessment & Hazardous Area Classification
  • Certifying agencies
  • Factory Mutual Research Corporation
  • Underwriters Laboratories (UL)
  • EU the standard for intrinsic safety certification
  • ATEX Directive
  • IECEx standards

Intrinsic Safety and Hazardous Areas

  • IECEx & ATEX Certification
  • SIL/Safety Systems verification
  • Component safety fraction analysis
  • Site Safety (ATEX137/DSEAR)
  • Ex Equipment Inspections
  • Plants, assemblies and skids
  • Intrinsically Safe Approved Apparatus
  • Open Circuit Voltage
  • Short Circuit Current
  • Unprotected Inductance
  • Unprotected Capacitance
  • Open Circuit Voltage (barrier)
  • Short Circuit Current (barrier)
  • Allowed Inductance (barrier)
  • Allowed Capacitance (barrier)
  • Inductance of interconnecting wiring
  • Capacitance of interconnecting wiring

Intrinsic Safety Circuit Design

  • Limiting Energy To The Field Device
  • Intrinsically Safe
  • Apparatus
  • Switching
  • 2-wire transmitters
  • Thermocouples & RTDs
  • Load cells
  • Solenoid valves
  • Potentiometers
  • LEDs
  • I/P transducers
  • Other devices
  • Hazardous Locations and Methods of Protection
  • Intrinsic safety as an energy-limitation protection  technique
  • Explosion Protection Fundamentals
  • Ignition  Energy
  • Fuel
  • Oxidizer
  • Explosive Mixture Characteristics
  • Explosion characteristics of an energy source
  • Minimum Ignition Energy (MIE)
  • Lower Explosive Limit (LEL)
  • Upper Explosive Limit (UEL)
  • Understanding Hazardous Areas
  • 4-20 mAdc Two Wire Transmitters
  • Thermocouples
  • Strain Gages
  • Pressure, Flow, & Level Switches
  • I/P Converters
  • Solenoid Valves
  • Proximity Switches
  • Infrared Temperature Sensors
  • Potentiometers
  • LED indicating lights
  • Magnetic pickup flowmeters

Intrinsic Safety Area Classification

  • Classes
  • Class I, II and III
  • Gases and Vapors
  • Combustible Dusts
  • Class
  • Class l
  • Class ll
  • Class lll
  • Divisions
  • Division 1 – Normal Situation
  • Division 2 – Abnormal Situation:
  • Groups
  • Group A, B, C & D Gases and vapors in Class l locations
  • Groups E, F & G Combustible dust in Class ll locations

Intrinsic Safety Categories

  • EX designation
  • ATEX (Atmosphere -Explosive)
  • 94//EC Directive
  • New: ATEX 95 (Old: ATEX 100a)
  • 1999/92/CE Directive
  • Minimum requirements for improving the health and safety protection of the worker at risk from explosive atmospheres.
  • New:ATEX 137 (Old: ATEX 118a)
  • Designation examples
  • Use in gaseous atmospheres: II G EEx ia IIC T4
  • Use in dusty atmospheres: II 2 D T90ºC IP64
  • Use for mining applications: I M2 EEx ia I

Intrinsic Safety Ex i Concept Principles

  • Increased Safety Concept Ex e
  • Non Incentive Concept Ex n
  • Pressurization Concept Ex p
  • Combined and other Concepts
  • Standards, Certification and Marking
  • ATEX Directive (Product)
  • Codes of Practice Selection and Installation
  • Installation of Ex Equipment
  • Electrical Protection
  • Safety with Testing
  • Maintenance and Repair of Ex Equipment
  • Intrinsic Safety Exi Applications and Systems
  • Legal Requirements
  • Piper Alpha Incident Review
  • ATEX Directive – Safety of Workers and Regulations.

