CWEA E1 Study Set Questions & Answers

CWEA E1 Study Set Questions & Answers Confined Space - Answer-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 - Answer-An employer's written authorization to perform work capable of providing a source of ignition. Inerting - Answer-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 - Answer-19.5% to 23.5% Below 19.5=unsafe for breathing Above 23.5=explosive Leader Line - Answer-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" - Answer-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) - Answer-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" - Answer-Equivalent to a hydraulic volume flow rate; that is the volumetric quantity of flowing water over time. Ohm's Law - Answer-Current through a conductor between two points is directly proportional to the voltage across the two points. S.O.P. - Answer-Standard operating procedure. N.E.C. - Answer-National Electrical Code. N.F.P.A. - Answer-National Fire Protection Association NPT - Answer-National pipe thread. Tapered pipe. Compound Gauge - Answer-Displays negative AND positive pressure measurements Cat1 Meter - Answer-Measures electronics Cat2 Meter - Answer-Measures single-phase receptacles. Cat3 Meter - Answer-Measures 3 phase distribution and single phase lighting equipment. CONTINUES...