Inspector Chapter 9 Flashcards
A fire inspector typically encounters three types of fire hazards:
Unsafe behavior, Unsafe Conditions, Hazardous processes
_____ involves creating and maintaining a clean and safe environment.
Housekeeping
Most wiring must be made permanent within _____.
90 Days
Equipment designed and approved for use in a flammable atmospheres that is incapable of releasing sufficient electrical energy to cause the ignition of a flammable atmospheric mixture.
Intrinsically Safe Equipment
Motors in particular may need to be non sparking and _____ _____ _____
Intrinsically Safe Equipment
Location in which Flammable Vapors and gases may be present:
Class I Location
Combustible Dust may be Found
Class II Location
Ignitable Fibers may pose a threat.
Class III Location
Loading and unloading stations for Classes IA through IC liquids must b located no closer than _____ from storage tanks, property lines, or adjacent buildings.
25 Feet
Loading and unloading stations for Class II and Classes IIIA and IIIB liquids must be located no closer than _____ from storage tanks, property lines, or adjacent buildings.
15 Feet
Loading and Unloading Stations must be constructed on _____ _____.
Level Ground
Some types of liquids, including light fuel oils, toluene, gasoline, and jet fuels, can develop _____ on their surfaces.
Static electrical Charges
To protect against static discharges, tanks must be bonded together with a:
Metal chain or strap.
Tanks need to be grounded to neutralize static charges when these liquids are loaded and unloaded.
Class IA through IC
Bonding and grounding are necessary when these classes of liquids are loaded into containers that have previously contained Classes IA through IC liquids.
Class II, or Class IIIA and Class IIIB Liquids.
Loading hoses furnished by the receiver must be properly maintained and replaced every _____.
5 years
When not in use, hoses must be stored:
Away from direct sunlight.
Bonding is not generally required if the hose has:
Vapor-tight connections.
Detailed electrical inspections are typically the responsibility of:
Qualified electrical inspectors
A common electrical hazard occurs when electrical equipment is:
Used Improperly
Most fires in electrical equipments are caused by:
Arcing or overheating of surrounding materials to their ignition point.
In an ordinary household lamp, Less than ___ percent of the electricity or current, is converted into light. Over ___ percent is converted to heat.
10 percent; 90 percent
Inspectors should know the code requirements for the three primary storage methods:
Pallet storage, Rack Storage, Solid Piling.
Completely enclosed or surrounded as in a capsule
Encapsulating
_____ storage may include encapsulating the pallets with plastic wrap, which creates additional hazards.
Pallet
With Pallet Storage, materials are generally stacked ____ to ____ feet high on each pallet, allowing several pallets to be stacked on top of each other approaching ____ feet in height.
3 to 4; 10
The air space between top and bottom layers of pallets are generally about ___ inches.
4
Combination of material and packaging that is for sale.
Commodity
_____ _____ represents the most challenging fire protection problem of the three primary methods because it exposes more surface area to a fire.
Rack Storage.
Two main hazards associated with recycling plants are:
Bulk storage of combustible materials and hazardous processes conducted on the premises.
Incineration can reduce the bulk of waste by as much as:
95 Percent
Fuel-fired incinerators are preheated for _____ before use.
30 minutes
The two primary hazards HVAC systems pose are:
Which is the higher concern?
The spread of fire and products of combustion through the air handling system and fire hazards from heating appliances.
Fire Hazards from Heating Appliances are the higher concern.
_____ are the most common type of central heating appliance in use today.
Warm-Air Furnaces.
Considered obsolete, operate primarily by the circulation of air without the use of fans. Generally located in Basements.
Gravity Furnaces
Rely on a fan to move heated air through a system.
Forced-Air Furnaces.
Automatic controls are provided to turn of furnaces when the temperature within the ductwork or plenum reaches:
250F
Floor furnaces are mostly found in single-family dwellings built before ___
The 1960’s
Tank or container used to store a commodity that may or may not be pressurized:
Vessel
A _____ is a pressure vessel that is used for a variety of industrial processes, including generating steam to power machinery and providing heat that the industrial process requires.
Boiler
Two common types of boilers are:
Fire-Tube and Water-Tube
In a _____ boilers, the combusting gases pass through tubes that are immersed in circulating water, which is converted to steam.
Fire-tube
A _____ boiler, is a steam-generating unit in which steam and water circulate through a series of small drums and tubes, while the combustion gases pass over the outside of these steam-and water-containing elements.
Water-Tube
Most large boilers are of the _____ type
Water-Tube
_____ _____ are self-contained devices that are thermostatically controlled.
Unit Heaters
Unit heaters may use 4 types of fuel:
Propane, Natural Gas, Kerosene, Electricity
The primary safety concern associated with ventilation systems is the potential fore:
Transmission of fire, smoke, and products of combustion through the air distribution systems.
UL classifies filters in two classes, what are they and which will burn more.
Class 1 & 2, Class 2 will burn moderately.
A Type I Vent hood is placed over:
Grease-producing equipment.
A Type II Vent hood is placed over:
Equipment such as dishwashers and ovens.
Inspection of a ventilation hood system should verify a clearance of at least _____ from any combustible material unless the equipment is specially designed for a lesser clearance.
