6 Basic Rules to Ensure Substation Safety

Sub-Station Safety

Rule No. 1, CLEARANCE;
Enough clearance from energized parts should be provided to avoid accidental contact with them. If that can’t be met, live parts should be guarded or enclosed.

Rule No. 2, MINIMUM HEIGHT;

A minimum height from the ground to any ungrounded part of an electrical installation should be 8’-6”, so a person staying on the ground can’t touch a substation element or its part which may become energized accidentally. For example, the bottom of a post insulator supporting an energized bus does not normally have any potential.

Rule No. 3, ILLUMINATION;

There should be sufficient illumination for personnel to clearly see their surroundings and perform any work safely. Required illumination levels are specified in NESC® [1].

Rule No. 4, PASSAGEWAYS;

All passageways and stairs should be wide enough for personnel to navigate them safely, adequate railing should be provided, and floor openings should have guard rails.

Rule No. 5, EVACUATION ROUTES;

Exits should be clearly marked and evacuation routes should be free from obstructions. Depending on the function of the building (for example, control house), it may require several exits to avoid personnel being trapped during equipment fault, fire, etc.

Rule No. 6, GROUNDING;

All substation metallic structures, fences, and equipment tanks should be connected to a station ground grid which should be designed to ensure that step and touch potential values are lower than the ones stipulated in the applicable standards.

 

6 Basic Rules to Ensure Substation Safety On-Line Buyer's Guide

The Electricity Forum Online Transmission & Distribution Buyer's Guide is an interactive reference tool for buyers and specifiers, providing information on equipment, companies, products and services for North America's electrical industry. Search through hundreds of leading Suppliers and thousands of product categories. Add Your Company Today!

Free 6 Basic Rules to Ensure Substation Safety Magazine Subscription

The Electricity Forum is a North American "value added" publisher of Transmission & Distribution print/digital magazine: Electricity Today - a leading electrical transmission and distribution magazine. Magazine is distributed FREE of charge to North American electrical industry professionals.

Contribute To The Electricity Forum

The Electricity Forum is interested in publishing your technical, non-commercial articles, on a wide variety of subjects. We are seeking original content for our Transmission and Distribution Channels. Click here to view our author guidelines and submit your article today!