Class 2 Flashcards
Test 2.1 Question
Answer
Torch cutting and welding if sprinkler piping shall: (NFPA 13, 2007, 13-30, 6.5.2.2.5, NFPA 13,2002,13-26, 6.5.2.12)
Not be permitted as a means if modifying or repairing sprinkler systems
When welding is performed on sprinkler piping the following procedures shall be completed: (NFPA 13, 2007, 13-31, 6.5.2.4.6, NFPA 13,2003, 13-36, 6.5.2.9 (1)(2)(4) )
Holes in piping outlets shall be cut to the full inside diameter of fittings prior to welding in place of the fittings prior to welding in place of the fittings / Discs shall be retrieved / Fittings shall not penetrate the internal diameter of the piping
According to the ASME B1.20.1, the number of threads per inch that properly threads a 2-inch pipe should have: (NFPA 13, 2007, 13-30, 6.5.1.1, NFPA 13, 2002 - - - 13-26, 6.5.1.1)
11-1/2-threads per inch
Of the following types if valves an indicator valve would be:
Butterfly valve
When an oxy-acetylene torch is used for making a brazed joint the type if flame that should be used is:
Reducing flame
The limiting length that determined whether a length of pipe that is threaded on both end is considered either as cut pipe or nipple is:
12-inch
Listed indicating valves shall not close in less than ________ when operating at maximum possible speed from the fully open position: (NFPA 13, 2007, 13-32, 6.7.1.2,, NFPA 13, 2002 - - - 13-27, 6.7.1.2)
5-seconds
A welding procedure shall be prepared and qualified, before any welding is done, for all welding installed in a fire suppression piping system: (NFPA 13,2007, 13-31, 6.5.2.5.1, NFPA 13, 2002 - - - 13-26, 6.5.2.13.5 and 6.5.2.13.6)
The licensed master fire suppression piping contractor / Fabricators
Of the following types of copper tubing the one that has the greatest wall thickness:
Type “K”
In order for a synchronous motor to operate properly a motor must be supplied with:
Both A.C. and D.C.
Of the following classifications of electrical motors a general purpose motor that would most likely be used where operating conditions are relatively clean and dry is the:
Open drip-proof motor
Soldered joints shall be permitted for _____ wet pipe systems in light hazard occupancies where the temperature classification of the installed sprinklers is of the ordinary-or intermediate-temperature classification: (NFPA 13,2007, 13-31, 6.5.4.3, NFPA 13,2002 - - - 13-27, 6.5.4.3)
Exposed
Solder joints shall be permitted for wet pipe systems in light hazard and ordinary hazard (Group 1) occupancies where piping is ____________, irrespective of sprinkler temperature ratings: (NFPA 13, 2007, 13-31, 6.5.4.4NFPA 13, 2002 - - - 13-27, 6.5.4.4)
Concealed / Exposed / Non-exposed
Of the following types of filler metals for brazing the one which can produce highly toxic fumes when brazing:
Bag-2
Waterflow alarm apparatus shall be listed for the service and so constructed and installed that any flow of water from a sprinkler system equal to or greater than that from a single automatic sprinkler of the smallest orifice size installed in the system will result in an audible alarm on the premises within _____ after such flow begins and until such flow stops: (NFPA 13, 2007 - - - 13-32, 6.9.1)
5-minutes
In sprinkler systems, all control, drain and test connections valves shall be provided with: (NFPA 13,2007, 13-32, 6.7.4.1)
Permanently marked weatherproof metal / Rigid-plastic identification signs
Of the following types if heat detectors the one that is commonly used in automatic sprinkler and often used to release fire is the: (NFPA 72, 2002, 72-16, 3.3.43.7 & 72-112, A 3.3.43.7)(“NFPA Fire Handbook”Automatic fire detectors”)
Fixed-Temperature-detector
Seamless steel pipe has been specified to be used in the installation of a sprinkler system. The maximum distance between hangers for supporting a horizontal 1-inch diameter pipe: (NFPA 13,2002 - - - 13-85, Table 9.2.2.1)
12-feet
For class 1 and class 111 systems, the minimum flow rate for the hydraulically most remote standpipe shall be: (NFPA 14, 2003, S-76, 7.10.1.1.1)
500-gpm
In the installation of a centrifugal fire pump when the suction pump and suction flange are not the same size it is recommended practice that they be connected with:(NFPA 20, A-9.6)