18 inches
With Solid-Fuel Cooking Equipment, Equipment must be installed on noncombustible floors that extend _____ from the outside of the appliance in every direction.
3 Feet
_____ amount supply of solid fuel is allowed in the same room as a solid-fuel cooking appliance.
One Day
Ovens/Furnaces: Operates at approximately atmospheric pressure and has a potential for exploring or fire hazard when flammable volatiles or combustible materials are processed or heated.
Class A
Ovens/Furnaces: Operates at approximately atmospheric pressure where no flammable volatiles or combustible materials are being heated.
Class B
Ovens/Furnaces: Has a potential hazard due to a flammable material being used or a special atmosphere is present; can use any type of heating system and includes a special atmosphere supply system; includes integral quench furnaces and molten salt bath furnaces.
Class C
Ovens/Furnaces: Operates at temperatures from above ambient to over 5,000F; also operates at pressures normally below atmospheric using any type of heating system.
Class D
The most common type of powered industrial truck is:
The Forklift
Industrial Trucks: Chargers for electric batter-operated units should be kept at least _____ from combustible materials.
5 feet
Any operation that requires the use of tools or machines that may produce a source of ignition.
Hot Work
Welding and thermal cutting is also called:
Hot Work
Most common fuel gas for Thermal Cutting?
Acetylene
During Hot work operations, an area of at least _____ radius away from combustible materials.
35 Feet
Hot Work workers must maintain a fire watch for at least _____ after any welding or thermal cutting operation is completed.
30 minutes
In _____ _____, the primary hazard comes from pressurizing a flammable or combustible liquid and discharging it through a small orifice. The pressure creates an aerosol, which consists of numerous small droplets with little mass and a large surface area that is easily ignited.
Spray Finishing
_____ _____ involves the suspension of electrically charge combustible powders like polyester resin and applying them to a metal or plastic part with a negative electrical charge. The hazard in this process is flash fire or explosion.
Powder Coating
_____ _____ involves the placement of a suspended article into an open dip tank of flammable or combustible liquids. Constant Vapor production as the liquid evaporates increases the risk of fire.
Immersion Coating
The most common flammable finishing operating is _____ _____.
Spray Finishing
Airless Spray finishing systems operate at pressures ranging at:
100-600 PSIG.
Compressed Air Spray finishing systems operate between:
5-20 PSI
In Spray finishing, the mechanical ventilation system must be designed to maintain the atmosphere inside the spray booth or spray room at an atmosphere less than _____ of the lower flammable limit for the most volatile flammable liquid that is applied.
25%
A conventional spray booth designed for a passenger automobile is designed to exhaust at a rate of ______
8-11,000 cubic feet/minute
Immersion Coating: The dip tanks and resistors should be contained in _____ fire-rated construction.
1-hour
_____ is the immersion of a metal part in a quench medium.
Quenching
_____ _____ are commonly used as a quench medium.
Mineral Oils
All quench tanks should have drains to protect from overflow, particularly those that contain _____ of quench oil or more.
150 gallons
Any tank over _____ must have a bottom drain that opens automatically or manually in the event of a fire.
500 gallons
Combustible Dusts: Metal dusts including aluminum, magnesium, their commercial alloys, and other dusts whose particular size, abrasives, and conductivity present hazards in the use of electrical equipment.
(Group E, F, or G)
Group E
Combustible Dusts: Voatile dusts containing more than 8 percent carbonaceous materials. Materials include coal, carbon black, charcoal, and coke dusts present in a manufacturing and power prosecuting facility.
(Group E, F, or G)
Group F
Combustible Dusts: Dust atmospheres produced in flower, grain, wood, plastic, and chemical processing operations.
(Group E, F, or G)
Group G
Combustible Dusts: Combustible dusts in the air under normal operating conditions and in sufficient quantities to produce an explosive or ignitible mixture; mechanical failure or abnormal operation of machinery might cause such an ignitible mixture to be produced; Group E combustible dusts are in quantities sufficient to be hazardous; dust accumulations are greater than 1/8 inch thick under normal conditions.
Class II, Division I
Combustible dust is produced du to an abnormal operation and is present to produce explosive or ignitible mixtures; dust accumulations have occurred but are normally insufficient to interfere with normal operation of electrical equipment; accusation of combustible dust on or in the vicinity of electrical equipment could lead to its ignition by abnormal operation or failure of the electrical equipment.
Class II, Division II
Active-dust controls, known as air material separators, are usually mechanical dust-collection systems capable of collecting _____ of the dust and storing it in bins outside of the facility.
99.5%
The keys to preventing fires in materials-handling facilities are:
Controlling dust and ignition sources.
The most common place for fires to occur in woodworking operations is at the:
Dust Hogger, a machine that turns scrap wood into splinters or chips.
Tar/Asphalt Kettles: A portable fire extinguisher rated 40-B:C must be located within ____ of the Kettle.
25 Feet
If a kettle is being used for roughing, an additional _______ must be available.
3-A:40-B:C extinguisher
The primary hazards in craft distilling are _____ and _____
Fire and Explosions.
The best way to control a distillery fire is to:
Control flammable vapors and ignition sources.
