Canadian Electrical Industry News Week

Aug 5, 2020

Bill BurrBy William (Bill) Burr

The code is a comprehensive document. Sometimes, it can seem quite daunting to quickly find the information you need. In this current series of articles, I will provide a guide to help users find their way through this critical document. This is not intended to replace the notes in Appendix B or the explanations of individual requirements contained in the CEC Handbook, but will hopefully provide some help in navigating while reading the code. Here in this issue: Section 20 — Flammable liquid and gasoline dispensing, service stations, garages, bulk storage plants, finishing processes, and aircraft hangars.

Section 20 amends or supplements the general requirements of the code. It provides specific rules for a number of special Class I, Hazardous Locations.

Section 20 uses the Zone classification system, but as with Section 18 additions or modifications to existing systems may use the Division system as in Annex J20 of Appendix J. The special terminology definitions used in Section 18 also apply to Section 20.

This section is divided into seven parts covering 

• gasoline dispensing and service stations
• propane vehicle fuel dispensing, container filling, and storage
• compressed natural gas refueling stations, compressors, and storage facilities
• commercial repair garages
• bulk storage plants
• finishing processes; and Aircraft hangars

Although requirements are similar for each facility, there are some differences so be sure to check the specific part you are considering.

There are some common rules that are the same for each location.

Hazardous areas

Each part contains a rule outlining the hazardous areas or locations for which that part applies. Wiring and equipment within the hazardous areas as defined in that part shall conform to Section 18 requirements. Some parts have additional requirements, so check the appropriate rule in that part. Notes in Appendix B, Tables 63, 64 and 69, Diagrams 4,5,6 and 10, and the CEC Handbook are very helpful in determining the hazardous areas in various parts.

Sealing

Rules 20-012, 20-038, 20-066, 20-108, 20-208, and 20-412 specify that seals are required in accordance with Section 18, and this includes horizontal as well as vertical boundaries of the hazardous locations. Additional sealing requirements may be contained in specific parts.

Bonding

Rules 20-014, 20-042, 20-070, 20-212, 20-314 and 20-422 require that all metal raceways and all non-current-carrying metal portions of fixed or portable equipment, regardless of voltage, are to be bonded to ground in accordance with Section 10.

Specific parts

Gasoline dispensing and service stations

Rules 20-002 to 20-014 apply to electrical apparatus and wiring installed in gasoline dispensing and service stations and other locations where gasoline or other similar volatile flammable liquids are dispensed or transferred to the fuel tanks of self-propelled vehicles. Other areas used as lubritoriums, service rooms and repair rooms, and offices, salesrooms, compressor rooms, and similar locations shall, with respect to electrical wiring and equipment, conform to Rules 20-100 to 20-112, which are in the Commercial repair garages part.

Propane dispensing, container filling, and storage

Rules 20-032 to 20-042 apply to locations in which propane is dispensed or transferred to the fuel tanks of self-propelled vehicles or to portable containers, and to locations in which propane is stored or transferred from rail cars or tanker vehicles to storage containers. There are some special terms for this subsection defined in Rule 20-032:

Container refill centre (propane service station) — a facility in which a dispensing system is installed.

Dispensing system — a system, consisting of tank, pump and motor, propane dispenser, and associated piping and supports, for the storage, metering, and dispensing of liquid propane into containers.

Filling plant (bulk plant) — a bulk propane storage, distribution and transfer facility.

Vehicle fuel dispenser — a propane dispenser, specifically for dispensing liquid propane by volume into containers.

Compressed gas and natural gas refueling stations, compressors, and storage facilities

Rules 20-062 to 20-070 apply to locations in which compressed natural gas is dispensed to the fuel tanks of self-propelled vehicles and to associated compressors and storage facilities. These rules, however, do not apply to vehicle refueling appliances installed in accordance with CSA B149.1 that do not have storage facilities.

Commercial repair garages

Rules 20-102 to 20-112 apply to commercial garages where vehicles powered by gasoline, propane, or other flammable fuels are serviced or repaired.

Bulk storage plants

Rules 20-202 to 20-212 apply to locations where gasoline or other similar volatile flammable liquids are stored in tanks having an aggregate capacity of one carload or more, and from which such products are distributed (usually by tank truck).

Finishing processes

Rules 20-302 to 20-314 apply where paints, lacquers, or other flammable finishes are regularly or frequently applied by spraying, dipping, brushing, or by other means, and where volatile flammable solvents or thinners are used or where readily ignitable deposits or residues from such paints, lacquers, or finishes may occur.

