Advance Electrical and Arc Flash
This boundary is the distance from an exposed energized part within which a shock hazard exists.
What is The Limited Approach Boundary (or Restricted Approach Boundary)?
The "Power Zone" for lifting—where you are strongest and least likely to get injured—is located between these two body parts.
What is Mid-thigh and mid-chest (or Knees and Shoulders)?
This type of early warning smoke detection system actively draws air through piping to detect smoke before a visible flame appears.
What is VESDA (Very Early Smoke Detection Apparatus)?
When using an extension ladder, you must follow this ratio for the proper angle (distance from wall vs. height).
What is the 4-to-1 rule (1 foot out for every 4 feet up)?
On the NFPA "Safety Diamond," the Blue section represents Health, while the Red section represents this.
What is Flammability?
To prevent Arc Flash, you must verify the absence of voltage using this three-step test method on your meter.
What is Live-Dead-Live (Test before, test the circuit, test after).
This specific motion, when combined with lifting, is the leading cause of back injuries and should be avoided by moving your feet instead.
What is Twisting?
For an electrical fire (Class C), you should never use this type of extinguisher as it conducts electricity.
What is Water (Class A)?
When transitioning from a ladder to a roof, the ladder must extend at least this many feet past the landing surface.
What is 3 feet?
If you pour a chemical from a bulk drum into a smaller spray bottle, you must apply this to the new bottle.
What is a Secondary Container Label (must identify contents and hazards).
The unit of measurement used to quantify the incident energy of an Arc Flash (often found on the equipment label).
What is Calories per square centimeter (cal/cm²)?
Before lifting a heavy server, you should check the path for these hazards to prevent a sudden shift in weight.
What is rip hazards / Obstructions?
This acronym outlines the four steps to using a fire extinguisher properly.
What is P.A.S.S. (Pull, Aim, Squeeze, Sweep)?
In general industry, fall protection (such as a harness) is required when working at heights of ____ feet or more.
What is 4 feet?
Under GHS standards, this document has 16 standardized sections detailing everything about a chemical.
What is Safety Data Sheet (SDS)?
When working on energized equipment, tools must be insulated and rated for at least this voltage.
What is 1,000 Volts (1kV)?
A "Team Lift" is generally required or recommended when an object exceeds this weight (Standard varies, but usually...?).
What is 50 lbs?
In a "Pre-Action" sprinkler system, this must happen before water is released into the pipes.
What is Two distinct events? (e.g., Smoke detection AND heat detection/head activation).
This fundamental rule of ladder climbing ensures stability by keeping two hands and one foot (or two feet and one hand) on the ladder at all times.
What is Three Points of Contact?
The GHS pictogram featuring an exclamation mark generally indicates this type of hazard.
What is Irritant (skin/eye), Skin Sensitizer, or Narcotic effects?
In an electrical rescue, this non-conductive tool is used to pull a victim away from the power source.
What is A Rescue Hook (or Shepherd’s Hook/Body Hook)?
When using a server lift or manual pallet jack, it is safer to do this action rather than pulling, to reduce strain on the back.
What is push?
If trapped in a room with a fire, you should touch the door with the back of your hand to check for this before opening.
What is heat?
Before using a scissor lift, checking these structural supports that extend from the chassis to the ground is critical for stability.
What are outriggers or stabilizers?
In the event of a battery acid spill, you should use a spill kit containing a base neutralizer to adjust this chemical property before cleaning.
What is ph Level?