Eccentric flanged eccentric reducer
Of the following statements pertaining to sprinklers the one that is most applicable to an upright sprinkler is that an upright sprinkler: (NFPA 13, 2007, 13-20, 3.6.3.6, NFPA 13,2002 - - - 13-17, 3.6.3.6)
Installed in such a way that the water sprayed is directed upward against the deflector
Of the following statements pertaining to sprinklers, the one that is most applicable to a pendant sprinkler, is that a pendent sprinkler is designed to be: (NFPA 2007, 13-20, 3.6.3.3, NFPA 13,2002, 13-17, 3.6.3.3)
Installed in such a way, that the water stream is directed downward against the deflector
A sprinkler in which all or part of the body, other than the shank thread, is mounted within a recessed housing: (NFPA 13,2007, 13-20 3.6.3.4, NFPA 13, 2002, 13-17, 3.6.3.4)
Recessed
A sprinkler system employed automatic sprinklers attached to a piping system containing water and connected to a water supply so that water discharges immediately from sprinklers opened by heat from a fire: (NFPA 13, 2007, 13-19, 3.4.10)
Wet pipe sprinkler system
Test 2.2 Question
Answer
During construction, the installation approval has been granted to choose the location of several components of the fire alarm system. The next effect of this change is a savings of $550.00 in cost to the prime contractor. If the contract was originally for $12,375 then according to the provisions of the above paragraph the adjusted contract dollar value then becomes:
550 / 2= 275 - 50% = 12,375 - 275 = $12,100.00
In the sentence “ there shall be no waiver of rights” the word waiver means most nearly:
Revoking
In the phrase “all rights reserved upon approaching authorities to change” the word reserved means most nearly:
Kept
In the phrase “to change the location” of appurtenances to accommodate conditions. The word accommodate means most nearly:
Satisfy
The pump capacity of a multistage centrifugal fire pump is rated on the: (notes: Stationary fire pumps, NFPA 20)
Discharge of one stage in gallons per minute
The main reason why the outer ends of all external and internal screw threads for a fire hose connection are terminated by a hinge cut blunt start on a full thread is to:
To avoid cross threading of the threads
Of the following type of fire standpipe systems, is a standpipe system, that does not have a permanent water supply attached to the system: ( NFPA 14,2007 - - - S-35, 5.2.4* - - - NFPA 14, 2003, S-53, 5.2.4)
Manual-Dry
When black pipe has been specified to be used in installation of a pimple standpipe system, the maximum allowed horizontal spacing between hangers’: (NFPA 13, 2007, 13-97, Table 9.2.2.1(a) - - - NFPA 14, 2003, S-66, 6.4.2.2)
15-feet
The amount of water to extinguish a fire depends on the: (NFPA Fire Handbook, Characteristics & Hazards of water & water additives)
Heat output (BTU) of the fire
How quickly a fire is extinguished depends on how the water is applied, how much is applied and: (NFPA Fire Handbook)
In what form water is applied
To achieve extinguishment by cooling, it is best to apply water so that the maximum amount of: (NFPA Fire Handbook)
Heat will be absorbed
Water absorbs more heat when it is converted to: (NFPA Fire Handbook)
Steam
When water is absorbed into steam, it will absorb the most heat when used from: (NFPA Fire Handbook)
Small droplets (spray)
(14)Latent heat (thermal energy absorbed) of fusion (transition of a substance from a solid to a liquid) is the amount if energy required to change the state of water from a solid (ice) 32 F, (0 C) to a liquid. Using this process water absorbs:
143.4-BTU per pound
(15)Water is effective as a cooling agent because of its high latent heat (thermal energy absorbed in a process other than change of temperature) of evaporation (changing water from a liquid to vapor) which is: (NFPA Fire Handbook)
970.3-BTU per pound
With the information given in question #14 and #15, and we change a pound of water in a solid state of ice to steam(vapor), the amount of BTU’s required would be:
1294-BTU per pound
