NFPA 31 (27 questions) Questions and Graded
Answers.
define Authority Having Jurisdiction - NFPA 3.2.2
define the term "Listed" - NFPA 3.2.4
a closed vessel in which water is heated, steam is generated is known as a - boiler
NFPA 31 3.3.6.4
a burner that requires a chimney or venting system of natural draft is called a ____ burner -
natural draft-type burner
NFPA 31 3.3.6.4
confined space is defined by NFPA 31 as ______ ? - 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 - direct
vent appliance
NFPA 31 3.3.21
what is a direct venting system - 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 _____? - 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 ___? - 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 - pre-
purge period
NFPA 31 3.3.49
the action of shutting off al fuel and ignition energy to an appliance by means of a safety control
or controls, such that restart of the appliance cannot be accomplished without some form of
manual reset that requires local, manual intervention is known as ___? - safety shutdown
NFPA 31 3.3.54
the interval of time during which the main burner fuel is permitter to be delivered into the
ignition zone before the flame-sensing device is required to detect flame is the ____ period -
trial for ignition period
NFPA 31 3.3.59
any space whose volume is equal to or greater than 503 ft per 1,000 BTU/hr. of aggregate input
rating of all fuel-burning appliance installed therein is called a ___ space - unconfined
space
NFPA 31 3.3.60
at what pressure would a relief valve blow off on a low pressure steam boiler? - 15psig
NFPA 31 3.3.4.3
Answers.
define Authority Having Jurisdiction - NFPA 3.2.2
define the term "Listed" - NFPA 3.2.4
a closed vessel in which water is heated, steam is generated is known as a - boiler
NFPA 31 3.3.6.4
a burner that requires a chimney or venting system of natural draft is called a ____ burner -
natural draft-type burner
NFPA 31 3.3.6.4
confined space is defined by NFPA 31 as ______ ? - 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 - direct
vent appliance
NFPA 31 3.3.21
what is a direct venting system - 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 _____? - 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 ___? - 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 - pre-
purge period
NFPA 31 3.3.49
the action of shutting off al fuel and ignition energy to an appliance by means of a safety control
or controls, such that restart of the appliance cannot be accomplished without some form of
manual reset that requires local, manual intervention is known as ___? - safety shutdown
NFPA 31 3.3.54
the interval of time during which the main burner fuel is permitter to be delivered into the
ignition zone before the flame-sensing device is required to detect flame is the ____ period -
trial for ignition period
NFPA 31 3.3.59
any space whose volume is equal to or greater than 503 ft per 1,000 BTU/hr. of aggregate input
rating of all fuel-burning appliance installed therein is called a ___ space - unconfined
space
NFPA 31 3.3.60
at what pressure would a relief valve blow off on a low pressure steam boiler? - 15psig
NFPA 31 3.3.4.3
