NFPA 13 Code 1 Final exam prep questions and answers

NFPA 13 Code 1 Final exam prep
questions and answers63

Gridded dry pipe systems shall not be installed. True or false - ANSWERS-True



Heat tape may be used in lieu of heated valve enclosures to protect the dry pipe valve and
supply pipe against freezing. True or false - ANSWERS-False



In an antifreeze system where pendant sprinklers are utilized, the water shall be drained from
the entire system including any drops after hydrostatic testing with water. True or false -
ANSWERS-True



System piping can be used to support a preaction system pilot line. True or false - ANSWERS-
True



The floor control valves at each level of a 12 story building have 1 1/4" drain connection. The
drains are tied into a common drain riser. The minimum size of the riser is 1 1/2". True or false -
ANSWERS-True



40' of cross main on a dry system in the freezer must have a pitch of 1 inch. True or false -
ANSWERS-False



The capacity of a trapped dry system is 10 gallons. The minimum drainage facility required is a
3/4"valve and plug. True or false - ANSWERS-False



There is no limit to the size of a dry system provided it can supply water to the inspectors test
within 60 seconds. True or false - ANSWERS-True

,Any listed accelerator maybe used in combination with any listed differential type dry pipe
valve. True or false - ANSWERS-False



When resetting a valve, a thin coating of grease may be applied to the valves seats. True or false
- ANSWERS-False



The use of reconditioned valves and devices as replacement equipment in existing systems shall
not be permitted. True or false - ANSWERS-False



Reconditioned sprinklers shall be permitted to be utilized on any new or existing system. True or
false - ANSWERS-False



Components that do not affect system performance such as drain piping, drain valves, and signs
shall not be required to be listed. True or false - ANSWERS-True



All joints for the connection of copper tube shall be brazed. True or false - ANSWERS-False



System size on a dry system shall be such the initial water is discharge from the system test
connection and not more than______ seconds, starting at the normal air pressure on the
system and at the time of fully open inspection test connection.

A) 30

B) 45

C) 60

D) 120 - ANSWERS-60



Valve rooms shall be _______



A) heated

,B) lighted and heated

C) heated with floor drain installed

D) heated and ventilated - ANSWERS-Lighted and heated



Air supply shall have the capacity capable of restoring normal air pressure to the system
within...

A) 15 minutes

B) 60 minutes

C) 45 minutes

D) 30 minutes - ANSWERS-30 minutes



The requirements of 7.2.6.2.2 shall not apply In refrigerated spaces maintained below 5°F,
where normal system air pressure shall be permitted to be restored within ______.



A) 15 minutes

B) 30 minutes

C) 45 minutes

D) 60 minutes - ANSWERS-60 minutes



All components of pneumatic, hydraulic, or electrical systems _______ be compatible.



A) should

B) may

C) recommended to

D) shall - ANSWERS-Shall

, In a refrigerated space the removable length of pipe passing through the wall required in
7.9.2.1.1 shall be a minimum of _______ inches.



A) 24

B) 30

C) 36

D) 48 - ANSWERS-30



What indicates a mandatory requirement.



A) should

B) shall

C) mandated

D) recommended - ANSWERS-Shall



A sprinkler system in which pipe sizes are selected on a pressure loss basis to provide a
prescribed water density, in gallons per minute per square foot, or prescribed minimum
discharge pressure or flow per sprinkler, distributed with a reasonable degree of uniformity over
a specified area.



A) Hydraulically Designed System

B) Multi-Cycle System

C) Looped Sprinkler System

D) Gridded System - ANSWERS-Hydraulically Designed System



A sprinkler system employing automatic sprinklers that are attached to a piping system
containing air or nitrogen under pressure, the release of which (as from the opening of a