Definitions
This occurs when an electrical current passes through the air.
What is Arc Flash?
Before starting each job that involves exposure to electrical hazards, the employee in charge shall complete this.
What is a job safety plan?
This person must be able to identify the hazards of the task, the PPE you will need and job planning necessary to work safely.
What is a qualified person?
A common guideline is to use the______ header when the voltage is over 600 or when the incident energy is over 40 cal/cm2.
What is "Danger"?
A number of ___________ exist and both qualified and non-qualified persons must understand these definitions.
What are approach boundaries?
This occurs when the extreme temperatures of the electrical arc cause explosive expansion of both the surrounding air and the metal in the arc’s path.
What is an arc blast?
This kind of assessment shall address the potential for human error and its negative consequences on people, processes, the work environment, and equipment.
What is a risk assessment?
This should be the first priority in the implementation of safety-related work practices.
What is the hazard elimination?
If the threshold voltage is less than 600 then the orange _______ header is typically used.
What is "Warning"?
The ________is the farthest established boundary from the energy source.
What is the flash protection boundary?
The material you should keep between you and a potential blast.
What is a mass?
These programs must include a section on how to investigate an incident/accident.
What are electrical safety programs?
This type of workplace control seeks to isolate people from the hazard.
What are engineering controls?
A measurement in calories/cm2 or Joules/cm2 of thermal energy at a working distance from an arc fault.
What is the "Minimum Arc Rating"?
An approach limit is a distance from an exposed live part where a shock hazard exists.
What is the limited approach boundary?
These flash suits may offer some protection to minimize burns resulting from blasts.
What is protective clothing?
The amount of current delivered at a point on the system during a short-circuit condition.
What is the fault current?
This type of workplace control seeks to change the way people work.
What are administrative controls?
This is the shortest distance at which a person working at the time of an arc-flash may receive permanent injury (the onset of a second-degree burn or worse) if not properly protected by flame-resistant (FR) clothing.
What is the arc flash boundary?
An approach limit at a distance from an exposed live part which there is an increased risk of shock.
What is the restricted approach boundary?
This is the limitation for exposure to high energy equipment; don't loiter.
What is exposure limitation?
The distance between a person’s face and chest area and a prospective arc source.
What is the working distance?
This type of workplace control seeks to replace the hazard.
What is substitution?
Each hazard risk category requires a different level of protection. Categories range from 1 to 4. Category “0” was removed in the NFPA 70E 2015 Changes.
What is PPE?
A distance from an exposed part which is considered the same as making contact with the live part. NO longer recognized by NFPA.
What is the prohibited approach (inner boundary)?