by , on January 31, 2019

Electrical Safety training can be difficult to implement.

Complex rules from OSHA and NFPA 70E have to be incorporated into even more complex workplace roles and responsibilities (job descriptions). The aim of this short article is to simplify these requirements in an easy-to-digest manner. This is aimed at persons new to electrical safety.

OSHA should be the first port of call

More specifically, look at 1910 Subpart S – Electrical. These rules focus on industrial (stamping, vehicle manufacturing, airports, food processing, packaging, general manufacturing, hospitals, etc.) and light commercial operations (administration buildings, warehouses, hotels, entertainment areas, etc.). Utilities and residential are largely excluded from the rule set.

Look at the Who, What, Where, When and Why

Before delving into training, take a step back and think about the following:

  • Who is at risk, and when are they at risk of injury from the shock and arc flash hazard?
  • When should training be done?
  • Where is risk of injury greatest?
  • What kind of electrical safety training do my workers need?
  • Why would I want to provide training?

WHO is at risk?

Anyone who may interact with energized electrical equipment (e.g., switching a disconnect or breaker, performing maintenance work close to energized parts, troubleshooting, testing, installing, decommissioning, measuring, etc.).

OSHA 1910.332(c) provides a list of who should be trained. We recommend that you start with electrical engineers, electricians, electrical technicians, then move onto training maintenance, operations. Don’t forget management. If getting started or budgeting is a problem, or if support is lacking, try reading up on “Get the Boss on Board”.

WHEN should training be done?

Training should be performed once every three years in order to align with the major changes in NFPA 70E. Annual refresher training and the on-the-job coaching should supplement the three yearly cycles.

WHERE is risk of injury greatest?

OSHA uses the language “close enough to energized parts”. This means that the risk of injury is influenced by proximity.

OSHA does not allow unprotected workers to be closer than one foot (12 inches) from an energized part at low voltage (< 600V).  NFPA 70E states that the risk of shock is still present at 3’6” (42 inches) and that the risk of burn injury should be quantified and could be (and in certain cases will be) greater than 42”.

WHAT kind of electrical safety training do my workers need?

Training varies based on risk exposure. Electrical engineers, electrical technicians, and electricians have the highest exposure rates. Their training should be a comprehensive NFPA 70E class that covers the relevant parts of OSHA (1910 Subpart S for work practices and 1910 Subpart I for Personal Protective Equipment).

Operators and mechanics will require a basic class that makes the workers aware of their responsibilities and safety limits (i.e., tasks they are allowed to perform and tasks that are prohibited). They should also understand the hazards and be able to interpret the safety signs and warnings.

WHY would I want to provide training?

OSHA may issue citations or possibly close down operations until safety concerns are addressed.  Training the workforce shows the employer’s commitment to the workers’ success.  Finally, safety risks transcend worker injury and can easily spill into business risk due to reputation (brand) damage and insurance premium adjustments.

Bringing it all together

To take advantage of a great resource based on the Plan, Do, Check, Act model (Deming model, Ishikawa examples), refer to the e-Hazard Safety Cycle™.

Here is a very high level summary of the steps:

Training is by far the quickest return on investment since it is cheap, requires little time away from work, and most importantly, provides all the information required to make the next big decisions. Students leave with an idea of what PPE they would need for shock protection and arc flash.

The second stage should be an estimation of the arc flash incident energy (arc flash engineering study). This will quantify the need for higher rated arc protection and provide labels on equipment so that workers can easily identify high energy (higher risk) types of equipment.

Establish work practices by developing a Written Electrical Safety Program. Hugh Hoagland provides a guideline on the typical contents of a written program. Read Electrical Safety Program by Hugh Hoagland.

After a defined period, typically after the roll out of PPE and appointment of qualified persons, perform a high level electrical safety audit. This may be performed in-house, or you can partner with an expert. We generally recommend that companies self-audit different areas and involve our team once every three to six years to provide the third party audit.

Contact Us

More information can be found on our website at the e-Hazard Learning Center.

Click on one of the following if you need one of our services:

Zarheer Jooma
About author:
A registered Professional Electrical Engineer, Zarheer brings a unique perspective to the classroom having helped develop SANS 724—the South African National Standard for Protective Equipment against the Thermal Hazards of an Electrical Arc. Read more about Zarheer.

1 Comment on "Electrical Shock and Arc Flash Training: Simplifying the Process"

Timothy Conley - 21 March 2019 Reply

What is the industry consensus for PPE requirements for workers that may pass through an electrical switchgear room or such areas with energized electrical enclosures, where no active work is going on, thus presenting no shock hazard or elevated arc flash risk? NFPA 70E references house keeping practices not requiring an EEWP with the associated caveats, nothing really states arc rated day wear requirements for non electrical workers that pass by energized electrical enclosures during the performance of their duties

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