Arc flash risks are a real danger in workplaces where employees interact with high-energy electrical equipment. An arc flash can cause serious burn injuries or even death and therefore it is important to display warning signs.
One of the best ways of relaying these risks is through use of an arc flash label. These labels are used as references, giving the worker a clear indication of possible hazards and informing them of how they can protect themselves in the process.
This article will highlight principles to follow when designing arc flash labels and how to meet the necessary standards.
Sections of Arc Flash Labels
Arc flash labels need to contain a specific level of information in order to be informative and accurate at the same time. The following components should be included on any arc flash label:
a. Warning Header:
For the risk level, there should be a warning title either “DANGER” or “WARNING,” depending on the level of the risk.
b. Incident Energy Level
This is an indication of the level of energy that can be let out in case of an arc flash. The workers require this information to know which PPEs to wear.
c. Arc Flash Boundary
This describes the minimum safe distance from the electrical equipment. Persons who are out of this zone will not be affected by the electrical energy in case of an arc flash.
d. PPE Requirements
This should include what protective clothing is required to be worn; like flame resistant clothing, face shields, and gloves.
e. Voltage Level
The voltage of the working equipment shall be clearly stated for it is one of the most important considerations when evaluating arc flash hazards.
f. Date of the Label
It should contain the date that the analysis or assessment is done to assure that the information collected is up-to-date.
Best Practices for Arc Flash Labels
Coming up with ideal arc flash labels is not a walk in the park and it has to be done in line with the required standards. Follow these best practices to ensure your labels are both compliant and effective:
a. Use Durable Materials
Arc flash labels should be printed on materials that are resistant to wear and tear and adverse working conditions. Accidents can arise from labels which have peeled off or those which have been faded to an extent that they cannot even be read.
b. Ensure Clear Visibility
Ensure that labels are affixed to the equipment in such a way that it will be visible to the workers; and the contents of the labels readable and comprehensible to them. The text and the graphics on the sign should be easily visible from a distance that will be safe.
c. Follow NFPA 70E Standards
The NFPA 70E has guidelines on arc flash labeling. Make sure all of the labels satisfy the set standards to prevent legal or regulatory violations and to safeguard workers.
d. Regularly Update Labels
Arc flash risk assessments should be conducted from time to time and the labels also need to be updated based on the changes in equipment or electrical systems. Indeed, the possibility of having insufficient protection may result from having old data.