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  • Writer's pictureAllan Bozek, P. Eng

Hazardous Area Classification: Water Treatment Facilities

A seven-hour course intended for Engineering and Design Personnel who are responsible for defining a hazardous area classification for Waste Water Treatment and Collection Facilities. The course covers hazardous area classification for Waste Water Treatment and Collection Facilities, hazardous area classification codes and best practices, and documentation of hazardous area classification design.


Course Description

Learning Objectives:

  • To establish the degree and extent of a hazardous area classification for Waste Water Treatment and Collection Facilities.

  • To apply the appropriate hazardous area classification codes, standards and recommended practices to a given application.

  • To properly document a hazardous area classification design.

Course Information

Course Includes:

  • Hard copy of slide presentation

  • PDF of course materials

  • Certificate of attendance


Allan Bozek, P.Eng, MBA Allan has over 30 years experience in the design, construction, commissioning and maintenance of industrial power systems. The scope of his experience includes manufacturing, oil and gas production, refining, water treatment and mining industrial facilities. He is a member of the IEEE industrial applications society, a committee member of the Canadian Electrical Code Section 18 (Hazardous Locations) and is a registered Profession Engineer in Alberta, British Columbia, Saskatchewan, Manitoba and Ontario.

Detailed Outline

1. Hazardous Location Basic Concepts

  • Basic Concepts

  • The fire triangle

  • Probability of release vs. risk of ignition

  • Standard of care required to perform a hazardous area classification

2. Codes Standards and Recommended Practices

  • CEC Section 18

  • OH&S Requirements

  • NFPA 497

  • NFPA 820

  • IEC 60079‐10‐1

3. Definitions

  • Class, Zone, Group, Auto‐ignition Temperature, Temperature code

  • Zone vs. Division Methods of Area Classification

  • Normal vs. Abnormal Operations

4. Hazardous Materials

  • Flammable gases and liquids classifications

  • Flammability relationships

  • Density

  • Group classification

  • Auto‐ignition temperature

5. Methods of Hazardous Area Classification

  • Classification by example

  • Point source method

  • Classification based on Operating Experience

6. Ventilation Concepts

  • Adequate vs. Inadequate ventilation

  • HVAC design concepts

  • Naturally ventilated enclosed areas

  • Use of gas detection

  • Use of vapor‐tight barriers

7. Documentation Requirements

  • Area classification study report

  • Calculation requirements

  • Drawing requirements

8. Application Examples

  • Waste Water Treatment Facility Tutorial


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