When water expands from its liquid state to a vapor state its volume increases:
1600 to 1700-times that of a liquid
At ordinary temperatures, water exist as a stable liquid. Water viscosity (the quality of sticking or adhering) in the temperature range of 34 to 210 F remains consistent which allows it to be:
Transported and pumped
Life safety considerations must be weighed when choosing an effective fire extinguishing agent. Water as an agent is safe, no-toxic, non-corrosive, and stable. Water remains stable when applied to a fire and does not break down into its basic elements. The chemical symbol for water: (NFPA Fire Handbook)
H-2-O
The chemical symbol for oxygen: (NFPA Fire Handbook)
O
The chemical symbol for hydrogen: (NFPA Fire Handbook)
H
Water may be used to smother a burning flammable liquid when the liquid has a flashing point above 100 F, a specific gravity greater than 1.0 and is not soluble(susceptible of being dissolved.) To achieve this most effectively , a foam-water solution must be applied gently to the:
Surface of the flammable liquid
Specific gravity is the ratio of the weight of a solid or liquid substance to the weight of an equal volume of water. The scales of the most commonly used hydro meters are based on a specific gravity of:
1
it is recognized that fuees involving various fuels and materials react differently to various extinguishing agents and that water is not the best agent for all types of fuels. there are four typical classifications of fire and water and water is most effective on:
Class A-ordinary Combustibles
Test 2.3 Question
Answer
If the specific gravity of air (gas) is one and a container with gas that has a specific gravity greater than one and a leak occurs, the escaping gas will:
The gas will sink in a downward direction
A control valve is regularly priced at $120.00 The supply house sold the valve at a 30% discount of the regular price. What is the sale price:
.70 X 120 = $84.00
If eight gallons of cutting oil cost 11.60 what is the cost of gallon:
11.60 / 8 = $1.45
A sprinkler contractor paid $50.00 for a down payment of material bought and then made monthly payments of $30.00 each. What was the total cost after one year:
12 X 30 = $360.00 + 50.00 = $410.00
What is the total amount of heat that must be added to one pound of ice at 22 F. to change it to a vapor at 222 F.:
5 + 144 + 180+ 970 + 5 = 1304 BTU’s
Test 2.4 Questions
Answer
The commission shall appoint _____ and may remove in his or her discretion each member of a plumbing and fire suppression piping contractor license board that shall have as its purpose the following: To ____ the commissioner regarding the character and fitness of applicants for certificates of competence and licenses who have passed the required examination. To ____ the commissioner regarding allegations of illegal practices on the part of licensed master plumbers, licensed master fire suppression piping contractors, master plumber businesses or master fire suppression piping contractors, master plumber businesses or master fire suppression businesses. To ____ the commissioner regarding plumbing and fire suppression piping practices code applications and legislations. To perform such other responsibilities as may be requested by the commissioner and as set forth in rules promulgated by the department. The commissioner may ______ any member of the license board and shall fill any vacancy therein. Membership if the board shall consist of: 1. ____ officers or employees of the department. 2. _________ licensed master plumbers, ________ of whom shall be selected from nominees of the new york city contracting plumbing association whose members perform the largest dollar value of work within the city and _______ of whom shall be the holder of a class A or class B master fire suppression piping contractor license. The ______ remaining licensed master plumber board member positions shall be from the next largest plumbing association in the city of New York. 3. ______ Licensed master fire suppression piping contractors, both of whom shall hold a class A license and shall be selected from nominees of the New York city sprinkler/fire suppression