Device Group

  • Category
  • Atmosphere
  • Type of ignition protection
  • Temperature classes
  • Explosion group
  • The Basic Physic Principles and Definitions of Explosion Protection
  • Statutory Regulations and Standards

Analysis of Instruments Commonly Found in Hazardous Areas

  • Switches
  • push buttons, selector switches, float switches, flow
  • switches, proximity switches, limit switches
  • Thermocouples
  • I/P Converters
  • Transmitters
  • RTDs
  • An RTD (resistance temperature
  • detector)
  • Light Emitting Diodes (LEDs)
  • Solenoids
  • I.S. Solenoids
  • solenoid
  • Strain Gauges
  • Potentiometers
  • Audible Alarms
  • Serial Communications
  • Fire Detectors
  • What is a simple apparatus?
  • What Are Zener Diode Barriers?
  • The Alternative to Zener Diode Barriers
  • Transformer Isolation
  • Advantages of Transformer Isolated Barriers vs. Zener
  • Diode Barriers
  • Wiring Practices
  • General Requirements

Quality Requirements for Intrinsic Safety

  • Explosion Prevention Methods Design
  • technique applied to electrical equipment
  • Wiring for hazardous locations
  • Limiting energy, electrical and thermal,
  • Requirements to ignite a specific hazardous atmospheric mixture
  • Intrinsically safe equipment and wiring
  • Releasing electrical or thermal energy
  • Normal or abnormal conditions
  • Cause ignition of a flammable or combustible atmospheric mixture
  • Ignitable concentration

Intrinsic Safety Applied

  • General Requirements
  • Electrical Apparatus for Explosive Gas Atmospheres.
  • Method of Test for Ignition Temperature
  • Electrical Apparatus for Explosive Gas Atmospheres
  • Electrical Apparatus for Potentially Explosive Atmospheres
  • Specification for Intrinsically Safe Electrical Systems “i”.
  • Factory Mutual Approval Standard
  • Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II and III,
  • Division 1 Hazardous (Classified) Locations
  • Classifying Hazardous Areas and Flammable Atmospheres
  • Ignition Curves
  • Powered Devices
  • Power Supplies
  • I.S. Barriers
  • I.S. Galvanic Isolators
  • Intrinsically Safe location tracking tags
  • personnel safety in the Oil and Gas industry
  • Intrinsically safe (I-Safe) specifications
  • approval ratings

Intrinsic Safety Approvals for Radio Communications Equipment

  • Intrinsically Safe Cell Phone/Smartphone/PDA
  • What is Intrinsically Safe (IS)?
  • What is Non-Incendive (NI)?
  • What communication products carry safety certifications?
  • Classifications
  • European IEC, Cenelec, NEC 505 codes
  • N.A. NEC 500, CSA codes, UL® 913-88 Standards
  • Class, Division and Group
  • Detailed list of groups
  • Temperature rating codes
  • Certifying Agencies for Hazardous Locations Equipment
  • Servicing of Intrinsically Safe Radios
  • Operating and Design Principles
  • The advantages of intrinsic safety
  • The installation and maintenance requirements for intrinsically
  • safe apparatus
  • Why choose intrinsic safety ?
  • Available power
  • Definition of Intrinsic Safety
  • Typical intrinsically safe system
  • Levels of protection
  • Typical IS system
  • Temperature classification
  • The second method of causing an explosion is normally considered
  • to be ignition by a hot surface.
  • Faults
  • Simple apparatus
  • Cables
  • Typical Gas
  • Gas Group
  • Typical gases, their classification & ignition energies

Intrinsic Safety Certification Process

  • intrinsic safety or hazardous locations
  • Complete investigation
  • Revision project
  • Initial design review
  • Technical consultation



Request More Information

Please enter contact information followed by your questions, comments and/or request(s):
  • Please complete the following form and a Tonex Training Specialist will contact you as soon as is possible.

    * Indicates required fields

  • This field is for validation purposes and should be left unchanged.

Request More Information

  • Please complete the following form and a Tonex Training Specialist will contact you as soon as is possible.

    * Indicates required fields

  • This field is for validation purposes and should be left unchanged.