📝 [PIPE] QB ID: 0418 | VIE 02 – PIPE Elements

Gridded dry systems:

The maximum width of an exterior canopy that a dry pendent sprinkler could cover, if the dry pendent sprinkler is listed for and installed at a 45 degree angle in the corner where the roof meets the exterior canopy wall is:

Not more than _____ automatic sprinklers shall be controlled by any one preaction valve on a single-interlock systems.

A hanger needs to support 5 times the weight of water filled pipe plus:

The distance from the last hanger on a 2″ piece of pipe to the end pipe cannot exceed:

The parts of a hanger assembly that are required to be listed are:

Wet type system should not be considered when exposed temperature falls below

Which powder is commonly known as ABC?

As per NFPA 20 Fire pump should be designing a minimum of _____ of rated pressure at _____ of rated flow.

What is the total combined inside and outside hose allowance for an ordinary hazard occupancy?

In Fire Extinguisher Rating, The A rating is a water equivalency rating. Each A is equivalent to _____ gallons.

Where a refrigeration or air conditioning system is installed,

A class B1 refrigerant is considered

A total of all group A-2,B-2, A-3, and B-3 refrigerants shall not exceed _____ lb in the occupied areas and machinery rooms of institutional occupancies.

Which refrigerant replaced R-12?

What was the main reason for enacting the no venting rule of July 1, 1992?

How are refrigerant blends classified?

There can be no airflow from an occupied space through a machine room unless what?

The test pressure applied to the high side of each factory-assembled refrigerating system shall be at least equal to the design pressure of

When a refrigerating machinery room is used, the emergency procedures shall be posted

Class A refrigerants are considered

A pressure vessel having an inside diameter of 6″ or less shall be sufficient to withstand _____ times the pressure of the saturation temperature of the refrigerant or _____ times the critical pressure of the refrigerant, whichever is less.

Before you change the type of refrigerant in a refrigeration system, what three things must be done?

When air is ducted through a machine room that occupied space, What must be done?

When is the only time you can leave a service container attached to a system?

Ammonia can come in contact with _____

Can you use Ammonia in industrial applications?

A relief valve discharge capacity is rated in

A 3-cubic foot receiver must have what type of relief valve?

Refrigerant piping crossing an open space that affords passageway in any building shall not be less than _____ feet above the floor unless piping is located against the ceiling.

A machine room with a refrigerant system using ammonia shall

What refrigerant were phased out in 2004?

Direct systems using Group II refrigerants

Evaporators located _____ inches of a heating coil shall be equipped whit a pressure relief device.

What kind of material can’t be used on the outlet of a relief valve?

What is the minimum size of the discharge pipe?

The gauge thickness required on a CO2 tank construction is

An example of direct system is

A factory-sealed system containing less than 22lbs. of Group A1 refrigerant

Pressure vessels with an internal volume of 3 cubic feet or more

Walls and doors of a machinery room shall be at least _____ hour(s) fire rated.

R-11 belongs to Group

Residential occupancy is

Commercial occupancy is

Industrial occupancy is

Mixed occupancy is

A hotel is considered a _____ occupancy.

Large mercantile occupancy is

A premise or that portion of a premise where large numbers of people congregate and from which occupants cannot quickly vacate the space such as auditoriums, ballrooms, classrooms, passenger depots, restaurants, and theaters is considered a(n)

Institutional occupancy is

What is an example of institutional occupancy?

What would be the classification of a prison?

The 522 CMR 9.00 has adopted for reference ASHRAE _____

The Board of Boilers adopts by reference

The discharge relief valve is located

What is the purpose of the fire pump?

For an extra hazard occupancy where the hydraulically calculated system water flow is monitored at an approved, constantly attended location, the required water supply duration is:

Which of the following types of sprinkler systems is continually charged with water under pressure that discharges immediately when one or more sprinklers are activated by heat from a fire?

Diesel Fire Pump shell run weekly for minimum _____ mints.

Hand-held portable fire extinguishers having a gross weight exceeding _____ pounds shall be installed so that their tops are not more than _____ feet above the floor.

Boxes stack up to the sprinkler level is:

A fire pump with rated capacity of 2500 GPM at 125 PSI, The jockey pump rating would be _____ GPM at _____ Bar.

As per NFPA cranking and resting interval for fire pump diesel engine drive controller.

The pressure produced by a column of water 1 foot high is

A fire department connection is NOT required for?

NFPA standard which deals with the Recommended Practice for Fire Flow Testing & Marking of hydrants.

The fully sprinklered structure containing 500 sprinklers heads requires a minimum supply of how many spare heads?

The approximate discharge time of multipurpose ABC powder with 30 lb weight is approximate.

Which fire extinguisher should be used on a trash can full of paper ignited by a cigarette?

High-Temperature sprinklers must be tested as per the below-mentioned interval.

The purpose of fire department connection is to:

The storage tank for the diesel engine fuel is sized to contain at least an:

A green triangle containing a letter would indicate an extinguisher may be used on _____ Fire.

Which NFPA standard discusses fire extinguisher installation?

Is the most common dryer used which consist of rotating cylinder inside which the materials flow while getting in contact with hot gas.

Is the ratio of the mass of water-vapor in air and the mass of air if it is saturated is called:

The hands feel painfully cold when the skin temperature reaches

The refrigerant used in steam jet cooling is:

The total heat of the air is a function of

Boiling point of Freon-12 at atmospheric pressure is:

Which of the following is NOT a type of water cooled condenser in refrigeration?

Component of absorption refrigeration system in which the solution is cooled by cooling water.

Cascade refrigeration cycle is often used in industrial process where objects must be cooled to temperature below:

Type of refrigerant control designed to maintain a pressure difference while the compressor is operating.

As a rule of thumb, for a specified amount of compressed air, the power consumption of the compressor decreases _____ by for each 3 deg C drop in the temperature inlet air to the compressor.

Modern way of detecting air compressor leak is by using

For foundation of stacks, the maximum pressure on the soil is equal to the pressure due to the weight and the _____.

Foundation bolts of specified size should be used and surrounded by a pipe sleeve with an inside diameter of at least

For multi stage compression of an ideal Brayton cycle, the back ratio will

Type of turbine that has a specific speed below 5.

A high discharge type of turbine

Use to minimize the speed rise due to a sudden load rejection

Is the speed of a turbine when the head on the turbine is one meter

Is a fluid property which refers to the intermolecular attraction by which the separate particles of the fluid arc held together.

Which of the following is NOT the cause of black smoke in diesel engine?

Which of the following is not a method of starting a diesel engine?

Two-stroke engine performs _____ to complete one cycle.

A type of geothermal plant used when there is a presence of brine extracted from underground

Is the most important safety device on the power boiler.

During hydrostatic test, the safety valves should be