piping contractors’ association whose members perform the largest dollar value of work within the city; A registered ________ ______ from the organization representing the largest number of registered journeyman plumbers; A registered journeyman ______________ from the organization representing the largest number of registered journeyman fire suppression piping installers; An _____ having at least five years of experience in the design of plumbing systems; An _______; An ________ who is a full member of the society of fire protection engineers; _________ officers or employees of the fire department representing the fire commissioner; and a ____ owner or manager or representative thereof. (Admin. Code, 107, 3-33, 28-417.1)
Annually, Advise, Advise, Advise, Remove, Two, Five, Three, One, Two, Two Journeyman plumber, Fire suppression piping installer, Engineer, Architect, Engineer, Two, Real estate
The unsupported length of steel pipe between the end sprinkler and the last hangar on the line shall not be greater than ______ inches for 1” pipe, _____ inches for 1-1/4” pipe and _____ in. For 1-1/2” or larger pipe (NFPA 13,2007 - - - 13-85, 9.2.3.4.1)
24, 18, 48
for copper tube, the unsupported length between the end sprinkler and the last hangar on the line shall not be greater than ______ inches for 1” pipe, _____ inches for 1-1/4” pipe and _____ in. For 1-1/2” or larger pipe (NFPA 13,2007 - - - 13-85, 9.2.3.4.2)
36,48,60
The cumulative horizontal length of an unsupported armover to a sprinkler, sprinkler drop, or sprig shall not exceed _____ inches for steel pipe or ______ inches for copper tube: (NFPA 13, 2007 - - - 13-98, 9.2.3.5.1 )
12, 6
For schedule-40 and copper tubing, the minimum radius of a bend shall be _______ pipe diameters for pipe sizes _____ inches and smaller and ______ pipe diameters for pipe sizes ______ inches and larger. ( NFPA 13, 2007 - - - 13-29, 6.3.7.2)
6,2,5,3
All electrical wiring of a fire alarm system in a fire suppression system comes under the installation jurisdiction of:
ANSI
The following devices that allow pipe to be moved in an axial direction only:
Pipe Saddle
Hangers certified by a registered professional engineer to include all of the following shall be acceptable alternative to requirements: ( NFPA 13, 2007 - - - 13-92, 9.1.1.2)
Hangers shall be designed to support five times the weight of the water-filled pipe plus 250 lbs. (114 kg) at each point of the piping support / these points of support shall be adequate to support the system / hanger component shall be ferrous
Mild- steel hangers formed from rods shall be permitted to be: (NFPA 13, 2007 - - - 13-92, 9.1.1.4.2)
Not listed
Sprinkler piping or hangers shall not be used to support: (NFPA 13,2007 - - - 13-39, 9.1.1.7)
Non-systems components
Toggle - hangers shall be permitted only for the support of pipe _________ or smaller in size under ceilings of hollow tile or metal lath and plaster: ( NFPA 13,2002 - - - 9.2.1.1.2)
1-1/2-inches
All holes for lag-screws shall be pre-drilled ____ inch less in diameter than the maximum root diameter of the lag screw: (NFPA 13,2007 - - - 13-96, 9.1.5.3.3)
1/4- inch
Holes for bolts shall not exceed _____ greater than the diameter of the bolt: (NFPA 13,2007 - - - 13-96, 9.1.5.3.3)
1/16- inch
Bolts shall be provided: ( NFPA 13, 2007 - - - 13-96, 9.1.5.3.5)
Flat-washers / Nuts
Of the following, which is considered the least important, in pipe hanger support system installation
The type of pipe joint
Standard-weight steel pipe is equal to:
Schedule-40
Branch line hangers attached to metal deck shall be permitted only for the support of pipe ______ or smaller in size, by drilling or punching vertical members and using through bolts: (NFPA 13, 2007 - - - 13-97, 9.2.1.4.1)
1-inch
The maximum distance between hangers supporting horizontal copper tubing of 1-inch: ( NFPA 13, 2007 - - - 13-97, Table 9.2.2.1 (a) )
8-feet
The maximum distance between hangers supporting horizontal threaded light-wall steel pipe of 1-inch: (NFPA 13, 2007 - - - 13-97, Table 9.2.2.1 (a))
15-feet
The maximum distance between hangers supporting horizontal CPVC pipe of 1-inch: (NFPA 13,2007 - - - 13-97, Table 9.2.2.1 (a) )
