Nfpa 31 Exam (27 Questions)

Define Authority Having Jurisdiction - Answer-NFPA 3.2.2 Define the term "Listed" - Answer-NFPA 3.2.4 A closed vessel in which water is heated, steam is generated is known as a - Answer-boiler NFPA 31 3.3.6.4 A burner that requires a chimney or venting system of natural draft is called a ____ burner - Answer-natural draft-type burner NFPA 31 3.3.6.4 Confined space is defined by NFPA 31 as ______ ? - Answer-a space whose volume is less than 50 ft^3 per 1,000 BTU/hr. Of the aggregate input NFPA 31 3.3.14 A system consisting of an appliance, combustion air and flue gas connections between the appliance and the outside atmosphere, and a vent cap supplied by the manufacturer, constructed so that all air for combustion and draft control is obtained from the outside atmosphere and all flue gases are discharged to the outside atmosphere is known as a _____ appliance - Answer-direct vent appliance NFPA 31 3.3.21 What is a direct venting system - Answer-a venting system that is constructed and installed so that all air for combustion and draft control is taken from interior building spaces and all combustion products are discharged to the outside atmosphere NFPA 31 3.3.23 The length of time fuel is permitted to be delivered to the main burner before the flame-sensing device is required to detect the main flame is called _____? - Answer-main burner flame establishing period NFPA 31 3.3.39 The application of a mechanical means of removing combustion products to the outside atmosphere is known as ___? - Answer-power venting NFPA 31 3.3.48 The interval of time during burner start-up in which air is introduced into the combustion chamber and the associated flue passages in such a volume and manner to completely replace the air or fuel-air mixture contained therein prior to initiating ignition is the ___ period - Answer-pre-purge period NFPA 31 3.3.49