CWEA E1 exam 2023 with 100% correct answers

Confined Space A space that: -is large enough to enter and work. -has limited or restricted means for entry. -is not designed for continuous occupancy. Hot Work Permit An employer's written authorization to perform work capable of providing a source of ignition. Inerting A form of purging or ventilating a confined space where an inert gas (such as nitrogen, carbon dioxide or argon) is used to displace the atmosphere in a confined space to remove fire or explosion hazards. Causes oxygen levels to become unstable for re-entry. Oxygen Safe Zone 19.5% to 23.5% Below 19.5=unsafe for breathing Above 23.5=explosive Leader Line The part or area of a drawing to which a number, note or other reference applies. They are solid lines and usually terminate in a single arrowhead. Hydraulic Term: "Resistance" A construction in the bore of the pipe which requires more pressure to pass the same amount of water. Hydraulic Term: "Voltage" (Assume water is flowing horizontally so gravity isn't a factor) Electric potential is equivalent to pressure and the voltage (or voltage drop/potential difference) is the difference in pressure between two points. Hydraulic Term: "Current" Equivalent to a hydraulic volume flow rate; that is the volumetric quantity of flowing water over time. Ohm's Law Current through a conductor between two points is directly proportional to the voltage across the two points. S.O.P. Standard operating procedure. N.E.C. National Electrical Code. N.F.P.A. National Fire Protection Association NPT National pipe thread. Tapered pipe. Compound Gauge Displays negative AND positive pressure measurements Cat1 Meter Measures electronics Cat2 Meter Measures single-phase receptacles. Cat3 Meter Measures 3 phase distribution and single phase lighting equipment. Cat4 Meter Measures 3 phase at utility connection and any outdoor connections.