6-feet
The maximum distance between hangers supporting horizontal polybutylene (IPS) pipe of 1-inch: (NFPA 13, 2007 - - - 13-97, Table 9.2.2.1 (a) )
3’-9”
The maximum distance between hangers supporting horizontal polybutylene (CTS) pipe of 1-inch: (NFPA 13,2007 - - - 13-97, Table 9.2.2.1 (a) )
3’-4”
The maximum distance between hangers supporting horizontal ductile iron pipe of 3-inch: (NFPA 13, 2007 - - - 13-97, Table 9.2.2.1 (a) )
15-feet
Test 2.5 Questions
Answer
Of the following tools to use to remove burrs from the inside of a steel pipe:
Spiral reamer
Of the following the best fastener to use in a hollow wall:
Toggle bolt
Which of the following statements is true concerning the connection of the water supply to a sprinkler system:
It may be permissible to connect the water supply to the top of the riser when a gravity tank is the only source of automatic water supply
It is customary practice to replace old-style sprinklers with standard sprinklers in existing installations after a period of time. The basic difference between a standard sprinkler and an old-style sprinkler:
Deflector design
The portable water supply inlet to a combined domestic and fire line reserve roof tank must be equipped with:
Automatic ball cock valve
A wet pipe sprinkler system having a non-fire protection connections to automatic sprinkler systems in a ____________ piping arrangement for the purpose of utilizing sprinkler piping to conduct water for heating or cooling, where water is not removed or used from the system but only circulated through the piping system: (NFPA 13, 2007, 13-18, 3.4.2)
Open-loop
When work on a sprinkler system requires that a contractor operate a valve controlling water supplies to a sprinkler system, the contractor shall:
First inform the owner, and fire department so that the owner may follow the normal supervision procedure
Seamless steel pipe has been specified to be used in the installation of a sprinkler system. The maximum distance between hangers for supporting horizontal 1-1/2-inch diameter pipe in this system: (NFPA 13, 2007 - - - 13-97, Table 9.2.2.1 (a) )
15-feet
Of the following examples of American standard thread designations,the one that applies to connections that connect to or with fire pumps, hose and/or hydrants:
3-6 NH
A “cross pipe” fitting is mainly used for connecting:
Four- Pipes at 90-Degrees
A mechanic cutting and threading a pipe, to make a nipple used a device:
Nipple chuck
The size of nipples, range from:
Close-to-12 inch
“Where clearance is provided by a pipe sleeve, a nominal diameter 2-in. (50-mm) larger than the nominal diameter of the pipe is acceptable for pipe sizes 1-inch (25-mm) through 3-1/2 in. (90-mm), and the clearance provided by a pipe sleeve of nominal diameter 4-in (100-mm) larger than the nominal diameter of the pipe is acceptable for pipe sizes 4-in. (100-mm) and larger.” (with the information of the law, given in the paragraph above, we can ask the question) When a 2-inch nominal size pipe is going through a wall in accordance with the legal recommended practice. The minimum size of schedule pipe that can be used as a sleeve for the pipe: (NFPA 13,2007 - - - 13-100, 9.3.4.3)
4-inches
Double extra-strong steel pipe corresponds to:
Schedule-160
Of the following color of the fixed electrical equipment, ground wire should be:
Green
A threaded fitting used to join two pipe sections of the same diameter:
Coupling
The nominal pipe size refers to the:
Inside diameter
On a set of drawings a line is drawn 12-1/2-inches long. If the scale is 1/8 of an inch to the foot, what is the actual length of the pipe:
12.5 X 8 = 100-feet
A master fire suppression contractor is NOT authorized to perform which of the following functions with regard to fire suppression systems:
Design the system
Of the following statement pertaining to the safe and proper handling of any oxy-fuel torch, the one that is INCORRECT:
Always use a petroleum-based lubricant to lubricate all valves and regulators
Lateral sway bracing shall be provided on all feed and cross mains regardless of size and all branch lines and other piping with a diameter of: (NFPA 13,2007 - - - 13-100, 9.3.5.3.1*)