Aircraft hangars

Rules 20-402 to 20-422 apply to locations used for storage or servicing of aircraft in which gasoline, jet fuels or other volatile flammable liquids, or flammable gases are used, but shall not include those locations used exclusively for aircraft that have never contained such liquids or gases, or that have been drained and properly purged.

In the next instalment we will be discussing Section 22 — Locations in which corrosive liquids, vapours, or excessive moisture are likely to be present.

* The source for this series of articles is the Canadian Electrical Code, Part I, published by CSA.

William (Bill) Burr is the former Chair of the Canadian Advisory Council on Electrical Safety (CACES), former Director of Electrical and Elevator Safety for the Province of BC, and former Director of Electrical and Gas Standards Development and former Director of Conformity Assessment at CSA Group. Bill can be reached at Burr and Associates Consulting billburr@gmail.com.


 Salex Expands to Southwestern Ontario                                                                   

LDS Salex 12 175

Salex continues to support the Southwestern Ontario market with representation of key market leaders in lighting and controls, including its partnership with Axis Lighting, Beghelli Canada and OSRAM.

Axis Lighting is an innovative, forward-thinking manufacturer delivering high-performance LED luminaires for general, ambient and task lighting in office, commercial and institutional spaces. One of their leading-edge developments includes Stencil. Stencil brings together lighting segments and connectors called Hubs, the building blocks for creating forms and patterns of all sizes. 

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The Jaibot executes its tasks based on building information modeling (BIM) data. The robot is a completely cordless and easy-to-use system that doesn’t require expert skills. It locates itself accurately indoors, drills the holes dust-controlled and finally marks them according to the trade. 

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EIN AEA virtual 400Mark your calendars for Nov. 24-25 and get ready for a virtual trade show and amazing technical presentations. AEA, the exhibitors and presenters are so excited to present this event to the entire province of Alberta.

Attendees will have easy access to virtual booths with an opportunity to have their questions answered by qualified people, and win some prizes throughout the days at both the trade show Virtual Floor and by attending the seminars.

 

Go HERE to register and for the full event details

 

 


 



Lighting ControlsBy Jeremy Day

Building a control system for a modern lighting installation can seem like an impossibly complex task. To simplify it, a systematic approach to understanding the needs of the design, facility, and user can be employed. In this white paper, we aim to define the questions one must answer to construct an appropriate control system.

First, and perhaps counterintuitively, one must start with the control narrative. A lighting programming and control narrative is a document that is essential to coordinate the design/construction process with a fully realized final architectural product. 

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Terry BeckerBy Terry Becker

Changes in the CSA Z462 Workplace electrical safety standard are slowing down. Good news! The 2021 edition will see significant reorganization of content in Clause 4.1, changes to existing annexes, some new annexes and a significant change to the arc flash PPE category method of determining “additional protective measures” for a work task’s arc flash risk assessment are included in the 2021 edition.

CSA Z462 2021 edition will not be 100% technically harmonized with the 2021 edition of NFPA 70E...


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Shat-R-Shield Ironclad VR ProShat-R-Shield's Correctional Cell Fixture is designed to withstand extreme abuse by using materials that are virtually indestructible. Built with 1/2" thick 304 Stainless Steel and a cast .400" thick diffused lens, this light fixture is built to withstand hard/repetitive impacts and its tight design offers no point of entry.

The Ironclad® Vandal-Resistant (VR Pro) fixture uses an LED high efficiency light engine with a cool light that simulates daylight. The incorporated count light LED module can be turned on and off. Tested to Canadian and US standards by Underwriters' Laboratories, this fixture carries a cULus rating.

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M12™ Heated TOUGHSHELL™ Jacket KitOur heated TOUGHSHELL™ jacket is powered by our powerful M12™ REDLITHIUM™ batteries. Each heated jacket uses carbon fiber heating elements to create and distribute heat to your chest, back and front hand pockets. A one-touch LED controller heats up the battery heated jacket to three heat settings, creating a comfortable heat for any environment or weather.

This MILWAUKEE® heated jacket has a new Quick-Heat function that allows you to feel heat three times faster than our previous jackets and market competitors. 

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Kenzie GillanBy Sarah Pickard

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Rutul Bhavsar 1 400By Blake Marchand

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Sustainability at Mohawk College. Rutul’s interests lie in the more progressive areas of the industry, automation, control, and energy efficient technologies. It is no doubt a positive sign for the industry to have talented individuals such as Rutul who are passionate about contributing to a more sustainable future. 

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