2-1/2 in. and larger
Lateral sway bracing shall be spaced in accordance with Table 9.3.5.2 (a) or Table 9.3.5.2 (b), and spacing shall not exceed a maximum interval of _____ on center: (NFPA 13, 2007 - - - 13-100, 9.3.5.3.2*)
40-feet
No clearances is required for piping passing through __________ board or equally frangible construction that is not required to have a fire resistance rating: (NFPA 13, 2007 - - - 13-100, 9.3.4.4)
Gypsum
The requirement for clearance for piping passing through gypsum board or equally frangible construction that is not required to have a fire resistance rating: (NFPA 13, 2007 - - - 9.3.4.4)
No clearance
Sprinkler risers in multi-story buildings, riser supports shall be provided at the __________ level, at each __________ level above, and below ______, and at the ______ of the riser: ( NFPA 13, 2007 - - - 13-98, 9.2.5.4.1)
Lowest, Alternate, Offsets, Top
Test 2.6 Question
Answer
Storage group S occupancy includes, among others, the use of a building or structure, or a portion thereof, for: (NYC Bldg. code 2014 - - - 311.1)
Storage, such as for warehouses, storage room / freight depots and distribution centers, when not classified as a hazardous occupancy
Sprinkler protection shall be provided for exterior balconies, decks and ground-floor patios of dwelling units where the building is of type V construction and automatic sprinkler protection is required for Group R occupancy. Sidewall sprinklers that are used to protect such areas shall be permitted to be located such that their deflectors are within _________ inch to ________ inches below the structural members, and a maximum distance of ____________ inches below the deck of the exterior balconies and decks that are constructed of open wood joist construction: (NYC Bldg. code 2014 - - - 209, 903.3.1.2.1)
1,6,14
Sprinklers shall be permitted to be omitted from skylights and similar ceiling pockets not exceeding _____________ in area, regardless of hazard classification that are separated by at least 10 ft. (3m) horizontally from any other skylight or unprotected ceiling pocket. Skylights not exceeding ____________ shall be permitted to have a plastic cover: (NFPA 13, 2007 - - - 13-52, 8.5.7)
32 ft^2
If circumstances dictate (computer room) that you cannot use a wet sprinkler system, what can you use: (NFPA 13, 2007 - - - 13-19, 3.4.9*)
Preaction system
For class 1 and class 111 systems, the minimum flow rate for the hydraulically most remote standpipe shall be 500 gpm, and the hydraulically designed standpipe systems shall be designed to provide the water flow rate by section 7.10 at a minimum residual pressure of: (NFPA 14,2007 - - - S-54, 7.8.1Q & S-58, 7.10.1.1.1)
65 psi
A written record of the inspection, tests, servicing, fire watch other operations and maintenance required by FD rules, the reference standards and any other required record keeping reference therein, shall be maintained on the premises or other approved location for a minimum of: (NYC Fire code, 2014 - - - 14,107.7)
3 years
The _________ shall be responsible at all times for the safe maintenance of a building: (NYC Fire code, 2014 - - - 14,107.5)
Owner
What NFPA applies to pumps: (NYC Fire code, 2014 - - - 121, 913.1)
NFPA 20
Other than department of buildings, no person shall remove or modify any fire protection system installed or maintenance under the provisions of NYC Bldg. code or: (NYC Bldg. code 2014 - - - 199, 901.3)
New York City Fire Code
Sprinklers shall be installed under the roof at the ceiling, in spaces under the stage either containing combustible materials or constructed of combustible materials, and in all adjacent spaces and dressing rooms, storerooms, and workshops. Where proscenium (the part of a stage that is in front of the curtain, the arch that separates a stage from the auditorium) opening protection is required, a deluge system shall be provided with open sprinklers located not more than _____ feet away from the stage side of the proscenium arch and spaced up to a maximum of ____ feet on center: (NFPA 13, 2017 - - - 13-85, 8.15.16.1 & 8.15.16.2)
3,6
